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MAHA LPS 3000 Operating Instructions Manual
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MAHA LPS 3000 Operating Instructions Manual

Dynamometer for passenger cars, commercial vehicles and motorcycles
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LPS 3000
Dynamometer for Passenger Cars, Commercial Vehicles and Motorcycles
Original Operating Instructions
BA052301-en

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Summary of Contents for MAHA LPS 3000

  • Page 1 LPS 3000 Dynamometer for Passenger Cars, Commercial Vehicles and Motorcycles Original Operating Instructions BA052301-en...
  • Page 2 BA052301-en 2021-10-27 © MAHA Maschinenbau Haldenwang GmbH & Co. KG The reproduction, distribution and utilization of this document as well as the communication of its contents to others without explicit authorization is prohibited. Offenders will be held liable for the payment of damages.

  • Page 3: Table Of Contents

    Safety Information about Tires ......................... 11 Safety Information about the Eddy Current Brake ................... 11 1.10 Safety Information about Motorcycle Testing ..................11 1.11 Safety Information about the Anchoring Device LPS 3000 Truck ............11 1.12 Safety Features ............................12 1.13 Accessories..............................12 1.14 What to Do in the Event of an Accident ....................
  • Page 4 3.2.1 Heat Balance ............................42 3.2.2 Exhaust Suction System ........................44 3.2.3 Fresh Air Supply for the Test Room ....................45 Transport and Storage ........................... 45 Installation and Initial Operation ........................45 Software ................................. 46 System Requirements ..........................46 Starting the Setup ............................46 Selecting the Setup Language ........................
  • Page 5 9.1.5 Constant Engine RPM ......................... 75 9.1.6 Standstill .............................. 75 Measure Engine Power ..........................76 9.2.1 Display Last Measurement ......................... 76 9.2.2 Continuous Measurement ........................77 9.2.3 Discrete Measurement ........................80 Engine Flexibility Test ..........................82 Speedometer Check ..........................83 9.4.1 Vehicle Speed ............................
  • Page 6 12.2 Annual Inspection ............................ 112 12.3 Care Instructions ............................. 112 12.4 Troubleshooting ............................113 12.5 Maintenance by the Operator........................113 12.5.1 Roller Set ............................113 12.5.2 Eddy Current Brake ..........................113 12.5.3 Cardan Shaft ............................113 12.5.4 Encased Bearings ..........................113 12.6 Spare Parts ...............................

  • Page 7: Safety

    Safety Introduction Thoroughly read this manual before operating the equipment and comply with the instructions. Always display the manual in a conspicuous location. Personal injury and property damage incurred due to non-compliance with these safety instructions are not covered by the product liability regulations. Symbols Important safety instructions.

  • Page 8: Safety Instructions For Operation

    Safety Instructions for Operation • The dynamometer may only be used and operated exclusively for its intended purpose and only within its performance limits. • The dynamometer may only be operated by trained personnel. Dynamometer and working area must be kept clean. •...

  • Page 9: Safety Instructions For Servicing

    used within its stated purpose and performance limits. Installation of the vehicle fixing ex- clusively by skilled, trained personell. Inspect attachment units on the test vehicle for strength. Pay attention to manufacturer’s information and/or load capacity. Pull on the park- ing brake and raise the lifting bar before removing the vehicle fixing.

  • Page 10: Danger Zone

    Danger Zone During dynamometer operation no persons are allowed to stay in the danger zone. See illustration for minimum distance. A Motorcycle B Car 1-Axle C Car 4WD D Truck w/o Idle Roller E Truck with Idle Roller BA052301-en...

  • Page 11: Safety Information About Tires

    1.11 Safety Information about the Anchoring Device LPS 3000 Truck The additional anchoring device is a supplement to the hydraulic load device on the LPS 3000 Truck. Anchoring devices are divided into two groups: Lifting Straps...

  • Page 12: Safety Features

    Warning and information labels are attached to the dyno. The labels shall not be changed or removed. Defective warning and information labels must be replaced. 1.13 Accessories The equipment shall be operated only with accessories which have been approved or permitted by MAHA. BA052301-en...

  • Page 13: What To Do In The Event Of An Accident

    1.14 What to Do in the Event of an Accident • The injured person is to be removed from the danger area. Find out where dressing and bandages are kept. Seek first-aid. • Provide first-aid (stop bleeding, immobilise injured limbs), report the accident and seal off the accident site.

  • Page 14: Description

    The LPS 3000 enables engine power measurements to be made on cars and trucks with petrol and diesel engines. Testing of four wheel drive vehicles is possible if the LPS 3000 is equipped with the appropriate roller set and the corresponding control electronics.

  • Page 15: Technical Data

    Technical Data Specifications are subject to change without notice. 2.2.1 Communication Desk Communication desk, Version A ..............670 x 1400 x 800 mm Communication desk, Version B (available from March 2011) ..... 350 x 1230 x 860 mm BA052301-en...

  • Page 16: Roller Sets

    2.2.2 Roller Sets Motorcycle R100/1 Car/Van R100/2 Car/Van (2 eddy current brakes) R100/1 4 wheel drive movable roller set Car/Van (1 eddy current brakes) R100/2 4 wheel drive movable roller set Car/Van (2 eddy current brakes) R200/1 Car/Van/Truck (closed version) R200/2 Car/Van/Truck (divided version) BA052301-en...
  • Page 17 BA052301-en...
  • Page 18 R100/1 R100/2 R200/1 R200/2 Roller Set Length [mm] 1420 3345 4140 4550 2260 Width [mm] 1100 1100 1100 1100 1100 Height [mm] Weight 550 kg 1400 kg 1700 kg 2500 kg 2800 kg incl. packing Axle load 1,5 t 2,5 t 2,5 t 15 t 15 t...

  • Page 19: Main Switch

    Main Switch • Main switch in position 0: Power supply OFF • Main switch in position 1: Power supply ON • When in position 0, the main switch can be protected against tampering by means of a padlock. Remote Control Remote Control PC Keyboard Use this key to activate the lifting bar.
  • Page 20 As soon as the remote control is switched on and radio connection to the dyno exists, the green control lamp will light up permanently on the operation desk. The green control lamp will blink briefly each time a key is pressed. When not in use the remote control should always be stored in the re-charging box to avoid a total discharging of the battery.

  • Page 21: Description Of The Interface Box

    Description of the Interface Box The Interface Box records engine RPM, environmental data, OBD data, temperature, pressure and analog signals. This is done via modules. A maximum of 4 modules can be installed in the interface box. Additional modules can be installed in a second interface box which is connected parallel and, if desired, adapted to customer requirements.
  • Page 22 Piezo clamp, TDC sensor Light barrier Piezo clamp, TDC sensor Light barrier Oil temperature probe Trigger tongs Fuel temperature Intake air temperature Atmospheric pressure Humidity sensor OBD (Option) Pressure 1 Pressure 2 P2T2 (Option) Temperature 1 Temperature 2 Display the Interface Box Assignment 1 The assignment of the interface box appears using the keys <SHIFT>...

  • Page 23: Rpm Module (Standard)

    2.5.1 RPM Module (Standard) The RPM module is used to record the RPM and oil temperature (Plug-in card CAN DRZ). The following RPM sensors/sources can be used: Trigger Tongs The RPM signal is picked up at the ignition cable (spark plug or distributor ignition coil) with the trigger tongs.
  • Page 24 TDC Sensor The TDC sensor is always manufacturer-specific, i.e. depending on the vehicle manufacturer the corresponding diagnostic plug is used for the RPM signal pick up. The TDC sensor offers an extremely accurate RPM measurement. Once f is reached, an RPM of 12000 rot/min is displayed.

  • Page 25: Environmental Module (Standard)

    During the performance test the software will convert the roller’s current RPM into engine RPM. (Please note: The calculated RPM will only correspond if the vehicle is driven in the 'test gear'.) Automatic transmission vehicles without converter lockup cannot use the driving trial method, because the engine RPM deviates due to converter slip.

  • Page 26: Obd Module (Optional)

    Air Pressure The air pressure is recorded using the interface box and is used for projection of the engine performance based on DIN 70020, EWG 80/1269, ISO 1585, SAE J1349 or JIS D1001. Humidity The humidity is recorded using the interface box and is used for projection of the engine performance based on DIN 70020, EWG 80/1269, ISO 1585, SAE J1349 or JIS D1001.

  • Page 27: Analog Input Module (Optional)

    2.5.5 Analog Input Module (Optional) The analog input module is used to record 4 analog signals (Plug-in card CAN AIN4). Measurement data from –10 V to +10 V or from –20 mA to +20 mA can be recorded. Analog Output Card (Optional) The analog output card (Plug-in card LON OUTA) is used for further processing of measured values as analog signals for an external device (e.g.

  • Page 28: Lambda Broadband Sensor

    Power supply (12 V) from vehicle + -signal KMS UEGO CAN controller set Earth for Lambda heating Lambda sensor / KMS UEGO plug connection MAHA CAN AIN 4 Interface box terminating resistor and vehicle earth Signal line (red) + earth (vehicle) Broadband sensor (Bosch LSU 4)
  • Page 29 Contents of the CD AIN4 voltage curves. Additional option: Lambda dial. Lambda value can be displayed instead of engine rpm. File with Load simulation profile must be imported to "Load simulation profiles" database. BA052301-en...
  • Page 30 Files (voltage curves) preinstalled for Analog IN card: Lambda and AFR… …and "display.ini". Display is enabled by removing all semicolons: NOTE: Naming the dial is not possible via AIN4 in the "display.ini" with Lambda! BA052301-en...
  • Page 31 2 Connect the Lambda sensor to the KMS UEGO CAN controller using the 6-pin connector. 3 Connect the earth cable (A) for the Lambda heating to the vehicle chassis earth or the MAHA adaptor cable connector provided. Connect the KMS UEGO CAN controller signal line and power supply (B) to the MAHA junction and transfer box.
  • Page 32 Vehicle Earths The vehicle may become statically charged when driven onto the dyno! The vehicle must be earthed using the earth cable supplied in order to prevent interference with the Lambda signal. Procedure 1 Replace the existing connector on the reverse of the interface box (A) with the cable and connector supplied (B).

  • Page 33: Measurement Programs

    Measurement Programs This dynamometer provides an exact simulation of defined road load conditions. Fuel consumption measurement and exhaust analysis, as well as serial monitoring of vehicles can be carried out. The following operation modes can be selected for conducting the various measurement tasks: •...

  • Page 34: Calculation Basis

    Calculation Basis 2.9.1 Road Load Equation       Flex Roll with • v Reference speed for resistance performance values - normally 90 km/h. • v Driving speed • P Air resistance performance [kW] • P Flex performance [kW] flex •...

  • Page 35: Torque

    Roller Resistance Power P-Roll [kW]     The rolling resistance power arises from tire and road Roll surface deformation as a function of speed: with e.g. • Roll resistance coefficient of the tires µ 0.012 • Vehicle mass 950 kg •...

  • Page 36: Extrapolation Of The Engine Power With Gasoline Engines

    2.9.3 Extrapolation of the Engine Power with Gasoline Engines   1013  • DIN 70020      [mbar]          • EEC 80/1269       ...

  • Page 37: Extrapolation Of The Engine Power With Diesel Engines (Naturally Aspirated Or Supercharged)

    2.9.4 Extrapolation of the Engine Power with Diesel Engines (Naturally Aspirated or Supercharged)   1013  • DIN 70020        mbar        • EEC 80/1269   ...

  • Page 38: Extrapolation Of The Engine Power With Turbodiesel Engines

    2.9.5 Extrapolation of the Engine Power with Turbodiesel Engines   1013  • DIN 70020        mbar              • EEC 80/1269 ...

  • Page 39: Calculate Engine Factor Fm

    2.9.6 Calculate Engine Factor fm In most cases fm = 0.3 applies but this value can be changed. The following equations are used: Engine factor fm based on ISO 1585:   −   Engine factor fm based on EWG 80/1269, SAE J1349 and JIS D1001: ...

  • Page 40: Extrapolation Of Drag Power By 2Nd Coast Down Trial

    2.9.7 Extrapolation of Drag Power by 2nd Coast Down Trial A traction is loaded with the second coast down trial so that there is a shorter coast down time. An inference about the vehicle mass can be made from the various decelerations and the exact drag power determined.

  • Page 41: Wheel Drive Operation

    2.9.8 4 Wheel Drive Operation Traction Regulation The traction target value is divided in the front and rear as a function of the support roller RPM.   with • Fx Traction front • Fx Traction rear • n Support roller RPM front St-v •...

  • Page 42: Installation

    Installation Requirements for the Place of Installation The room in which the dyno is to be operated must satisfy all official regulations for the operation of equipment in the workplace. An adequate fresh-air supply and an exhaust shaft should also be available. Safety Measures The following technical safety precautions must be observed by the customer at all times.
  • Page 43 Heat flow vehicle exhaust system 0,5 x 100 = 50 kW Heat burden on the room = 200 kW • Time period An LPS 3000 performance test takes, on the average: 1.5 minutes TRUCK 3 – 4 minutes A short working break follows (vehicle change, set up work, etc.) •...

  • Page 44: Exhaust Suction System

    3.2.2 Exhaust Suction System The exhaust quantity depends upon the test vehicle.The factors which are most influential are the engine cubic capacity and RPM as well as the combustion process (spark or compression ignition). As a safety precaution it is recommended that a CO warning device be installed in the test room.

  • Page 45: Fresh Air Supply For The Test Room

    Example 1 Example 2 = 5.547 x 5000 x 0. 0363 x 1.2 x 500/273 = 18.273 x 2300 x 0,.0363 x 1.2 x 500/273 x 1.0 x 1.5 = 2212.71 m³/h = 5029.49 m³/h 3.2.3 Fresh Air Supply for the Test Room According to currently effective regulations in the Federal Republic of Germany, the air must be renewed 10 to 15 times per hour in closed testing rooms with a surface area up to 100 m².

  • Page 46: Software

    • PC speciality stores offer a wide range of USB-to-RS232 adapters. There is, however, no standard guarantee that every adapter will function on the RS232 interfaces. For this reason, MAHA offers adapters with the order number (VZ 910140) which have been tested on MAHA products.

  • Page 47: Selecting The Setup Language

    Selecting the Setup Language 1 Choose a setup language. German and English are available. 2 Confirm with <Next>.  The InstallShield Wizard appears. 3 Confirm with <Next>. BA052301-en...

  • Page 48: Selecting The Destination Folder

    Selecting the Destination Folder 1 Choose the default destination folder or click <Browse> to select a different folder. 2 Confirm with <Next>. Selecting the SQL Server 1 Select the SQL server. 2 Confirm with <Next>. BA052301-en...

  • Page 49: Selecting The Dyno Type

    Selecting the Dyno Type 1 Choose the dyno type. 2 Confirm with <Next>. Selecting Features 1 Mark the check- boxes of the features you want to install. 2 Confirm with <Next>. BA052301-en...

  • Page 50: Installing Drivers

    Installing Drivers 1 Install the required drivers. Finishing the Setup ➢ When this window appears, the instal- lation has been successfully completed. 1 Click <Finish> to exit the Install- Shield Wizard. BA052301-en...

  • Page 51: Additional Settings Under Windows 7 Or Higher

    6.10 Additional Settings under Windows 7 or higher After inserting the EUROSYSTEM CD "AutoRun" is started. Use this program to install your version of EUROSYSTEM. Click the equipment being used (1). Provided the User Account Control is enabled, this Windows confirmation prompt appears.
  • Page 52 To do this, open the installation directory, usually located at: C:\Programs\MAHA\ [Equipment type], then right-click the folder. In the object menu, select "Properties“ (2). In this dialog window, click tab "Security“ and Now the user rights can be assigned.

  • Page 53: Preparations For Testing

    Preparations for Testing Switch on the Dyno 1 Switch on the main switch at the communication desk. 2 Turn the Operating mode switch to position 2 "Setup". 3 Push the Control ON button. See also section "Description / Controls and Indicators". Drive onto Dyno Risk of injury by flying particles! •...

  • Page 54: Fix Vehicle

    • Fix the test vehicle before each test at the rear and front onto the dyno with the proper (MAHA-) vehicle fixing. Usage of a different fixing attachment can affect safety and cause personal injury. MAHA accepts no liability for the resulting damage.

  • Page 55: Fix Car/Truck

    7.4.1 Fix Car/Truck 1 Attach the tightening straps to the vehicle towing loops. The anchoring must be tight, but should not pull down the vehicle. If using tightening straps for anchoring pay close attention that the loose ends do not get close to the tires or rollers.

  • Page 56: Fix Motorcycle

    7.4.2 Fix Motorcycle 1 Open the fastening screws (A) and roughly adjust the base plate (B) to the motorcycle's wheelbase. 2 Position the clamping plate (C) at the front wheel as shown. Adjust the base plate as required and lock it using the four fastening screws. 3 Push the clamping plate firmly against the wheel.

  • Page 57: Attach Weight Simulator (Optional)

    Attach Weight Simulator (Optional) Only trained personnel shall attach the straps. Improper placement of the straps can lead to damage on the axle and/or other parts. 1 Pull the tension straps through the loops on the hydraulic cylinders. 2 Then place the straps around the vehicle axle and pull moderately tight by moving the handle up and down.

  • Page 58: Attach Exhaust Suction System

    Attach Exhaust Suction System Danger of poisoning by exhaust gases in the test room! • Use an exhaust suction system. 1 Place the exhaust suction system close to the exhaust pipe and switch it on. Risk of damage! A certain distance should be maintained from the vehicle because of possible heat accumulation in the exhaust suction unit which may cause damage to vehicle or paint.

  • Page 59: Program Structure

    Program Structure General Information The program is menu-oriented. Data or instructions can be entered via the PC keyboard. The remote control is used for the setup operation, for e.g. wheelbase setting, starting and stopping of the pre-selected driving cycle. The main menu is divided into several sub-menus which can be selected as follows: •...

  • Page 60: Tree Model

    Tree Model BA052301-en...

  • Page 61: Screen Design

    Screen Design Generally the screen is divided up into the following areas: → Status Line → Main Screen → Button Bar 8.3.1 Status Line The user is constantly being informed about the current status of the program in the status bar guiding the user through the program and providing information about the proper keys to use.
  • Page 62 SYMBOL DESCRIPTION Dyno is set for Cars (green). Dyno is set for Trucks (green). Dyno is set for Motorcycles (green). (red: switched off (green: switched on ) Activate lifting bar After activation, the lifting bar can be raised/lowered using the cursor keys. (red: lifting bar up green: lifting bar down yellow: lifting bar moves up or down)

  • Page 63: Main Screen

    8.3.2 Main Screen Here menu items can be selected or measurement variables displayed. Grey shaded boxes are not available for selection. To select a menu item from the main screen, either • mark it using the cursor keys / the tab key and confirm with <ENTER>, or •...

  • Page 64: Starting The Program

    2 Windows is started after the PC is booted. Depending on the setting, the program is started either automatically, or by calling up the Start group or by double clicking the icon. → The start screen appears with the MAHA logo and version number. → The following screen appears which shows the connected PCBs.

  • Page 65: Measurements

    Measurements Load Simulation The Load simulation menu enables the user to preselect various load conditions which, for ex- ample, make possible targeted engine diagnosis or determination of the climbing performance of a vehicle. After selecting the menu item, the following screen appears: •...
  • Page 66 Driving Cycle (Optional) A speed profile with fixed time and speed run can be driven on the dyno using the button Driving cycle. The required curve plot is displayed on the screen for the test driver. The various standard cycles are found in the directory Cycles. Load the cycles from here using the button <F8 LOAD>.
  • Page 67 Evaluation / Data Logging 1 Use the button <F8 EVALUATION>. → The following screen appears: 2 Use the drop-down menus on the right-hand side to select and save up to six test values per diagram. The number of diagrams which can be saved is not limited. 3 Exit the measurement screen with <ESC>.
  • Page 68 Zoom function 1 Press and hold left hand mouse key. 2 Frame the desired cutout in the diagram. 3 Release the left hand mouse key. → The diagram cutout will be enlarged by a maximum factor of 5. 4 Use the <F6 ZOOM OUT> key to reduce the original picture size again step by step.
  • Page 69 Store 1 Use the button <F5 STORE>. → The following screen appears: 2 Input the vehicle data and information in the entry boxes. 3 Use the button <F8 COMPLETE>. → The measurement is stored. The inserted comments are also stored in the database. Print 1 Use the button <PRINT>...

  • Page 70: Constant Traction

    9.1.2 Constant Traction A pre-set traction value activates the eddy-current brake immediately which maintains a constant traction for the duration of the measurement. The values to be set are oriented on • the model and size of the test vehicle •...
  • Page 71 Example Calculation of the traction F = m  g  sin  = m  g  sin   v / 3600 Calculation of the climbing power P with v = km/h and the following values: • Vehicle weight 1500 kg ...

  • Page 72: Constant Speed

    9.1.3 Constant Speed With the operating mode Constant Speed the dyno is regulated in such a way that the driving speed remains constant independent from the traction (from low to full throttle) created by the vehicle, i.e. only the the speed which was pre-set can be driven. Only the eddy current brake effectiveness increases up to full throttle but not the speed.

  • Page 73: Driving Simulation

    With deceleration, that is coastdown, only the mechanically existing inertia of ca. 250…300 kg (LPS 3000); ca. 280/320 kg (MSR 500) and ca. 700 kg (MSR 1000) act per axle with the double roller set. A higher inertia is not possible with coastdown. In the cycle this results in shorter coastdown times as those given.
  • Page 74 Gravitational acceleration  Gradient angle () (Coefficients A-D refer to a reference speed of 90 km/h.) 1 Position the vehicle on the dyno and fix it. 2 Open menu LOAD SIMULATION and then menu item DRIVING SIMULATION. → The following screen appears: 3 Enter the parameters using the number keys or, if available, load them from the database using <F6...

  • Page 75: Constant Engine Rpm

    9.1.5 Constant Engine RPM Notes on adjusting the engine rpm via the light barrier When making adjustments in the lower rpm range (drive shaft rpm < 800), we recommend using two reflectors in order to double the number of impulses generated. When doing so, please remember the following: •...

  • Page 76: Measure Engine Power

    Measure Engine Power The vehicle’s engine power is measured using this menu point. After selecting this menu point the following selection appears. Select the individual menu points using the cursor keys or the mouse. The menu points are explained below. •...

  • Page 77: Continuous Measurement

    9.2.2 Continuous Measurement The max. power is determined during a continous measurement and the engine power is calculated according to DIN 70020, EWG 80/1269, ISO 1585, SAE J1349 or JIS D1001 ECE, DIN, EWG or ISO (Optional), depending on which setting has been selected in category "Power Correction”.
  • Page 78 7 Accelerate the vehicle gently but continuously up to the second to last gear. As soon as the start speed is reached, the analog display changes to green. 8 Then accelerate to full throttle. Pay attention during the shifting phase that the vehicle is not accelerated past 50 km/h otherwise the test will begin before the test gear has been reached.
  • Page 79 8 Slowly reduce the throttle once the max. RPM is reached until the message appears "Shift gears and accelerate vehicle to XXX km/h. When this message appears, shift to the last gear and accelerate to the target speed (the previously reached speed + 10%) . 9 Then switch to position N and release the throttle.

  • Page 80: Discrete Measurement

    9.2.3 Discrete Measurement Notes on adjusting the engine rpm via the light barrier When making adjustments in the lower rpm range (drive shaft rpm < 800), we recommend using two reflectors in order to double the number of impulses generated. When doing so, please remember the following: •...
  • Page 81 7 Select the RPM source or RPM sensor and the appropriate box. 8 Use the button <F8 CONTINUE>. 9 Accelerate slowly and consistently up to start speed. 10 Give full throttle when the Start speed is reached. The dyno starts recording measurement data.

  • Page 82: Engine Flexibility Test

    Engine Flexibility Test The engine flexibility can be checked using this menu point. Once the flexibility test has been called up the vehicle mass and Road Load must be entered as in the driving simulation test. Enter the start and finish speed of the test. Confirm using the <> or <Return> key and then the test can begin.

  • Page 83: Speedometer Check

    Speedometer Check Use this menu point to test the vehicle’s speedometer. The following functions can be checked. • Vehicle speed • Mileage 9.4.1 Vehicle Speed Ten freely selectable speedometer target speeds can be entered using this menu point. Each one can be approached, one after another. A basic setting is done at dyno configuration. 1 Position the vehicle on the dyno and fix it.

  • Page 84: Mileage

    <F6 PROCESS>: 1 Change the target speed with the digit keys and confirm with <RETURN>. 2 Use the cursor keys <> and <> to change between the values. 3 Delete erroneously entered characters using the <BACKSPACE> key. Delete a complete box with the <DELETE> key. 4 Store the changes with the <F8 IMPORT>...

  • Page 85: Load Adaption (Optional)

    Load Adaption (Optional) Use this menu point to do various adaptions; e.g. dyno coefficients can be determined here. The iterative coefficient adaption can be done based on the following standards, whereby the vehicle must be defined in the vehicle database before doing the adaption. →...

  • Page 86: Coefficient Adaption Based On Sae J2264

    9.5.2 Coefficient Adaption based on SAE J2264 1 Position the vehicle on the dyno and fix it. 2 Call up the menu LOAD ADAPTION and then the menu item SAE J2264. → The following screen appears: 3 Enter the parameter in the boxes using the digit keys or if available, load these from the database with the <F6 DATABASE>...

  • Page 87: Lug-Down Test (Option)

    Lug-Down Test (Option) Country-specific! Use this option only if a MAHA diesel emission tester is connected to the software and ready for operation. 1 Position the vehicle on the dyno and fix it. 2 Call up the menu LUG_DOWN TEST .

  • Page 88: Settings

    Settings 10.1 Database Various points can be administered using the menu point DATABASE: power curves, time diagrams, vehicle data, load simulation profile and the driving cycle data. Tests conducted can be displayed and printed out using the appropriate menu point. The following describes how data can be entered, changed and deleted in the respective databases.
  • Page 89 3 To export a marked dataset, press <F7 EXPORT>. → Following window opens. 4 Enter a file name and if necessary select a path. 5 Confirm with <STORE>. The datasets are stored on the hard disk under C:\MAHA\*Dyno Model*\Export\..BA052301-en...
  • Page 90 2 Use the key <F8 IMPORT>. → Following window opens. 3 Select with the Cursor-keys or the mouse if necessary to change the path. 4 Import the dataset with <OPEN>. As standard, the datasets are imported from C:\MAHA\*Dyno Model*\Import\..BA052301-en...

  • Page 91: Performance Curves

    10.1.2 Performance Curves 1 Call up the menu DATABASE and then the menu item PERFORMANCE CURVES → The database browser appears: 2 Select a dataset with the cursor keys or the mouse key. 3 Open the dataset by double clicking or pressing the button <ENTER>.
  • Page 92 LEVEL 4 Vehicle- F5 • Use this button to display the vehicle data. data RPM- F6 • Use this button to display the RPM setting. settings P-drag wizzard • Use this switch button to smooth the power curve (P-drag) by extrapolation and then to store.
  • Page 93 The additional curves can only be displayed when the appropriate sensors and measurement units are connected. Power Correction 1 Use the button <F8 POWER CORRECTION>. → The following selection box opens: 2 Select the desired engine power projection. The power and torque are calculated and displayed based on the desired power correction.
  • Page 94 4 Enter a file name and select, if necessary, a path. 5 Confirm with <STORE>. The data records were stored on the hard disk under C:\MAHA\*Dyno Model*\Export\... P-Drag Wizard 1 Use the button <F7 P-DRAG WIZARD>. The wand is blended in.

  • Page 95: Time Diagram

    3 Press the left hand mouse key. → The curve is smoothed by interpolating.The interpolation is only done on the upper half of the curve. 4 Use the button <F7 END WIZARD >. → The following window appears: 5 Select YES to store the changes, if not, select NO.

  • Page 96: Vehicle Data

    10.1.4 Vehicle Data 1 Call up the menu DATABASE and then the menu point VEHICLE DATA → The database browser appears: 2 Select a dataset with the cursor key or the mouse. 3 Open the dataset by double clicking or press the <ENTER>...

  • Page 97: Load Simulation Profile

    10.1.5 Load simulation profile Using the menu point LOAD SIMULATION PROFILE the measurement screen and the print out can be set for customer-specific needs. Create new profile 1 Call up the menu DATABASE and then the menu point LOAD SIMULATION PROFILE : →...
  • Page 98 Print out setting Up to six measurement values can be selected which appear as curves on the print out. 1 Select the measurement values to be displayed from the list. Enter the appropriate measurement range. 2 Enter the time period for the graphic recording.

  • Page 99: Driving Cycle Data

    Process Profile 1 Call up the menu DATABASE and dthen the menu point LOAD SIMULATION PROFILE: → The database browser appears. 2 Select a profile with the cursor key or the mouse. 3 Open the profile by double clicking or press the <ENTER>...

  • Page 100: Vehicle Data

    10.2 Vehicle Data Use the menu item VEHICLE DATA to enter and change the vehicle data. 1 Use the menu item VEHICLE DATA. → A screen opens in which the vehicle data is shown, e.g.: 2 Select the vehicle data, or, if available, load these from the database with <F6 DATABANK>.

  • Page 101: Rpm Setting

    10.3 RPM Setting Using the menu point RPM SETTINGS the oil temperature and engine RPM can be checked and selected. 1 Use the menu point RPM SETTINGS. → A screen opens in which the motor RPM and oil temperature are shown, e.g.: 2 The RPM source or the RPM sensor can, if necessary, be changed.

  • Page 102: Driving Trial

    10.3.1 Driving Trial The driving trial enables the vehicle’s internal RPM sensor to establish a connection to the driven speed. The roller speed of the dyno vehicle is converted to an RPM. On the basis of this vehicle transmission, the corresponding RPM value can also be shown on the screen of the test which follows.

  • Page 103: Special Settings

    10.4 Special Settings Use the menu point SPECIAL SETTINGS to change the time period, the sensitivity and the delay for the performance measurement. 1 Using the corresponding button , the values can be increased or decreased: <+> bzw. <->. 2 Use <F8 IMPORT> to import the settings. Use <F7 STANDARD>...

  • Page 104: Select Dyno Type

    10.5 Select Dyno Type Use the menu point SELECT DYNO TYPE to set the dyno type. 1 To change the dyno type, use the menu point SELECT DYNO TYPE. → A selection box opens which shows the available dyno types. 2 Select the desired dyno type.

  • Page 105: Language

    10.7 Language The language can be changed using the menu point LANGUAGE. 1 To change the language, use the menu point LANGUAGE. → A selection box opens in which the available languages are shown, e.g.: 2 Select the language needed. 3 Store the changes with <F8 IMPORT>.

  • Page 106: Obd Settings (Optional)

    10.8.1 OBD Settings (Optional) Use the menu point OBD settings to select and display the measurement data. The measurement data supplied by the diagnostic interface vary depending on the vehicle manufacturer. 1 Use the menu point OBD-SETTINGS.  The following window opens. 2 Connect the OBD plug with the diagnostic interface.

  • Page 107: Diagnosis / Service

    Diagnosis / Service 11.1 Dyno Status After calling up this menu point, a screen appears which displays, e.g. the set operating mode, the rotation direction, the active axle, various regulator and fan target values as well as malfunctions/warnings. 11.2 Driver’s Aid Setup (Optional) Administer the driver’s aid using this menu point.

  • Page 108: Test Driving Cycle

    11.2.1 Test Driving Cycle Using the button Test Driving Cycle to do a speed profile with fixed time and speed curves. The test driver need only follow the curve plotting displayed on the screen. The various standard cycles are in the directory Cycles. These cycles can be loaded using the button <F8 LOAD>...

  • Page 109: Edit Profile

    LEVEL 2 • A pull up menu open using the button <F5 SELECT PROFILE> . Select the desired profile. The screen is displayed with the selected profile. 11.2.2 Edit Profile To edit a new profile, it must first be created with the menu point NEW PROFILE. •...

  • Page 110: Delete Profile

    Backup Database 1 Enter the file name and if necessary, select a path. 2 Confirm with <STORE> The database backup file is stored on the hard disk under C:\MAHA\*Dyno Model*\Backup\... 11.3.2 Restore Database 1 Select a database backup file. 2 Confirm with <OPEN>...

  • Page 111: Delete Table

    11.3.3 Delete Table 1 Select a database table. 2 Confirm with <ENTER>. The following safety inquiry appears. 3 To delete the database table, select YES. Select NO if the dataset is not to be deleted. 11.3.4 Delete Database The following safety inquiry appears. 1 To completely delete the database, select Select NO if the database is not to be deleted.

  • Page 112: Maintenance

    Any other maintenance, installation or repair work on the dynamometer during the warranty period may only be done by MAHA service technicians, those service partners authorized by MAHA or after consultation and approval by MAHA. The manufacturer warranty becomes invalid at non-compliance.
  • Page 113 12.5.1 Roller Set The LPS 3000 roller set should be inspected and serviced every 200 hours of operation or once per year. Inspection of the roller set includes its anchorage and all screw connections. The cover plate screws must be inspected before each start-up of the dynamometer.
  • Page 114 BA052301-en...
  • Page 115 Contents of the Declaration of Conformity MAHA Maschinenbau Haldenwang GmbH & Co. KG herewith declares as a manufacturer its sole responsibility to ensure that the product named hereafter meets the safety and health regulations both in design and construction required by the EC directives stated below.

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Vp 186010

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