Chassis dynamometer system
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Image of inside of pit
Image of installation in vehicle

Testing systemsChassis dynamometer system

Metal rollers connected to a device which emulates the vehicle inertia and the vehicle road load that the vehicle experiences on a real road

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Torque box system type vehicle restraint device (for 2WD and 4WD)
Attachment for vehicles without torque box holes
Tire restraining vehicle restrainment device (for 2WD)
4-point pole pulling type vehicle restraint device (for 4WD)
Vehicle centering device
  • It supports tests for various vehicles including four-wheel drive vehicle, hybrid electric vehicle and electric vehicle, etc.
  • Any kind of environment including high temperature, low temperature, high humidity, low pressure, rain, snow can be reproduced.
  • Various tests including exhaust gas consumption, NVH and durability are selectable according to the applications.
  • Linear regression for driving force of electric inertia evaluation in JASO standard is adopted and high precision simulation of vehicle speed of front and rear wheels is realized.

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Optional item

By installing the below optional units to the Chassis Dynamometer, reproduceablity of actual road conditons is improved  and it enables the wider tests.

Vehicle centering device
Centering between the roller and rolling wheels  is performed by sandwiching the wheel from front and rear directions by use of air-driven cylinder. In addition, vehicle position can be corrected by rotating the top of cylinder.
Roller surface
By mounting a pad simulating a rea road surface on the roller, it can realize a road surface and friction factor similar to a real road.   It can meet with the Knurling method.
Vehicle cooling fan
Cooling wind according to vehicle speed is provided. We produce the system according to customers' requests regarding rating and shapes. Electric movement is realized according to layout of the testing room
Tire cooling fan
This fan prevents tire surface overheat and the subsequent tire bursting during the driving mode. Together with the vehicle cooling fan, it can follow vehicle speed or offer the fixed wind volume operation.

Example of 2D display screen

Draiver's AID

Driver's aid
This system supports major exhaust gas restriction regulation modes of the world. In addition, it can record the real road conditions or reproduce the same.

Test items and other features

Fuel consumption and exhaust gas  emission test
It supports the related regulations in  Japan, EPA (US) and Europe.
Environmental tests
It can reproduce any kind of environmental conditions in the world including high temperature, low temperature, high humidity, low pressure, rain, snow, etc.
Noise test
Noise test in simple anechoic room and road noise test can be performed by adopting the low noise and liquid-cooled dynamometer.
Production line level check
It supports the sample tests of completed vehicle before shipment from factory.
General performance tests
With high capacity and high load rating, it can cover the full-load performance test.
Durability test
It can support the durability test for catalyzer deterioration evaluation after traveling 100,000 miles (160,934 km) .
Front-rear roll difference speed on 4WD mode is within +/- 0.1km/h.
This is equipment applicable to emission performance, noise performance and environmental testing for various 4WD complete vehicles.
Reliability of electric inertia control
By the linear regression analysis function of the driving force  to evaluate the electric inertia simulation as defined by JASO Standard, it realized high reliability of electric inertia control. 
Frame oil floated and roller over-hung configuration
Mechanical loss of roller bearing can be measured by load cell, and compensation of bearing mechanical loss caused by change of axle load is possible. In addition, high torque detection accuracy is realized by adopting the frame oil pressure system with less vibration resistance.
High correlativity with road data and reproducibility of load of road
With high accuracy and good repeatability load, it offers the operation without large difference with a real road in terms of exhaust gas consumption evaluation.
Various series
The optimal system configuration can be selected according to test vehicle types and its applications such as 4-wheel drive vehicle, hybrid electric vehicle and electric vehicle etc.

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