Axle Test Bench

The JKT transmission test bench is equipped with a precise and reliable mechanical system, a highly dynamic and stable control system, and a powerful software package.

The drive units can be adjusted axially and in height, while the load units can be adjusted axially. Both drive and load units can be equipped with gearbox connection structures to modify output torque and speed characteristics, so as to meet the testing requirements of different types of test pieces.

Drive Unit Key parameters:

• Rated power range: 200kW to 1MW

• Maximum speed range: 1000rpm to 10krpm

• Rated torque range: 2000N.m to 10000N.m

• Torque measurement accuracy：0.05%FS

• Torque control accuracy：±0.2% to ±0.5%FS

• Speed measurement accuracy：±1rpm

 

Load Unit Key parameters:

• Rated power range: 200kW to 2MW

• Maximum speed range: 5rpm to 6000rpm

• Rated torque range: 2000N.m to 300kN.m

• Torque measurement accuracy：0.05%FS to 0.1%FS

• Torque control accuracy：±0.5% to ±1%FS

• Speed measurement accuracy：±1rpm

Typical Application Project for Axle

Main test contents:

• Efficiency test

• Torque test

• Speed test

• Differential test

• Temperature rise test

• Over-load test

• Steady-state test

• Maximum speed test

• Durability with temperature climate test

• CLTC/WLTC cycle condition test

• User-defined cycle condition test

• Controller calibration test

• Road load simulation test

• Accelerated response test

• Torque response test

• NVH test (option)

Basic configurations:

Dynamometer & Mechanical System: A high-dynamic asynchronous motor is selected as the drive motor, and two asynchronous motors are selected as the load motors, equipped with a high-speed drive shaft system and precision, reliable mechanical components. Each load unit can be moved along the axis direction. Drive unit can be moved along the axis and height direction.

 

Frequency Converter: Four-quadrant frequency converters are adopted for dynamic or steady-state control of the dynamometer. It enables control of rotational speed, torque, allowing the dynamometer to operate in either motoring or generating mode.

 

MCU Power Supply: Provides an adjustable low-voltage power supply for the motor controller.

 

Test Object Fluid Cooling System: Supplies cooling medium for the tested axle. An oil cooling system is available for certain oil-cooled test pieces. Parameters including temperature, pressure and flow rate of the cooling system are fully adjustable.

 

Test Object Air Cooling System: Supplies the cooling air for the

 

Climate Chamber: Provides a simulated operating environment with controllable high/low temperature and humidity for the test objects.

 

Automated Measurement & Control System: Conducts overall control and condition monitoring of the entire motor test bench.

Axle test bench

Drive motor—400kW 10kN.m 12000rpm

Load motor—400kW 100kN.m 2000rpm