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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
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)
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
Q1: What test scenarios can Jingke’s Drive Axle Test Bench cover? Is it compatible with passenger and commercial vehicles?
A1: This test bench is fully applicable to integrated electric drive axles and mechanical drive axles of passenger vehicles and light/medium/heavy commercial vehicles. It supports full-scenario tests including transmission efficiency, high-low speed durability, differential condition simulation, torque-speed characteristic, regenerative braking, temperature rise and vibration & noise tests. With steady-state and transient dynamic loading functions, it accurately reproduces real vehicle driving conditions such as straight running, cornering, climbing and coasting, meeting the requirements of R&D verification, performance calibration and mass quality inspection.
Q2: What are the core advantages of this bench compared with traditional simple drive axle test benches?
A2: Traditional test benches only support single-axis fixed loading and cannot simulate independent differential conditions of dual axles, resulting in large deviation from real vehicle data. Jingke’s drive axle test bench adopts dual-axis independent four-quadrant dynamic loading, enabling independent closed-loop control of torque and speed for left and right axles to restore real differential driving status. Equipped with high-precision synchronous acquisition system, it supports multi-dimensional data linkage analysis, featuring high accuracy, full working condition coverage, traceable data and energy-saving operation, solving the defects of traditional equipment with single working conditions and low precision.
Q3: Does the bench comply with industry standards and support project acceptance and certification tests?
A3: Developed in strict accordance with national and industrial specifications, the test bench fully meets relevant standard requirements with qualified loading accuracy, data acquisition precision and operational stability. It provides standardized test conditions with excellent data repeatability and traceability. It is widely used for drive axle performance verification, durability tests, factory quality inspection, project acceptance and technical filing, suitable for daily professional tests in OEM and Tier 1 laboratories.
