Electric Chassis Dynamometer

Electric chassis dynamometer, also known as electric drum test bench, is an indoor testing equipment. Used to simulate the resistance of a car during actual driving, measure the performance of the car, detect the technical condition of the car, and diagnose car faults. Chassis dynamometer can be used for both automotive scientific experiments. It can also be used for maintenance production. Chassis dynamometers often use steel plate bending and integral welding of the body, which has good strength and beautiful appearance. No need for anchor bolt installation, wiring and air supply are connected using connectors, making installation and debugging extremely convenient, especially for areas with flooding where temporary lifting is necessary. Adopting single beam air lift, with good lifting synchronization, no maintenance, and no refueling. The main purpose is to use a no-load dynamometer to measure engine power, and a chassis dynamometer to measure the maximum output power and maximum vehicle speed of the car By using a chassis dynamometer to measure the maximum chassis drive power of a vehicle, the technical condition level of the vehicle can be evaluated. Composed of a drum, power absorption unit, and inertia simulation device, it is used to simulate the road resistance of vehicle travel. The function of a chassis dynamometer is a specialized measuring device used to measure the output power of the driving wheels, acceleration performance, fuel economy and exhaust emission performance, driving force and speed of a car. The main parts of the chassis dynamometer are the drum mechanism, power absorption device, control and measurement system, and auxiliary devices. Some chassis dynamometers are equipped with flywheel systems and can also measure the acceleration performance of automobiles. Sliding performance, etc.

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Description

The comprehensive drum test bench performs speedometer detection, dynamic driving test, gear detection, acceleration performance, body stability performance, ABS/ESC test and other functions on front wheel drive, rear wheel drive or four-wheel drive vehicles with axle weight less than 2000kg when rolling off the production line at the factory.

The details are as follows:

Speedometer indication error test: When the indicating value of the vehicle speedometer (V1) is 40 km/h, the speed measurement value of the test bench is qualified in the range of 32.8 km/h ~ 40 km/h.

Dynamic driving brake force test: the car drives the drum. When the speed of the car reaches 80 km/h (the speed can be set by the user), brake until the car stops, and measure the dynamic driving braking force during the deceleration process.

Astern test test (open or close as required).

Acceleration performance (on or off as required)

Automatic transmission testing and diagnostics, communication with the automotive ECU, according to test specifications (open or close as required).

The test bench is composed of the whole steel structure of the equipment, calibration device, drum system (fixed drum group, moving drum group), drum group spacing (wheelbase) adjustment system, side guide device, motor drive control system, signal acquisition, data processing, vehicle test communication device, PLC control system and display part.

A safety drum protection device is installed at the rear of the rear drum group to prevent the vehicle from running out of the test stand during the test. In order to facilitate vehicle access to the test bench, a pneumatic lift is installed in the middle of each pair of rollers.

The moving device of the drum group is a servo motor, and the wheelbase moving range is 2200-3200mm (the moving range can be adjusted according to user needs), which is suitable for front-wheel drive, rear-wheel drive, four-wheel drive, etc. The wheelbase is 1400-1800mm, and the four wheels can be controlled and operated independently, and can also be operated synchronously.

The drum test bench uses the electric inertia to simulate the kinetic energy of the vehicle on the road, and can withstand the load of the vehicle at the maximum acceleration and deceleration. Rotary drum warp good dynamic balance.