Cooling equipment for engine bench tests

Abstract

The invention discloses cooling equipment for an engine bench test. The cooling equipment is used for cooling a tested engine and an electric eddy current dynamometer, and the tested engine is mounted in an engine trolley. The cooling equipment comprises an engine cooling loop, a secondary cooling loop, a primary cooling loop and a dynamometer cooling loop, wherein the engine cooling loop is used for cooling the engine, and a medium in the engine cooling loop is an antifreezing solution; the engine cooling loop comprises a second heat exchanger mounted near the tested engine; the secondary cooling loop is used for cooling the antifreezing solution, a medium in the secondary cooling loop is industrial cooling water, and a water pump is arranged in the secondary cooling loop; the primary cooling loop is used for cooling the medium in the secondary cooling loop, and a medium in the primary cooling loop is industrial cooling water; the dynamometer cooling loop is used for cooling the electric eddy current dynamometer, and the dynamometer cooling loop and the primary cooling loop share the medium.

Description

technical field [0001] The invention relates to the testing technology of auto parts, more specifically, relates to the testing technology of the engine in the auto parts. Background technique [0002] The engine bench test plays an important role in the development of the whole vehicle, and it is a verification test for the performance of the engine under the condition of simulating actual use. Both data matching and production approval of the engine require bench certification. The engine bench test is to fix the engine on the bench, connect the shaft of the engine to the eddy current dynamometer, use the eddy current dynamometer to simulate the load, and realize the operation of the engine under different working conditions in the laboratory. Use the eddy current dynamometer to measure the engine power torque, and use other signal processing equipment to measure other parameters in the engine operation. At the same time, other related parameters such as exhaust emission...

AI Technical Summary

Problems solved by technology

Since the eddy current dynamometer and the engine share a set of cooling circuit and need to share the medium, the problem of insufficient medium flow of the eddy current dynamometer often occurs. The temperature of the inlet and outlet water of the eddy current dynamometer is high, which is not conducive to the eddy current dynamometer machine life

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