Engine plateau heat balance performance simulation test method and system

Abstract

The invention provides an engine plateau heat balance performance simulation test method. The test environment conditions of an engine at the altitude of 0-5500m can be simulated, change of engine coolant temperature and flow is respectively controlled by a coolant temperature and flow control method, and engine heat balance performance testing under different altitudes and different working conditions is performed and the optimal coolant temperature MAP and the optimal coolant flow MAP of the engine under different altitudes and different working conditions are acquired. The coolant temperature control range is 50-120 DEG C and fluctuation is less than + / -0.5 DEG C; and the flow control range is 0-400L / min and fluctuation is less than + / -1%. According to the method, engine coolant temperature and flow can be accurately adjusted in real time according to the test requirements so that adjusting precision is high, adjusting range is wide, and waste of large amount of time for achieving a test temperature point in the heat balance test can be avoided. Meanwhile, a platform and the method are provided to acquisition of the engine coolant optimal temperature and flow MAP under the condition of high altitude.

Description

technical field [0001] The invention relates to the field of automobile engines, in particular to a simulation test method and system for engine plateau heat balance performance. Background technique [0002] When vehicles, construction machinery and other power equipment are running on high altitudes, due to the deterioration of heat dissipation performance and the increase of engine heat load, the engine will have problems such as easy boiling of cooling water, decreased cooling capacity of the cooling system, and easy overheating of the body, which will eventually cause the engine to be overheated. The continuous operating capacity and operating intensity in plateau areas have declined to varying degrees. These problems can be attributed to the deterioration of the heat balance performance of the engine in the plateau region. [0003] The engine heat balance test is a test of the energy distribution of the engine under running conditions. The experimental research metho...

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Problems solved by technology

[0002] When vehicles, construction machinery and other power equipment are running on high altitudes, due to the deterioration of heat dissipation performance and the increase of engine heat load, the engine will have problems such as easy boiling of cooling water, decreased cooling capacity of the cooling system, and easy overheating of the body, which will eventually cause the engine to be overheated. Sustained operating capacity and operating intensity in plateau areas have declined to varying degrees

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