Simulation test method and system for engine plateau thermal balance performance
An engine and heat balance technology, which is applied in the direction of internal combustion engine testing, etc., can solve the problems of reduced engine operating capacity and operating intensity, easy overheating of the body, and decreased cooling capacity of the cooling system, achieving the effect of reducing test costs and shortening the development cycle
Active Publication Date: 2020-02-07
MILITARY TRANSPORTATION UNIV PLA
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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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[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0028] Such as figure 1 As shown in the figure, a simulation test system and method for heat balance performance of an engine is placed in a plateau environment simulation cabin. It can be used to place auxiliary equipment such as dynamometers. The plateau environment simulation area 3 is used to place the engine 4 to be tested, which can accurately simulate the heat dissipation of the body when the engine is running in a plateau environment; the engine exhaust pipeline 5 is connected to the heat exchanger 10, buffer The tank 11, the control valve and the vacuum pump 12 are used to simulate the exhaust back pressure; the plateau environment simulation area 3 is connected to the heat ...
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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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IPC IPC(8): G01M15/04
Inventor 刘瑞林
Owner MILITARY TRANSPORTATION UNIV PLA