Vehicle high altitude performance simulation test system

Abstract

The invention relates to a vehicle high altitude performance simulation test system which comprises an air inlet pressure simulation system, an exhaust pressure simulation system and a control system; the air inlet pressure simulation system comprises an air inlet electric regulating valve, an air inlet pressure stabilizing box and an air flowmeter which are sequentially connected; the exhaust pressure simulation system comprises an air flowmeter, an exhaust pressure stabilizing box, an exhaust electric regulating valve and a vacuum pump which are sequentially connected; and the output end of the control system is respectively connected with the input ends of the air inlet electric regulating valve and the exhaust electric regulating valve. The invention has the advantages that the system can realize that a vehicle simulates a low air pressure environment with the altitude exceeding 5000m in a laboratory, and the simulation precision thereof completely meets a national standard requirement; and the automation efficiency and the quality are high.

Description

Technical field: [0001] The invention belongs to a simulation test device, and particularly relates to a high-altitude performance simulation test system for automobiles. technical background: [0002] When a car is driving on a plateau, the change in altitude has a significant impact on the performance of the engine and the vehicle. With the increase in altitude, the engine has problems such as power decline, economic deterioration, and serious emissions pollution. The reason is mainly due to the high altitude (low atmospheric pressure) atmospheric conditions. [0003] At present, my country's plateau vehicles do not use real plateau engines, and most of the transportation vehicles are imported or alternative models of Sino-foreign joint ventures. For naturally aspirated engines, the method of reducing the fuel supply is used, which is often referred to as a "big horse-drawn car", and the use of a supercharged engine is only a simple fuel supply adjustment for an ordinary plain ...

AI Technical Summary

Problems solved by technology

However, at present, the lag in the construction of high-altitude environmental test conditions for automobiles in China has seriously restricted the development of automobiles.

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