Multifunction test device for exhaust gas recirculation valve

Abstract

The invention discloses a waste-gas recycling valve multi-function test apparatus. The gas outlet of a burner is successively connected with a cooler, a continuous rotary valve, one end of an overflow valve and the inlet of a waste-gas recycling valve under test; the gas inlet of a vacuum pump is successively connected with one end of the overflow valve, a two-position three-way valve and a vacuum tube of the waste-gas recycling valve under test; the outlet of the waste-gas recycling valve under test is successively connected with an exhaust cooler, a counterbalance valve, a high-temperature two-position three-way valve and a mass flowmeter, and then is filled with atmosphere; the water inlet of the cooler is successively connected with a speed-adjustable water pump and a cooling water tank; and the water outlet of the cooler is connected with a drain pipe. The invention can be used to test the flux characteristics of a waste-gas recycling pump, the dynamic characteristics of a vacuum waste-gas recycling valve, the mechanical fatigue durability of a waste-gas recycling valve, the high-temperature waste-gas periodical impact fatigue durability of a waste-gas recycling valve, and the like.

Description

technical field [0001] The invention relates to a test device for vehicle internal combustion engine components, in particular to a multifunctional test device for an exhaust gas recirculation (EGR) valve. Background technique [0002] Exhaust gas recirculation technology can effectively suppress NOx components in internal combustion engine emissions. Due to the increasingly stringent emission regulations for various road vehicles and non-road vehicles at home and abroad, this technology will show a trend of rapid development in terms of technology development and market application. The exhaust gas recirculation valve is the most critical actuator of this technology. [0003] In China, the exhaust gas recirculation technology started relatively late, and the relevant research on this technology mostly focused on its control strategy, while the research and optimization on the exhaust gas recirculation valve was very little and the technology was very weak, which made the pr...

AI Technical Summary

Problems solved by technology

[0004] One of the main reasons for the above-mentioned status quo is that at present in China, only some extensions can be made on the engine test bench to conduct simple and rough tests on the exhaust gas recirculation valve. Its single function and poor portability have many limitations and cannot be strongly supported. Research work on the comparison system of exhaust gas recirculation valve

At present, there is no multi-functional simulation test device to comprehensively measure the performance of exhaust gas recirculation valve in China, and there are no reports of related technologies in foreign countries.

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