Internal combustion engine performance low-pressure simulating test stage

Abstract

The internal combustion engine characteristic low-pressure simulating test stage consists of admission simulator, exhaust back pressure simulator, engine crankshaft box atmosphere back pressure simulator and low-pressure start simulator to simulate plateau environment. The admission simulator consists of air flow meter, admission regulating valve and admission pressure stabilizing barrel. The exhaust back pressure simulator consists of exhaust pressure stabilizing barrel, vacuum pumping unit and exhaust pressure regulating valve. The engine crankshaft box atmosphere back pressure simulator consists of engine crankshaft box, admission pressure stabilizing barrel and exhaust pressure stabilizing barrel. The low-pressure start simulator to simulate plateau environment consists of admission pressure stabilizing barrel and exhaust pressure stabilizing barrel connected via cold start vacuum tube.

Description

Technical field: [0001] The invention belongs to a simulation laboratory in an artificial environment, and in particular relates to a low-pressure simulation test bed for internal combustion engine characteristics for plateau environment adaptability test, factory test, development research, customs access inspection and the like. Background technique: [0002] At present, the existing internal combustion engine has obvious influence on the characteristics of the engine under the environment condition of high altitude. Take a non-supercharged engine as an example: for every 1,000 meters above sea level, the engine power will drop by 13%, the specific fuel consumption will increase by about 10%, and the smoke level will increase by about 12%. In order to solve this problem, some use exhaust gas turbocharging technology to increase the intake coefficient and achieve the purpose of restoring power. What have adopts the method that big horsepower draws dolly to solve this probl...

AI Technical Summary

Problems solved by technology

However, at present, the fully-sealed all-weather artificial plateau environment internal combustion engine simulation test bench is still blank in my country, and only the United States and Japan have fully-sealed laboratories abroad, but the price is expensive.

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