Air inlet auxiliary system and method for improving plateau performance of engine

Abstract

The invention discloses an air inlet auxiliary system and method for improving the plateau performance of an engine, and relates to the field of engine air inlet systems. The system comprises an air inlet assembly and a control assembly, wherein the air inlet assembly comprises an air storage cavity; an air inlet of the air storage cavity is connected with an air compressor of a vehicle through apipeline; an air outlet is connected with an in-cylinder air inlet channel of the engine through a pipeline; the control assembly comprises an air inlet flow sensor, an air supplementing flow sensor and an air storage cavity electromagnetic valve; the air storage cavity electromagnetic valve is located on a pipeline between the air storage cavity and the in-cylinder air inlet channel; the air supplementing flow sensor is located on an air inlet system of the vehicle; the air supplementing flow sensor is located on a pipeline between the air compressor of the vehicle and the air storage cavity;and the air inlet flow sensor, the air supplementing flow sensor and the air storage cavity electromagnetic valve are all electrically connected with a vehicle ECU. According to the air inlet auxiliary system and method, the actual air inflow of the engine and the whole acceleration performance of the vehicle in the plateau environment can be effectively improved.

Description

technical field [0001] The invention relates to the field of engine air intake systems, in particular to an intake assist system and method for improving engine plateau performance. Background technique [0002] For the engine of the vehicle, at high altitude and low temperature environment, due to the low atmospheric pressure and low oxygen content of the plateau environment, the supercharging pressure and the total intake air flow into the cylinder after being supercharged by the ordinary supercharger cannot reach At the level of the plain, due to the reduction of the intake air volume, the fuel injection volume must be reduced to match the intake air volume. The reduction of the fuel injection volume and the intake air volume will cause the engine power to decrease compared with that in the plain environment, and the power loss in the plateau environment will occur. Situation lost. [0003] In order to reduce the power loss of the engine in the plateau environment, the c...

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Problems solved by technology

[0002] For the engine of the vehicle, at high altitude and low temperature environment, due to the low atmospheric pressure and low oxygen content of the plateau environment, the supercharging pressure and the total intake air flow into the cylinder after being supercharged by the ordinary supercharger cannot reach At the level of the plain, due to the reduction of the intake air volume, the fuel injection volume must be reduced to match the intake air volume. The reduction of the fuel injection volume and the intake air volume will cause the engine power to decrease compared with that in the plain environment, and the power loss in the plateau environment will occur. The situation goes wrong

[0003] In order to reduce the power loss of the engine in the plateau environment, the current common practice is to add an auxiliary air intake system to the engine to increase the air intake of the engine in the plateau environment. There is a certain distance between the air port and the engine intake valve, the response to the rapid acceleration of the vehicle is not enough, and the improvement effect on the overall performance of the vehicle is not good

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