Gas inflow structure capable of adjusting gas inflow path in self-adaptive manner

Abstract

The invention provides a gas inflow structure capable of adjusting a gas inflow path in a self-adaptive manner and belongs to the technical field of internal combustion engines. The gas inflow structure comprises a gas inflow header pipe, a gas inflow flow mixing cavity and a gas inflow branch pipe; a low-speed gas inflow manifold, two medium-speed gas inflow manifolds and four high-speed gas inflow manifolds are connected between the pipe wall of the gas inflow header pipe and the gas inflow flow mixing cavity; the low-speed gas inflow manifold is close to the inlet end of the gas inflow header pipe; the high-speed gas inflow manifolds are close to the gas inflow flow mixing cavity; a pneumatic piston is connected in the gas inflow header pipe in a sliding manner; a hollow waste gas middle pipe is connected with the pneumatic piston; the pipe wall of the waste gas middle pipe is provided with a first blocking ring and a second blocking ring located between the first blocking ring andthe pneumatic piston; and a first reset spring driving the pneumatic piston to move in the direction of the low-speed gas inflow manifold is connected between the pipe wall of the gas inflow header pipe and the pneumatic piston. The gas inflow structure capable of adjusting the gas inflow path in the self-adaptive manner has the beneficial effect that the gas inflow path can be adjusted in the self-adaptive manner.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines and relates to an intake structure capable of adaptively adjusting an intake path. Background technique [0002] For internal combustion engines, such as gasoline engines used in conventional automobiles, the setting of the intake and exhaust systems is extremely critical, which directly affects the core parameters of the internal combustion engine such as the combustion efficiency, fuel-saving performance, and exhaust indicators of the automobile. [0003] Existing automobile engines, through the variable intake manifold, realize the adjustment of the intake path and intake volume under low-speed and high-speed conditions; by detecting parameters such as exhaust gas and vehicle speed, part of the exhaust gas is recovered and reenters the combustion chamber for combustion Although the above-mentioned function of adjusting the intake and exhaust can greatly improve the performan...

AI Technical Summary

Problems solved by technology

[0003] Existing automobile engines, through the variable intake manifold, realize the adjustment of the intake path and intake volume under low-speed and high-speed conditions; by detecting parameters such as exhaust gas and vehicle speed, part of the exhaust gas is recovered and reenters the combustion chamber for combustion ;Although the above-mentioned function of adjusting the intake and exhaust can greatly improve the performance of the engine, its detection and judgment are based on various driving data, and it also particularly depends on sensing elements and electronic programs

Due to the instability of electronic components, coupled with the extremely harsh environment of the electronic components used for intake and exhaust, it is one of the important reasons for the high failure rate, poor stability and short maintenance cycle of automobiles. Therefore, the present invention aims to provide an intake and exhaust system with a simple structure that can be realized almost by a mechanical structure, which also has the functions of exhaust gas reuse, exhaust gas preheating, intake path adjustment, etc.

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