Dual-sliding-body synchronous stretching system

Abstract

A dual-sliding-body synchronous stretching system belongs to the technical field of internal combustion engines and comprises an engine intake pipe, an engine, an engine exhaust pipe, a guide-leaf plate, a rotating shaft, a push-pull rod, a control body, springs, a moving body, sliding bodies and a connecting pipe, wherein the guide-leaf plate is arranged in an air inlet branch and fixedly connected with the rotating shaft; one end of the push-pull rod is hinged to the guide-leaf plate, and the other end of the push-pull rod is hinged to the moving body after penetrating the lower wall surface of the control body; the sliding bodies are connected through the springs; one end of the connecting pipe is communicated with the lower cavity of the control body, and the other end of the connecting pipe is communicated with the engine exhaust pipe, between a catalyst pack and a noise damper, of the engine. When the engine works under the low-speed working condition, intake flow tumbling is relatively strong; when the engine works under the high-speed working condition, the pumping loss is low. The dual-sliding-body synchronous stretching system is reasonable in design, simple in structure and suitable for optimal design of the air intake system of a naturally aspirated engine.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and specifically relates to a double sliding body synchronous stretching system that can realize the self-regulation of the air intake system of a naturally aspirated engine. Background technique [0002] At the beginning of the 20th century, British B. Hopkinson found in the internal combustion engine test that when the air in the cylinder is disturbed, the combustion process can be accelerated Effect, the use of tumble flow to increase the turbulence intensity in the combustion chamber and the use of lean mixture combustion mode, etc., have become the focus of research on spark ignition engines. The air movement in the engine cylinder is transient and complex. From the point of view of the overall movement of the gas macroscopically, it generally appears as an oblique axis vortex. At this time, the vortex and tumble can be regarded as two independent components of the obliq...

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Problems solved by technology

[0003] After searching the existing literature, it is found that the patent application number is 20121041673.5, and the name is a patented technology of a variable intake tumble adjustment mechanism for a gasoline engine. It provides a technology that uses an electric actuator to adjust the intake tumble, but it Self-regulation of intake tumble cannot be realized

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