Differential pressure type intake tumble regulating system of gasoline engine

Abstract

The invention provides a differential pressure type intake tumble regulating system of a gasoline engine. The system comprises a control barrel, wherein a control cavity is formed in the control barrel and is separated into first space and second space, which are not communicated with each other; the first space is communicated with an exhaust pipe at the intake side of a catalyst pack by a first connecting pipe; and the second space is communicated with the exhaust pipe at the outlet side of the catalyst pack by a second connecting pipe. The differential pressure type intake tumble regulating system of the gasoline engine has the beneficial effects that visimple and effective mechanical structure, the characteristic of pressure change of the exhaust pipe during high speed and low speed working conditions of an internal combustion engine is reasonably utilized to regulate the intake tumble of the engine, and any electric control equipment is not used, so the system has a simple structure and a low failure rate and is low in cost, and longer service life is ensured.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a differential pressure intake tumble regulating system of a gasoline 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 used as two independent components of the oblique-axis vortex. The flow can also increase the turbulence intensity of the air movem...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in view of the complexity of the current system for adjusting the intake tumble of the internal combustion engine, the high manufacturing cost and the slightly high failure rate, the present invention provides a differential pressure intake tumbler for a gasoline engine. The flow regulation system does not use any electronic control equipment, but uses a simple and effective mechanical structure to automatically adjust the tumble flow of the intake air of the internal combustion engine by using the pressure difference

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