Turbo-worm driving type variable connecting rod length variable compression ratio mechanism

Abstract

The invention discloses a turbo-worm driving type variable connecting rod length variable compression ratio mechanism. The turbo-worm driving type variable connecting rod length variable compression ratio mechanism comprises a connecting rod small head, an eccentric connecting rod bushing, a worm, a driven gear, a driving gear, a driving motor, a connecting rod body, a bearing end cover, a bearingand the like, and is characterized in that the eccentric connecting rod bushing is arranged in a connecting rod small head hole; an eccentric hole of the eccentric connecting rod bushing is used formounting a piston pin and mounting the worm in a processing round hole in the connecting rod small head; the worm and an arc-shaped gear at the middle position of the connecting rod eccentric bushingare engaged to form a turbo-worm transmission system; the driving motor is arranged in the connecting rod body and is controlled by an electronic control system; and the driving drives the turbo-wormsystem through the gear transmission system and the eccentric connecting rod bushing rotates, so that the straight-line distance from the hole axis of the piston pin to a crank journal is changed, thelength of the connecting rod is changed and the engine compression ratio is changed.

Description

technical field [0001] The invention relates to a vehicle engine component, more specifically, a turbine and worm driven variable connecting rod length variable compression ratio mechanism. Background technique [0002] There is still huge potential in the production and retention of automobiles, which also brings opportunities and challenges to the development of engines. Although new energy vehicles have sprung up in recent years, they still cannot shake the market of mainstream internal combustion engine vehicles. The internal combustion engine has the advantages of light weight, high energy density, high thermal efficiency, good fuel adaptability, and reliable performance. At present, most engines still use petroleum products as the main fuel source. Therefore, with the increase of car ownership year by year, the problem of energy security has become more severe, and higher requirements have been placed on the engine. There are many factors that affect the thermal effic...

AI Technical Summary

Problems solved by technology

However, an excessively large compression ratio in a gasoline engine will lead to uncontrollable combustion, thereby damaging the engine, and prone to knocking when the load is relatively large; an excessively large compression ratio in a diesel engine will cause the cylinder pressure of the diesel engine to be too high, resulting in increased vibration and noise. The impact load to be borne by the moving parts increases, which affects the working reliability and service life of the diesel engine

Images