Fully variable valve timing and lifting mechanism for variable plane supporting body

Abstract

The invention discloses a fully variable valve timing and lifting mechanism for a variable plane supporting body. The fully variable valve timing and lifting mechanism is one of reciprocating combustion engine valve control mechanisms. The disclosed technology at present can be used for changing the lasting opening time of a valve, but or has a side effect of changing the lifting range of the valve or oversized stress load of a control system. The fully variable valve timing and lifting mechanism disclosed by the invention, the angle and position of a supporting plane of a plane movement control mechanism are utilized so as to independently control lasting opening time and lifting range of the valve; a large part of the stress of the plane movement control mechanism is in the direction close to a rotating shaft, and the torsion is not great. According to the fully variable valve timing and lifting mechanism for the variable plane supporting body disclosed by the invention, control of the combustion engine valve can be optimized, the pumping loss is reduced and the efficiency of the combustion engine is improved.

Description

technical field [0001] The invention relates to a fully variable valve timing and lift mechanism of a variable plane support body, which refers to a mechanism for driving and controlling a reciprocating internal combustion engine valve. The continuous opening time of the internal combustion engine valve driven by it can be continuously opened within a certain range. adjust. Background technique [0002] The valve drive of the internal combustion engine adopts continuously variable valve timing, which can increase the filling rate of the cylinder of the internal combustion engine, improve power and efficiency, reduce the working temperature of the cylinder, and reduce the pollution emission of the internal combustion engine. The intake valve drive of the internal combustion engine adopts the continuously variable valve lift technology, which can improve the intake efficiency of the internal combustion engine, reduce fuel consumption, and improve the response speed of the inte...

AI Technical Summary

Problems solved by technology

[0005] Publication No. CN101858233 includes the invention of the fully variable valve timing method and mechanism of the variable speed pendulum mechanism. In the described variable fulcrum coupled double variable speed pendulum mechanism, the speed change pendulum that is in contact with the cam and is directly driven by the cam is in the The direction can be changed under the control of the control cam, but when the internal combustion engine rotates at a high speed, the position of the control cam supporting the shift lever is at the tip of the control cam. At this time, the torsional moment received by the control cam is relatively large, which is not conducive to the service life of the mechanism.

Moreover, the contact between the shift swing lever and the control cam is sliding friction, the friction force is relatively large, the parts are easy to wear, and the mechanism of replacing it with rollers is more complicated, so it is hoped that all the contact parts with relatively large movements include the rolling friction of the rollers

Images