Bevel Gear Continuously Variable Valve Timing Mechanism

Abstract

The invention discloses a bevel gear continuously variable valve timing mechanism. The camshaft gear, the intermediate gear and the transmission gear are bevel gears; The bearing is fixedly connected, the intermediate gear bearing is set on the intermediate gear shaft; the upper end of the intermediate gear shaft is fixedly connected with the control bearing, and the control bearing is set on the camshaft; the transmission gear is fixedly connected with the transmission gear bearing, and the transmission gear bearing is set on the camshaft; The camshaft gear is set on the camshaft through the camshaft key; the sprocket is set on the transmission gear and connected with the transmission gear through the sprocket key; the control device includes a motor and a one-way drive device, and the intermediate gear shaft is connected to the motor through a one-way drive device Connection; the invention has stable phase change, simple structure, improved transmission accuracy and transmission efficiency, and low noise.

Description

technical field [0001] The invention relates to the field of internal combustion engines, in particular to a valve timing control mechanism of an intake and exhaust system of the internal combustion engine. Background technique [0002] Under the background of high pollution and lack of energy, energy saving and emission reduction have become a new focus of social attention; as one of the protagonists of energy consumption and air pollution, the energy saving and emission reduction of internal combustion engines is particularly important; Variable valve timing (VVT) technology is favored as a recognized technology that contributes to energy saving and emission reduction of internal combustion engines; and continuously variable valve technology is certainly one of the best choices. The mechanism can realize the adjustment of the valve timing in the range of the whole working condition of the engine, so as to achieve the most ideal valve timing control scheme. [0003] There ...

AI Technical Summary

Problems solved by technology

[0003] There are many researches on the continuously variable valve timing mechanism, but there are some problems in the existing continuously variable valve timing mechanism, such as the current popular scheme of changing the phase angle between the camshaft and the transmission gear through hydraulic pressure , due to problems such as hydraulic pulsation and compressibility, the phase change is not very stable, and it also involves problems such as sealing, so the mechanism is difficult to implement

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