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Variable valve timing device

A gas distribution phase and timing device technology, which is applied to valve devices, non-mechanically actuated valves, machines/engines, etc., can solve problems such as insufficient charge, fuel waste, and insufficient combustion, and achieve low cost and manufacturing Simple, easy-to-install effect

Active Publication Date: 2019-01-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a valve train has a series of problems. For example, when the car is in a low-load condition, the charge in the cylinder will appear too much, resulting in insufficient combustion and waste of fuel. The charge in the cylinder will appear insufficient again, affecting the power output of the car engine

Method used

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  • Variable valve timing device
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Embodiment Construction

[0020] The invention discloses a variable valve timing device, such as figure 1 , 2 As shown in , 3, it includes an outer sun gear 1 and an inner sun gear 2 arranged coaxially, and a planetary gear 3 located between the outer sun gear and the inner sun gear and meshing with the outer sun gear and the inner sun gear at the same time. The external sun gear, the internal sun gear and the planetary gear constitute a group of epicyclic gear trains, which are used as the variable valve phase timing device of the present invention to replace the timing gears in the traditional valve train. During normal gas distribution, power is input from the outside to the timing device through the external sun gear and output by the internal sun gear.

[0021] The center of the inner sun gear is coaxially provided with a connection hole 21 of the camshaft 4 for valve transmission, which is used for coaxial and fixed connection with the camshaft. The rotation of the inner sun gear drives the cam...

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Abstract

The invention relates to a variable valve timing device, comprising a data acquisition module, an external sun gear and an internal sun gear arranged coaxially, and a The meshing planetary gears, the center of the inner sun gear is coaxially provided with the connecting hole of the camshaft for valve transmission, the planetary gear is equipped with a planetary carrier, and the planetary carrier is equipped with a clutch or brake, and the outer sun gear Input power through timing chain transmission, there are 3 planetary wheels, and at least one of the planetary wheels is coaxially fixedly connected with a motor, and the data acquisition module is provided with an engine working condition data acquisition input end, and the data acquisition module The data output terminal is connected to the controller of the motor. The invention can automatically adjust the gas distribution phase of the valve according to the different working conditions of the engine, so that the automobile engine can obtain the corresponding charging capacity under different working conditions, and at the same time, the exhaust gas can also become smoother.

Description

technical field [0001] The invention relates to a timing device of an automobile gas distribution mechanism, in particular to a timing device capable of making corresponding gas distribution adjustments according to different working conditions of the engine. Background technique [0002] Generally, the engine of a car adopts a valve-type gas distribution mechanism. Its function is to open and close the intake and exhaust valves of each cylinder regularly according to the working sequence and working cycle requirements of the engine, so that fresh air enters the cylinder and exhaust gas is discharged from the cylinder. The valve-type gas distribution mechanism is composed of two parts: the valve group and the valve transmission group. The components of each group are related to the position of the valve, the position of the camshaft and the driving form of the valve. Modern automobile engines all use overhead valves, that is, the intake and exhaust valves are placed in the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/34F01L9/04F01L9/22
CPCF01L1/34F01L2201/00F01L9/22F01L9/20
Inventor 王海镔熊树生魏琰超王翔李泽嵩
Owner ZHEJIANG UNIV
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