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Engine and engine noise reduction method

An engine and noise reduction technology, applied to engine components, machines/engines, gear vibration/noise attenuation, etc., can solve engine noise and other problems

Inactive Publication Date: 2020-05-15
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an engine and an engine noise reduction method to solve the technical problem of engine noise in the prior art

Method used

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  • Engine and engine noise reduction method
  • Engine and engine noise reduction method
  • Engine and engine noise reduction method

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Embodiment Construction

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides an engine and an engine noise reduction method, and relates to the technical field of engines. The engine comprises a cylinder cover, a valve mechanism and an elastic mechanism,wherein the valve mechanism comprises a camshaft; at least one drive cam and at least one balance cam are arranged on the camshaft; cam tips of the at least one drive cam and cam tips of the at leastone balance cam are provided with relative rotation angles in the radial direction of the camshaft; and the elastic mechanism is arranged on the cylinder cover, and the at least one balance cam is elastically arranged on the elastic mechanism in an abutted mode. In the above technical scheme, the noise reduction process of the engine starts from an excitation source, and the problem of gear knocking noise caused by positive and negative value switching of driving torque of the camshaft can be directly solved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine and an engine noise reduction method. Background technique [0002] The camshaft of the engine periodically compresses and releases the valve spring to realize the opening and closing of the valve, thus completing the ventilation of the engine. Affected by factors such as the cam profile of the camshaft, valve spring stiffness, and valve lift, the driving torque of the engine camshaft is a torque curve that fluctuates periodically in magnitude and direction. In the prior art, the periodic fluctuation of the driving torque of the engine camshaft will cause the speed of the gear transmission system to be fast or slow suddenly, thus causing gear knocking of the timing gear system, which will worsen the noise of the engine. Contents of the invention [0003] The object of the present invention is to provide an engine and an engine noise reduction method to solve the tech...

Claims

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Application Information

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IPC IPC(8): F01L1/04F01L1/08F16H57/00F16F15/067
CPCF01L1/04F01L1/08F01L2810/04F16F15/067F16H57/0006F16H2057/0012
Inventor 张海龙陈琳于健孙荣健
Owner WEICHAI POWER CO LTD
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