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A kind of car engine rotary valve

A technology for automobile engines and rotary valves, which is applied to engine components, machines/engines, valve devices, etc., to achieve the effects of reducing sealing problems, regular rotation cycles, and reliable work

Active Publication Date: 2020-07-14
HUNAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, the valve rotator is also responsible for rotating the air valve along the central axis of the valve stem, and the existing design of the rotator cannot ensure that the valve rotator rotates reliably

Method used

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  • A kind of car engine rotary valve
  • A kind of car engine rotary valve
  • A kind of car engine rotary valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] refer to Figure 2-Figure 4 , the automobile engine valve device 2 of the present embodiment includes a spring seat 2a, an annular circlip 2b, a cylindrical roller cage 2c, a rotary compression spring 2d, a lock cover 2e and a screw cover 2f from bottom to top.

[0039] refer to Figure 5-Figure 6 , the bottom of the spring seat 2a is recessed to form a housing portion 2a8 for the valve spring; the upper part of the spring seat 2a is provided with a boss 2a2 that cooperates with the cylindrical roller cage 2c, the annular circlip 2b and the screw cap 2f. The outer peripheral surface of the boss 2a2 is provided with a ring of accommodating grooves 2a1 for accommodating part of the cylindrical rollers 2c1. The edges of the adjacent accommodating grooves 2a1 are preferably continuous without gaps. Moreover, transitions should be provided in the accommodating grooves 2a1. section 2a7, so that when the cylindrical roller 2c1 moves to the transition section 2a7, it will slid...

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Abstract

The invention discloses a car engine rotary valve device. The device is mounted between a gas valve spring and a rocker arm, and comprises a fixed part and a rotating part which are detachable, the fixed part is combined with the gas valve spring, the rotating part is combined with a gas valve rod, a rotating mechanism promoting the fixed part and the rotating part to relatively rotate is arrangedbetween the fixed part and the rotating part, and when the rotating part bears the downward pressure effect of the rocker arm, the downward pressure acts on the rotating mechanism to promote the rotating part to rotate relative to the fixed part. According to the car engine rotary valve device, under the effect of periodic downward pressure of the rocker arm, the periodic rotation of a rotary capof the rotary valve device can be kept, the periodic rotation of the gas valve relative to a valve base is achieved, work is reliable, the rotating period is regular, and the probability of occurrence of the seal problem caused by uneven carbon deposition of the gas valve can be reduced.

Description

technical field [0001] The invention relates to an automobile engine rotary valve. Background technique [0002] For automobile engines, intake valves and exhaust valves are relatively precise and expensive parts, with high processing precision and expensive processing materials. The valves and valve seats cooperate to undertake the role of intake and exhaust valves. The disc and valve stem can withstand the extremely high temperature of the flue gas in the combustion chamber; when exhausting, the high-temperature flue gas washes the valve disc; due to the problem of the exhaust valve layout itself, the flow of flue gas discharged from different positions of the valve disc is different, which will cause Local deformation due to uneven heating; on the other hand, a certain position of the valve disc has been washed by a large amount of carbon-deposited smoke for a long time, and coking and carbon deposits will also occur on the surface; both of the above will affect the seali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/32
CPCF01L1/32
Inventor 刘伟叶拓邓彬刘安民吴远志谭金文
Owner HUNAN INST OF TECH
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