CN104047652A

CN104047652A - Novel valve tappet of engine

Info

Publication number: CN104047652A
Application number: CN201310076248.1A
Authority: CN
Inventors: 唐永东; 张勃
Original assignee: YIZHENG HUACHENG INTERNAL COMBUSTION ENGINE FITTINGS FACTORY
Current assignee: YIZHENG HUACHENG INTERNAL COMBUSTION ENGINE FITTINGS FACTORY
Priority date: 2013-03-11
Filing date: 2013-03-11
Publication date: 2014-09-17

Abstract

The invention relates to a novel valve tappet of an engine. The novel valve tappet of the engine comprises a tappet body base, an inner tappet cavity, an oil return pipe outlet groove and an oil return pipe, wherein the valve tappet is of a straight cylinder shape; the oil return pipe outlet groove is formed in the outer surface of the end part of the tappet body base; the inlet end of the oil return pipe is arranged on the inner wall of the inner tappet cavity; the outlet end of the oil return pipe is arranged on the oil return pipe outlet groove; the inner wall of the inner tappet cavity is set at a certain angle. The novel valve tappet of the engine is simple in structure, and the inner wall of the inner tappet cavity is set at the certain angle, so that the abrasion of the side surface of the tappet is reduced, the probability of jamming and fracturing of the tappet is reduced, and the normal operation of the engine is ensured.

Description

A kind of new work engine valve tappet

Technical field

The present invention relates to a kind of new work engine valve tappet, belong to technical field of engines.

Background technique

Valve tappet is a critical piece in valve transmission group, and tappet is the driven member of cam, and its effect is that the motion from cam and active force are passed to push rod or valve, also bears the lateral force that cam applies simultaneously and is passed to body or cylinder head.

Tappet is in the time of work, its bottom surface contacts with cam, because area of contact is little, contact is large, therefore wearing and tearing are relatively serious, under the not nyctitropic lateral forces of cam, increased the weight of the tappet side surface that play the guiding role and the eccentric wear of tappet mouth, can there is stuck phenomenon of rupture, thereby affect engine work.

Summary of the invention

For above-mentioned defect, the object of the present invention is to provide a kind of simple in structure, reduction tappet side surface wearing and tearing, reduce a kind of new work engine valve tappet of the stuck fracture probability of tappet.

The technical solution adopted in the present invention is for this reason: comprise that tappet body base, tappet inner chamber, return tube go out port recess and return tube, described valve tappet is straight tube shape, described tappet body base end outer surface is provided with return tube and goes out port recess, the entrance point of described return tube is located on the inwall of tappet inner chamber, the outlet end of return tube is located at return tube and goes out in port recess, and the inwall of described tappet inner chamber is provided with several angle.

The inwall angle of described tappet inner chamber is 2 °～3 °.

Advantage of the present invention is: the present invention is simple in structure, and by the inwall of tappet inner chamber is provided with to angle, thereby the wearing and tearing that alleviated tappet side surface have reduced the probability of the stuck fracture of tappet, have ensured engine work.

Brief description of the drawings

Fig. 1 is structural representation of the present invention.

In figure, 1 is tappet body base, the 2nd, tappet inner chamber, the 3rd, and return tube goes out port recess, the 4th, return tube, the 5th, inwall.

Embodiment

A kind of new work engine valve tappet, comprise that tappet body base 1, tappet inner chamber 2, return tube go out port recess 3 and return tube 4, described valve tappet is straight tube shape, described tappet body base 1 end outer surface is provided with return tube and goes out port recess 3, the entrance point of described return tube 4 is located on the inwall 5 of tappet inner chamber 2, the outlet end of return tube 4 is located at return tube and goes out in port recess 3, and the inwall 5 of described tappet inner chamber 2 is provided with several angle; Inwall 5 angles of described tappet inner chamber 2 are 2 °～3 °.

Claims

1. a new work engine valve tappet, it is characterized in that, comprise that tappet body base, tappet inner chamber, return tube go out port recess and return tube, described valve tappet is straight tube shape, described tappet body base end outer surface is provided with return tube and goes out port recess, the entrance point of described return tube is located on the inwall of tappet inner chamber, and the outlet end of return tube is located at return tube and goes out in port recess, and the inwall of described tappet inner chamber is provided with several angle.

2. a kind of new work engine valve tappet according to claim 1, is characterized in that, the inwall angle of described tappet inner chamber is 2 °～3 °.