CN104806373A - Internal combustion engine valve seat ring locking mechanism and locking method - Google Patents

Internal combustion engine valve seat ring locking mechanism and locking method Download PDF

Info

Publication number
CN104806373A
CN104806373A CN201510141739.9A CN201510141739A CN104806373A CN 104806373 A CN104806373 A CN 104806373A CN 201510141739 A CN201510141739 A CN 201510141739A CN 104806373 A CN104806373 A CN 104806373A
Authority
CN
China
Prior art keywords
valve seat
seat ring
air valve
mounting hole
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510141739.9A
Other languages
Chinese (zh)
Inventor
靳永标
周海涛
王艳丽
张丽强
李鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China North Engine Research Institute Tianjin
Original Assignee
China North Engine Research Institute Tianjin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China North Engine Research Institute Tianjin filed Critical China North Engine Research Institute Tianjin
Priority to CN201510141739.9A priority Critical patent/CN104806373A/en
Publication of CN104806373A publication Critical patent/CN104806373A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/22Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads

Abstract

The invention provides an internal combustion engine valve seat ring locking mechanism and a locking method thereof. The internal combustion engine valve seat ring locking mechanism comprises a cylinder cover and a valve seat ring; the cylinder cover is provided with a valve seat ring locking groove and a valve seat ring mounting hole. When the installation interference magnitude of the valve cover and the valve seat ring keeps unchanged, the valve seat ring can be locked reliably by selecting the locking structure of the valve seat ring mounting hole reasonably and punching at the punching position, and falling fault of the valve seat ring can be avoided efficiently.

Description

Engine valve seat ring locking mechanism and locking method thereof
Technical field
The invention belongs to air valve seat ring locking mechanism field, especially relate to a kind of engine valve seat ring locking mechanism and locking method thereof.
Background technique
Engine valve seat ring adopts interference fit to be arranged in the air valve seat ring mounting hole in head combustion chamber face, and its function forms with valve to seal reliably.Air valve seat ring and cylinder head should have enough magnitude of interference, can not produce obscission under ensureing working state, but too large magnitude of interference will cause the air valve seat ring mounting hole gross distortion of cylinder head and install difficulty.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of engine valve seat ring locking mechanism and locking method thereof, for the connection of air valve seat ring and cylinder head provides suitable magnitude of interference, ensure simple installation, and the air valve seat ring mounting hole of cylinder head can not produce distortion, during normal work, air valve seat ring can not produce and come off.
For solving the problems of the technologies described above, the technical solution used in the present invention is: engine valve seat ring locking mechanism, comprises cylinder head and the air valve seat ring with its interference fit, and cylinder head is provided with air valve seat ring locking slot and air valve seat ring mounting hole.
When processing air valve seat ring locking slot and air valve seat ring mounting hole, the diameter of phi A 2mm larger than the diameter of phi B of air valve seat ring mounting hole of air valve seat ring locking slot, is convenient to punching point and installs; The working depth of air valve seat ring locking slot will ensure with the end face distance of air valve seat ring to be 0.5mm ~ 1mm, and roughness is Ra3.2.
The locking method of above-mentioned engine valve seat ring, comprises the following steps: will be pressed in the air valve seat ring mounting hole of cylinder head after air valve seat ring cooled with liquid nitrogen; Rush a little with a position that rushes of punching pin at the edge of air valve seat ring locking slot near air valve seat ring edge, be washed into arc-shaped, the punching point degree of depth is 0.5mm.
The advantage that the present invention has and good effect are: when the installation magnitude of interference of air valve seat ring and cylinder head remains unchanged, by choose reasonable valve-seat bore locking mechanism, air valve seat ring reliably can be locked, effectively can avoid the release failure of air valve seat ring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the machining sketch chart of air valve seat ring locking slot in the present invention.
In figure:
1-cylinder head, 2-air valve seat ring, 3-air valve seat ring locking slot, 4-air valve seat ring mounting hole, 5-punching point position.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
Engine valve seat ring locking mechanism as shown in Fig. 1 to 2, comprises cylinder head 1 and air valve seat ring 2, and cylinder head 1 is provided with air valve seat ring locking slot 3 and air valve seat ring mounting hole 4.
When processing air valve seat ring locking slot 3 and air valve seat ring mounting hole 4, ensure the diameter of phi A 2mm larger than the diameter of phi B of air valve seat ring mounting hole 4 of air valve seat ring locking slot 3; The working depth of air valve seat ring locking slot 3 will ensure with the end face distance of air valve seat ring 2 to be 0.5mm ~ 1mm, and roughness is Ra3.2.
The locking method of the engine valve seat ring in the present embodiment comprises the following steps, first by air valve seat ring 2 with being pressed in the air valve seat ring mounting hole 4 of cylinder head 1 after cooled with liquid nitrogen; Then rush a little with the position 5 that rushes of punching pin at the edge of air valve seat ring locking slot 3 near air valve seat ring 2 edge, be washed into arc-shaped, the punching point degree of depth is 0.5mm, namely completes the locking to air valve seat ring.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.

Claims (2)

1. engine valve seat ring locking mechanism, it is characterized in that: comprise cylinder head (1) and the air valve seat ring (2) with its interference fit, cylinder head (1) is provided with air valve seat ring locking slot (3) and air valve seat ring mounting hole (4), the diameter 2mm larger than the diameter of air valve seat ring mounting hole (4) of air valve seat ring locking slot (3); The working depth of air valve seat ring locking slot (3) is to ensure that with the end face distance of air valve seat ring (2) be 0.5mm ~ 1mm, and roughness is Ra3.2.
2. the locking method of engine valve seat ring locking mechanism, is characterized in that, comprises the following steps:
(1) by air valve seat ring (2) with being pressed in the air valve seat ring mounting hole (4) of cylinder head (1) after cooled with liquid nitrogen;
(2) rush a little with the position (5) that rushes of punching pin at the edge of air valve seat ring locking slot (3) near air valve seat ring (2) edge, be washed into arc-shaped, the punching point degree of depth is 0.5mm.
CN201510141739.9A 2015-03-27 2015-03-27 Internal combustion engine valve seat ring locking mechanism and locking method Pending CN104806373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510141739.9A CN104806373A (en) 2015-03-27 2015-03-27 Internal combustion engine valve seat ring locking mechanism and locking method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510141739.9A CN104806373A (en) 2015-03-27 2015-03-27 Internal combustion engine valve seat ring locking mechanism and locking method

Publications (1)

Publication Number Publication Date
CN104806373A true CN104806373A (en) 2015-07-29

Family

ID=53691508

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510141739.9A Pending CN104806373A (en) 2015-03-27 2015-03-27 Internal combustion engine valve seat ring locking mechanism and locking method

Country Status (1)

Country Link
CN (1) CN104806373A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332811A (en) * 2015-12-10 2016-02-17 广西玉柴机器股份有限公司 Diesel engine cylinder head
CN112692541A (en) * 2020-12-28 2021-04-23 国营第六一六厂 Valve seat ring press-fitting method based on reverse deformation control

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949613A (en) * 1930-06-23 1934-03-06 Wilcox Rich Corp Valve seat retainer
CN101117901A (en) * 2007-09-04 2008-02-06 南京金城机械有限公司 Fixing method for air valve seat and special mould therefor
CN102022157A (en) * 2010-10-14 2011-04-20 广州柴油机厂股份有限公司 Mounting process of medium-speed high-strength diesel engine cylinder cover water-cooled exhaust valve seat
CN102056706A (en) * 2008-06-12 2011-05-11 瓦锡兰芬兰有限公司 Method of reconditioning of cylinder head of an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949613A (en) * 1930-06-23 1934-03-06 Wilcox Rich Corp Valve seat retainer
CN101117901A (en) * 2007-09-04 2008-02-06 南京金城机械有限公司 Fixing method for air valve seat and special mould therefor
CN102056706A (en) * 2008-06-12 2011-05-11 瓦锡兰芬兰有限公司 Method of reconditioning of cylinder head of an internal combustion engine
CN102022157A (en) * 2010-10-14 2011-04-20 广州柴油机厂股份有限公司 Mounting process of medium-speed high-strength diesel engine cylinder cover water-cooled exhaust valve seat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332811A (en) * 2015-12-10 2016-02-17 广西玉柴机器股份有限公司 Diesel engine cylinder head
CN112692541A (en) * 2020-12-28 2021-04-23 国营第六一六厂 Valve seat ring press-fitting method based on reverse deformation control

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20150729