CN207554133U - Diesel engine cam tappet lubrication system - Google Patents

Diesel engine cam tappet lubrication system Download PDF

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Publication number
CN207554133U
CN207554133U CN201721445899.3U CN201721445899U CN207554133U CN 207554133 U CN207554133 U CN 207554133U CN 201721445899 U CN201721445899 U CN 201721445899U CN 207554133 U CN207554133 U CN 207554133U
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China
Prior art keywords
oil groove
tappet
cam
camshaft
bushing
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Active
Application number
CN201721445899.3U
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Chinese (zh)
Inventor
李少明
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Guangxi Yuchai Machinery Co Ltd
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Guangxi Yuchai Machinery Co Ltd
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Priority to CN201721445899.3U priority Critical patent/CN207554133U/en
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Abstract

The utility model discloses a kind of diesel engine cam tappet lubrication system, including:Tappet, the tappet pilot hole being mounted in cylinder block;And camshaft, camshaft is equipped with cam, the bottom end of cam and tappet contacts, the circular shaft diameter of camshaft is mounted on by bushing in cylinder block, the outer wall of circular shaft diameter is equipped with annular oil groove, and annular oil groove is connected with the lubricant passage way in cylinder block, and the inner wall of bushing is equipped with axial oil groove, axial oil groove is connected with annular oil groove, and the opening of axial oil groove is towards cam and the contact site of tappet.The lubrication system carries out forced feed lubrication by increasing oil duct, solves wear problem.

Description

Diesel engine cam tappet lubrication system
Technical field
The utility model is related to camshaft, more particularly to a kind of diesel engine cam tappet lubrication system.
Background technology
The diesel engine of installation is supported under Engine Industry, particularly conventional cam shaft, is driven by camshaft rotary motion Dynamic tappet pumps, and cam mainly has with the chife failure models that tappet contact surface abrasion is two parts, failure cause Two kinds:First, part material is unsatisfactory for requiring, bearing capacity is less than normal;Second is that lacking effectively lubricating before two parts, lead to high temperature Abrasion.For existing cam with tappet contact surface by engine inner chamber fog lubrication, lubricant effect is poor, be easy to cause contact surface mill Damage
Closest technical solution is with the application motion:Cam is moistened with tappet contact surface by engine inner chamber mist of oil It is sliding
The information for being disclosed in the background technology part is merely intended to increase the understanding to the general background of the utility model, and It is not construed as recognizing or implies that information composition has been existing well known to persons skilled in the art in any form Technology.
Utility model content
The purpose of this utility model is to provide a kind of diesel engine cam tappet lubrication systems, are carried out by force by increasing oil duct System lubrication, solves wear problem.
To achieve the above object, the utility model provides a kind of diesel engine cam tappet lubrication system, including:Tappet, It is mounted on the tappet pilot hole in cylinder block;And camshaft, camshaft are equipped with cam, the bottom end of cam and tappet connects It touches, the circular shaft diameter of camshaft is mounted on by bushing in cylinder block, and the outer wall of circular shaft diameter is equipped with annular oil groove, annular oil groove and gas Lubricant passage way connection in cylinder body, the inner wall of bushing are equipped with axial oil groove, and axial oil groove is connected with annular oil groove, axial oil groove It is open towards cam and the contact site of tappet.
Preferably, the interior half of the bushing in cylinder block both ends is equipped with axial oil groove, in addition to the lining at cylinder block both ends Axial oil groove on the inner wall of set is penetrated through to both ends.
Compared with prior art, the utility model has the advantages that:By being set on the circular shaft diameter of camshaft Annular oil groove B is equipped with axial oil groove A, you can realize the pressure of the contact surface to camshaft Yu tappet bottom surface in the inner wall of bushing Lubrication solves wear problem.
Description of the drawings
Fig. 1 is the longitudinal sectional view of diesel engine cam tappet lubrication system according to the present utility model;
Fig. 2 is the transverse sectional view of diesel engine cam tappet lubrication system according to the present utility model;
Fig. 3 is the partial enlarged view of diesel engine cam tappet lubrication system according to the present utility model;
Fig. 4 is cam contact with tappet 2 signal in diesel engine cam tappet lubrication system according to the present utility model Figure.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality Novel protection domain is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members Part or other component parts.
As shown in Figures 1 to 4, it is lubricated and tied according to a kind of diesel engine cam tappet of specific embodiment of the present invention Structure, including tappet 2 and camshaft 3, wherein tappet 2 is mounted in the tappet pilot hole in cylinder block 1, and camshaft 3 is equipped with The bottom end contact of cam, cam and tappet 2, the circular shaft diameter of camshaft 3 is mounted on by bushing 4 in cylinder block 1, outside circular shaft diameter Wall is equipped with annular oil groove B, and annular oil groove B is connected with the lubricant passage way in cylinder block 1, and the inner wall of bushing 4 is equipped with axial oil groove A, Axial oil groove A is connected with annular oil groove B, and the opening of axial oil groove A is towards cam and the contact site of tappet 2.
As a kind of preferred embodiment, the interior half of the bushing 4 in 1 both ends of cylinder block is equipped with axial oil groove A, in addition to Axial oil groove A on the inner wall of the bushing 4 at 1 both ends of cylinder block is penetrated through to both ends.
In said program, it is machined with tappet pilot hole in cylinder block 1, during assembling, 2 bottom surface of tappet and the cam of camshaft 3 Contact, camshaft 3 with 4 clearance fit of bushing, bushing 4 is fixed in cylinder block 1, and the round axle journal of camshaft 3 is (with bushing 4 Cooperation position) annular oil groove B is machined with, the upper end of bushing 4 is machined with axial oil groove A (along cam axis direction), the ring of camshaft 3 Shape oil groove B is connected with the axial oil groove A of bushing 4.During work, 3 rotary motion of camshaft driving tappet pumps, together When, annular oil groove B is full of lubricating oil, and lubricating oil forms nozzle under pressure, by axial oil groove A, oil is sprayed to cam Axis 3 and the contact surface C of 2 bottom surface of tappet so as to lubricate the moving contact face, effectively solve contact surface C wear problems.
To sum up, the diesel engine cam tappet lubrication system of the present embodiment, by setting annular on the circular shaft diameter of camshaft 3 Oil groove B is equipped with axial oil groove A in the inner wall of bushing 4, you can realizes the pressure profit of the contact surface to camshaft 3 Yu 2 bottom surface of tappet It is sliding, solve wear problem.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These Description is not wishing to the utility model is defined to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explain the specific principle of the utility model And its practical application, so that those skilled in the art can realize and utilize a variety of different examples of the utility model Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes Formula is limited.

Claims (2)

1. a kind of diesel engine cam tappet lubrication system, which is characterized in that including:
Tappet, the tappet pilot hole being mounted in cylinder block;And
Camshaft, the camshaft are equipped with cam, the bottom end contact of the cam and the tappet, the circular shaft of the camshaft Diameter is mounted on by bushing in cylinder block, and the outer wall of the circular shaft diameter is equipped with annular oil groove, the annular oil groove and the cylinder Internal lubricant passage way connection, the inner wall of the bushing are equipped with axial oil groove, and the axial oil groove is connected with the annular oil groove, The opening of the axial oil groove is towards the cam and the contact site of the tappet.
2. diesel engine cam tappet lubrication system as described in claim 1, which is characterized in that in the cylinder block both ends The interior half of bushing is equipped with the axial oil groove, in addition to the axial oil groove on the inner wall of the bushing at the cylinder block both ends is to two End perforation.
CN201721445899.3U 2017-11-02 2017-11-02 Diesel engine cam tappet lubrication system Active CN207554133U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721445899.3U CN207554133U (en) 2017-11-02 2017-11-02 Diesel engine cam tappet lubrication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721445899.3U CN207554133U (en) 2017-11-02 2017-11-02 Diesel engine cam tappet lubrication system

Publications (1)

Publication Number Publication Date
CN207554133U true CN207554133U (en) 2018-06-29

Family

ID=62681841

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721445899.3U Active CN207554133U (en) 2017-11-02 2017-11-02 Diesel engine cam tappet lubrication system

Country Status (1)

Country Link
CN (1) CN207554133U (en)

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