CN115288826A

CN115288826A - Engine lubricating system

Info

Publication number: CN115288826A
Application number: CN202210697681.6A
Authority: CN
Inventors: 郑和瑞; 谢峰; 张丽娜; 林九冬; 范文龙
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-11-04

Abstract

The invention provides an engine lubrication system, comprising: the organism, the gear chamber cap, the bent axle, camshaft and oil cleaner, the organism includes first lateral wall and the second lateral wall that sets up relatively with first lateral wall, the gear chamber cap is fixed on the organism and is located first lateral wall place one side, the one end of bent axle is installed on first lateral wall through first axle bush, the one end of camshaft is passed through the second axle bush and is installed on the second lateral wall, oil cleaner fixes on the organism and is located between first lateral wall and the second lateral wall, be equipped with the main oil duct with the oil cleaner intercommunication in the organism, be equipped with the first oil duct of intercommunication main oil duct and first axle bush in the first lateral wall, be equipped with the second oil duct of intercommunication main oil duct and second axle bush in the second lateral wall. The invention can enable the engine oil to simultaneously lubricate the ends of the crankshaft and the camshaft through a shorter path and then lubricate other parts, shortens the path for conveying the engine oil, minimizes the loss of the engine oil, has compact and simple connection of each oil passage, and effectively improves the performance of the whole engine.

Description

Engine lubricating system

Technical Field

The invention belongs to the technical field of engines, and particularly relates to an engine lubricating system.

Background

In the prior art, the engine oil in the lubricating oil path of the engine generally flows to the two ends of the crankshaft after passing through the oil filter under the action of the engine oil pump, and then passes through one end of the crankshaft to lubricate the camshaft and other components, so that the path for conveying the engine oil is long, and the loss of the engine oil in the middle circulation process is increased. Accordingly, there is a need for an engine lubrication system that overcomes the above-identified deficiencies.

Disclosure of Invention

The invention aims to provide an engine lubricating system.

According to one aspect of the present invention, there is provided an engine lubrication system comprising:

the device comprises a machine body, a first fixing device and a second fixing device, wherein the machine body comprises a first side wall and a second side wall opposite to the first side wall;

the gear chamber cover is fixed on the machine body and is positioned on one side of the first side wall;

a first bearing shell;

the crankshaft is mounted on the first side wall through the first bearing bush at one end;

a second bearing shell;

the camshaft is arranged in parallel with the crankshaft, and one end of the camshaft is installed on the second side wall through a second bearing bush;

the oil filter is fixed on the machine body and positioned between the first side wall and the second side wall, a main oil duct communicated with the oil filter is arranged in the machine body, a first oil duct communicated with the main oil duct and the first bearing bush is arranged in the first side wall, and a second oil duct communicated with the main oil duct and the second bearing bush is arranged in the second side wall;

the engine oil flowing out of the engine oil filter enters the main oil duct, then flows into the first oil duct and the second oil duct from two ends of the main oil duct respectively, enters the first bearing bush through the first oil duct, and enters the second bearing bush through the second oil duct.

Preferably, the oil filter further comprises a first bearing and a second bearing, the crankshaft is connected with the second side wall through the first bearing, the camshaft is connected with the first side wall through the second bearing, the main oil duct is axially arranged along the crankshaft, the main oil duct is communicated with an oil outlet of the oil filter and extends to two sides of the oil filter, and the main oil duct, the first bearing and the second bearing are arranged in a non-connection mode.

Preferably, an input oil duct communicated with an oil inlet of the oil filter is arranged in the engine body, an oil pump is arranged in the gear chamber cover, and the gear chamber cover comprises a fourth oil duct communicated with the oil inlet of the oil pump, a fifth oil duct communicated with the fourth oil duct, a chamber cover output oil duct communicated with the input oil duct, and a sixth oil duct communicated with an oil outlet of the oil pump and the chamber cover output oil duct.

Preferably, the oil pan further comprises a hollow bolt and an oil pan arranged below the machine body, an oil strainer used for sucking engine oil is arranged in the oil pan, the hollow bolt is fixed with the machine body, and the hollow bolt is communicated with the oil strainer and the fifth oil duct.

Preferably, the first through hole is formed in the first side wall, the gear chamber cover comprises a groove which is coaxial with the first through hole, the groove is communicated with the fifth oil duct, and the hollow bolt penetrates through the first through hole and extends into the groove.

Preferably, the engine body further comprises a cylinder cover arranged above the engine body, a rocker arm seat fixed at the top of the cylinder cover, and a rocker arm shaft connected with the rocker arm seat, wherein a cylinder cover oil passage is arranged in the cylinder cover, the engine body further comprises a third oil passage which extends upwards from the second bearing bush and is communicated with the cylinder cover oil passage and the second oil passage, a rocker arm seat oil passage communicated with the cylinder cover oil passage is arranged in the rocker arm seat, and a rocker arm shaft oil passage communicated with the rocker arm seat oil passage is arranged in the rocker arm shaft.

Preferably, a first oil hole pin is arranged between the input oil passage and the chamber cover output oil passage, a part of the first oil hole pin is positioned in the machine body, and the other part of the first oil hole pin is positioned in the gear chamber cover;

and a second oil hole pin is arranged between the cylinder cover oil duct and the rocker arm seat oil duct, one part of the second oil hole pin is positioned in the cylinder cover, and the other part of the second oil hole pin is positioned in the rocker arm seat.

Preferably, the fifth oil passage is arranged horizontally, and the fourth oil passage is arranged perpendicularly to the fifth oil passage; the chamber cover output oil duct is horizontally arranged, and the sixth oil duct is perpendicular to the chamber cover output oil duct.

Preferably, a first oil passing groove is formed in the inner surface of the first bearing bush along the circumferential direction of the crankshaft, a crankshaft oil passage is formed in the crankshaft, and the crankshaft oil passage is communicated with the first oil passage through the first oil passing groove;

and a second oil passing groove is formed in the inner surface of the second bearing bush in the circumferential direction of the camshaft, and the third oil passage is communicated with the second oil passage through the second oil passing groove.

Preferably, an oil pressure indicator joint is arranged on the machine body and connected with the main oil gallery.

Compared with the prior art, the lubricating system of the engine provided by the invention has the following beneficial effects: the invention has simple structure, the engine oil can lubricate the ends of the crankshaft and the camshaft simultaneously through a shorter path and then lubricate other parts, the path for conveying the engine oil is shortened, the engine oil loss is minimized, each oil duct is compact and simple to connect, and the performance of the whole engine is effectively improved.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a front view of the engine of the present invention;

FIG. 2 is a left side view of the engine of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is a cross-sectional view taken along plane C-C of FIG. 1;

FIG. 7 is a cross-sectional view taken along plane D-D of FIG. 1;

FIG. 8 is an enlarged view of a portion of FIG. 7;

FIG. 9 is a cross-sectional view taken along plane E-E of FIG. 6;

FIG. 10 is a cross-sectional view taken along plane F-F of FIG. 6;

FIG. 11 is a cross-sectional view taken along plane G-G of FIG. 10;

FIG. 12 is a cross-sectional view taken along plane H-H of FIG. 10;

FIG. 13 is a cross-sectional view taken along the line I-I of FIG. 10;

fig. 14 is a partially enlarged view of fig. 13.

The engine comprises a machine body 1, a first side wall 101, a first crank hole 102, a second side wall 11, a first crank hole 111, a second crank shaft hole 1111, a first bearing 12, a first cam shaft hole 121, a second bearing 13, a first oil channel 14, a second oil channel 15, a main oil channel 16, an input oil channel 161, a first oil hole pin 17, a third oil channel 18, a first through hole 2, a gear chamber cover 21, a fourth oil channel 22, a fifth oil channel 23, a sixth oil channel 24, an output oil channel cover 25, a groove 26, an oil pump 3, a cylinder head 31, a cylinder head 311, a second oil hole pin 32, a rocker arm seat 321, a rocker arm seat oil channel 33, a rocker arm shaft 331, a rocker arm shaft oil channel 41, an oil pan 41, an oil filter 5, an oil filter 6, an oil pressure indicator joint 7, a hollow bolt 8, a

crankshaft

811, 81, a first crank shaft oil channel 82, a first oil channel 82, a second oil channel 91, a third oil channel 1211, a third oil channel 91, a third oil channel 1211 and a third oil channel.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. Moreover, in the interest of brevity and understanding, only one of the components having the same structure or function is illustrated schematically or designated in some of the drawings. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Referring to fig. 1, 2, 7 and 13, an engine lubrication system includes a body 1, a gear chamber cover 2, a cylinder head 3, an oil pan 4, a crankshaft 8, a camshaft 9, and an oil filter 5 mounted on the body 1. The engine body 1 comprises a first side wall 101 and a second side wall 102 opposite to the first side wall 101, a gear chamber cover 2 is fixed on the engine body 1 and located on one side of the first side wall 101, one side where the first side wall 101 is located is the front side of the engine body 1 of the engine, and an oil filter 5 is arranged on the right side of the engine body 1. The cylinder head 3 is fixed to the top end of the machine body 1, and the oil pan 4 is fixed to the bottom end of the machine body 1.

Referring to fig. 6, 9 and 10, the first side wall 101 is provided with a first crankshaft hole 11 and a first oil passage 13 communicated with the first crankshaft hole 11, the second side wall 102 is provided with a first camshaft hole 12 and a second oil passage 14 communicated with the first camshaft hole 12, a main oil passage 15 which is communicated with the first oil passage 13 and the second oil passage 14 and is arranged in parallel with the axis of the crankshaft 8 is provided in the right side wall of the machine body 1, and the main oil passage 15 is communicated with an oil outlet of the oil filter 5 provided on the right side wall and extends to both sides of the oil filter 5.

Referring to fig. 5 and 10, the right side wall of the machine body 1 is further provided with an input oil passage 16, the oil inlet of the oil filter 5 is communicated with the input oil passage 16, the second side wall 102 of the machine body 1 is further provided with a third oil passage 17, and the third oil passage 17 extends upwards from the first camshaft hole 12 to the top end of the machine body 1.

Referring to fig. 11 and 12, a head oil passage 31 communicating with the third oil passage 17 is provided in the cylinder head 3. The cylinder head 3 is further provided with a rocker arm seat 32, a rocker arm shaft 33 is arranged in the rocker arm seat 32, a rocker arm seat oil passage 321 communicated with the cylinder head oil passage 31 is formed in the rocker arm seat 32, a rocker arm shaft oil passage 331 communicated with the rocker arm seat oil passage 321 is formed in the rocker arm shaft 33, a second oil hole pin 311 is arranged between the cylinder head oil passage 31 and the rocker arm seat oil passage 321, a part of the second oil hole pin 311 is positioned in the cylinder head 3, and the other part of the second oil hole pin 311 is positioned in the rocker arm seat 32.

Referring to fig. 3, 4 and 5, an oil pump 26 is disposed in the gear chamber cover 2, a chamber cover output oil passage 24 communicated with the input oil passage 16 is disposed in the gear chamber cover 2, and the gear chamber cover 2 further includes a fourth oil passage 21 communicated with an oil inlet of the oil pump 26, a fifth oil passage 22 communicated with the fourth oil passage 21, and a sixth oil passage 23 communicated with an oil outlet of the oil pump 26 and the chamber cover output oil passage 24. Preferably, the fifth oil passage 22 is arranged horizontally, and the fourth oil passage 21 is arranged perpendicularly to the fifth oil passage 22; the chamber lid output oil passage 24 is disposed horizontally, and the sixth oil passage 23 is disposed perpendicular to the chamber lid output oil passage 24.

A first oil hole pin 161 is provided in the input oil passage 16 and the cover output oil passage 24, a part of the first oil hole pin 161 is located in the machine body 1, and the other part of the first oil hole pin 161 is located in the gear cover 2. The first oil hole pin 161 serves to position the gear chamber cover 2 and also allows the engine oil in the chamber cover output oil passage 24 to pass through into the input oil passage 16.

The first oil hole pin 161 and the second oil hole pin 311 are provided to facilitate the mounting of the gear chamber cover 2 and the rocker arm seat 32 and to allow the passage of oil to lubricate the respective portions.

Referring to fig. 4, an oil strainer 41 for sucking oil in the oil pan 4 is provided in the oil pan 4, the oil strainer 41 is fixed to the machine body 1 by a hollow bolt 7, and the hollow bolt 7 communicates the fifth oil passage 22 and the oil strainer 41. First through-hole 18 is still seted up to first lateral wall 101, and gear chamber lid 2 includes the recess 25 with the coaxial setting of first through-hole 18, and recess 25 and fifth oil duct 22 intercommunication, and hollow bolt 7 passes first through-hole 18 and fixes and stretch into in the recess 25 on organism 1.

Referring to fig. 2, the body 1 is further provided with an oil pressure indicator joint 6, and the oil pressure indicator joint 6 is installed on the side where the oil filter 5 is located and is connected with the main oil gallery 15. The oil pressure indicator joint 6 is used for installing an oil pressure indicator to reflect the oil pressure in the oil passage in real time to ensure the normal operation of the engine, and in other embodiments, the oil pressure indicator joint 6 may also be installed at other positions of the machine body 1 and connected with other oil passages.

Referring to fig. 7 and 8, the crankshaft 8 and the camshaft 9 are parallel to each other and are provided inside the machine body 1. The second side wall 102 is provided with a second crank hole 111 corresponding to the first crank hole 11, one end of the crankshaft 8 is disposed in the first crank hole 11, and the other end of the crankshaft 8 is disposed in the second crank hole 111. A first bearing bush 81 is further disposed in the first crank hole 11, the first bearing bush 81 is located between the crank shaft 8 and the first side wall 101, and a first oil passing groove 811 is disposed on an inner surface of the first bearing bush 81 along a circumferential direction of the crank shaft 8.

A crankshaft oil passage 82 is formed in the crankshaft 8, the crankshaft oil passage 82 is communicated with the first oil passage 13 through a first oil passing groove 811, and engine oil in the first oil passage 13 lubricates the first bearing bush 81 and enters the crankshaft oil passage 82 through the first oil passing groove 811 to lubricate a connection part between the crankshaft 8 and a connecting rod (not shown). A first bearing 1111 is provided in the second crank hole 111, and the crank shaft 8 is connected to the first bearing 1111 and is mounted to the machine body 1 through the first bearing 1111.

Referring to fig. 13 and 14, a second camshaft hole 121 is disposed at the first side wall 101 corresponding to the first camshaft hole 12, one end of the camshaft 9 is disposed in the first camshaft hole 12, the other end of the camshaft 9 is disposed in the second camshaft hole 121, a second bearing 91 is further disposed in the first camshaft hole 12, the second bearing 91 is located between the camshaft 9 and the second side wall 102, and a second oil passing groove 911 is disposed on the inner surface of the second bearing 91 along the circumferential direction of the camshaft 9.

The third oil passage 17 is communicated with the second oil passage 14 through a second oil through groove 911, and the engine oil in the second oil passage 14 lubricates the second bearing shoe 91 and enters the third oil passage 17 through the second oil through groove 911 to flow to the cylinder head oil passage 31. A second bearing 1211 is provided in the second cam shaft hole 121, and the cam shaft 9 is connected to the second bearing 1211 and is mounted on the machine body 1 through the second bearing 1211.

The main oil gallery 15, the first bearing 1111 and the second bearing 1211 are all arranged in a non-connected mode, the first bearing 1111 and the second bearing 1211 can be lubricated by oil gas in the machine body 1 or engine oil thrown out when parts work, and an oil way does not need to be additionally arranged to lubricate the first bearing 1111 and the second bearing 1211.

The engine oil in the oil pan 4 of the engine sequentially passes through the engine oil strainer 41, the hollow bolt 7, the fifth oil duct 22, the fourth oil duct 21, the engine oil pump 26, the sixth oil duct 23, the chamber cover output oil duct 24, the input oil duct 16 and the oil filter 5, then respectively flows to the two sides of the engine body 1 through the main oil duct 15, enters the first oil duct 13 and the second oil duct 14, further simultaneously lubricates the crankshaft 8 and the camshaft 9, the engine oil on one side of the crankshaft 8 lubricates a connecting rod bearing (not shown in the figure) through the crankshaft oil duct 82, and the engine oil on one side of the camshaft 9 flows to the cylinder head 3 through the third oil duct 17 to lubricate the rocker arm.

Each oil duct is a built-in linear oil duct, does not have an external oil pipe, has higher strength, does not have an external leakage point, rearranges the oil ducts, greatly reduces the number of the oil ducts, greatly shortens the conveying path of the engine oil, reduces the loss of the engine oil, improves the conduction speed of the engine oil, and ensures sufficient lubrication.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. An engine lubrication system, comprising:

a first bearing shell;

a second bearing shell;

2. The engine lubrication system of claim 1, further comprising a first bearing and a second bearing, wherein the crankshaft is coupled to the second sidewall via the first bearing, wherein the camshaft is coupled to the first sidewall via the second bearing, wherein the main oil gallery is axially disposed along the crankshaft, wherein the main oil gallery is in communication with an oil outlet of an oil filter and extends to both sides of the oil filter, and wherein the main oil gallery and the first and second bearings are both non-coupled.

3. The engine lubrication system of claim 2, wherein an input oil passage is provided in the housing in communication with the oil inlet of the oil filter, and an oil pump is provided in the gear chamber cover, and wherein the gear chamber cover includes a fourth oil passage in communication with the oil inlet of the oil pump, a fifth oil passage in communication with the fourth oil passage, a chamber cover output oil passage in communication with the input oil passage, and a sixth oil passage in communication with the oil outlet of the oil pump and the chamber cover output oil passage.

4. The engine lubrication system according to claim 3, further comprising a hollow bolt and an oil pan provided below the engine body, wherein an oil strainer for sucking oil is provided in the oil pan, the hollow bolt is fixed to the engine body, and the hollow bolt communicates the oil strainer and the fifth oil passage.

5. The engine lubrication system of claim 4, wherein the first sidewall defines a first through hole, the gear chamber cover includes a recess disposed coaxially with the first through hole, the recess is in communication with the fifth oil passage, and the hollow bolt extends through the first through hole and into the recess.

6. The engine lubrication system of claim 3, further comprising a cylinder head disposed above the engine block, a rocker arm seat secured to a top of the cylinder head, and a rocker arm shaft connected to the rocker arm seat, wherein a cylinder head oil passage is disposed in the cylinder head, the engine block further comprising a third oil passage extending upward from the second bearing shell and communicating the cylinder head oil passage with the second oil passage, wherein a rocker arm seat oil passage is disposed in the rocker arm seat and communicates with the cylinder head oil passage, and wherein a rocker arm shaft oil passage is disposed in the rocker arm shaft and communicates with the rocker arm seat oil passage.

7. The engine lubrication system according to claim 6, wherein a first oil hole pin is provided between the input oil passage and the chamber cover output oil passage, a part of the first oil hole pin being located in the body, and another part of the first oil hole pin being located in the gear chamber cover;

8. The engine lubrication system of claim 3, wherein the fifth oil passage is disposed horizontally and the fourth oil passage is disposed perpendicular to the fifth oil passage;

the chamber cover output oil duct is horizontally arranged, and the sixth oil duct is perpendicular to the chamber cover output oil duct.

9. The engine lubrication system of claim 6, wherein the first bearing inner surface is provided with a first oil through groove along the circumferential direction of the crankshaft, and a crankshaft oil passage is formed in the crankshaft and is communicated with the first oil passage through the first oil through groove;

10. The engine lubrication system of claim 1, wherein an oil pressure indicator connection is provided on the housing, the oil pressure indicator connection being connected to the main oil gallery.