CN114458410A

CN114458410A - Engine

Info

Publication number: CN114458410A
Application number: CN202210003896.3A
Authority: CN
Inventors: 张奇; 郝昂昂; 王进峰; 李志元
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-05-10

Abstract

The present invention provides an engine, comprising: the engine body comprises an air inlet side and an air outlet side which are arranged oppositely, a main oil duct is arranged in the engine body, and an oil sump is arranged at the bottom of the engine body; the oil filter is arranged on the exhaust side; the first oil channel is communicated with the oil pan; the gear chamber cover is internally provided with a first cavity which is communicated with the first oil duct; the oil pump is arranged in the first cavity; the second oil duct is communicated with the first cavity and the oil filter; and the third oil duct extends from the exhaust side to the air inlet side, and is communicated with the oil filter and the main oil duct. According to the invention, the oil filter is arranged on the exhaust side of the engine, so that the arrangement scheme is more flexible, the oil lubricating route is more reasonable, and the crankshaft and the camshaft can be lubricated more efficiently.

Description

Engine

Technical Field

The invention relates to the technical field of engines, in particular to a lubricating oil passage of an engine.

Background

In the prior art, an oil filter is usually disposed on an intake side of an engine, and engine oil directly enters a main oil gallery after passing through the oil filter, and then sequentially lubricates various components of the engine. The exhaust side space of the engine is larger relative to the air inlet side, the assembly positions of all parts of the engine are more flexible, and the arrangement scheme of the air inlet side is more limited. Therefore, there is a need for an engine that overcomes the above-mentioned deficiencies.

Disclosure of Invention

The invention aims to provide a lubricating oil way of an engine.

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

the engine body comprises an air inlet side and an air outlet side which are arranged oppositely, a main oil channel is arranged in the engine body, an oil pan is arranged at the bottom of the engine body, air enters from the air inlet side, and combusted waste gas is discharged from the air outlet side;

the oil filter is arranged on the exhaust side;

the first oil duct is arranged in the machine body and communicated with the oil pan;

the gear chamber cover is internally provided with a first cavity which is communicated with the first oil duct;

the oil pump is arranged in the first cavity;

the second oil duct is arranged in the machine body and is communicated with the first cavity and the oil filter;

a third oil passage extending from the exhaust side to the intake side, the third oil passage communicating with the oil filter and the main oil passage;

the engine oil sequentially passes through the first oil duct, the first cavity, the engine oil pump, the second oil duct, the engine oil filter and the third oil duct from the oil pan, and finally enters the main oil duct.

Preferably, the first oil duct extends upwards from the bottom of the machine body and is bent towards the direction of the gear chamber cover, the first oil duct comprises a first oil port located on the end face of the machine body close to one side of the gear chamber cover, an oil inlet is arranged on the inner end face of the gear chamber cover, and the oil inlet is communicated with the first oil port.

Preferably, the first cavity comprises an oil inlet cavity and an oil outlet cavity, the gear chamber cover further comprises an oil outlet channel and an oil inlet channel communicated with the oil inlet and the oil inlet cavity, an oil outlet is further formed in the inner end face of the gear chamber cover, and the oil outlet channel is communicated with the oil outlet and the oil outlet cavity.

Preferably, the second oil passage comprises a second oil port located on one side end face of the machine body close to the gear chamber cover, and the second oil port is communicated with the oil outlet.

Preferably, still be equipped with fourth oil duct, bent axle installation department and camshaft installation department in the organism, the fourth oil duct extends to the camshaft installation department from the bent axle installation department, fourth oil duct and third oil duct are alternately and communicate each other.

Preferably, be equipped with first mounting hole in the first cavity, the oil feed chamber is including the oil feed tank of locating first mounting hole circumferencial direction and the first oil storage portion of intercommunication oil feed tank and oil feed way, the oil outlet chamber is including the oil outlet groove of locating first mounting hole circumferencial direction and the second oil storage portion of intercommunication oil outlet groove and oil outlet way.

Preferably, still including fixing the machine oil pump cover on the gear chamber cover, be equipped with the second cavity on the machine oil pump cover, the second cavity is located one side that the machine oil pump cover is close to first cavity, the second cavity corresponds first cavity setting.

Preferably, the engine oil pump cover is further provided with a pressure release valve, the pressure release valve is located on one side close to the engine body, and the pressure release valve comprises a third oil port arranged in the second cavity and a fourth oil port arranged along the radial direction of the pressure release valve.

Preferably, still include bent axle and pulley assembly, pulley assembly includes first main part and the first installation department of extending to gear chamber cover inboard from first main part, bent axle front end is located to first installation department cover, the radial outer end of first installation department is equipped with first spacing portion.

Preferably, the radial outside at first installation department is established to the inner rotor cover, the inner rotor includes the inner rotor mounting hole, the inner rotor mounting hole is equipped with the spacing portion of second, first spacing portion and the spacing portion of second are mutually supported, and inner rotor and belt pulley subassembly are each other non-relative rotation setting.

Compared with the prior art, the engine provided by the invention has the following beneficial effects:

the oil filter is arranged on the exhaust side of the engine, and the arrangement space is large. The engine oil lubricating route is more reasonable, and the crankshaft and the camshaft can be lubricated more efficiently. The manufacturing process is simple.

Drawings

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

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

FIG. 2 is an exploded view of the gear chamber cover of the present invention;

FIG. 3 is a cross-sectional view of a gear chamber cover of the present invention;

FIG. 4 is a perspective view of the engine block of the present invention;

FIG. 5 is a cross-sectional view of the engine block of the present invention;

FIG. 6 is a partial cross-sectional view of a gear chamber cover of the present invention;

FIG. 7 is a front view of a gear chamber cover of the present invention;

FIG. 8 is a partial cross-sectional view of the engine oil pump cover of the present invention;

FIG. 9 is a front view of a sump pump cover of the present invention;

fig. 10 is an exploded view of the front end structure of the crankshaft of the present invention.

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, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. 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 and 3, the present invention discloses an engine 100 comprising: the engine oil pump comprises a gear chamber cover 1, an oil pump 2, a belt pulley assembly 3, an oil pump cover 4, a crankshaft 5, an engine body 6, an oil filter 7 and an oil sump 8. The gear chamber cover 1 is arranged at the front end of the machine body 6, and the oil pan 8 is arranged at the bottom of the machine body 6. Referring to fig. 5, the body 6 includes an intake side 601 and an exhaust side 602, and the oil filter 7 is provided on the exhaust side 602 of the body 6.

Referring to fig. 4, the end surface of the body 6 close to the gear chamber cover 1 is taken as the front end surface. The bottom of the machine body 6 is provided with a first oil duct 61, the first oil duct 61 extends upward from the bottom surface of the machine body 6 and is bent toward the front end surface, and the first oil duct 6 includes a first oil port 611 located on the front end surface. The body 6 is further provided with a second oil passage 62, the second oil passage 62 is communicated with the oil filter 7, and the second oil passage 62 includes a second oil port 621 located on the front end surface.

Referring to fig. 2, a first cavity 10 is arranged inside the gear chamber cover 1. The oil pump 2 comprises an inner rotor 21 and an outer rotor 22, and the oil pump 2 is arranged in the first cavity 10. An oil inlet 1011 and an oil outlet 1021 are arranged on the inner end face of the gear chamber cover 1. Referring to fig. 6, the first chamber 10 includes an oil inlet chamber 11 and an oil outlet chamber 12, the oil inlet 1011 communicates with the oil inlet chamber 11 through an oil inlet passage 101, and the oil outlet chamber 12 communicates with an oil outlet 1021 through an oil outlet passage 102.

Referring to fig. 5, the body 6 is also provided therein with a third oil passage 63, a fourth oil passage 64, a main oil passage 68, a crankshaft mounting portion 65 for arranging the crankshaft 5, and a camshaft mounting portion 66 for arranging the camshaft. The third oil passage 63 extends from the exhaust side 602 of the engine body 6 in the direction of the intake side 601 and communicates the oil filter 7 and the main oil passage 68. The fourth oil passage 64 extends from the crankshaft mounting portion 65 in the direction of the camshaft mounting portion 66, and the fourth oil passage 64 and the third oil passage 63 are arranged to intersect.

Referring to fig. 2 and 6, an oil inlet channel 101 and an oil outlet channel 102 are further disposed in the gear chamber cover 1 and located on two sides of the first chamber 10, respectively. The oil inlet channel 101 extends from the oil inlet 1011, and the oil outlet channel 102 extends from the oil outlet 1021. The first oil port 611 communicates with the oil inlet 1011, and the second oil port 621 communicates with the oil outlet 1021. The first oil passage 61 communicates with the oil pan 8.

The engine oil is sucked into the first oil passage 61 from the oil pan 8 by a strainer (not labeled), enters the oil inlet cavity 11 through the oil inlet channel 101, is pumped into the oil outlet cavity 12 by the engine oil pump 2, and then sequentially enters the oil filter 7 through the oil outlet channel 102 and the second oil passage 61. The oil filtered by the oil filter 7 is supplied from the third oil passage 63 to the intake side 601.

The engine oil in the third oil passage 63 first reaches the fourth oil passage 64 and flows to both ends of the fourth oil passage 64, respectively lubricating the crankshaft 5 and the camshaft (not labeled). And to the main oil gallery 68 for lubrication of other engine components. The fourth oil passage 64 is located above the crankshaft mounting portion 65. In this embodiment, the fourth oil passage 64 and the third oil passage 63 are arranged in a crossing manner, and engine oil can directly lubricate a gear and a camshaft after passing through the filter, so that the lubricating efficiency is improved.

In this embodiment, a first filter mounting seat 67 is provided on the exhaust side 602 of the housing 6, while a second filter mounting seat (not shown) is machined on the intake side 601 of the housing 6. First filter mount pad 67 and second filter mount pad can select one of them for use according to the actual work demand of engine. The oil filter 7 can be mounted on the air outlet side 602, especially when the space on the air inlet side 601 is limited and the oil filter cannot be mounted.

Referring to fig. 6 and 7, the first cavity 10 includes a first mounting hole 13 for arranging the crankshaft 5. The oil inlet chamber 11 includes an oil inlet groove 112 formed in the circumferential direction of the first mounting hole 13, and a first oil reservoir 111 communicating the oil inlet groove 112 and the oil inlet passage 101. The oil outlet chamber 12 includes an oil outlet groove 122 provided in the circumferential direction of the first mounting hole 13, and a second oil reservoir 121 communicating the oil outlet groove 122 and the oil outlet passage 102.

The oil inlet groove 112 and the oil outlet groove 122 are respectively arranged on two sides of the first mounting hole 13 in the diameter direction. The inner rotor 21 rotates the outer rotor 22 and forms a low pressure chamber 201 and a high pressure chamber 202 with each other. The low pressure chamber 201 communicates with the oil inlet groove 112, and the high pressure chamber 202 communicates with the oil outlet groove 122. Referring to fig. 10, the inner rotor 21 includes an inner rotor mounting hole 201, and a second stopper 211 is provided in the inner rotor mounting hole 201.

The pulley assembly 3 includes a first body portion 32 located outside the gear chamber cover 1 and a first mounting portion 31 extending from the first body portion 32 in the direction of the crankshaft 5. The first mounting portion 31 is fitted over the front end of the crankshaft 5 and both are positioned by a pin. The first mounting portion 31 is provided at its radially outer end with a first stopper portion 311. The second limiting portion 211 and the first limiting portion 311 are matched through a plane, the inner rotor 21 is sleeved at the radial outer end of the first mounting portion 31, and the inner rotor 21 is driven by the crankshaft 5.

Referring to fig. 2, 8, and 9, the engine oil pump cover 4 includes a relief valve 41, a second cavity 42 provided on the first cavity 10 side, and a second mounting hole 43. The second mounting hole 43 and the first mounting hole 13 are coaxially arranged. The second cavity 42 is disposed corresponding to the first cavity 10, and the second cavity 42 includes a first oil chamber 421 disposed corresponding to the oil inlet chamber 11 and a second oil chamber 422 disposed corresponding to the oil outlet chamber 12.

The relief valve 41 includes a third port 411 provided in the second oil chamber 422, a fourth port 412 provided along a radial direction thereof, and a spool 413 provided between the third port 411 and the fourth port 412. The relief valve 41 is provided obliquely outside the oil pump cover 4. When the oil pressure in the second oil chamber 422 is overloaded, the spool 413 moves upward in the axial direction of the relief valve 41. The valve body 413 is opened, the third port 411 and the fourth port 412 are communicated, the fourth port 412 is communicated with the outside of the oil pump 2, and the oil directly returns to the oil pan 8.

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, comprising:

the oil filter is arranged on the exhaust side;

the oil pump is arranged in the first cavity;

2. The engine of claim 1, wherein the first oil passage extends upward from the bottom of the engine body and is bent toward the gear chamber cover, the first oil passage comprises a first oil port located on an end surface of the engine body on a side close to the gear chamber cover, an oil inlet is arranged on an inner end surface of the gear chamber cover, and the oil inlet is communicated with the first oil port.

3. The engine of claim 2, wherein the first cavity includes an oil inlet chamber and an oil outlet chamber, the gear chamber cover further includes an oil outlet passage and an oil inlet passage communicating the oil inlet and the oil inlet chamber, the gear chamber cover further has an oil outlet port on an inner end surface thereof, and the oil outlet passage communicates the oil outlet port and the oil outlet chamber.

4. The engine of claim 3, wherein the second oil passage comprises a second oil port located on an end surface of the engine body on a side close to the gear chamber cover, and the second oil port is communicated with the oil outlet.

5. The engine of claim 1, wherein a fourth oil passage, a crankshaft mounting portion and a camshaft mounting portion are further provided in the body, the fourth oil passage extending from the crankshaft mounting portion to the camshaft mounting portion, the fourth oil passage and the third oil passage intersecting and communicating with each other.

6. The engine of claim 3, wherein a first mounting hole is formed in the first cavity, the oil inlet chamber includes an oil inlet groove formed in a circumferential direction of the first mounting hole and a first oil storage portion communicating the oil inlet groove with the oil inlet passage, and the oil outlet chamber includes an oil outlet groove formed in a circumferential direction of the first mounting hole and a second oil storage portion communicating the oil outlet groove with the oil outlet passage.

7. The engine of claim 1, further comprising a pump cover secured to the gear chamber cover, the pump cover having a second cavity disposed on a side of the pump cover adjacent the first cavity, the second cavity being disposed opposite the first cavity.

8. The engine of claim 7, wherein the engine oil pump cover further includes a pressure relief valve positioned on a side adjacent the engine body, the pressure relief valve including a third oil port positioned in the second chamber and a fourth oil port positioned radially along the pressure relief valve.

9. The engine of claim 1, further comprising a crankshaft and a pulley assembly, wherein the pulley assembly comprises a first main body part and a first mounting part extending from the first main body part to the inner side of the gear chamber cover, the first mounting part is sleeved at the front end of the crankshaft, and a first limiting part is arranged at the radial outer end of the first mounting part.

10. The engine of claim 9, characterized in that the inner rotor is sleeved on the radial outer side of the first mounting part, the inner rotor comprises an inner rotor mounting hole, the inner rotor mounting hole is provided with a second limiting part, the first limiting part and the second limiting part are mutually matched, and the inner rotor and the belt pulley component are arranged in a non-relative rotation manner.