CN114837844A

CN114837844A - Cylinder cover and engine

Info

Publication number: CN114837844A
Application number: CN202210614218.0A
Authority: CN
Inventors: 王进峰; 刘晓莹; 李寒磊
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-08-02

Abstract

The present invention provides a cylinder head, including: the water jacket of the upper layer is provided with a first water outlet, the first cavity comprises a second water outlet and a first water inlet, and the first water outlet is arranged above the first water inlet. The present invention also provides an engine comprising: organism, temperature saver shell and the cylinder cap, the cylinder cap bottom is located to the second delivery port, the organism top is equipped with organism return water mouth, second delivery port and organism return water mouth intercommunication, first delivery port and first water inlet all communicate with the temperature saver shell. The cylinder cover, the engine body and the thermostat shell are directly connected, the circulating water paths are all arranged in the engine, an external pipeline of the engine body is omitted, pressure loss is low, and efficiency is high.

Description

Cylinder cover and engine

Technical Field

The invention relates to the technical field of engines, in particular to a cylinder cover and an engine.

Background

During the operation of the engine, the combustion of the fuel and the friction between the moving parts generate a great deal of heat, which causes the parts to be heated intensively, and the cooling system is used for maintaining the engine to work at an optimum temperature. The conventional cooling system needs to be externally provided with a pipeline, so that the resistance of the pipeline is increased, the actual lift of the water pump is further reduced, and the requirements on an external space and the number of parts are increased. Therefore, it is desirable to provide a cylinder head and an engine to overcome the above-mentioned disadvantages.

Disclosure of Invention

The invention aims to provide a cylinder head and an engine.

According to one aspect of the present invention, there is provided a cylinder head comprising:

an upper water jacket;

the lower-layer water jacket is positioned below the upper-layer water jacket;

the partition plate is arranged between the upper-layer water jacket and the lower-layer water jacket and is provided with a connecting port for connecting the upper-layer water jacket and the lower-layer water jacket;

the water jacket of the upper layer comprises a first water outlet arranged on the side face of the cylinder cover, the first cavity comprises a second water outlet and a first water inlet arranged on the side face of the cylinder cover, and the first water outlet is arranged above the first water inlet.

Preferably, still include air inlet and the gas vent of relative setting, first delivery port and first water inlet all locate the one side at the gas vent place of cylinder cap.

Preferably, the water jacket further comprises a push rod hole and a side wall, the first cavity comprises a second partition plate extending from the push rod hole to the side wall, and the lower-layer water jacket and the first cavity are separated by the second partition plate.

Preferably, the baffle is located between the first water outlet and the first water inlet.

According to another aspect of the invention, an engine is provided, which comprises a machine body, a thermostat shell and the cylinder cover, wherein the second water outlet is arranged at the bottom of the cylinder cover, the top of the machine body is provided with a machine body water return port, the second water outlet is communicated with the machine body water return port, and the first water outlet and the first water inlet are both communicated with the thermostat shell.

Preferably, the water pump is further included, a machine body water outlet communicated with the machine body water return port and a machine body water inlet connected with the water pump are formed in the side face of the machine body, and the machine body water outlet is communicated with the water pump.

Preferably, the engine body is further provided with an engine oil cooling cavity and an engine body water jacket, the engine oil cooling cavity comprises a cooling cavity water inlet and a cooling cavity water outlet, the cooling cavity water inlet is communicated with the engine body water inlet, the cooling cavity water outlet is communicated with the engine body water jacket, and the engine body water jacket is communicated with the lower layer water jacket.

Preferably, the thermostat shell comprises a thermostat water inlet, a small circulation water outlet and a large circulation water outlet, the thermostat water inlet is connected with the first water outlet, and the small circulation water outlet is connected with the first water inlet.

Preferably, the first water inlet and the first water outlet are arranged on the same plane, the thermostat water inlet and the small circulation water outlet are arranged on the same plane, and the thermostat shell is directly fixed on the cylinder cover.

Preferably, the water pump is directly fixed on the machine body, the water inlet and the water outlet of the machine body are directly connected with the water pump, the machine body is further provided with an engine oil cooler cover, the engine oil cooler cover is buckled on the engine oil cooling cavity, and the water inlet and the water outlet of the cooling cavity are both arranged in the engine oil cooler cover.

Compared with the prior art, the cylinder cover and the engine provided by the invention have the following beneficial effects:

the circulation water route all sets up in the inside of engine, need not external water pipe. The pipeline resistance is small, and local pressure loss is small, guarantees that the actual lift of water pump accords with the needs of engine work. The cooling efficiency is high, and the damage rate of parts is low.

Drawings

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

FIG. 1 is an exploded view of an engine section assembly of the present invention;

FIG. 2 is a perspective view of the cylinder head of the present invention;

FIG. 3 is a cross-sectional view of the upper water jacket of the present invention;

FIG. 4 is a cross-sectional view of the lower water jacket of the present invention;

FIG. 5 is a cross-sectional view of the thermostat housing of the present invention;

FIG. 6 is a perspective view of the housing of the present invention;

fig. 7 is a cross-sectional view of the block water jacket 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 and may include, for example, 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. 1-4, the present invention discloses a cylinder head and an engine, comprising: the engine comprises a cylinder cover 1, a thermostat shell 2, a machine body 3 and a water pump 4. The cylinder head 1 includes an upper-stage water jacket 11, a lower-stage water jacket 12, and a partition plate 13 for partitioning the upper-stage water jacket 11 and the lower-stage water jacket 12. The partition plate 13 is provided with a connection port 131 for the flow of cooling water from the lower water jacket 12 to the upper water jacket 11. The upper water jacket 11 comprises a first water outlet 14, a first cavity 15 is further arranged in the cylinder cover, and the first cavity 15 comprises a first water inlet 16.

Referring to fig. 2, the cylinder head 1 includes an air inlet (not labeled) and an air outlet 17, which are disposed opposite to each other, and the first water outlet 14 and the first water inlet 16 are both disposed on a side surface of the cylinder head 1 where the air outlet 17 is located. The first water outlet 14 is disposed above the first water inlet 16 and is located on the same plane.

Referring to fig. 5, the thermostat housing 2 includes a large circulation water outlet 23, a thermostat water inlet 21 directly connected to the first water outlet 14, and a small circulation water outlet 22 directly connected to the first water inlet 16. The thermostat water inlet 21 and the small circulation water outlet 22 are positioned on the same plane. The thermostat shell 2 is directly fixed on the side surface of the cylinder cover 1 and fixed through bolts. The thermostat shell 2 is internally provided with a thermostat 24, when the temperature is lower, the thermostat 24 is closed, and cooling water enters from a thermostat water inlet 21 and then flows out from a small circulation water outlet 22. When the temperature is higher, the thermostat 24 is opened, and cooling water enters from the thermostat water inlet 21 and flows out from the large circulation water outlet 23.

Referring to fig. 3, a push rod hole 151 is formed in the cylinder head 1, and the cylinder head 1 further includes a side wall 152. The first cavity 15 and the lower water jacket 12 have the same height, and the first cavity 15 and the lower water jacket 12 are separated by a second partition 153 extending from the push rod hole 151 to the side wall 152. The partition 13 is located between the first water outlet 14 and the first water inlet 16. The first cavity 15 further comprises a second water outlet 18, and the second water outlet 18 is arranged at the bottom of the cylinder cover 1.

Referring to fig. 1 and 6, a machine body water return port 31 is provided at the top of the machine body 3, and a machine body water outlet port 32 is provided at the side of the machine body 3 on which the water pump 4 is provided. The water return port 31 extends downwards and then bends to extend and is connected with the water outlet 32 of the machine body to form a water channel. The machine body 3 is also provided with a machine body water inlet 33 which is positioned on the same side surface with the machine body water outlet 32. The water pump 4 is directly fixed on the machine body 3, and the water inlet 33 and the water outlet 32 of the machine body are both directly connected with the water pump 4.

The machine body 3 is further provided with an oil cooling chamber 5 and an oil cooler cover 51 covering the outside of the oil cooling chamber 5. The oil cooling chamber 5 and the exhaust port 17 are located on the same side of the body 3. The engine oil cooling chamber 5 comprises a cooling chamber water outlet 52 and a cooling chamber water inlet 53 which is directly communicated with the engine body water inlet 33. Referring to fig. 7, the body 3 is provided with a body water jacket 34 therein, and a cooling cavity water outlet 52 is communicated with the body water jacket 34.

The machine body water inlet 33 and the cooling chamber water inlet 53 are communicated through a water passage inside the machine body. The engine body water jacket 34 extends along the vertical direction, a plurality of water holes are correspondingly formed in the top of the engine body 3 and the bottom of the cylinder cover 1, and the gas water jacket 34 is communicated with the cylinder cover water jacket.

According to the cooling circulation water path of the engine disclosed by the invention, the thermostat is closed if the water temperature is low. The cooling water enters the engine body 3 from the water pump 4 through the engine body water inlet 33, passes through the internal water channel of the engine body, enters the engine oil cooling cavity 5 from the cooling cavity water inlet 53, and cools the engine oil in the engine oil cooler. The cooling water flows upwards from the cooling cavity water outlet 52 to enter the engine body water jacket 34 to cool the cylinder in the engine. The cooling water flows upwards in the engine body water jacket 34 and enters the cylinder cover 1 through the water holes at the top of the engine body 3.

The cooling water entering the cylinder head 1 fills the lower water jacket 12, flows to the upper water jacket 11 through the connecting port 131 on the partition plate 13, and fills the upper water jacket 11. The cooling water in the cylinder head 1 flows out of the cylinder head 1 from the first water outlet 14 and enters the thermostat housing 2 from the thermostat 24 water inlet 21. The water passes through the internal water channel of the thermostat shell 2 and then flows out of the small circulation water outlet 22, directly enters the first cavity 15 in the cylinder cover 1, flows out of the cylinder cover 1 from the second water outlet 18 at the bottom of the first cavity 15 and directly enters the engine body 3 from the engine body water return port 31. And finally returns to the water pump 4 from the body water outlet 32.

In the small circulation route of the cooling circulation water path of the engine, the thermostat is opened when the water temperature is high, cooling water enters the thermostat shell 1 from the cylinder cover 1, then flows out of the large circulation water outlet 23 through the thermostat 24, then enters the water tank through the external pipeline, and finally flows out of the water tank and returns to the water pump 4.

External pipelines are generally adopted by most non-road type small circulation water routes. After cooling water enters a cylinder cover water path to finish cylinder cover cooling, the cooling water enters a thermostat shell, and returns to a cylinder cover water return branch or a machine body water return branch or directly returns to a water pump water return area through an external pipeline arranged on the thermostat shell, so that a cooling water small circulation water path is finished. The external pipeline makes the little circulating line resistance increase, causes local pressure loss for the actual lift of water pump reduces. The use of the external pipeline increases the diversity of parts, needs the external space of the diesel engine, and is crowded once the external parts are increased.

According to the engine, the thermostat shell 2 is directly fixed on the cylinder cover 1, the water pump 4 is directly fixed on the engine body 3, an external pipeline is not needed depending on a water channel processed in the engine, pressure loss is small, cooling efficiency is high, and the damage rate of parts is low.

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. A cylinder head, comprising:

an upper water jacket;

the lower-layer water jacket is positioned below the upper-layer water jacket;

2. The cylinder head of claim 1, further comprising an intake port and an exhaust port disposed opposite each other, wherein the first water outlet and the first water inlet are disposed on a side of the cylinder head where the exhaust port is located.

3. The cylinder head of claim 1, further comprising a pushrod bore and a side wall, wherein the first cavity includes a second partition extending from the pushrod bore to the side wall, and wherein the lower water jacket and the first cavity are separated by the second partition.

4. The cylinder head of claim 1, wherein the baffle is positioned between the first water outlet and the first water inlet.

5. An engine, characterized in that, it comprises a body, a thermostat shell and a cylinder cover as claimed in any one of claims 1-4, the second water outlet is arranged at the bottom of the cylinder cover, the top of the body is provided with a body water return port, the second water outlet is communicated with the body water return port, and the first water outlet and the first water inlet are communicated with the thermostat shell.

6. The engine of claim 5, further comprising a water pump, wherein the side of the engine body is provided with an engine body water outlet communicated with the engine body water return port and an engine body water inlet connected with the water pump, and the engine body water outlet is communicated with the water pump.

7. The engine of claim 6, wherein the engine body is further provided with an oil cooling cavity and an engine body water jacket, the oil cooling cavity comprises a cooling cavity water inlet and a cooling cavity water outlet, the cooling cavity water inlet is communicated with the engine body water inlet, the cooling cavity water outlet is communicated with the engine body water jacket, and the engine body water jacket is communicated with the lower layer water jacket.

8. The engine of claim 5, wherein the thermostat housing includes a thermostat water inlet, a small cycle water outlet, and a large cycle water outlet, the thermostat water inlet being connected to the first water outlet, the small cycle water outlet being connected to the first water inlet.

9. The engine of claim 8, wherein said first water inlet and said first water outlet are disposed on a common plane, said thermostat water inlet and said small-circuit water outlet are disposed on a common plane, and said thermostat housing is directly secured to said cylinder head.

10. The engine of claim 6, wherein the water pump is directly fixed to the engine body, the water inlet and the water outlet of the engine body are directly connected to the water pump, the engine body is further provided with an oil cooler cover covering the oil cooling chamber, and the water inlet and the water outlet of the cooling chamber are both arranged in the oil cooler cover.