CN214787723U - Cooling structure of engine cylinder cover and vehicle - Google Patents

Cooling structure of engine cylinder cover and vehicle Download PDF

Info

Publication number
CN214787723U
CN214787723U CN202120323582.2U CN202120323582U CN214787723U CN 214787723 U CN214787723 U CN 214787723U CN 202120323582 U CN202120323582 U CN 202120323582U CN 214787723 U CN214787723 U CN 214787723U
Authority
CN
China
Prior art keywords
cooling
water cavity
cylinder head
side wall
cavity
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.)
Active
Application number
CN202120323582.2U
Other languages
Chinese (zh)
Inventor
李渴忻
薄琳
徐菁菁
康明明
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.)
Weichai Power Co Ltd
Original Assignee
Weichai Power Co Ltd
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 Weichai Power Co Ltd filed Critical Weichai Power Co Ltd
Priority to CN202120323582.2U priority Critical patent/CN214787723U/en
Application granted granted Critical
Publication of CN214787723U publication Critical patent/CN214787723U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The utility model relates to the technical field of machinery, a cooling structure and vehicle of engine cylinder head is disclosed. This cooling structure includes: a cylinder head body; a liner structure provided in the mounting hole of the cylinder head body; the upper-layer cooling water cavity is arranged in the cylinder cover body, and the lower-layer cooling water cavity and the connecting water cavity are arranged in the cylinder cover body; the connecting water cavity is arranged on the outer side of the bushing structure and is communicated with the upper-layer cooling water cavity and the lower-layer cooling water cavity; the connecting water cavity comprises a first cavity and a second cavity which are communicated; the connecting water cavity comprises a first side wall, a second side wall and a bottom wall connecting the first side wall and the second side wall, the first side wall, the bottom wall and the second side wall form a first cavity in a surrounding mode, the bottom wall is provided with a groove with an opening facing the direction of the lining structure, and the groove forms a second cavity. The cooling structure can improve the cooling effect by changing the structure of the cooling structure in the cylinder cover.

Description

Cooling structure of engine cylinder cover and vehicle
Technical Field
The application relates to the technical field of machinery, in particular to a cooling structure of an engine cylinder cover and a vehicle.
Background
Modern engines are becoming more and more intensive, with the accompanying increase in the cylinder implosion pressure. As a result, the thermal and mechanical loads experienced by the cylinder head are also progressively increased, which makes the existing cylinder head cooling water jacket unable to meet the cylinder head cooling requirements. Insufficient cylinder head cooling can result in excessive injector or spark plug liner temperatures and affect injector and spark plug performance and reliability. In addition, the insufficient cooling of the cylinder head can cause the local temperature of the cylinder head to be overhigh, so that the cracking phenomenon of the cylinder head is caused.
Therefore, it is highly desirable to provide a cooling structure for an engine cylinder head that can effectively exhibit a cooling effect.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an engine cylinder head's cooling structure and vehicle, above-mentioned engine cylinder head's cooling structure can promote the cooling effect through changing the cooling structure in the cylinder head.
In order to achieve the above purpose, the utility model provides the following technical scheme:
in a first aspect, the present application provides a cooling structure of an engine cylinder head, comprising:
a cylinder head body;
a bushing structure for placing a fuel injector or a spark plug, the bushing structure being disposed in the mounting hole of the cylinder head body;
an upper cooling water cavity disposed within the cylinder head body;
the lower-layer cooling water cavity is arranged in the cylinder cover body and is positioned below the upper-layer cooling water cavity;
the connecting water cavity is arranged on the outer side of the bushing structure and is communicated with the upper-layer cooling water cavity and the lower-layer cooling water cavity; the connecting water cavity comprises a first cavity and a second cavity which are communicated; the connecting water cavity comprises a first side wall, a second side wall and a bottom wall connected with the first side wall and the second side wall, the first side wall, the bottom wall and the second side wall surround and form the first chamber, the bottom wall is provided with a groove with an opening facing to the direction of the lining structure, and the groove forms the second chamber.
In the cooling structure of the engine cylinder head, the cooling structure comprises a cylinder head body, a lining structure, an upper-layer cooling water cavity, a lower-layer cooling water cavity and a connecting water cavity, wherein a fuel injector or a spark plug is arranged in the lining structure, and the lining structure is arranged in a mounting hole of the cylinder head body; inside cylinder body was all located to upper cooling water cavity, lower floor's cooling water cavity and connection water cavity, connection water cavity connection upper cooling water cavity and lower floor's cooling water cavity. When cooling liquid flows in the cooling structure, the cooling liquid flows in sequence along the upper-layer cooling water cavity, the connecting water cavity and the lower-layer cooling water cavity, and when the cooling liquid flows through the connecting water cavity, the connecting water cavity is arranged on the outer side of the lining structure, so that the cooling liquid can cool the lining structure.
The application provides a connect water cavity in engine cylinder head's cooling structure includes first cavity and second cavity, and specifically, first cavity bottom wall has the recess of opening towards bushing structure direction, and the recess forms the second cavity. When the cooling liquid flows through the first chamber and the second chamber, the flowing form of the cooling liquid in the connecting water cavity is changed, more cooling liquid flows along the extending direction of the lining structure and the side, close to the fire side, of the cylinder cover, so that the temperature of a fuel injector or a spark plug arranged in the lining structure can be reduced, the temperature of the cylinder cover is even reduced, and the cooling effect is improved.
Therefore, the cooling structure of the engine cylinder head can improve the cooling effect by changing the structure of the cooling structure in the cylinder head.
Preferably, the groove is an arc-shaped groove protruding in a direction away from the liner structure.
Preferably, the radius of the arc-shaped groove is 4-6 mm.
Preferably, a transition fillet structure is arranged between the wall surface forming the groove and the bottom wall, and the transition fillet structure protrudes towards the direction of the bushing structure.
Preferably, a transition fillet structure is arranged at the joint of the first side wall and the bottom wall, and the transition fillet structure protrudes in a direction deviating from the direction of the bushing structure; and/or the presence of a gas in the gas,
the junction of second lateral wall with the diapire is equipped with transition fillet structure, transition fillet structure is protruding to deviating from bush structure direction.
Preferably, the radius of the transition fillet structure is 1-3 mm.
In a second aspect, the present application further provides a vehicle, including an engine cylinder head, the engine cylinder head being provided with any one of the cooling structures provided in the above technical solutions.
Drawings
FIG. 1 is a block diagram of a cylinder head of an engine according to an embodiment of the present disclosure;
FIG. 2 is a partial cross-sectional view of the structure of FIG. 1;
FIG. 3 is a schematic view of the direction of liquid flow within the cooling structure of FIG. 2;
fig. 4 is a schematic perspective view of a cooling structure provided in an embodiment of the present application;
FIG. 5 is a partial cross-sectional view of the structure of FIG. 4;
FIG. 6 is a prior art flow cloud of a cylinder head in the region of the nose bridge between the exhaust valve and the exhaust valve;
FIG. 7 is an enlarged schematic view at F' of FIG. 6;
FIG. 8 is a flow cloud of a cylinder head in a region of a nose bridge between an exhaust valve and an exhaust valve according to an embodiment of the present disclosure;
FIG. 9 is an enlarged schematic view at F of FIG. 8;
FIG. 10 is a prior art flow cloud of a cylinder head on the side of the flame plane in the region of the nose bridge between the exhaust valve and the exhaust valve;
FIG. 11 is a flow velocity cloud of a cylinder head in a bridge region between an exhaust valve and an exhaust valve on a fire side in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The cooling structure that this application embodiment provided is applied to engine cylinder head, and this engine can be diesel engine or gasoline engine. When the engine is a diesel engine, a fuel injector is generally arranged in a cylinder cover, and the fuel in the cylinder is self-ignited by adopting a compression ignition mode; when the engine is a gasoline engine, a spark plug is generally arranged in the cylinder cover, and the ignition operation of fuel in the cylinder is realized by adopting the spark plug for ignition.
For example, in the structure shown in fig. 1, an intake valve 01 and an exhaust valve 02 are arranged on an engine cylinder head 001, a nose bridge area is formed between adjacent valves, and when the cooling effect of the cooling structure cannot meet the requirement, a crack a is formed in the nose bridge area.
In order to more intuitively illustrate the structure of the cylinder head 001, fig. 2 is a partial sectional view between two exhaust valves 02 in the cylinder head 001 shown in fig. 1. As shown in fig. 2, the cylinder head 001 is further provided with a liner structure 03, in which an injector or an ignition plug can be mounted, and a cooling structure 04 is provided on the peripheral side of the liner structure 03, where a region B is a nose bridge region where a crack a is generated in fig. 1, and a surface c side of the nose bridge region B is a combustion surface of the cylinder head 001 facing the cylinder internal combustion direction. Fig. 3 shows a schematic view of the direction of liquid flow in the cooling structure 04 of fig. 2.
Based on this, the embodiment of the application provides a cooling structure 04 of engine cylinder head, can promote the cooling effect. Specifically, the cooling structure 04 is provided in the cylinder head 001, and when the liquid flows through the cooling structure 04, the liquid flows through the upper water chamber 041, the connecting water chamber 042, and the lower water chamber 043 in this order, and the connecting water chamber 042 functions as an upper water chamber 041 and a lower water chamber 043. Notably, the liner structure 03 cooperates with portions of the cylinder head 001 to form a flowing water cavity with the cooling structure 04. Here, only the upper water chamber 041, the connecting water chamber 042 and the lower water chamber 043 are defined for cooling the structure 04. The structure of connecting water cavity 042 department is optimized in this application embodiment to promote whole cooling structure 04's cooling effect.
Fig. 4 is a schematic perspective view of a cooling structure 04 provided in the embodiment of the present application, and fig. 5 is a cross-sectional view of the cooling structure 04 between two exhaust valves 02 at a connecting water cavity 042. The connecting water cavity 042 in the embodiment of the application comprises a first cavity and a second cavity which are communicated; specifically, the connecting water cavity comprises a first side wall d1, a second side wall d2 and a bottom wall d3 connecting the first side wall d1 and the second side wall d2, the first side wall d1, the bottom wall d2 and the second side wall d3 form a first chamber in a surrounding mode, the bottom wall d3 is provided with a groove E which is opened towards the direction of the bushing structure 03, and the groove E forms a second chamber. It should be understood that when the cooling liquid flows through the connecting water chamber 042, the cooling liquid can cool the liner structure 03 because the connecting water chamber 042 is provided outside the liner structure 03.
It should be noted that, in the cooling structure 04 of the engine cylinder head provided in the present application, the connecting water cavity 042 includes a first cavity and a second cavity, when the cooling liquid flows through the first cavity and the second cavity, the flow pattern of the cooling liquid in the connecting water cavity 042 is changed, and more cooling liquid flows along the extending direction of the bushing structure 03 and the nose bridge area B close to the fire side c, so that the temperature of the injector or the spark plug disposed in the bushing structure 03 can be reduced, and even the temperature of the cylinder head 001 can be reduced, and the cooling effect can be improved.
Therefore, the cooling structure of the engine cylinder head can improve the cooling effect of the cooling structure 04 by changing the structure of the cylinder head internal cooling structure 04.
Therefore, the cooling structure of the engine cylinder head can improve the cooling effect by changing the structure of the cooling structure in the cylinder head.
On the basis of the above technical solution, in order to better change the flowing direction of the cooling liquid in the connecting water cavity 042, it is preferable to provide the grooves E as arc-shaped grooves protruding in a direction away from the liner structure.
Optionally, the radius R1 of the arcuate slot E is 4-6 millimeters. Illustratively, R1 is 5 mm.
On the basis of the technical scheme, in order to further change the flowing direction of the cooling liquid in the connecting water cavity 042, a transition fillet structure is arranged between the wall surface forming the groove E and the bottom wall d3, and the transition fillet structure protrudes towards the direction of the bushing structure 03.
On the basis of the above technical solution, in order to further change the flow direction of the cooling liquid in the connecting water cavity, in a possible embodiment, a transition fillet structure R2 may be provided at the junction of the first side wall d1 and the bottom wall d3, and the transition fillet structure R2 protrudes away from the bushing structure.
In another possible embodiment, the junction of the second side wall d2 and the bottom wall d3 may be provided with a transition radius structure R3, and the transition radius structure R3 protrudes away from the bushing structure 03.
In another possible embodiment, the junction of the first side wall d1 and the bottom wall d3 may be provided with a transition radius structure R2, and the transition radius structure R2 protrudes away from the bushing structure 03. Meanwhile, a transition fillet structure R3 can be arranged at the joint of the second side wall d2 and the bottom wall d3, and the transition fillet structure R3 protrudes in the direction away from the bushing structure 03.
On the basis of the technical scheme, the transition fillet structure R2 and/or the transition fillet structure R3 can be 1-3 mm. Illustratively, both R2 and R3 are 2 mm.
Of course, the fillet structure R3 between the first side wall d1 and the bottom wall d3 may be the same as or different from the fillet structure R3 between the second side wall d2 and the bottom wall d3, and may be specifically set according to the requirement.
FIG. 6 is a prior art flow cloud of a cylinder head in the region of the nose bridge between the exhaust valve and the exhaust valve. Fig. 7 is an enlarged schematic view at F' in fig. 6. FIG. 8 is a flow velocity cloud plot of a cylinder head in a region of a nose bridge between an exhaust valve and an exhaust valve in an embodiment of the present disclosure. Fig. 9 is an enlarged schematic view at F in fig. 8. FIG. 10 is a prior art flow cloud of a cylinder head on the side of the flame plane in the region of the nose bridge between the exhaust valve and the exhaust valve; FIG. 11 is a flow velocity cloud of a cylinder head in a bridge region between an exhaust valve and an exhaust valve on a fire side in an embodiment of the present application. It is noted that in fig. 6 to 9, the dark color in each figure indicates high flow rate and the light color indicates low flow rate; in fig. 10 and 11, the dark color indicates low flow rate, and the light color indicates high flow rate.
To more clearly show the differences between the present application and the prior art cylinder head cooling structure, please refer to the region g 'in fig. 7 and the region g in fig. 9, and the region h' in fig. 10 and the region h in fig. 11. As can be seen from fig. 7, 9, 10 and 11, the coolant flow pattern changes, and flows more along the extending direction of the liner structure 03 and the side of the nose bridge area close to the fire side at the same flow rate, so that the heat exchange capacity at two positions can be enhanced, and the temperature can be reduced.
In a second aspect, the present application further provides a vehicle, including an engine cylinder head, where the engine cylinder head is provided with any one of the cooling structures provided in the above technical solutions.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present application and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (7)

1. A cooling structure of an engine cylinder head, characterized by comprising:
a cylinder head body;
a bushing structure for placing a fuel injector or a spark plug, the bushing structure being disposed in the mounting hole of the cylinder head body;
an upper cooling water cavity disposed within the cylinder head body;
the lower-layer cooling water cavity is arranged in the cylinder cover body and is positioned below the upper-layer cooling water cavity;
the connecting water cavity is arranged on the outer side of the bushing structure and is communicated with the upper-layer cooling water cavity and the lower-layer cooling water cavity; the connecting water cavity comprises a first cavity and a second cavity which are communicated; the connecting water cavity comprises a first side wall, a second side wall and a bottom wall connected with the first side wall and the second side wall, the first side wall, the bottom wall and the second side wall surround and form the first chamber, the bottom wall is provided with a groove with an opening facing to the direction of the lining structure, and the groove forms the second chamber.
2. The cooling structure of claim 1 wherein said grooves are arcuate grooves that project away from said liner structure.
3. The cooling structure according to claim 2, wherein the radius of the arc-shaped groove is 4 to 6 mm.
4. The cooling structure according to claim 2, wherein a transition radius structure is provided between the wall surface forming the recess and the bottom wall, and the transition radius structure protrudes toward the liner structure.
5. A cooling structure according to any one of claims 1 to 3, wherein the junction of the first side wall and the bottom wall is provided with a transition fillet structure which projects away from the liner structure; and/or the presence of a gas in the gas,
the junction of second lateral wall with the diapire is equipped with transition fillet structure, transition fillet structure is protruding to deviating from bush structure direction.
6. The cooling structure of claim 4, wherein the radius of the transition fillet structure is 1-3 mm.
7. A vehicle, characterized by comprising an engine cylinder head provided with a cooling structure according to any one of claims 1 to 6.
CN202120323582.2U 2021-02-04 2021-02-04 Cooling structure of engine cylinder cover and vehicle Active CN214787723U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120323582.2U CN214787723U (en) 2021-02-04 2021-02-04 Cooling structure of engine cylinder cover and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120323582.2U CN214787723U (en) 2021-02-04 2021-02-04 Cooling structure of engine cylinder cover and vehicle

Publications (1)

Publication Number Publication Date
CN214787723U true CN214787723U (en) 2021-11-19

Family

ID=78750456

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120323582.2U Active CN214787723U (en) 2021-02-04 2021-02-04 Cooling structure of engine cylinder cover and vehicle

Country Status (1)

Country Link
CN (1) CN214787723U (en)

Similar Documents

Publication Publication Date Title
JP2013528255A (en) Spark ignition engine piston
KR20080094379A (en) Structure of cylinder head unified exhaust manifold
CN214787723U (en) Cooling structure of engine cylinder cover and vehicle
JP2009293611A (en) Engine piston
US2622579A (en) Combustion chamber for internal-combustion engines
CN210509412U (en) Cylinder cover of diesel engine
KR20030024541A (en) Direct-injection type diesel engine
KR100936980B1 (en) Cylinder Head
JP2001234807A (en) Cylinder head
JP4248521B2 (en) In-cylinder direct injection internal combustion engine
JP4465849B2 (en) Spark ignition direct injection engine
JP2001050106A (en) Cylinder head structure of internal combustion engine
GB2081809A (en) Direct Fuel Injection Internal Combustion Engine
CN217898024U (en) Cylinder body water jacket, cooling module of engine and vehicle
CN217176763U (en) Engine cylinder cover body and vehicle with same
JP3494335B2 (en) Internal combustion engine
JP3170007B2 (en) Squish structure of spark ignition engine
JP3098603B2 (en) Engine cooling structure
JPS638832Y2 (en)
JP2565322Y2 (en) Cylinder head structure of direct injection diesel engine
JPS5870039A (en) Piston of internal-combustion engine
JPS603313Y2 (en) internal combustion engine
KR101371483B1 (en) Cylinder head for vehicle
JPH10213006A (en) Cylinder block of engine
CN116480455A (en) Prechamber assembly and prechamber cooling system

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant