CN109630304B - Cylinder head water jacket structure capable of improving cold starting performance of engine and engine cooling system - Google Patents
Cylinder head water jacket structure capable of improving cold starting performance of engine and engine cooling system Download PDFInfo
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- CN109630304B CN109630304B CN201811394106.9A CN201811394106A CN109630304B CN 109630304 B CN109630304 B CN 109630304B CN 201811394106 A CN201811394106 A CN 201811394106A CN 109630304 B CN109630304 B CN 109630304B
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- water jacket
- cylinder head
- engine
- water outlet
- head water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
Abstract
The invention discloses a cylinder cover water jacket structure capable of improving the cold starting performance of an engine and an engine cooling system, which comprise a cylinder cover water jacket body, wherein a cylinder cover water jacket water outlet cavity, an engine oil cooler water outlet hole and an engine body water outlet are arranged on the cylinder cover water jacket body, the engine oil cooler water outlet hole and the engine body water outlet are both communicated with the cylinder cover water jacket water outlet cavity, a buffer cavity is arranged between the cylinder cover water jacket water outlet cavity and the engine oil cooler water outlet hole, one end of the buffer cavity is communicated with the cylinder cover water jacket water outlet cavity, and the other end of the buffer cavity is communicated with the engine oil cooler water. The invention has simple structure, and can reasonably distribute the two paths of flow of the cooling liquid heated by the small circulation pipeline, so that more cooling liquid for heating the engine body flows into the engine body.
Description
Technical Field
The invention relates to a cylinder cover water jacket structure, belongs to the technical field of machining equipment, and particularly relates to a cylinder cover water jacket structure capable of improving the cold starting performance of an engine and an engine cooling system comprising the same.
Background
When the gasoline engine is in cold start, the temperature in the cylinder and engine oil is low, the fuel atomization effect is poor, the mixed gas needs to be enriched to ensure the dynamic property, at the moment, the mixed gas is insufficiently combusted, so that the oil consumption is increased, the emission of HC and CO is increased, and the fuel economy and the emission performance of the engine are deteriorated; in addition, the oil is in a solidified or precipitated state at the time of cold start, so that the lubricating performance is reduced, the abrasion of moving parts of the engine is increased, and the reliability of the engine is affected.
In order to reduce the adverse effect of the cold start, a large circulation pipeline and a small circulation pipeline are arranged in a common engine cooling system. When the engine cold starts, the thermostat closes, and the coolant liquid can promote the coolant liquid temperature fast through little circulating line not through radiator fan, and the coolant liquid is divided into two after the heating of little circulating line flow through: one path is communicated with the engine body, the other path is communicated with the engine oil cooler, the larger the flow rate and the longer the time of the cooling liquid flowing into the engine are, the higher the warming speed and the normal operation of the engine can be, the emission and the oil consumption performance of the engine in the cold starting stage can be effectively improved, and the abrasion of the engine can be reduced.
In chinese utility model patent CN202100318U, an engine cooling system structure, especially relates to a big small circulation structure of engine cooling system, and its small circulation structure includes water pump, cylinder block water jacket, cylinder head water jacket, cooling water channel etc., wherein, has set up a throttle aperture in small circulation structure. The present specification describes: the arrangement of the throttling small hole can reduce the flow of cooling water during small circulation of the engine, improve the cold starting performance of the engine and accelerate the warming-up process, and as can be seen from the specification and the attached drawings, the technical scheme has the following defects: 1. the throttling small holes reduce the flow rate of cooling water during small circulation on the whole, but do not change the flow proportion of cooling liquid entering the engine body and cooling liquid entering the engine oil cooler after being divided into two parts through a small circulation pipeline, namely the total flow rate of the cooling water is reduced, and the flow dividing proportion of the cooling liquid is unchanged, so that the amount of the cooling liquid flowing into the engine body is substantially reduced, therefore, the technical scheme only increases the time consumed by warming up and reduces the warming up efficiency; 2. the above technical solutions do not clearly disclose the structure of the orifice and the specific location of its arrangement, and a person skilled in the art cannot directly use this patent without creative efforts.
Disclosure of Invention
The invention aims to provide a cylinder cover water jacket structure capable of improving the cold starting performance of an engine, which is simple in structure and can reasonably distribute two paths of flow of cooling liquid heated by a small circulation pipeline, so that more cooling liquid for heating an engine body flows into the engine body.
In order to solve the technical problem, the cylinder head water jacket structure capable of improving the cold starting performance of the engine comprises a cylinder head water jacket body, wherein a cylinder head water jacket water outlet cavity, an engine oil cooler water outlet hole and an engine body water outlet are formed in the cylinder head water jacket body, the engine oil cooler water outlet hole and the engine body water outlet are communicated with the cylinder head water jacket water outlet cavity, a buffer cavity is arranged between the cylinder head water jacket water outlet cavity and the engine oil cooler water outlet hole, one end of the buffer cavity is communicated with the cylinder head water jacket water outlet cavity, and the other end of the buffer cavity is communicated with the engine oil cooler water outlet hole.
In a preferred embodiment of the present invention, the buffer chamber is a first groove processed at the rear end face of the cylinder head water jacket body, the cylinder head water jacket water outlet chamber is a second groove processed at the rear end face of the cylinder head water jacket body, and the oil cooler water outlet is a through hole processed at the side end face of the cylinder head water jacket body, the through hole is communicated with the first groove, and the first groove is communicated with the second groove.
In a preferred embodiment of the present invention, an area where the through hole communicates with the first groove is smaller than a diameter of the through hole.
In a preferred embodiment of the present invention, the first groove and the second groove share a rib.
In a preferred embodiment of the present invention, the end face of the bead is spaced from the rear end face of the cylinder head water jacket body by a distance of 1mm to 3.5 mm.
In a preferred embodiment of the invention, the cylinder head water jacket body is formed by sand core die casting, and the cylinder head water jacket water outlet chamber is formed by metal die casting.
In a preferred embodiment of the present invention, a metal mold for molding the water outlet chamber of the cylinder head water jacket is provided with a convex portion for molding the cushion chamber and a concave portion for molding the rib.
In a preferred embodiment of the present invention, a central axis of the buffer chamber is arranged perpendicular to a central axis of the oil cooler water outlet hole.
In a preferred embodiment of the present invention, a central axis of the cushion chamber is arranged in parallel with a central axis of the cylinder head water jacket water outlet chamber.
The invention also discloses a small circulation structure of the cylinder cover water jacket structure, which comprises a water pump, a cylinder body water jacket, a cylinder cover water jacket and a cooling water channel, wherein the cylinder cover water jacket is a cylinder cover water jacket structure capable of improving the cold starting performance of an engine.
The invention has the beneficial effects that: the invention has simple structure and convenient use, and the buffer chamber is arranged between the water outlet chamber of the water jacket of the cylinder cover and the water outlet hole of the oil cooler, thereby reducing the passage area of the water outlet hole of the oil cooler on the cylinder cover, prolonging the circulation path to control the flow of the cooling liquid to the oil cooler, optimizing the flow ratio of the cooling liquid, increasing the flow of the small circulation passage, improving the warming-up speed of the engine and improving the cold starting performance of the engine under the condition of not increasing the circulation capacity of a water pump. The invention has simple structure and convenient implementation, and can effectively improve the warming speed of the engine.
Drawings
FIG. 1 is a shaft test chart of a cylinder head water jacket structure for improving engine cold start performance according to an embodiment of the present invention;
FIG. 2 is a side view of a cylinder head water jacket structure that improves engine cold start performance in accordance with an embodiment of the present invention;
FIG. 3 is a schematic coolant flow diagram of a cylinder head water jacket structure for improving engine cold start performance in accordance with an embodiment of the present invention;
in the figure: 1-cylinder cover water jacket body; 2-water outlet cover; 1-1-cylinder cover water jacket water outlet chamber; 1-2-convex ribs; 1-3-buffer chamber; 1-4-water outlet of the engine oil cooler; 1-5-the rear end face of the cylinder cover water jacket body; 1-6-water outlet of engine body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention discloses a cylinder cover water jacket structure capable of improving the cold starting performance of an engine, which comprises a cylinder cover water jacket body 1, wherein a cylinder cover water jacket water outlet chamber 1-1, an engine oil cooler water outlet 1-4 and an engine body water outlet 1-6 are processed on the cylinder cover water jacket body 1, the engine oil cooler water outlet 1-4 and the engine body water outlet 1-6 are communicated with the cylinder cover water jacket water outlet chamber 1-1, the engine oil cooler water outlet 1-4 and the engine body water outlet 1-6 are arranged in parallel, a buffer chamber 1-3 is arranged between the cylinder cover water jacket water outlet chamber 1-1 and the engine oil cooler water outlet 1-4, one end of the buffer chamber 1-3 is communicated with the cylinder cover water jacket water outlet chamber 1-1, one end of the buffer chamber 1-3 is communicated with the cylinder cover water outlet chamber 1-1, The other end is communicated with water outlet holes 1-4 of the engine oil cooler.
The buffering chamber 1-3 is a first groove cast at the rear end face of the cylinder cover water jacket body 1, the cylinder cover water jacket water outlet chamber 1-1 is a second groove cast at the rear end face of the cylinder cover water jacket body 1, a through hole is drilled in the side end face of the cylinder cover water jacket body 1 for an oil cooler water outlet hole 1-4, the through hole is communicated with the first groove, and the first groove is communicated with the second groove. The area of the communication part of the through hole and the first groove is smaller than the diameter of the through hole. The first groove and the second groove share one convex rib 1-2. The distance between the end face of the convex rib 1-2 and the rear end face of the cylinder cover water jacket body 1 is 1 mm-3.5 mm.
Preferably, the cylinder head water jacket body 1 is formed by sand core die casting, and the cylinder head water jacket water outlet chamber 1-1 is formed by metal die casting. The metal mould for molding the water outlet chamber 1-1 of the cylinder cover water jacket is provided with a convex part for molding the buffer chamber 1-3 and a concave part for molding the convex rib 1-2. The measures optimize the casting manufacturability of the water jacket.
Preferably, the central axis of the buffer chamber 1-3 is arranged perpendicular to the central axis of the oil cooler water outlet hole 1-4. The central axis of the buffer chamber 1-3 is arranged in parallel with the central axis of the cylinder head water jacket water outlet chamber 1-1.
The invention also discloses an engine cooling system, the small circulation structure of which comprises a water pump, a cylinder body water jacket, a cylinder cover water jacket and a cooling water channel, wherein the cylinder cover water jacket is the cylinder cover water jacket structure capable of improving the cold starting performance of the engine.
When the engine oil cooler is used, when the engine operates, the cooling liquid needs to bypass the convex ribs and enters the water outlet hole of the engine oil cooler on the cylinder cover through the water outlet rear cover, the flow of the cooling liquid to the engine oil cooler is controlled by reducing the channel area of the water outlet hole of the engine oil cooler on the cylinder cover and prolonging the circulation path, the flow ratio of the cooling liquid is optimized under the condition that the circulation capacity of a water pump is not increased, the flow of a small circulation channel is increased, the warming-up speed of the engine is improved, and the cold starting performance of the engine is improved. The invention has simple structure and convenient implementation, and can effectively improve the warm-up speed of the engine
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. A cylinder head water jacket structure capable of improving cold starting performance of an engine comprises a cylinder head water jacket body (1), wherein a cylinder head water jacket water outlet chamber (1-1), an engine oil cooler water outlet hole (1-4) and an engine body water outlet (1-6) are arranged on the cylinder head water jacket body (1), the engine oil cooler water outlet hole (1-4) and the engine body water outlet (1-6) are communicated with the cylinder head water jacket water outlet chamber (1-1), and the cylinder head water jacket structure is characterized in that: a buffer chamber (1-3) is arranged between the cylinder cover water jacket water outlet chamber (1-1) and the oil cooler water outlet hole (1-4), one end of the buffer chamber (1-3) is communicated with the cylinder cover water jacket water outlet chamber (1-1), and the other end of the buffer chamber is communicated with the oil cooler water outlet hole (1-4).
2. The cylinder head water jacket structure according to claim 1, wherein: the engine oil cooler comprises a cylinder head water jacket body (1), a buffer chamber (1-3), an engine oil cooler water outlet hole (1-4), a cylinder head water jacket water outlet chamber (1-1), a cylinder head water jacket body (1), a cylinder head water jacket body (1), and a cylinder head water jacket body (1).
3. The cylinder head water jacket structure according to claim 2, wherein: the area of the communication part of the through hole and the first groove is smaller than the diameter of the through hole.
4. The cylinder head water jacket structure according to claim 2, wherein: the first groove and the second groove share one convex rib (1-2).
5. The cylinder head water jacket structure according to claim 4, wherein: the distance between the end face of the convex rib (1-2) and the rear end face of the cylinder cover water jacket body (1) is 1-3.5 mm.
6. The cylinder head water jacket structure according to claim 1, wherein: the cylinder cover water jacket body (1) is formed by casting through a sand core die, and the cylinder cover water jacket water outlet cavity (1-1) is formed by casting through a metal die.
7. The cylinder head water jacket structure according to claim 1, wherein: the metal mold for molding the water outlet cavity (1-1) of the cylinder cover water jacket is provided with a convex part for molding the buffer cavity (1-3) and a concave part for molding the convex rib (1-2).
8. The cylinder head water jacket structure according to claim 1, wherein: the central axis of the buffer chamber (1-3) is perpendicular to the central axis of the oil cooler water outlet hole (1-4).
9. The cylinder head water jacket structure according to claim 1, wherein: the central axis of the buffer chamber (1-3) is arranged in parallel with the central axis of the cylinder cover water jacket outlet chamber (1-1).
10. The utility model provides an engine cooling system, its little circulating structure includes water pump, cylinder block water jacket, cylinder head water jacket and cooling water passageway, its characterized in that: the cylinder head water jacket is a cylinder head water jacket structure capable of improving the cold start performance of the engine as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394106.9A CN109630304B (en) | 2018-11-21 | 2018-11-21 | Cylinder head water jacket structure capable of improving cold starting performance of engine and engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394106.9A CN109630304B (en) | 2018-11-21 | 2018-11-21 | Cylinder head water jacket structure capable of improving cold starting performance of engine and engine cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630304A CN109630304A (en) | 2019-04-16 |
| CN109630304B true CN109630304B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811394106.9A Active CN109630304B (en) | 2018-11-21 | 2018-11-21 | Cylinder head water jacket structure capable of improving cold starting performance of engine and engine cooling system |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444469B1 (en) * | 2002-05-28 | 2004-08-16 | 현대자동차주식회사 | Engine structure for intensifying cooling function engine coolant |
| KR20080009557A (en) * | 2006-07-24 | 2008-01-29 | 쌍용자동차 주식회사 | Cylinder head for automobiles |
| CN201209472Y (en) * | 2008-06-13 | 2009-03-18 | 安徽江淮汽车股份有限公司 | Cooling system of gasoline engine |
| CN201606141U (en) * | 2010-03-08 | 2010-10-13 | 昆明云内动力股份有限公司 | Engine cooling system |
| CN205744173U (en) * | 2016-06-13 | 2016-11-30 | 丰田自动车株式会社 | Cylinder cap cooling structure |
| CN207847783U (en) * | 2018-01-26 | 2018-09-11 | 北京长源朗弘科技有限公司 | A kind of New water jacket structure cylinder cap |
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