CN215927583U

CN215927583U - Water channel structure of cylinder head of motorcycle engine

Info

Publication number: CN215927583U
Application number: CN202121592708.2U
Authority: CN
Inventors: 成庆林
Original assignee: Chongqing Shunyouxiang Technology Co ltd
Current assignee: Chongqing Shunyouxiang Technology Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-03-01
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to the field of motorcycle engines, in particular to a cylinder head water channel structure of a motorcycle engine; the cylinder head comprises a cylinder head body, wherein a combustion chamber, a spark plug, an air inlet channel and an air exhaust channel are arranged in the cylinder head body, an inner water channel and an outer water channel through which water or cooling liquid passes are arranged in the cylinder head body, a plurality of separation ribs are arranged between the inner water channel and the outer water channel, the separation ribs are used for enabling water or cooling liquid of the inner water channel to flow into the outer water channel according to a demand mode, the inner water channel radially wraps the combustion chamber and the spark plug, the outer water channel forms a water cavity by the separation ribs and the outer shape wall of the cylinder head body, and the outer water channel radially wraps the combustion chamber, the spark plug, the air inlet channel and the air exhaust channel. The utility model aims to provide a water channel structure of a cylinder head of a motorcycle engine, which solves the problems of poor heat dissipation effect and low safety of the existing cylinder head of the engine.

Description

Water channel structure of cylinder head of motorcycle engine

Technical Field

The utility model relates to the field of motorcycle engines, in particular to a cylinder head water channel structure of a motorcycle engine.

Background

The engine is used as a heat-work machine, and a piston chamber in the cylinder block of the engine inevitably generates a large amount of heat energy during operation because of the high-speed reciprocating motion of the piston. The heat energy is accumulated in the cylinder block, and the physical properties of the cylinder block are very adversely affected. For an engine, the heat dissipation area is small, the heat load of the engine is high, the physical performance of the cylinder block is reduced, the temperature of engine oil is overhigh, and therefore, the engine cylinder block has more negative effects on various kinematic pairs, and the safety of the engine cylinder block is reduced.

Therefore, the cylinder head water channel structure of the motorcycle engine is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water channel structure of a cylinder head of a motorcycle engine, which solves the problems of poor heat dissipation effect and low safety of the existing cylinder head of the engine.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a water channel structure of a cylinder head of a motorcycle engine comprises a cylinder head body, wherein a combustion chamber, a spark plug, an air inlet channel and an air outlet channel are arranged in the cylinder head body, the air inlet channel and the air outlet channel are arranged above the combustion chamber, the spark plug is arranged above the air inlet channel and the air outlet channel, an inner water channel and an outer water channel through which water or cooling liquid passes are arranged in the cylinder head body, a plurality of partition ribs are arranged between the inner water channel and the outer water channel and used for enabling the water or the cooling liquid of the inner water channel to flow into the outer water channel in a required mode, a plurality of water inlet holes penetrating through the top of the cylinder head body are formed in the top of the inner water channel, a circular groove formed by the water inlet holes and a water cavity formed by the partition ribs are formed in the inner water channel, the combustion chamber and the spark plug are radially wrapped in the inner water channel, the outer water channel forms a water cavity by the partition ribs and the outer wall of the cylinder head body, and the outer water channel radially wraps the combustion chamber, Spark plug, intake duct and exhaust duct.

Specifically, the outer side surface of the cylinder head body is provided with a cooling fin.

Specifically, the side surface of the cylinder head body is provided with a water outlet hole communicated with the outer water channel.

Specifically, the number of the water inlet holes is six, and each water inlet hole is uniformly distributed at the top of the inner water channel.

Specifically, the top and the side of the cylinder head body are respectively provided with three sand core exhaust holes.

The utility model has the beneficial effects that: according to the utility model, the inner water channel and the outer water channel are arranged, the serial-type circulating structure is formed between the inner water channel and the outer water channel, and the use of the partition ribs is matched, so that the water or the cooling liquid of the inner water channel can be ensured to effectively flow into the outer water channel as required, the water or the cooling liquid of the inner water channel and the outer water channel is fully contacted with the high-heating part in the cylinder head body, then the high-heat water is taken away from the cylinder head body through water circulation, and the integral temperature of the cylinder head body is greatly reduced; through the arrangement of the radiating fins, the low-heating part in the cylinder head body is heated after water flow circulation, and the whole temperature of the cylinder head body can be further reduced through heat exchange and radiation with the external environment.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view showing the direction of water flow in the inner water passage and the outer water passage in the cylinder surface according to the embodiment of the present invention;

FIG. 3 is a schematic structural view showing the directions of water flows in the inner water passage and the outer water passage in the cylinder head according to the embodiment of the present invention;

FIG. 4 is a schematic view of the outer side of the cylinder head body according to the embodiment of the present invention;

FIG. 5 is a schematic structural view of a sand core vent hole in the cylinder face according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a sand core vent hole in the cylinder head according to the embodiment of the utility model.

Reference numerals: the cylinder head comprises a cylinder head body 1, a combustion chamber 2, a spark plug 3, an air inlet channel 4, an exhaust channel 5, a water inlet hole 6, a water outlet hole 7, an inner water channel 8, an outer water channel 9, a cylinder surface 10, a cylinder cover 11, a cooling fin 12 and a sand core exhaust hole 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to attached

drawings

1 and 4, a water channel structure of a cylinder head of a motorcycle engine comprises a cylinder head body 1, a combustion chamber 2, a spark plug 3, an air inlet channel 4 and an air outlet channel 5 are arranged in the cylinder head body 1, the air inlet channel 4 and the air outlet channel 5 are arranged above the combustion chamber 2, the spark plug 3 is arranged above the air inlet channel 4 and the air outlet channel 5, an inner water channel 8 and an outer water channel 9 for water or cooling liquid to pass through are arranged in the cylinder head body 1, a plurality of partition ribs are arranged between the inner water channel 8 and the outer water channel 9 and used for enabling the water or cooling liquid of the inner water channel 8 to flow into the outer water channel 9 according to a required mode, a plurality of water inlet holes 6 penetrating through the top of the cylinder head body 1 are arranged at the top of the inner water channel 8, a water cavity is formed by the inner water channel 8 through a circular groove and the partition ribs formed by the water inlet holes 6, and the inner water channel 8 radially wraps the combustion chamber 2 and the spark plug 3, the outer water channel 9 forms a water cavity by a partition rib and the outer wall of the cylinder head body 1, and the outer water channel 9 radially wraps the combustion chamber 2, the spark plug 3, the air inlet channel 4 and the air outlet channel 5; according to the utility model, the inner water channel 8 and the outer water channel 9 are arranged, the serial-type circulating structure is formed between the inner water channel 8 and the outer water channel 9, and the use of the spacer ribs is matched, so that the water or the cooling liquid of the inner water channel 8 can effectively flow into the outer water channel 9 as required, the water or the cooling liquid of the inner water channel 8 and the outer water channel 9 is fully contacted with a high-heating part in the cylinder head body 1, then the high-heat water is separated from the cylinder head body 1 through water circulation, and the integral temperature of the cylinder head body 1 is greatly reduced; by providing the heat radiating fins 12, the low-heat generating part of the cylinder head body 1 is heated after water circulation, and the entire temperature of the cylinder head body 1 can be further reduced by heat exchange with the external environment.

Furthermore, a serial circulation structure is formed between the inner water channel 8 and the outer water channel 9 according to the present invention, the outer water channel 9 has a large volume and surrounds each heat dissipation or heat release part (e.g., the combustion chamber 2, the spark plug 3, the intake channel 4, and the exhaust channel 5) of the cylinder head body 1, and in addition, the water or the coolant can flow in a desired direction (the flow rate per unit time in the exhaust direction is larger than the flow rate per unit time in the intake direction) by using the partition ribs, the water or the coolant of the inner water channel 8 and the outer water channel 9 can be in contact with the high heat generation part of the cylinder head body 1, and then the water circulation brings the high heat water away from the cylinder head body 1, so that the overall temperature of the cylinder head body 1 is greatly reduced.

Specifically, the outer side surface of the cylinder head body 1 is provided with a cooling fin 12; by providing the fins 12, the low-heat-generating portions in the cylinder head body 1 (for example, the fins 12, the cover surface of the cylinder head body 1, the outer side wall of the cylinder head body 1, or the like, which are away from the high-heat-generating portions in the cylinder head body 1) are heated by the circulation of water flow, and the entire temperature of the cylinder head body 1 can be further reduced by heat exchange with the external environment.

Further, the inner water channel 8, the outer water channel 9 and the radiating fins 12 according to the present invention can perform cooling processing from the inside and the outside of the cylinder head body 1 at the same time, and can effectively improve engine performance, and improve heat radiation effect and safety performance.

Specifically, the side surface of the cylinder head body 1 is provided with a water outlet hole 7 communicated with an outer water channel 9.

Specifically, the number of the water inlet holes 6 is six, and each water inlet hole 6 is uniformly distributed at the top of the inner water channel 8.

Furthermore, the utility model reduces the cooling of the air inlet channel 4 as much as possible under the condition that the whole cylinder head body 1 is cooled, thereby improving the heat energy utilization and increasing the engine efficiency.

Specifically, referring to fig. 5 and 6, the top and the side of the cylinder head body 1 are respectively provided with three sand core exhaust holes 13.

Furthermore, the integral device related by the utility model has the advantages that as the volume of the water channel sand core is large, the gas amount of the adhesive used by the sand core and the precoated sand is large at high temperature, and if the gas cannot be discharged in time in the process of forming the blank of the water channel sand core, the redundant gas can randomly flee around the inside of the cylinder head body 1 before the blank is formed, so that the defects of material shortage, gas holes, shrinkage cavities and the like exist in the blank forming process, and the qualified rate of the blank is greatly reduced; therefore, the water channel sand core in the cylinder head body 1 related by the utility model is additionally provided with the sand core exhaust holes 13, and besides the function holes of the water inlet holes 6 and the water outlet holes 7 of the cylinder head body 1 for exhausting, the top and the side surfaces of the cylinder head body 1 are respectively additionally provided with three sand core exhaust holes 13.

Further, the water channel sand core in the cylinder head body 1 according to the present invention is provided with a hollow structure, and the object is to reduce gas generation and reduce the volume of the sand core.

Furthermore, the number of the ejector rods of the outer die is increased on the die bottom die of the die during the molding of the water channel sand core, and an exhaust channel can be increased to a certain extent, so that the occurrence of blow-by is reduced.

Further, the cylinder head body 1 of the present invention includes a cylinder surface 10 and a cylinder head 11, and the cylinder surface 10 and the cylinder head 11 are sealed by cold glue.

Further, referring to fig. 2, the present invention relates to the direction of water flow in the inner water passage 8 and the outer water passage 9 of the cylinder surface 10.

Further, referring to fig. 3, the present invention relates to the direction of water flow in the inner water passage 8 and the outer water passage 9 of the cylinder head 11.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A water channel structure of a cylinder head of a motorcycle engine comprises a cylinder head body, wherein a combustion chamber, a spark plug, an air inlet channel and an air outlet channel are arranged in the cylinder head body, the air inlet channel and the air outlet channel are arranged above the combustion chamber, the spark plug is arranged above the air inlet channel and the air outlet channel, the water channel structure is characterized in that an inner water channel and an outer water channel for water or cooling liquid to pass through are arranged in the cylinder head body, a plurality of partition ribs are arranged between the inner water channel and the outer water channel, the partition ribs are used for enabling water or cooling liquid of the inner water channel to flow into the outer water channel according to a required mode, a plurality of water inlet holes penetrating through the top of the cylinder head body are arranged at the top of the inner water channel, the inner water channel forms a water cavity by a circular groove formed by the water inlet holes and the partition ribs, the combustion chamber and the spark plug are radially wrapped by the inner water channel, and the outer water channel forms a water cavity by the partition ribs and the outer wall of the cylinder head body, the outer water channel radially wraps the combustion chamber, the spark plug, the air inlet channel and the exhaust channel.

2. A cylinder head waterway structure of a motorcycle engine as recited in claim 1, wherein a fin is provided on an outer side surface of said cylinder head body.

3. The cylinder head water channel structure of the motorcycle engine as claimed in claim 1, wherein a side surface of the cylinder head body is provided with a water outlet hole communicated with the water channel.

4. The cylinder head waterway structure of a motorcycle engine as recited in claim 1, wherein the number of the water inlet holes is six, and each of the water inlet holes is uniformly distributed at a top of the inner waterway.

5. The cylinder head waterway structure of a motorcycle engine as recited in claim 1, wherein the top and the side of said cylinder head body are respectively provided with three sand core exhaust holes.