CN210396908U - Cooling water jacket for engine cylinder cover - Google Patents
Cooling water jacket for engine cylinder cover Download PDFInfo
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- CN210396908U CN210396908U CN201921082888.2U CN201921082888U CN210396908U CN 210396908 U CN210396908 U CN 210396908U CN 201921082888 U CN201921082888 U CN 201921082888U CN 210396908 U CN210396908 U CN 210396908U
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- exhaust
- exhaust manifold
- water jacket
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Abstract
The utility model provides a cooling water jacket for engine cylinder lid belongs to the engine field. The cooling water jacket includes: the main body is arranged around the cylinder cover body, and a water outlet is formed in one longitudinal side of the main body; the lower sheet body is arranged on one side of the exhaust manifold, and comprises a branch pipe part which is similar to the exhaust manifold in shape and is internally provided with a channel and a connecting part, one side of the connecting part is communicated with the dispersed end parts of the branch pipe part, the other side of the connecting part is communicated with the main body, and the connecting part is provided with a plurality of water feeding ports; and the upper sheet body is arranged on the other side of the exhaust manifold, wraps at least part of the exhaust manifold, is in a hollow shape formed by a plurality of channels, and one end of the upper sheet body is communicated with the main body while the other end of the upper sheet body is communicated with the collection part of the branch pipe part. The utility model discloses a cooling jacket can improve the cooling effect, effectively cools off exhaust manifold, exhaust nose bridge district and spark plug mounting hole periphery to effectively discharge the bubble.
Description
Technical Field
The utility model relates to an engine field especially relates to a cooling jacket for engine cylinder lid.
Background
Automobile engines gradually develop towards light weight and miniaturization, and the overall structure of the engine is required to be compact and the space arrangement is reasonable. The cylinder cover integrated exhaust manifold has the advantages of simple and compact system structure, reduced parts and low cost, so that the cylinder cover exhaust integration technology is more and more applied to the design of the cylinder cover.
However, the requirement of the engine on high power, the heat load of the cylinder cover is continuously increased, the problem of failure caused by thermal fatigue is more prominent, how to ensure the heat dissipation capacity of the cylinder cover water jacket is very important, and the flowing and heat transfer conditions of the water jacket cooling water directly influence the service life and reliability of the cylinder cover.
The cylinder cover of the integrated exhaust manifold needs a cooling water jacket to cool the exhaust manifold structure, the existing cooling water jacket is often designed into a full-wrapped exhaust manifold structure, so that the cooling water jacket has large volume and low flow rate, a large amount of bubbles can be generated while absorbing a large amount of heat, the flow rate and the flow direction of the water jacket are influenced, and the cooling effect of the water jacket is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cooling jacket for engine cylinder lid can improve the cooling effect.
The utility model discloses a further purpose is to effectively cool off exhaust manifold, exhaust nose bridge district and spark plug mounting hole periphery.
The utility model discloses a further purpose in addition effectively discharges the bubble.
In particular, the utility model provides a cooling water jacket for an engine cylinder cover, the cylinder cover comprises a cylinder cover body and an exhaust manifold, the exhaust manifold comprises a plurality of exhaust passages, one end of each exhaust passage is collected into an exhaust port, each exhaust passage is dispersed from the exhaust port to the other end,
the cooling water jacket includes:
the main body is arranged around the cylinder cover body, and a water outlet is formed in one longitudinal side of the main body;
the lower sheet body is arranged on one side of the exhaust manifold, and comprises a branch pipe part which is similar to the exhaust manifold in shape and is internally provided with a channel and a connecting part, one side of the connecting part is communicated with the dispersed end parts of the branch pipe part, the other side of the connecting part is communicated with the main body, and the connecting part is provided with a plurality of water feeding ports; and
the upper sheet body is arranged on the other side of the exhaust manifold and wraps at least part of the exhaust manifold, is in a hollow shape formed by a plurality of channels, one end of the upper sheet body is communicated with the main body, and the other end of the upper sheet body is communicated with the collection part of the branch pipe part.
Optionally, the connecting portion includes:
and the first branch pipes are arranged between the dispersed ends of the two adjacent exhaust manifolds, one ends of the first branch pipes are provided with first water supply ports, and the other ends of the first branch pipes are communicated with the main body, so that the cooling liquid flowing in from the first water supply ports cools an exhaust nose bridge area between exhaust passages of the exhaust manifolds.
Optionally, the branch pipe portion comprises:
and the directions of the plurality of scattered second branch pipes are consistent with the directions of part of exhaust passages of the exhaust manifold, one end of each second branch pipe is gathered near an exhaust port of the exhaust manifold, and the other end of each second branch pipe is provided with a second water feeding port, so that cooling liquid flowing into the exhaust manifold from the second water feeding ports and flowing along the second branch pipes cools the exhaust manifold.
Optionally, the connecting portion further comprises:
one end of each third branch pipe is provided with a third water feeding port, and the other end of each third branch pipe is communicated with the channel in the main body; ends of the third branch pipe, the first branch pipe, the second branch pipe and the main body together define a portion around the end portion of the exhaust manifold; and is
The main part is including the first portion of wrapping around the spark plug mounting hole setting, its inside be equipped with the passageway and with the third branch pipe, first branch pipe, second branch pipe intercommunication to introduce the coolant cooling the tip that exhaust manifold disperses and the week portion of spark plug mounting hole.
Optionally, an end of the first wrapping portion opposite to the water outlet in the longitudinal direction is further provided with a fourth water feeding port for introducing cooling liquid to circulate along the longitudinal direction of the main body.
Optionally, the upper sheet includes:
the middle part of one side of the main through part and the branch pipe part jointly define a surrounding part surrounding the exhaust port of the exhaust manifold, and a main channel along the longitudinal direction of the main through part is arranged inside the main through part;
the fourth branch pipes are arranged on two sides of the surrounding part and are used for communicating the main channel with the branch pipe parts; and
and a plurality of fifth branch pipes for communicating the main passage and the main body.
Alternatively, the fifth branch pipe is arranged along a course of part of the exhaust passage of the exhaust manifold.
Optionally, the fourth branch, the fifth branch and the main channel converge at a point.
Optionally, the main body further comprises a second surrounding part arranged around the combustion chamber, a channel is arranged in the second surrounding part and communicated with the channel in the first surrounding part, and a first air outlet used for exhausting air is arranged between the adjacent combustion chambers in the second surrounding part.
Optionally, the main through part is provided with a second air outlet near the fourth branch pipe close to the water outlet.
The utility model discloses a cooling jacket's last lamellar body is the fretwork form that is formed by a plurality of passageways, lower lamellar body sets up to the shape similar with exhaust manifold, is the pipe connection form of fretwork overall, no longer is the full wrapping type water jacket among the prior art, has consequently reduced water jacketed volume, and water jacketed flow area reduces by a wide margin to the sectional area of passageway is little to be favorable to improving the velocity of flow of coolant liquid, thereby improves water jacketed cooling effect.
Furthermore, the water jacket covers the cylinder cover main body and the integrated exhaust manifold, so that the cylinder cover main body can be cooled, the stability of the periphery of the cylinder cover combustion chamber in a high-temperature working environment is ensured, and the detonation phenomenon is avoided; and the integrated exhaust manifold can be cooled, so that the influence of high-temperature combustion exhaust on the service life and the reliability of the cylinder cover is avoided. The exhaust nose bridge area is separately water-cooled and has the characteristic of high flow rate.
Furthermore, the cooling water jacket is provided with a degassing structure, so that bubbles generated by cold heat exchange in the flowing process of the water jacket cooling liquid are removed, and the flowing and heat transfer of the water jacket cooling water are improved; the area of a water jacket channel around exhaust is reduced under the condition of ensuring the heat dissipation of the exhaust manifold, the flow rate of cooling liquid is improved so as to enhance the heat exchange capability, and generated bubbles can be quickly brought to the periphery of a degassing port and discharged out of the water jacket.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is an assembly view of a cooling jacket and exhaust manifold according to one embodiment of the present invention;
fig. 2 is a front view of a lower blade side of a cooling water jacket according to an embodiment of the present invention;
fig. 3 is a schematic view of the flow direction of the coolant on the lower plate side of the cooling water jacket according to an embodiment of the present invention;
fig. 4 is a front view of an upper blade side of a cooling water jacket according to an embodiment of the present invention;
fig. 5 is a perspective view of a cooling water jacket according to an embodiment of the present invention;
fig. 6 is a schematic view of the flow direction of the coolant on the upper plate side of the cooling water jacket according to an embodiment of the present invention.
Detailed Description
Fig. 1 is an assembly view of a cooling water jacket 100 and an exhaust manifold 40 according to an embodiment of the present invention. The cooling water jacket 100 of the present invention can be applied to a supercharged and naturally aspirated engine, and is cooled by the cylinder head integrated with the exhaust manifold 40. As shown in fig. 1, the cylinder head includes a cylinder head body (not shown) and an exhaust manifold 40, and the exhaust manifold 40 includes a plurality of exhaust passages 41, all of the exhaust passages 41 having one end collected into an exhaust port 42, each exhaust passage 41 diverging from the exhaust port 42 toward the other end. As shown in fig. 1, in the present invention, a direction substantially along the direction of the exhaust passage 41 is referred to as a transverse direction (X in fig. 1), an arrangement direction of the exhaust passage 41 is referred to as a longitudinal direction (Y in fig. 1), the longitudinal direction of the cylinder head is referred to herein as a longitudinal direction, a longitudinal front end of the cylinder head is an upstream end (+ Y direction), and a longitudinal rear end thereof is a downstream end (Y direction) provided with a water outlet 101; the side corresponding laterally to the exhaust port 42 is the exhaust side (+ X direction) and the opposite side is the intake side (-X direction).
As shown in fig. 1, the present invention provides a cooling jacket 100 for the engine head described above, which may generally include a main body 10, a lower plate 20, and an upper plate 30. The main body 10 is arranged around the cylinder cover body and a water outlet 101 is arranged on one longitudinal side of the main body. The lower sheet body 20 is disposed at one side of the exhaust manifold 40, and includes a branch pipe portion having a similar shape to the exhaust manifold 40 and having a passage therein, and a connecting portion, one side of which is communicated with the end portion of the branch pipe portion, and the other side is communicated with the main body 10, and the connecting portion is provided with a plurality of water feeding ports 200. The upper sheet 30 is disposed on the other side of the exhaust manifold 40 and surrounds at least a portion of the exhaust manifold 40, and is hollow formed by a plurality of channels, one end of which is communicated with the main body 10, and the other end of which is communicated with a collection portion of the branch pipe portion.
The upper sheet body 30 of the cooling water jacket 100 of the embodiment is in a hollow shape formed by a plurality of channels, the lower sheet body 20 is set to be in a shape similar to the exhaust manifold 40, and the upper sheet body is in a hollow pipeline connection form as a whole and is not a full-wrapping type water jacket in the prior art, so that the volume of the water jacket is reduced, the flow area of the water jacket is greatly reduced, and the sectional area of the channels is small, which is beneficial to improving the flow rate of the cooling liquid, thereby improving the cooling effect of the water jacket.
Fig. 2 is a front view of the lower blade side of the cooling water jacket 100 according to an embodiment of the present invention. As shown in fig. 2, in one embodiment, the connecting portion includes a plurality of first branch pipes 21 disposed between the diverging ends of two adjacent exhaust manifolds 40, one end of which is provided with a first water supply port 201 and the other end of which communicates with the main body 10, so that the coolant flowing in from the first water supply port 201 cools the exhaust nose area between the exhaust passages 41 of the exhaust manifolds 40.
This embodiment is through setting up a plurality of first branch pipes 21 in the nose bridge district that exhausts to the water hole is gone up in the tip setting of first branch pipe 21, independently provide coolant liquid to first branch pipe 21 department, form the crossing current that flows in the nose bridge district that exhausts, water is given the nose bridge district that exhausts alone promptly, can have corresponding and high-efficient cooling to exhaust the nose bridge district, the temperature in effective control nose bridge district that exhausts, avoid too high temperature to lead to fatigue crack's production, be favorable to controlling the emergence of detonation and preignition simultaneously.
In another embodiment, as shown in fig. 2, the branch pipe portion comprises a plurality of second branch pipes 22 distributed in a direction corresponding to the direction of the exhaust passage 41 of the partial exhaust manifold 40, one end of each second branch pipe 22 is gathered near the exhaust port 42 of the exhaust manifold 40, and the other end is provided with a second water filling port 202, so that the cooling liquid flowing from the second water filling port 202 and along the second branch pipes 22 cools the exhaust manifold 40.
In the present embodiment, the plurality of second branch pipes 22 of the branch pipe portion are arranged to be aligned with the exhaust passages 41 of the exhaust manifold 40, and the separate second water feeding ports 202 are provided, so that the exhaust manifold 40 can be cooled better.
In the embodiment shown in fig. 1, which is directed to a 4-cylinder engine, the exhaust manifold 40 includes a 1-cylinder exhaust passage 401, a 2-cylinder exhaust passage 402, a 3-cylinder exhaust passage 403 and a 4-cylinder exhaust passage 404, and the coolant enters from the second water inlets 202 corresponding to the lower sides of the 1-cylinder exhaust passage 401 and the 2-cylinder exhaust passage 402, flows through the corresponding second branch pipes 22 and is collected to the vicinity of the exhaust port 42, and cools the peripheries of the 1-cylinder exhaust passage 401, the 2-cylinder exhaust passage 402 and the exhaust port 42. And then branched to the second branch pipes 22 corresponding to the lower sides of the 3-cylinder exhaust ducts 403 and the 4-cylinder exhaust ducts 404, cooling the 3-cylinder exhaust ducts 403 and the 4-cylinder exhaust ducts 404. The cross flow mode of the above process effectively cools the exhaust manifold 40, and the longitudinal flow mode effectively cools the exhaust ports 42.
Fig. 3 is a schematic view of the flow of the coolant on the lower plate side of the cooling water jacket 100 according to an embodiment of the present invention, and the arrows in the figure indicate the flow direction of the coolant. As shown in fig. 2, in one embodiment, the connecting portion further includes a plurality of third branch pipes 23, one end of which is provided with a third water supply port 203 and the other end of which communicates with the passage in the main body 10. The ends of the third branch pipe 23, the first branch pipe 21, and the second branch pipe 22 cooperate with the main body 10 to define portions around the ends diverging from the exhaust manifold 40. And the main body 10 includes a first surrounding portion 11 provided around the spark plug mounting hole 50, provided with a passage therein and communicating with the third branch pipe 23, the first branch pipe 21, the second branch pipe 22 to introduce the end portion where the cooling liquid cools the exhaust manifold 40 and the peripheral portion of the spark plug mounting hole 50 (see fig. 3).
As shown in fig. 3, in the present embodiment, the periphery of the spark plug mounting hole 50 of each cylinder is cooled by the above-described cross flow pattern from the exhaust side to the intake side, and the end portion of the exhaust manifold 40 is also cooled, so that the temperature around the spark plug mounting hole 50 can be effectively controlled, the occurrence of fatigue cracks due to an excessively high temperature is avoided, and the occurrence of knocking and pre-ignition is favorably controlled.
In another embodiment, as shown in fig. 2, the first wrapping portion 11 is further provided with a fourth water inlet 102 at an end opposite to the water outlet 101 in the longitudinal direction for introducing the cooling liquid to circulate along the longitudinal direction of the main body 10. In the embodiment shown in fig. 2, the main body 10 is provided with two fourth water feed ports 102 at the upstream in the longitudinal direction, so that the cooling liquid flowing in from the fourth water feed ports 102 flows along the longitudinal channel of the main body 10 (see fig. 3), i.e. the longitudinal flow mode, thereby achieving the cooling of the cylinder head body portion, and the maximization of the cooling capacity of the cooling water jacket 100 is exerted in combination with the aforementioned cross flow mode.
Fig. 4 is a front view of the upper blade side of the cooling water jacket 100 according to an embodiment of the present invention. Fig. 5 is a perspective view of the cooling water jacket 100 according to an embodiment of the present invention. As shown in fig. 4, in one embodiment, the upper sheet 30 includes a main portion 31, a plurality of fourth branch pipes 32, and a plurality of fifth branch pipes 33. As shown in fig. 5, the central portion of one side of the main through portion 31 and the branch pipe portions together define a surrounding portion 311 surrounding the exhaust port 42 of the exhaust manifold 40, and the inside of the main through portion 31 is provided with a main passage along the longitudinal direction thereof. A plurality of fourth branch pipes 32 are provided at both sides of the enclosure portion 311 for communicating the main passage and the branch pipe portions. A plurality of fifth branch pipes 33 are used to communicate the main passage and the main body 10.
Fig. 6 is a schematic diagram of the flow direction of the coolant on the upper plate side of the cooling water jacket 100 according to an embodiment of the present invention, and the arrow direction in the drawing indicates the flow direction of the coolant. As shown in fig. 6, the coolant in the main body 10 flows into the main passage through the upstream fifth branch pipe 33, and the coolant in the branch pipe portion of the lower portion flows into the main passage through the fourth branch pipe 32 to join with the coolant flowing in the fifth branch pipe 33, flows along the main passage portion 31 to form a longitudinal flow, and finally flows back to the main body 10 through the downstream fifth branch pipe 33, thereby completing the flow of the coolant.
In one embodiment, the fifth branch pipe 33 is arranged along the course of the exhaust passage 41 of a part of the exhaust manifold 40. In the embodiment shown in FIG. 4, two fifth branches 33 are provided near the 1-cylinder exhaust passage 401 and near the 4-cylinder exhaust passage 404, respectively, and the fifth branches 33 cool the upper side of the 1-cylinder exhaust passage 41 by the cooling liquid of the main body 10, flow through the upper side of the 3-cylinder exhaust passage 403, the upper side of the 3-cylinder exhaust passage 403 and the periphery of the exhaust port 42, and flow to the other fifth branch 33 to cool the upper side of the 4-cylinder exhaust passage 404.
Alternatively, as shown in fig. 4, the fourth branch pipe 32, the fifth branch pipe 33 and the main channel converge at a point, and the collected cooling liquid is favorable for increasing the flow speed and enhancing the cooling effect.
In another embodiment, as shown in fig. 2, the body 10 further comprises a second surrounding portion 12 disposed around the combustion chambers 60, having passages formed therein and communicating with the passages in the first surrounding portion 11, the second surrounding portion 12 being provided with first outlet ports 121 for exhaust gas between the adjacent combustion chambers 60.
As shown in fig. 3, the air bubbles partially generated in the body 10 flow from the exhaust nose bridge region and the periphery of the plug mounting hole 50 to the first air outlet 121 with longitudinal flow, and are discharged out of the cooling water jacket 100. The air bubbles flow from the front end to the rear end of the cylinder head body along with the lateral flow, and are discharged out of the water jacket through the first air outlet 121.
In one embodiment, as shown in fig. 5, the main portion 31 is further provided with a second air outlet 312 near the fourth branch pipe 32 near the water outlet 101. The cooling liquid flowing at high speed in the main through portion 31 of the upper sheet portion carries the bubbles to the second air outlet 312 for discharge. The air bubbles in the lower part follow the cooling liquid to enter the fourth branch pipe 32 from the upstream second branch pipe 22 and are collected to the second air outlet 312 to be discharged out of the water jacket.
The coolant flowing in the body 10 of the water jacket and also in the exhaust portion of the water jacket always generates a large number of bubbles in the corner, slow flow rate region. If the generated bubbles are not exhausted from the water jacket in time, the bubbles are accumulated more and more in the flowing process of the cooling liquid, the flow speed of the water jacket is reduced, the flow direction of the water jacket is changed, and the cooling effect of the water jacket is reduced.
The air bubbles generated by the cooling water jacket 100 are discharged from the plurality of first air outlets 121 and the second air outlet 312 disposed at the highest point along with the transverse flow and the longitudinal flow, so that the flow and the heat transfer of the cooling water of the water jacket can be improved, and the cooling effect is further improved.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A cooling water jacket for an engine cylinder head, the cylinder head including a cylinder head body and an exhaust manifold, the exhaust manifold including a plurality of exhaust passages, all of the exhaust passages having one end converging into an exhaust port, each exhaust passage diverging from the exhaust port to the other end, the cooling water jacket comprising:
the main body is arranged around the cylinder cover body, and a water outlet is formed in one longitudinal side of the main body;
the lower sheet body is arranged on one side of the exhaust manifold, and comprises a branch pipe part which is similar to the exhaust manifold in shape and is internally provided with a channel and a connecting part, one side of the connecting part is communicated with the dispersed end parts of the branch pipe part, the other side of the connecting part is communicated with the main body, and the connecting part is provided with a plurality of water feeding ports; and
the upper sheet body is arranged on the other side of the exhaust manifold and wraps at least part of the exhaust manifold, is in a hollow shape formed by a plurality of channels, one end of the upper sheet body is communicated with the main body, and the other end of the upper sheet body is communicated with the collection part of the branch pipe part.
2. The cooling water jacket according to claim 1, wherein the connecting portion includes:
and the first branch pipes are arranged between the dispersed ends of the two adjacent exhaust manifolds, one ends of the first branch pipes are provided with first water supply ports, and the other ends of the first branch pipes are communicated with the main body, so that the cooling liquid flowing in from the first water supply ports cools an exhaust nose bridge area between exhaust passages of the exhaust manifolds.
3. The cooling water jacket according to claim 2, wherein the branch pipe portion includes:
and the directions of the plurality of scattered second branch pipes are consistent with the directions of part of exhaust passages of the exhaust manifold, one end of each second branch pipe is gathered near an exhaust port of the exhaust manifold, and the other end of each second branch pipe is provided with a second water feeding port, so that cooling liquid flowing into the exhaust manifold from the second water feeding ports and flowing along the second branch pipes cools the exhaust manifold.
4. The cooling water jacket according to claim 3, wherein the connecting portion further comprises:
one end of each third branch pipe is provided with a third water feeding port, and the other end of each third branch pipe is communicated with the channel in the main body; ends of the third branch pipe, the first branch pipe, the second branch pipe and the main body together define a portion around the end portion of the exhaust manifold; and is
The main part is including the first portion of wrapping around the spark plug mounting hole setting, its inside be equipped with the passageway and with the third branch pipe, first branch pipe, second branch pipe intercommunication to introduce the coolant cooling the tip that exhaust manifold disperses and the week portion of spark plug mounting hole.
5. The cooling water jacket according to claim 4,
and a fourth water feeding port is further formed in one end, opposite to the water outlet, of the first wrapping part in the longitudinal direction and used for introducing cooling liquid to circulate along the longitudinal direction of the main body.
6. The cooling water jacket according to claim 4, wherein the upper sheet body includes:
the middle part of one side of the main through part and the branch pipe part jointly define a surrounding part surrounding the exhaust port of the exhaust manifold, and a main channel along the longitudinal direction of the main through part is arranged inside the main through part;
the fourth branch pipes are arranged on two sides of the surrounding part and are used for communicating the main channel with the branch pipe parts; and
and a plurality of fifth branch pipes for communicating the main passage and the main body.
7. The cooling water jacket according to claim 6,
the fifth branch pipe is arranged along the direction of part of the exhaust passage of the exhaust manifold.
8. The cooling water jacket according to claim 7,
the fourth branch pipe, the fifth branch pipe and the main channel converge at one point.
9. The cooling water jacket according to any one of claims 6 to 8,
the main part still includes the second portion of encircleing that sets up around the combustion chamber, its inside be equipped with the passageway and with passageway intercommunication in the first portion of encircleing, second portion of encircleing is equipped with the first gas outlet that is used for carminative between adjacent combustion chamber.
10. The cooling water jacket according to claim 9,
and a second air outlet is formed in the main through part near the fourth branch pipe close to the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082888.2U CN210396908U (en) | 2019-07-11 | 2019-07-11 | Cooling water jacket for engine cylinder cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082888.2U CN210396908U (en) | 2019-07-11 | 2019-07-11 | Cooling water jacket for engine cylinder cover |
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| CN210396908U true CN210396908U (en) | 2020-04-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852682A (en) * | 2020-06-04 | 2020-10-30 | 浙江义利汽车零部件有限公司 | Engine cooling water jacket system, engine cooling method and vehicle |
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2019
- 2019-07-11 CN CN201921082888.2U patent/CN210396908U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852682A (en) * | 2020-06-04 | 2020-10-30 | 浙江义利汽车零部件有限公司 | Engine cooling water jacket system, engine cooling method and vehicle |
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