CN109441609B - Piston cooling injection system - Google Patents
Piston cooling injection system Download PDFInfo
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- CN109441609B CN109441609B CN201811554849.8A CN201811554849A CN109441609B CN 109441609 B CN109441609 B CN 109441609B CN 201811554849 A CN201811554849 A CN 201811554849A CN 109441609 B CN109441609 B CN 109441609B
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- oil
- oil duct
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- injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P2003/006—Liquid cooling the liquid being oil
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a piston cooling injection system, which comprises a main oil duct, an auxiliary oil duct, a first control oil duct, a second control oil duct, a converging oil duct, an oil injection mechanism, a thermosensitive control mechanism, a first connecting oil duct, a second connecting oil duct and an auxiliary oil duct connecting oil duct, wherein the main oil duct is connected with the auxiliary oil duct; the main oil duct is communicated with the first control oil duct through a first connecting oil duct; the main oil duct is communicated with a second control oil duct through a second connecting oil duct; the second control oil passage and the first control oil passage are both communicated with the converging oil passage; the converging oil passage is communicated to the auxiliary oil passage; the oil injection mechanism is communicated with the auxiliary oil duct, and the thermosensitive control mechanism is respectively arranged in the first control oil duct and the second control oil duct. The invention is provided with two thermosensitive control mechanisms which are respectively fixed in the first control oil duct and the second control oil duct and are arranged in parallel in the oil passage. When one path of the oil liquid is failed to open the oil liquid channel, the other path of the oil liquid channel is standby to ensure the safe and reliable cooling of the piston.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a piston cooling injection system.
Background
With the technical trend of supercharging miniaturization, the specific power of the automobile engine is increased, and the heat load of the combustion chamber is increased. Therefore, forced injection cooling of pistons in engines has become a standard solution.
But the cooling capacity of the piston must neither be insufficient nor excessive. Insufficient cooling can lead to piston head burn and detonation; excessive cooling will in turn lose thermal efficiency and reduce the viscosity of the lubricating oil thereby increasing friction losses. The ideal piston cooling injection system should be properly cooled in time according to the requirement, and has high reliability and cost performance.
The most common technical scheme at present is based on pressure control, a pressure control valve is arranged in front of a cooling nozzle, when the oil pressure rises to a certain value, the oil pressure overcomes the spring pressure in the pressure control valve, and therefore a channel leading to the cooling nozzle is opened to realize oil injection cooling of a piston. The oil pressure is established by an oil pump, which is strongly related only to the rotational speed of the oil pump, i.e. only to the rotational speed of the engine. However, under some conditions, the engine speed is high, and the oil pressure is sufficient to overcome the spring pressure to achieve injection, but there may be a relatively small load. In this case, the heat load on the piston is not so large that it is not necessary to cool the piston. In this case, the piston cooling injection system based on pressure control may result in excessive cooling of the piston, sacrificing thermal efficiency and economy. The oil pressure scheme cannot properly spray and cool the piston in time.
Disclosure of Invention
The invention aims to provide a piston cooling injection system, which can solve the defects in the prior art and can properly perform injection cooling on a piston in time.
The invention provides a piston cooling injection system, which comprises a main oil duct, an auxiliary oil duct, a first control oil duct, a second control oil duct, a converging oil duct, an oil injection mechanism, a thermosensitive control mechanism, a first connecting oil duct, a second connecting oil duct and an auxiliary oil duct connecting oil duct, wherein the main oil duct is connected with the auxiliary oil duct;
the main oil duct is communicated with the first control oil duct through a first connecting oil duct; the main oil duct is communicated with the second control oil duct through a second connecting oil duct; the second control oil passage and the first control oil passage are both communicated with the converging oil passage; the confluence oil passage is communicated to the auxiliary oil passage through the auxiliary oil passage connecting oil passage; the oil injection mechanism is arranged to be communicated with the auxiliary oil duct so as to inject oil to cool the piston in the cylinder body;
the number of the thermosensitive control mechanisms is two, and the two thermosensitive control mechanisms are respectively arranged in the first control oil duct and the second control oil duct to control the connection and disconnection between the second control oil duct and the converging oil duct or the connection and disconnection between the first control oil duct and the converging oil duct.
The piston cooling injection system as described above, wherein optionally, the thermally sensitive control mechanism comprises a valve seat, a bracket, a push rod, a sensor assembly, a valve closure member, a reset member, and a push rod top plate;
the valve seat is arranged in the first control oil duct and divides the first control oil duct into an upper control oil duct and a lower control oil duct; a valve seat through hole is formed in the valve seat and is communicated with the upper control oil duct and the lower control oil duct;
the support is fixed on the valve seat, the push rod top plate is fixed on the valve seat, and the push rod top plate and the support are oppositely arranged on two sides of the valve seat;
the sensor assembly is connected with the push rod through a rubber tube, and the rubber tube is wrapped on the outer side of the push rod.
The piston cooling injection system as described above, wherein optionally the return element is a return spring, a first end of the return spring abuts against the valve closing member, and a second end of the return spring abuts against the bracket.
The piston cooling injection system as described above, wherein optionally the thermo-responsive control mechanism further comprises a penetration hole provided for communicating the upper control oil passage and the lower control oil passage;
and a penetrating oil outlet is formed in the side wall of the lower control oil duct and used for discharging oil penetrating through the penetrating holes.
The piston cooling injection system as described above, wherein, optionally, the penetration hole is a kidney-shaped hole, the length of the kidney-shaped hole is 3mm, and the width of the kidney-shaped hole is 1.5 mm; the aperture of the penetrating oil outlet is 2 mm.
The piston cooling injection system comprises an injection body, a nozzle, a positioning sheet, a perforated bolt, an oil injection valve core, an oil injection spring and a limiting block, wherein the injection mechanism comprises a piston body, a nozzle, a positioning sheet, a perforated bolt, an oil injection valve core, an oil injection spring and a limiting block;
the spraying body is fixed on the cylinder body through the positioning piece, the perforation bolt is fixed on the spraying body, a first perforation and a second perforation are arranged on the perforation bolt, and the first perforation is vertically intersected with the second perforation.
The first end of the first through hole is communicated with an oil injection channel, and the oil injection channel is communicated with the auxiliary oil duct; the nozzle is provided with a nozzle channel, the first through hole is communicated with a second through hole, and the second through hole is communicated with the nozzle channel;
the oil injection valve core is movably arranged in the first through hole to plug or open a connecting channel between the first through hole and the second through hole;
the first end of the oil injection spring is abutted to the oil injection valve core, and the second end of the oil injection spring is abutted to the limiting block.
The piston cooling injection system as described above, wherein, optionally, a plurality of the oil injection mechanisms are provided, and the plurality of the oil injection mechanisms are in one-to-one correspondence with the positions of the corresponding engine cylinder holes.
Compared with the prior art, the oil-liquid separator is provided with two thermosensitive control mechanisms which are respectively fixed in the first control oil duct and the second control oil duct and are arranged in parallel in the oil-liquid passage. When one path of the oil liquid is failed to open the oil liquid channel, the other path of the oil liquid channel is standby to ensure the safe and reliable cooling of the piston.
The invention can ensure the real transmission of the temperature of the oil liquid in time by arranging the penetration hole and the penetration oil outlet, and continuously preheat the heat-sensitive control mechanism, so that the valve of the heat-sensitive control mechanism can be opened in time when the temperature reaches the oil liquid temperature control line;
the invention adopts the thermosensitive control mechanism to realize the temperature control, adopts the oil injection mechanism to realize the pressure control, and realizes the timely injection cooling of the piston in the area above the oil pressure control line and above the oil temperature control line through the double control based on the pressure and the temperature, thereby not only ensuring the operation reliability of the piston kinematic pair, but also not causing excessive cooling, and being capable of properly injecting and cooling the piston. The temperature of the lubricating oil is improved, so that the friction loss is reduced, the temperature of the combustion chamber is improved, the heat efficiency is improved, the consumption of the lubricating oil is reduced, and the emission is facilitated.
Drawings
FIG. 1 is a front view of a piston-cooled injection system provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken in the direction D-D of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 6 is an enlarged view of a portion of FIG. 2;
FIG. 7 is an enlarged view of a portion of FIG. 4;
FIG. 8 is a schematic structural diagram of a thermal sensitive control mechanism in a piston cooling injection system according to an embodiment of the present invention;
FIG. 9 is a top view of a thermal sensitive control mechanism in a piston-cooled spray system provided by an embodiment of the present invention;
description of reference numerals: 1-main oil gallery, 2-auxiliary oil gallery, 3-first control oil gallery, 31-upper control oil gallery, 32-lower control oil gallery, 33-penetrating oil outlet, 4-second control oil gallery, 5-confluent oil gallery, 6-oil injection mechanism, 61-spray body, 62-nozzle, 63-positioning plate, 631-nozzle through hole, 64-through hole bolt, 65-nozzle valve core, 66-nozzle spring, 67-limit hole, 7-thermosensitive control mechanism, 71-valve seat, 711-valve seat through hole, 72-bracket, 73-push rod, 74-sensor assembly, 75-valve closing member, 76-reset member, 77-push rod top plate, 78-penetrating hole, 8-first connecting oil gallery, 9-second connecting oil gallery, and 10-auxiliary oil passages are connected with the oil passages.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The embodiment of the invention comprises the following steps: as shown in fig. 1 to 9, a piston cooling injection system includes a main oil gallery 1, an auxiliary oil gallery 2, a first control oil gallery 3, a second control oil gallery 4, a confluent oil gallery 5, an oil injection mechanism 6, a thermosensitive control mechanism 7, a first connecting oil gallery 8, a second connecting oil gallery 9, and an auxiliary oil gallery connecting oil gallery 10;
the main oil gallery 1 is communicated with the first control oil gallery 3 through a first connecting oil gallery 8; the main oil duct 1 is communicated with the second control oil duct 4 through a second connecting oil duct 9; the second control oil passage 4 and the first control oil passage 3 are both communicated with the converging oil passage 5; the confluence oil passage 5 is communicated to the auxiliary oil passage 2 through the auxiliary oil passage connecting oil passage 10; the oil injection mechanism 6 is arranged to communicate with the auxiliary oil passage 2 to inject oil for cooling the piston in the cylinder;
the number of the thermosensitive control mechanisms 7 is two, and the two thermosensitive control mechanisms 7 are respectively arranged in the first control oil duct 3 and the second control oil duct 4 to control the connection and disconnection between the second control oil duct 4 and the converging oil duct 5 or the connection and disconnection between the first control oil duct 3 and the converging oil duct 5. The control of the opening or closing of the channels by the thermally sensitive control mechanism 7 improves the reliability of the operation of the system.
The oil liquid flows out through the main oil duct 1 and respectively enters a first connecting oil duct 8 and a second connecting oil duct 9, the first connecting oil duct 8 is communicated to a first control oil duct 3, the second connecting oil duct 9 is communicated to a second control oil duct 4, the oil liquid of the first control oil duct 3 and the oil liquid of the second control oil duct 4 are converged into a converging oil duct 5 and then enter an auxiliary oil duct 2 through an auxiliary oil duct connecting oil duct 10, and the oil liquid enters the auxiliary oil duct 2 and then enters the oil injection mechanism 6 to perform oil injection cooling on the corresponding piston. Two independent oil channel flowing loops are arranged, so that paralysis of the whole cooling loop caused by blockage of one oil channel loop is avoided, the two thermosensitive control mechanisms 7 are arranged in parallel, and the running reliability of the system is improved.
Specifically, the thermosensitive control mechanism 7 comprises a valve seat 71, a bracket 72, a push rod 73, a sensor assembly 74, a valve closing member 75, a resetting member 76 and a push rod top plate 77;
the valve seat 71 is disposed in the first control oil passage 3, and the valve seat 71 divides the first control oil passage 3 into an upper control oil passage 31 and a lower control oil passage 32; a valve seat through hole 711 is formed in the valve seat 71, and the valve seat through hole 711 communicates the upper control oil passage 31 and the lower control oil passage 32;
the bracket 72 is fixed on the valve seat 71, the push rod top plate 77 is fixed on the valve seat 71, and the push rod top plate 77 and the bracket 72 are oppositely arranged on two sides of the valve seat 71;
the sensor assembly 74 is connected with the push rod 73 through a rubber tube, and the rubber tube is wrapped on the outer side of the push rod 73;
the sensor assembly 74 is internally provided with heat-sensitive materials such as paraffin and the like, when the oil temperature is higher than the engine oil temperature control line, the paraffin in the sensor assembly 74 is melted, and the volume of a liquid state formed after the paraffin is melted is larger than that of a solid state. The expansion of the volume of paraffin compresses the sensor assembly 74 and the rubber tube wrapped around the push rod 73 causing it to contract. When the rubber tube contracts, a thrust force is generated on the push rod 73, and the push rod 73 has a reaction force on the rubber tube. The push rod 73 is not movable relative to the valve seat 71 due to the tight connection between the push rod and the valve seat, and the sensor assembly 74 and the valve closing member 75 are also tightly connected. The sensor element 74 is then forced away from the valve seat 71 under the action of the reaction force, thereby opening the valve seat through hole 711 between the valve seat 71 and the valve closure member 75.
The upper control oil passage 31 and the lower control oil passage 32 communicate oil to enter the confluence oil passage 5 through the first control oil passage 3 and then enter the oil injection mechanism 6.
When the temperature of the oil is low and the heat sensitive material is no longer expanded, the force applied to the push rod 73 is removed, and the restoring force of the restoring member 76 drives the valve closing member 76 to move toward the valve seat through hole 711 to close the valve seat through hole 711.
Specifically, the reset element 76 is a reset spring, a first end of the reset spring abuts against the valve closing element 75, and a second end of the reset spring abuts against the bracket 72.
In order to improve the operation reliability of the system, the system is provided with two thermosensitive control mechanisms 7 which are respectively fixed in the first control oil duct 3 and the second control oil duct 4 and are arranged in parallel in the oil passage. When one path of the oil liquid is failed to open the oil liquid channel, the other path of the oil liquid channel is standby to ensure the safe and reliable cooling of the piston. And the probability of two paths simultaneously failing is extremely low.
Further, the temperature-sensitive control mechanism 7 further includes a penetration hole 78, the penetration hole 78 being provided to communicate the upper control oil passage 31 and the lower control oil passage 32 to flow up the oil in the first control oil passage 3; a penetration oil outlet 33 is provided on a sidewall of the lower control oil passage 32, and the penetration oil outlet 33 is used to discharge oil penetrated through the penetration hole 78. Wherein the penetration holes 78 are waist-shaped holes, the length of the waist-shaped holes is 3mm, and the width of the waist-shaped holes is 1.5 mm; the pore diameter of the penetrating oil outlet 33 is 2 mm. The oil slowly overflows into the lower control oil passage 32 through the kidney-shaped hole and overflows to the oil pan through a permeated oil outlet provided in the lower control oil passage 32. According to the general principle of fluid, the liquid can only flow to effectively transfer heat. The slow overflow of fluid through infiltration hole 78 and infiltration oil export 33 can guarantee timely real transmission of fluid temperature to continuously preheat temperature sensing control mechanism 7, so that when the temperature reaches fluid temperature control line, can in time open temperature sensing control mechanism 7's disk seat through-hole 711. And the size of the permeate aperture 78 and the permeate outlet 33 are small, even if there is flooding, without causing a large loss of pressure throughout the lubrication system.
Further, the oil injection mechanism 6 comprises an injection body 61, a nozzle 62, a positioning sheet 63, a perforated bolt 64, an oil injection valve core 65, an oil injection spring 66 and a limiting block 67;
the spraying body 61 is fixed on the cylinder body through the positioning plate 63, the perforation bolt 64 is fixed on the spraying body 61, the perforation bolt 64 is provided with a first perforation and a second perforation, and the first perforation is vertically intersected with the second perforation.
The first end of the first through hole is communicated with an oil injection channel, and the oil injection channel is communicated with the auxiliary oil duct 2; a nozzle channel is arranged on the nozzle 62, the first through hole is communicated with a second through hole, and the second through hole is communicated with the nozzle channel;
the oil injection valve core 65 moves in the first through hole to plug or open a connecting channel between the first through hole and the second through hole;
the first end of the oil injection spring 66 abuts against the oil injection valve core 65, and the second end of the oil injection spring 66 abuts against the limiting block 67.
The oil injection valve core 65 blocks the communication channel of the first through hole and the second through hole under the action of the oil injection spring 66, and simultaneously blocks the communication channel of the first through hole and the nozzle channel. At this point the nozzle 62 is not injecting oil.
As the oil pressure in the oil injection passage increases, the oil pressure pushes the oil injection valve core 65 to move toward the direction close to the stopper 67, and at this time, the first through hole is communicated with the second through hole, thereby communicating the first through hole with the nozzle passage.
The oil injection mechanisms 6 are arranged in a plurality, and the oil injection mechanisms 6 are opposite to the positions of the corresponding cylinder holes of the engine cylinders one by one.
The invention discloses a piston cooling injection system, which realizes timely injection cooling of a piston in a region above an oil pressure control line and above an oil temperature control line through dual control based on pressure and temperature, realizes temperature control by adopting a thermosensitive control mechanism, and realizes pressure control by adopting an oil injection mechanism. The running reliability of the piston kinematic pair is ensured, excessive cooling is avoided, the temperature of lubricating oil is improved, friction loss is reduced, the temperature of a combustion chamber is improved, the heat efficiency is improved, the consumption of the lubricating oil is reduced, and the emission is facilitated.
For temperature-based control, the system can enable the thermosensitive control mechanism to feed back the engine oil temperature timely and truly through skillfully designing the permeation hole. Therefore, the reliability of piston cooling is fully identified, and the reliability degree of system operation is greatly improved.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (5)
1. A piston cooling injection system, characterized by: the oil spraying device comprises a main oil duct, an auxiliary oil duct, a first control oil duct, a second control oil duct, a converging oil duct, an oil spraying mechanism, a thermosensitive control mechanism, a first connecting oil duct, a second connecting oil duct and an auxiliary oil duct connecting oil duct;
the main oil duct is communicated with the first control oil duct through a first connecting oil duct; the main oil duct is communicated with the second control oil duct through a second connecting oil duct; the second control oil passage and the first control oil passage are both communicated with the converging oil passage; the confluence oil passage is communicated to the auxiliary oil passage through the auxiliary oil passage connecting oil passage; the oil injection mechanism is arranged to be communicated with the auxiliary oil duct so as to inject oil to cool the piston in the cylinder body;
the number of the thermosensitive control mechanisms is two, and the two thermosensitive control mechanisms are respectively arranged in the first control oil duct and the second control oil duct so as to control the connection and disconnection between the second control oil duct and the converging oil duct or the connection and disconnection between the first control oil duct and the converging oil duct;
the heat-sensitive control mechanism comprises a valve seat, a bracket, a push rod, an inductor assembly, a valve closing piece, a resetting piece and a push rod top plate;
the valve seat is arranged in the first control oil duct and divides the first control oil duct into an upper control oil duct and a lower control oil duct; a valve seat through hole is formed in the valve seat and is communicated with the upper control oil duct and the lower control oil duct;
the support is fixed on the valve seat, the push rod top plate is fixed on the valve seat, and the push rod top plate and the support are oppositely arranged on two sides of the valve seat;
the sensor assembly is connected with the push rod through a rubber tube, and the rubber tube is wrapped on the outer side of the push rod;
the heat-sensitive control mechanism further comprises a penetration hole provided for communicating the upper control oil passage and the lower control oil passage;
and a penetrating oil outlet is formed in the side wall of the lower control oil duct and used for discharging oil penetrating through the penetrating holes.
2. The piston cooling injection system of claim 1, wherein: the reset piece is a reset spring, the first end of the reset spring is abutted to the valve closing piece, and the second end of the reset spring is abutted to the support.
3. The piston cooling injection system of claim 1, wherein: the penetration holes are waist-shaped holes, the length of each waist-shaped hole is 3mm, and the width of each waist-shaped hole is 1.5 mm; the aperture of the penetrating oil outlet is 2 mm.
4. The piston cooling injection system of claim 1, wherein: the oil injection mechanism comprises an injection body, a nozzle, a positioning sheet, a perforated bolt, an oil injection valve core, an oil injection spring and a limiting block;
the spraying body is fixed on the cylinder body through the positioning sheet, the perforated bolt is fixed on the spraying body, a first perforation and a second perforation are arranged on the perforated bolt, and the first perforation is vertically intersected with the second perforation;
the first end of the first through hole is communicated with an oil injection channel, and the oil injection channel is communicated with the auxiliary oil duct; the nozzle is provided with a nozzle channel, the first through hole is communicated with a second through hole, and the second through hole is communicated with the nozzle channel;
the oil injection valve core is movably arranged in the first through hole to plug or open a connecting channel between the first through hole and the second through hole;
the first end of the oil injection spring is abutted to the oil injection valve core, and the second end of the oil injection spring is abutted to the limiting block.
5. The piston cooling injection system of claim 4, wherein: the oil injection mechanisms are arranged in a plurality, and the oil injection mechanisms are opposite to the corresponding cylinder holes of the engine cylinders one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554849.8A CN109441609B (en) | 2018-12-19 | 2018-12-19 | Piston cooling injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554849.8A CN109441609B (en) | 2018-12-19 | 2018-12-19 | Piston cooling injection system |
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| CN109441609A CN109441609A (en) | 2019-03-08 |
| CN109441609B true CN109441609B (en) | 2020-01-14 |
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| CN201811554849.8A Active CN109441609B (en) | 2018-12-19 | 2018-12-19 | Piston cooling injection system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886570A (en) * | 2010-06-02 | 2010-11-17 | 奇瑞汽车股份有限公司 | Piston cooling spray nozzle structure |
| CN102575614A (en) * | 2009-07-25 | 2012-07-11 | Ks科尔本施密特有限公司 | Method for cooling a piston and a cooled piston |
| CN102678250A (en) * | 2012-04-26 | 2012-09-19 | 长城汽车股份有限公司 | Engine piston cooling device |
| JP2017145757A (en) * | 2016-02-17 | 2017-08-24 | トヨタ自動車株式会社 | Internal combustion engine control device |
| JP2017180132A (en) * | 2016-03-28 | 2017-10-05 | いすゞ自動車株式会社 | Oil injection device |
-
2018
- 2018-12-19 CN CN201811554849.8A patent/CN109441609B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575614A (en) * | 2009-07-25 | 2012-07-11 | Ks科尔本施密特有限公司 | Method for cooling a piston and a cooled piston |
| CN101886570A (en) * | 2010-06-02 | 2010-11-17 | 奇瑞汽车股份有限公司 | Piston cooling spray nozzle structure |
| CN102678250A (en) * | 2012-04-26 | 2012-09-19 | 长城汽车股份有限公司 | Engine piston cooling device |
| JP2017145757A (en) * | 2016-02-17 | 2017-08-24 | トヨタ自動車株式会社 | Internal combustion engine control device |
| JP2017180132A (en) * | 2016-03-28 | 2017-10-05 | いすゞ自動車株式会社 | Oil injection device |
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| CN109441609A (en) | 2019-03-08 |
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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