CN109098830B - Cooling water jacket of diesel engine - Google Patents

Cooling water jacket of diesel engine Download PDF

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Publication number
CN109098830B
CN109098830B CN201810929951.5A CN201810929951A CN109098830B CN 109098830 B CN109098830 B CN 109098830B CN 201810929951 A CN201810929951 A CN 201810929951A CN 109098830 B CN109098830 B CN 109098830B
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cylinder
annular
cooling
water jacket
cold water
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CN109098830A (en
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尤建国
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Quanjiao Power Machinery Co ltd
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Quanjiao Power Machinery Co ltd
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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
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/021—Cooling cylinders

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention provides a cooling water jacket of a diesel engine, which comprises a cylinder body, a cylinder body water jacket, a piston, a cylinder cover and a cylinder cover water jacket, wherein the cylinder cover is arranged in the cylinder body; the cylinder cover water jacket can cool the cylinder sleeve and the piston with high temperature, the cooling effect is good, the cylinder collapse condition caused by uneven cooling can be avoided, the working efficiency and the service life of the diesel engine are improved, the combustion chamber can be cooled through the cylinder cover water jacket, the uniformity of heat dissipation and cooling can be improved through the annular cold water cavity, the first annular cooling pipe and the second annular cooling pipe, and the cylinder cover collapse condition caused by local overheating or overcooling can not occur.

Description

Cooling water jacket of diesel engine
Technical Field
The invention relates to the field of diesel engines, in particular to a cooling water jacket of a diesel engine.
Background
An internal combustion engine is a power machine, which is a heat engine that directly converts the heat energy released by burning fuel in the machine into power, and is commonly referred to as a diesel engine and a gasoline engine
The existing diesel engine works, the gas temperature in the cylinder can reach 1727 ~ 2527 ℃, if not cool in time, will cause the diesel engine spare part high temperature, especially direct part with the contact of high-temperature gas, can influence normal fit clearance because of thermal expansion, lead to the motion piece to be obstructed or even card to die, high temperature still can cause the mechanical strength decline of diesel engine spare part, make lubricating oil lose effect, current diesel engine cooling water jacket design is not reasonable enough simultaneously, local cooling or local overheated phenomenon often can appear, lead to cooling the inequality and lead to the fact the diesel engine stress strain to appear, the diesel engine cylinder liner makes the jar condition that collapses appear easily, cause danger. Therefore, the invention provides a cooling water jacket of a diesel engine, which aims to solve the defects in the prior art.
Disclosure of Invention
In order to solve the problems, the invention provides a cylinder cover and a piston which are high in temperature and can be cooled by a cylinder block water jacket, the cooling and heat dissipation are uniform, the cooling effect is good, the cylinder collapse condition caused by uneven cooling can be avoided, the working efficiency of a diesel engine is improved, the service life of the diesel engine is prolonged, a combustion chamber can be cooled by the cylinder cover water jacket, the heat dissipation and cooling uniformity can be improved by an annular cold water cavity, a first annular cooling pipe and a second annular cooling pipe, and the cylinder cover collapse condition caused by local overheating or supercooling can be avoided.
The invention provides a cooling water jacket of a diesel engine, which comprises a cylinder body, a cylinder body water jacket, a piston, a cylinder cover and a cylinder cover water jacket, wherein the cylinder body is arranged in the cylinder body, the cylinder body water jacket is arranged on the outer side of the cylinder body, the cylinder body water jacket comprises a cylinder cold water cavity and a cooling pipe, the cylinder cold water cavity is vertically arranged in the cylinder body, the cooling pipe is connected with the side wall of the cylinder cover, the cylinder cold water cavity is communicated with the cooling pipe through a branch pipe, the piston is arranged in the cylinder cover, a combustion chamber is arranged at the top end of the piston, an air ring, a first oil ring and a second oil ring are sequentially arranged on the side wall of the upper end of the piston from top to bottom, the cylinder cover is arranged at the.
The further improvement lies in that: the cylinder cover water jacket comprises an annular cold water cavity, a first annular cooling pipe and a second annular cooling pipe, the annular cold water cavity is connected with the water inlet hole, a guide pipe is arranged at the bottom of the annular cold water cavity and communicated with the cylinder cold water cavity, and the annular cold water cavity, the first annular cooling pipe and the second annular cooling pipe are communicated through crossed water holes.
The further improvement lies in that: the annular cold water cavity, the first annular cooling pipe and the second annular cooling pipe are arranged concentrically, and at least two groups of crossed water holes are arranged.
The further improvement lies in that: the cylinder cold water cavity is equipped with two sets at least, cylinder cold water cavity and honeycomb duct quantity, position looks adaptation.
The further improvement lies in that: the upper end of the cooling pipe is consistent with the height of the upper edge of the gas ring at the top dead center when the piston moves.
The further improvement lies in that: the cylinder cold water chamber and the annular cold water intracavity are all fixed and are equipped with the ring of chocking a current, be equipped with the net of chokeing a current on the ring of chocking a current, the ring diameter of chokeing a current respectively with cylinder cold water chamber and annular cold water chamber diameter looks adaptation.
The invention has the beneficial effects that: can cool off the cylinder jacket of high temperature through the cylinder block water jacket, the piston, the cooling heat dissipation is even, the cooling effect is good, can avoid appearing the cylinder collapse condition that the cooling inequality leads to, the work efficiency and the life of diesel engine have been improved, can cool off the combustion chamber through the cylinder block water jacket, simultaneously, through annular cold water chamber, first annular cooling tube and second annular cooling tube can improve the refrigerated homogeneity of heat dissipation, the cylinder head that local overheat or the supercooling condition caused can not appear collapses the condition, through the setting along highly uniform on the cooling tube upper end height and the gas ring when the piston moves to the top dead center, cooling water in the cooling tube can cool off and dispel the heat to the gas ring of high temperature, the stress strain condition that the gas ring high temperature caused has been avoided, avoid the diesel engine mechanical jamming phenomenon to appear, the stability of diesel engine work has been guaranteed, choked flow net through being equipped with on the choked flow ring can slow down the cooling water in cylinder cold water chamber and annular cold water The flow velocity improves the cooling efficiency and the cooling and radiating effect is better.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of a cylinder block water jacket structure according to the present invention;
FIG. 3 is a schematic view of the cylinder head water jacket structure of the present invention;
FIG. 4 is a schematic view of a choke ring structure according to the present invention;
FIG. 5 is a schematic view of the structure of the water inlet hole of the present invention.
Wherein: the cooling device comprises a cylinder body 1, a cylinder body 2, a cylinder body water jacket, a piston 3, a cylinder cover 4, a cylinder cover 5, a cylinder cover 6, a cylinder sleeve 7, a cylinder cooling water cavity 8, a cooling pipe 9, a combustion chamber 10, an air ring 11, a first oil ring 12, a second oil ring 12, a water inlet 13, an annular cooling water cavity 14, a first annular cooling pipe 15, a second annular cooling pipe 16, a flow guide pipe 17, a water cross hole 18, a flow choking ring 19 and a flow choking net 20.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
According to fig. 1-5, the embodiment provides a cooling water jacket for a diesel engine, which includes a cylinder block 1, a cylinder block water jacket 2, a piston 3, a cylinder head 4, and a cylinder head water jacket 5, wherein a cylinder liner 6 is disposed in the cylinder block 1, the cylinder block water jacket 2 is disposed outside the cylinder liner 6, the cylinder block water jacket 2 includes a cylinder cold water cavity 7 and a cooling pipe 8, the cylinder cold water cavity 7 is vertically disposed in the cylinder block 1, the cooling pipe 8 is connected to a side wall of the cylinder liner 6, the cylinder cold water cavity 7 is communicated with the cooling pipe 8 through a branch pipe, the piston 3 is disposed inside the cylinder liner 6, a combustion chamber 9 is disposed at a top end of the piston 3, an air ring 10, a first oil ring 11, and a second oil ring 12 are sequentially disposed on a side wall of an upper end of the piston 3 from top to bottom, the cylinder head 4 is disposed at, a water inlet hole 13 is formed in the side wall of the cylinder cover 4;
the cylinder cover water jacket 5 comprises an annular cold water cavity 14, a first annular cooling pipe 15 and a second annular cooling pipe 16, the annular cold water cavity 14 is connected with a water inlet hole 13, a guide pipe 17 is arranged at the bottom of the annular cold water cavity 14, the guide pipe 17 is communicated with the cylinder cold water cavity 7, the annular cold water cavity 14, the first annular cooling pipe 15 and the second annular cooling pipe 16 are communicated through a cross water hole 18, the combustion chamber 9 can be cooled through the cylinder cover water jacket 5, meanwhile, the uniformity of heat dissipation and cooling can be improved through the annular cold water cavity 14, the first annular cooling pipe 15 and the second annular cooling pipe 16, and the cylinder cover 4 cannot be broken due to local overheating or overcooling conditions;
the annular cold water cavity 14, the first annular cooling pipe 15 and the second annular cooling pipe 16 are concentrically arranged, at least two groups of cross water holes 18 are arranged, the cooling area of the cylinder cover water jacket 5 on the cylinder cover 4 and the combustion chamber 9 can be increased by arranging the first annular cooling pipe 15 and the second annular cooling pipe 16, and the cooling efficiency is improved;
the cylinder cold water chambers 7 are at least provided with two groups, the number and the positions of the cylinder cold water chambers 7 are matched with those of the guide pipes 17, and the cylinder cold water chambers 7 are communicated with the guide pipes 17, so that the cylinder water jacket 2 and the cylinder cover water jacket 5 can form a whole body for circulating cooling, the cooling uniformity is improved, the cooling effect is good, and the loss of a diesel engine caused by local overheating or overcooling can be avoided;
the height of the upper end of the cooling pipe 8 is consistent with that of the upper edge of the gas ring 10 at the top dead center when the piston 3 moves to the top dead center, and the height of the upper end of the cooling pipe 8 is consistent with that of the upper edge of the gas ring 10 when the piston 3 moves to the top dead center, so that cooling water in the cooling pipe 8 can cool and radiate the high-temperature gas ring 10, the stress strain condition caused by overhigh temperature of the gas ring 10 is avoided, the mechanical jamming phenomenon of the diesel engine is avoided, and the working stability of the diesel engine is ensured;
the cylinder cold water chamber 7 and the annular cold water chamber 14 are internally and fixedly provided with a flow blocking ring 19, the flow blocking ring 19 is provided with a flow blocking net 20, the diameter of the flow blocking ring 19 is matched with the diameters of the cylinder cold water chamber 7 and the annular cold water chamber 14 respectively, the flow velocity of cooling water in the cylinder cold water chamber 7 and the annular cold water chamber 14 can be reduced through the flow blocking net 20 arranged on the flow blocking ring 19, the cooling efficiency is improved, and the cooling and heat dissipation effects are better.
The cylinder sleeve 6 and the piston 3 with high temperature can be cooled through the cylinder block water jacket 2, the cooling and heat dissipation are uniform, the cooling effect is good, the cylinder collapse condition caused by uneven cooling can be avoided, the working efficiency and the service life of the diesel engine are improved, the combustion chamber 9 can be cooled through the cylinder cover water jacket 5, the uniformity of heat dissipation and cooling can be improved through the annular cold water cavity 14, the first annular cooling pipe 15 and the second annular cooling pipe 16, the cylinder cover collapse condition caused by local overheating or supercooling can not be caused, through the arrangement that the height of the upper end of the cooling pipe 8 is consistent with the height of the upper edge of the air ring 10 when the piston 3 moves to the top dead center, the cooling water in the cooling pipe 8 can cool and dissipate the air ring 10 with high temperature, the stress strain condition caused by overhigh temperature of the air ring 10 is avoided, and the mechanical jamming phenomenon of the diesel engine is avoided, the stability of diesel engine work has been guaranteed, and the net 20 that hinders that is equipped with on the ring 19 of hindering the flow can slow down the velocity of flow of cooling water in cylinder cold water chamber 7 and annular cold water chamber 14, has improved cooling efficiency, and the cooling radiating effect is better.
The working principle is as follows: when the diesel engine works, cooling water is injected into the cylinder head water jacket 5 through the water inlet hole 13, the cooling water enters the first annular cooling pipe 15 and the second annular cooling pipe 16 through the annular cold water cavity 14 and the cross water holes 18 to cool and radiate the cylinder head 4 and the combustion chamber 9, the cooling water enters the cylinder cold water cavity 7 in the cylinder head water jacket 2 through the guide pipe 17, the cooling water in the cylinder cold water cavity 7 enters the cooling pipe 8 through the branch flow pipe, the cooling water in the cooling pipe 8 can cool and radiate the cylinder jacket 6, the piston 3, the gas ring 10, the first oil ring 11 and the second oil ring 12, and after a water pump in the diesel engine cooling system works, the cooling water in the cylinder head water jacket 2 and the cylinder head water jacket 5 is pumped out in a circulating mode to cool the diesel engine.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. A diesel engine cooling water jacket is characterized in that: the cylinder cooling device comprises a cylinder body (1), a cylinder body water jacket (2), a piston (3), a cylinder cover (4) and a cylinder cover water jacket (5), wherein a cylinder sleeve (6) is arranged in the cylinder body (1), the cylinder body water jacket (2) is arranged on the outer side of the cylinder sleeve (6), the cylinder body water jacket (2) comprises a cylinder cooling water cavity (7) and a cooling pipe (8), the cylinder cooling water cavity (7) is vertically arranged in the cylinder body (1), the cooling pipe (8) is connected with the side wall of the cylinder sleeve (6), the cylinder cooling water cavity (7) is communicated with the cooling pipe (8) through a branch pipe, the piston (3) is arranged inside the cylinder sleeve (6), a combustion chamber (9) is arranged at the top end of the piston (3), a gas ring (10), a first oil ring (11) and a second oil ring (12) are sequentially arranged on the side wall of the upper end of the piston (3), the cylinder head (4) is internally provided with a cylinder head water jacket (5) right facing the combustion chamber (9), the side wall of the cylinder head (4) is provided with a water inlet hole (13), the cylinder head water jacket (5) comprises an annular cold water cavity (14), a first annular cooling pipe (15) and a second annular cooling pipe (16), the annular cold water cavity (14) is connected with the water inlet hole (13), the bottom of the annular cold water cavity (14) is provided with a flow guide pipe (17), the flow guide pipe (17) is communicated with the column cold water cavity (7), and the annular cold water cavity (14), the first annular cooling pipe (15) and the second annular cooling pipe (16) are communicated through a cross water hole (18).
2. The diesel engine cooling water jacket according to claim 1, wherein: the annular cold water cavity (14), the first annular cooling pipe (15) and the second annular cooling pipe (16) are concentrically arranged, and at least two groups of crossed water holes (18) are arranged.
3. The diesel engine cooling water jacket according to claim 1, wherein: the column cold water chambers (7) are at least provided with two groups, and the number and the positions of the column cold water chambers (7) are matched with those of the guide pipes (17).
4. The diesel engine cooling water jacket according to claim 1, wherein: the upper end of the cooling pipe (8) is consistent with the height of the upper edge of the gas ring (10) at the top dead center when the piston (3) moves.
5. The diesel engine cooling water jacket according to claim 1, wherein: the cylinder cold water chamber (7) and the annular cold water chamber (14) are internally and fixedly provided with a flow blocking ring (19), the flow blocking ring (19) is provided with a flow blocking net (20), and the diameter of the flow blocking ring (19) is respectively matched with the diameters of the cylinder cold water chamber (7) and the annular cold water chamber (14).
CN201810929951.5A 2018-08-15 2018-08-15 Cooling water jacket of diesel engine Active CN109098830B (en)

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CN201810929951.5A CN109098830B (en) 2018-08-15 2018-08-15 Cooling water jacket of diesel engine

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Application Number Priority Date Filing Date Title
CN201810929951.5A CN109098830B (en) 2018-08-15 2018-08-15 Cooling water jacket of diesel engine

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CN109098830A CN109098830A (en) 2018-12-28
CN109098830B true CN109098830B (en) 2020-09-04

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB234232A (en) * 1924-03-25 1925-05-28 Gen Electric Co Ltd Improvements in cylinder liners for internal combustion engines
KR20080006783A (en) * 2006-07-13 2008-01-17 현대자동차주식회사 Structure of cooling upper of cylinder block for engine
CN203742813U (en) * 2014-03-12 2014-07-30 无锡华源凯马发动机有限公司 Split type aluminumalloy cylinder liner of single-cylinder water-cooled diesel engine
CN105822451A (en) * 2016-05-18 2016-08-03 中国北方发动机研究所(天津) Diesel engine cylinder cover with cooling water jacket structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600621B1 (en) * 2004-05-24 2014-09-03 Honda Motor Co., Ltd. Cylinder liner cooling structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB234232A (en) * 1924-03-25 1925-05-28 Gen Electric Co Ltd Improvements in cylinder liners for internal combustion engines
KR20080006783A (en) * 2006-07-13 2008-01-17 현대자동차주식회사 Structure of cooling upper of cylinder block for engine
CN203742813U (en) * 2014-03-12 2014-07-30 无锡华源凯马发动机有限公司 Split type aluminumalloy cylinder liner of single-cylinder water-cooled diesel engine
CN105822451A (en) * 2016-05-18 2016-08-03 中国北方发动机研究所(天津) Diesel engine cylinder cover with cooling water jacket structure

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