CN102797582B - Water jacket of cylinder body of diesel engine - Google Patents
Water jacket of cylinder body of diesel engine Download PDFInfo
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- CN102797582B CN102797582B CN201210272260.5A CN201210272260A CN102797582B CN 102797582 B CN102797582 B CN 102797582B CN 201210272260 A CN201210272260 A CN 201210272260A CN 102797582 B CN102797582 B CN 102797582B
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- water
- cylinder
- jacket
- diesel engine
- water jacket
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 239000000110 cooling liquid Substances 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a water jacket of a cylinder body of a diesel engine. The water jacket mainly comprises a ring-shaped cavity at the periphery of the cylinder body, wherein a water hole is formed in a nasal bridge zone between adjacent two cylinder holes; a water outlet of a spiral case of a water pump is communicated with the water jacket of the cylinder body; and the water hole in the nasal bridge zone is communicated with the water jacket of the cylinder body and integrally casted and formed with the water jacket of the cylinder body. After entering the water jacket of the cylinder body from the water outlet of the spiral case of the water pump, cooling liquid is divided into two ways at an intersecting part of the adjacent two cylinder holes; and one way of cooling liquid flows through the water hole in the nasal bridge zone, and the other way of cooling liquid flows into a water jacket of the next cylinder hole. Compared with the prior art, through integrally casting and forming the water hole in the nasal bridge zone and the water jacket of the cylinder body, water ways between adjacent two cylinders are directly connected, so that the working temperature of the nasal bridge zone can be better reduced; and besides, the casting manner is simple, so that the difficulty of a processing technology of the water jacket is reduced as much as possible.
Description
Technical field
The present invention relates to a kind of cylinder of diesel engine water jacket.
Background technique
Block jacket is the chief component of engine-cooling system, the mixture of fuel and air is when combustion chambers burn, the amount of heat producing is passed on cylinder hole wall, if the cooling capacity deficiency of the cylinder liner water jacket outside cylinder hole, high temperature will make cylinder-bore very easily deform, thereby cause engine piston, piston ring operation irregularity, cause machine oil sintering, fuel consume and consumption of lubricating oil high, discharge defective, scuffing of cylinder bore and even motor is scrapped.
Current, conventional diesel engine is considered the compactedness of complete machine, and block jacket design is generally the oblique water hole in machining small footpath, the ridge area of cylinder block, that also ridge area is done is very thin, after cylinder block has been cast, then in ridge area, process oblique water hole, allow cooling liquid pass through, to reduce the operating temperature of ridge area, this method often can not fully reduce the temperature of ridge area, and tiltedly water hole processing technology difficulty is larger, to machining tool, requires high, productive temp is long, thereby has increased cost; In addition, the lesser circulation of diesel engine disposes peripheral pipeline composition, strengthen the cooling capacity of block jacket, so that meet motor usage requirement, but annex is very complicated, has also affected the compactedness of complete machine.
Summary of the invention
Technical problem to be solved by this invention is to provide follow-up block jacket a kind of time, and this water jacket can better reduce the operating temperature of ridge area, and the processing technology difficulty of water jacket is lower.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of cylinder of diesel engine water jacket, mainly by cylinder block toroidal cavity around, formed, in ridge area between adjacent two cylinder-bore, be provided with water hole, the water outlet of water pump spiral casing is communicated with block jacket, water hole in ridge area is communicated with block jacket, water hole in described ridge area and described block jacket are integrated casting, cooling liquid is entered after block jacket by the water outlet of water pump spiral casing, be divided into two-way being positioned at adjacent two cylinder-bore intersections, one road is flow through the water hole in ridge area, another road flows in the water jacket of next cylinder-bore.
In described block jacket, be also provided with short circle water channel, this short circle water channel one end is communicated with the water outlet of cylinder head jacket, and the other end is communicated with the water intake of described water pump spiral casing.
Described water pump spiral casing is connected with water jacket water inlet along the tangential of described block jacket, and water jacket water inlet is arranged near the upper end of block jacket.
The position being connected with wherein one end of described ridge area in described block jacket is provided with a groove.
Described block jacket forms EGR intake to one section of downward-extension, and EGR intake along continuous straight runs stretch out, and the groove of described ridge area and this EGR intake are positioned at the same side of block jacket.
Described water pump spiral casing is positioned at the position of diesel engine the first cylinder-bore, and described EGR intake is positioned at the position of diesel engine least significant end cylinder-bore.
Described diesel engine has two cylinder-bore.
The present invention adopts technique scheme, compared with prior art, by by the water hole of ridge area and the moulding of block jacket integrally casting, water route between two adjacent cylinder is directly connected, can better reduce the operating temperature of ridge area, and forging type is simple, reduced as much as possible the processing technology difficulty of water jacket.
Accompanying drawing explanation
Fig. 1 is the structural representation of block jacket of the present invention;
Fig. 2 is the working state schematic representation of block jacket of the present invention;
Mark in above-mentioned figure is: 1, water pump spiral casing; 2, current limliting groove; 3, EGR intake; 4, ridge area; 5, short circle water channel; 6, water jacket mold joint; 7, lightening grooves; 8, block jacket; 9, water jacket water inlet; 10, cylinder cap filling pipe end.
Embodiment
Be illustrated in figure 1 a kind of cylinder of diesel engine water jacket 8 of the present invention, mainly by cylinder block toroidal cavity around, formed, in ridge area 4 between adjacent two cylinder-bore, be provided with water hole, the water outlet of water pump spiral casing 1 is communicated with the water jacket water inlet 9 in block jacket 8, and the water hole in ridge area 4 is connected with block jacket 8.In order to solve problems of the prior art, water hole and block jacket 8 in ridge area 4 of the present invention are integrated casting, cooling liquid is entered after block jacket 8 by the water outlet of water pump spiral casing 1, be divided into two-way being positioned at adjacent two cylinder-bore intersections, one road is flow through the water hole in ridge area 4, another road flows in the water jacket of next cylinder-bore, as shown in Figure 2.The present invention compared with prior art, by by the water hole of ridge area 4 and block jacket 8 integrally casting moulding, water route between two adjacent cylinder is directly connected, can better reduce the operating temperature of ridge area 4, guaranteed preferably the water temperature between two adjacent cylinder, and forging type is simple, compared with first casting the mode in cylinder block reprocessing oblique water hole, ridge area, obviously reduced the processing technology difficulty of block jacket 8.
As shown in Figure 1, in block jacket 8, be also provided with short circle water channel 5, these short circle water channel 5 one end are communicated with cylinder head jacket, and the other end is connected with the water intake of water pump spiral casing 1, this short circle water channel 5 is vertical straight water channel, and the diameter of short circle water channel 5 is 6.5mm.In block jacket 8, increase short circle water channel 5, the short circle water route of diesel engine forming is for to flow directly into block jacket 8 from cylinder cover water jacket, then through short circle water channel 5, enters the rear end of water pump spiral casing 1, compared with prior art, reduced the layout of peripheral pipeline, thereby made complete machine compacter.
As shown in Figure 1, water pump spiral casing 1 is connected with water jacket water inlet 9 along the tangential of block jacket 8, and water jacket water inlet 9 is arranged near the upper end of block jacket 8, so that entirety is accelerated near the water velocity of water jacket end face.As shown in Figure 1, block jacket 8 is less than the height at all the other positions at the height that is positioned at water jacket water inlet 9 places, for extending to from water jacket top near water jacket mold joint 6, has formed the current limliting groove 2 below water jacket water inlet 9 herein.
As shown in Figure 1, the position being connected with wherein one end of ridge area 4 in block jacket 8 is provided with a groove that cuts out formation towards block jacket 8 outsides, as the lightening grooves 7 of ridge area 4.Block jacket 8 forms EGR(EGR to one section of downward-extension) intake 3, EGR intake 3 along continuous straight runs stretch out, lightening grooves 7 and this EGR intake 3 are positioned at the same side of block jacket 8, lightening grooves 7 is set to guarantee that cooling liquid flows to water pump spiral casing 1 side from EGR intake 3, has avoided turbulent generation.
As depicted in figs. 1 and 2, this diesel engine has two cylinder-bore, is small displacement diesel engine, and this block jacket 8 is mainly for meeting the user demand of small displacement diesel engine.Water pump spiral casing 1 is positioned at the position of diesel engine the first cylinder-bore, and EGR intake 3 is positioned at the position of diesel engine least significant end cylinder-bore.Block jacket 8 is designed to closed type structure, sand casting process.The fuse of water pump spiral casing 1 is integrated on the front terminal mould of cylinder body, then together with jacket core sub-portfolio.The joint line design of water jacket fuse is slightly upwards being leaned at water jacket overall height half place.The first half cylinder of the first cylinder of block jacket 8 and the later half cylinder of the second cylinder are designed to the later half cylinder of circle, the first cylinder and the first half cylinder of the second cylinder is designed to ellipse.It is large as far as possible that the water jacket bull nose of the fillet at block jacket 8 tops and two cylinder connecting places designs.The bottom of ridge area 4, because temperature itself is lower, is done with meat processing, makes strength increase.The thickness of block jacket 8 is 8mm in addition, more general cylinder body water jacket is slightly thin, and it is longer in short transverse, the region of piston ring end face when piston ring bottom surface is to piston top dead center while having covered piston lower dead center, even if still can guarantee like this heat that current are passed to cylinder barrel by piston ring under severe operating mode takes away, thereby reduce the swell increment of cylinder-bore and the intensity of assurance cylinder-bore, this is all beneficial to the possibility that reduces piston air leakage, reduction engine oil consumption and minimizing scuffing of cylinder bore.
Be illustrated in figure 2 the working state schematic representation of this block jacket 8, from the cooling liquid Main Current of water pump spiral casing 1, to EGR intake 3, also can make to accelerate near the water velocity of cylinder deck (fire power face), thereby take away more heat simultaneously; Arrow represents the flow direction and the flow distribution of cooling liquid in water jacket, in figure, ellipse is cylinder cap filling pipe end 10, the cylinder cap filling pipe end 10 of EGR intake 3 sides that cooling liquid major part is lower from temperature, pressure is higher of cooling cylinder cap flows into cylinder head jacket, cylinder cap filling pipe end 10 areas are herein larger, remainder flows into cylinder head jacket from the less cylinder cap filling pipe end 10 of block jacket 8 relative areas, thereby guarantee that 4 both sides, ridge area have enough pressure differences to impel coolant flow, come better cooling this region.The layout of cylinder cap filling pipe end 10 is considered when cylinder bolt is tightened, the amount of deformation in cylinder hole to be tried one's best even and non-warping, arrange integrated symmetric, evenly, this equally to reducing piston air leakage, reduce engine oil consumption and reduce the possibility of scuffing of cylinder bore favourable.The diameter of the cylinder cap filling pipe end 10 of EGR intake 3 sides is than large (the guaranteeing to realize by head gasket) of water pump spiral casing 1.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; or without improving, design of the present invention and technological scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (7)
1. a cylinder of diesel engine water jacket, mainly by cylinder block toroidal cavity around, formed, in ridge area (4) between adjacent two cylinder-bore, be provided with water hole, the water outlet of water pump spiral casing (1) is communicated with block jacket (8), water hole in ridge area (4) is communicated with block jacket (8), cooling liquid is entered after block jacket (8) by the water outlet of water pump spiral casing (1), be divided into two-way being positioned at adjacent two cylinder-bore intersections, one road is flow through the water hole in ridge area (4), another road flows in the water jacket of next cylinder-bore, it is characterized in that: water hole and described block jacket (8) in described ridge area (4) are integrated casting.
2. cylinder of diesel engine water jacket according to claim 1, it is characterized in that: in described block jacket (8), be also provided with short circle water channel (5), this short circle water channel (5) one end is communicated with the water outlet of cylinder head jacket, and the other end is communicated with the water intake of described water pump spiral casing (1).
3. cylinder of diesel engine water jacket according to claim 1, it is characterized in that: described water pump spiral casing (1) is connected with water jacket water inlet (9) along the tangential of described block jacket (8), water jacket water inlet (9) is arranged near the upper end of block jacket (8).
4. according to the cylinder of diesel engine water jacket described in claim 1 or 2 or 3, it is characterized in that: in the upper position being connected with the wherein one end of described ridge area (4) of described block jacket (8), be provided with a groove.
5. cylinder of diesel engine water jacket according to claim 4, it is characterized in that: described block jacket (8) forms EGR intake (3) to one section of downward-extension, EGR intake (3) along continuous straight runs stretch out, and the groove of described ridge area (4) and this EGR intake (3) are positioned at the same side of block jacket (8).
6. cylinder of diesel engine water jacket according to claim 5, is characterized in that: described water pump spiral casing (1) is positioned at the position of diesel engine the first cylinder-bore, and described EGR intake (3) is positioned at the position of diesel engine least significant end cylinder-bore.
7. cylinder of diesel engine water jacket according to claim 6, is characterized in that: described diesel engine has two cylinder-bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272260.5A CN102797582B (en) | 2012-07-31 | 2012-07-31 | Water jacket of cylinder body of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272260.5A CN102797582B (en) | 2012-07-31 | 2012-07-31 | Water jacket of cylinder body of diesel engine |
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| Publication Number | Publication Date |
|---|---|
| CN102797582A CN102797582A (en) | 2012-11-28 |
| CN102797582B true CN102797582B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210272260.5A Active CN102797582B (en) | 2012-07-31 | 2012-07-31 | Water jacket of cylinder body of diesel engine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224114B (en) * | 2016-10-13 | 2019-05-07 | 广西玉柴机器股份有限公司 | The water inlet structure of cylinder jacket water jacket |
| CN107044356A (en) * | 2016-12-30 | 2017-08-15 | 广西玉柴机器股份有限公司 | The jacket structure for water of the valve diesel of four cylinder two |
| CN110905679B (en) * | 2019-12-02 | 2021-01-05 | 安徽江淮汽车集团股份有限公司 | Water jacket partition plate of engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5086733A (en) * | 1988-08-23 | 1992-02-11 | Honda Giken Kogyo Kabushiki Kaisha | Cooling system for multi-cylinder engine |
| DE19915960A1 (en) * | 1999-04-09 | 2000-10-12 | Audi Ag | Cylinder casing for liquid-cooled internal combustion engine, with slot closed at connecting surface |
| CN101581258A (en) * | 2009-06-12 | 2009-11-18 | 奇瑞汽车股份有限公司 | Water jacket of engine cylinder |
| CN101749140A (en) * | 2009-12-25 | 2010-06-23 | 奇瑞汽车股份有限公司 | Cylinder body water jacket of engine |
| CN201739016U (en) * | 2010-06-24 | 2011-02-09 | 浙江吉利汽车研究院有限公司 | Cooling water channel structure between cylinders of cylinder block |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2516800B2 (en) * | 1988-09-20 | 1996-07-24 | 本田技研工業株式会社 | Multi-cylinder engine cooling system |
| JPH0476252A (en) * | 1990-07-19 | 1992-03-11 | Nippon Light Metal Co Ltd | Concatenated type cylinder liners for internal combustion engine |
| JP2597220B2 (en) * | 1990-07-20 | 1997-04-02 | 株式会社クボタ | Cooling system for siamese-type cylinder of water-cooled multi-cylinder engine |
-
2012
- 2012-07-31 CN CN201210272260.5A patent/CN102797582B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5086733A (en) * | 1988-08-23 | 1992-02-11 | Honda Giken Kogyo Kabushiki Kaisha | Cooling system for multi-cylinder engine |
| DE19915960A1 (en) * | 1999-04-09 | 2000-10-12 | Audi Ag | Cylinder casing for liquid-cooled internal combustion engine, with slot closed at connecting surface |
| CN101581258A (en) * | 2009-06-12 | 2009-11-18 | 奇瑞汽车股份有限公司 | Water jacket of engine cylinder |
| CN101749140A (en) * | 2009-12-25 | 2010-06-23 | 奇瑞汽车股份有限公司 | Cylinder body water jacket of engine |
| CN201739016U (en) * | 2010-06-24 | 2011-02-09 | 浙江吉利汽车研究院有限公司 | Cooling water channel structure between cylinders of cylinder block |
Non-Patent Citations (3)
| Title |
|---|
| JP平2-81920A 1990.03.22 |
| JP平4-76252A 1992.03.11 |
| JP平4-81551A 1992.03.16 |
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| CN102797582A (en) | 2012-11-28 |
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