CN2272493Y - Piston cooling device for four-cylinder diesel engine - Google Patents
Piston cooling device for four-cylinder diesel engine Download PDFInfo
- Publication number
- CN2272493Y CN2272493Y CN 96211432 CN96211432U CN2272493Y CN 2272493 Y CN2272493 Y CN 2272493Y CN 96211432 CN96211432 CN 96211432 CN 96211432 U CN96211432 U CN 96211432U CN 2272493 Y CN2272493 Y CN 2272493Y
- Authority
- CN
- China
- Prior art keywords
- piston head
- main bearing
- nozzle
- bearing seat
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Lubrication Of Internal Combustion Engines (AREA)
- Sliding-Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model provides a piston cooling device for a four-cylinder diesel engine. The utility model is mainly characterized in that lower ends of oil inlets which are arranged in a second main bearing seat and a fourth main bearing seat of a diesel engine are provided with arc-shaped oil grooves which are communicated with oil inlets. Both ends of each oil groove are respectively provided with nozzles which are communicated with each oil groove, two nozzles which are arranged in the second main bearing seat are respectively face to the bottom of a first piston head and a second piston head, and two nozzles of the fourth main bearing seat are respectively face to the bottom of a third piston head and a fourth piston head. The utility model can realize that the bottom of each piston head can continuously spread oil cooling under the condition that the bearing load of a crankshaft is reduced by a crankshaft counter balance and the internal moment of the crankshaft is reduced by the crankshaft counter balance.
Description
The utility model relates to the device of cooling internal combustion engines piston, particularly a kind of four-cylinder diesel engine piston cooling device.
During diesel engine work, temperature is very high in piston head bottom and the annular groove, even also can produce more machine oil carbon deposit under at less load (46kw), than the situation of the slow-speed of revolution (3000r/min).And when working under the working condition of 52kw, 3600r/min, then the piston head carbon deposit is serious, can make piston ring stuck and cause scuffing of cylinder bore.American commings C serial diesel engine adopts and to get out a direction towards the through hole of corresponding piston head bottom, be pressed into oil injection nozzle in described through hole on each main bearing seat of body, and the oil groove that off-centre mills out on oil injection nozzle and the corresponding main bearing seat is communicated.Come cooling piston with the way of each piston head bottom being sprayed machine oil respectively, to prevent the piston crown coking.But in the above-mentioned structure, the oil spout route of nozzle is subjected to the interference of crankshaft counter balance motion easily, makes oil spout can not be sprayed onto the bottom of piston head continuously, influences cooling effect.In order to improve cooling effect, also can adopt the motion of crankshaft counter balance not stop the way of nozzle oil spout route, promptly adopt and dwindle the equilibrium block radius or to cut the part that equilibrium block and oil spout route disturb mutually, though above-mentioned structure can make oil spout be sprayed onto the piston head bottom continuously, improve cooling effect, but make equilibrium block can not give full play to it and reduce bearing load and the effect that reduces the bent axle moment of resistance, make bearing and bent axle impaired easily, shortened both operating lives.
The purpose of this utility model is that a kind of improved four-cylinder diesel engine piston cooling device will be provided, this device can keep and can reduce under bearing load and the appropriate design condition that reduces the bent axle moment of resistance, still can do continuous oil spout cooling to each piston head bottom at crankshaft counter balance, solves the too high and problem of coking of piston crown Yin Wendu.
Task of the present utility model is finished as follows.
A kind of four-cylinder diesel engine piston cooling device, comprise the second road main bearing seat and the 4th road main bearing seat of bringing oilhole into, its characteristics are that the oil inlet hole lower end is provided with the arc oil groove that communicates with oil inlet hole in described the second, the 4th road main bearing seat, described oil groove two ends are respectively equipped with the nozzle that communicates with oil groove, and a nozzle in the described second road main bearing seat is towards the bottom of first piston head; Another nozzle is towards second piston head bottom, and a nozzle in described the 4th road main bearing seat is towards the 3rd piston head bottom, and another nozzle is towards the bottom of the 4th piston head.
The utility model four-cylinder diesel engine can be drilled with respectively with the arc oil groove two ends of the second road main bearing seat of piston cooling device: the through hole towards first piston head bottom is embedded with the nozzle that communicates with oil groove in the described through hole; Through hole towards second piston head bottom is embedded with the nozzle that communicates with oil groove in the described through hole, the oil groove two ends of described the 4th road main bearing seat can be drilled with respectively: towards the through hole of the 3rd piston head bottom, described through hole is embedded with the nozzle that communicates with oil groove; Through hole towards the 4th piston head bottom is embedded with the nozzle that communicates with oil groove in the described through hole.
The utility model compared to the prior art, since with arrangement of nozzles second with the 4th main bearing seat on, its oil spout route has just in time avoided being located at the equilibrium block moving line on the first cylinder crank throw forearm, the second cylinder crank throw postbrachium, the 3rd cylinder crank throw forearm and the 4th cylinder crank throw postbrachium, therefore not only the rational deployment of original equilibrium block need not change, can give full play to the effect that it reduces the main bearing load and reduces the bent axle moment of resistance, and each oil nozzle all can produce good cooling action with the machine oil continuous injection to each corresponding piston head bottom.The refrigeration test of the piston head bottom being done with cooling unit of the present utility model shows, the equal energy of the oil spout of each nozzle continuous injection is to the bottom of piston head, when diesel load increases to 60KW, when rotating speed reached the high power of 8600r/min, high-revolving operating mode, piston ring groove and piston head bottom did not all have abnormal machine oil carbon deposit phenomenon and exist.Has good cooling effect, motor high loaded process reliably lastingly.
Load on the high-speed diesel fuel main bearing mainly is that the centrifugal force by connecting rod is caused.Since the crank throw of main bearing both sides, the 3rd road in the same way, the load and the heating value maximum that produce by centrifugal force; Next is the first and the 3rd road main bearing; And the crank throw direction of main bearing both sides, the second and the 4th road is opposite, the load that centrifugal force produces is cancelled out each other, so load minimum on the main bearing, its heating value is also minimum, the corresponding required oil flow rate of taking away heat is also minimum, therefore also the most reasonable by the machine oil of shunting cooling piston in the oil groove of second road, the 4th road main bearing seat, promptly on the second, the 4th road main bearing seat oil nozzle being set is the most rational combination, can be not therefore and the main bearing ability to work of complete machine is had a negative impact.
Below with reference to accompanying drawing structure of the present utility model is described in further detail.
Fig. 1 is four-cylinder diesel engine inner carrier, connecting rod, bent axle, equilibrium block and the main bearing seat broken section organigram when combining.
Fig. 2 is that diesel-engine body comprises the worm's eye view of each road bearing support when interior.
Fig. 3 is that four-cylinder diesel engine is removed the plan view of cylinder cap after with top.
Fig. 4 is along the organigram of analysing and observe of A-A line among Fig. 3.
Fig. 4 is along the organigram of analysing and observe of A-A line among Fig. 3.
Fig. 5 is along the organigram of analysing and observe of B-B line among Fig. 3.
Consult Fig. 1, Fig. 2, the first following cylinder crank throw forearm of first piston head is provided with equilibrium block 17, the second following cylinder crank throw postbrachium of second piston head is provided with equilibrium block 18, the three cylinder crank throw forearm of the 3rd piston head below 10 is provided with equilibrium block 19, the four cylinder crank throw postbrachium of the 4th piston head below 12 is provided with equilibrium block 20, first, the 3rd, be provided with oil inlet hole 1 in the 5th road main bearing seat, second, the 4th road main bearing seat is interior except that being provided with oil inlet hole 1, also be provided with the arc oil groove 4 that communicates with oil inlet hole 1, its radian (identical) with the main bearing seat radian, described arc oil groove two ends are respectively equipped with the nozzle that communicates with oil groove, and (for the second road main bearing seat is nozzle 5 and 7, for the 4th road main bearing seat is nozzle 9 and 11), described nozzle can adopt the nozzle with coaxial spray orifice.Consult Fig. 3, Fig. 3 represents that diesel engine removes cylinder cap and manifest after with top and be provided with first piston head 6, second piston head 8, the 3rd piston head 10 and the 4th piston head 12 in the cylinder body.Consult Fig. 4, the nozzle 5 of the oil groove end of the expression second road main bearing seat 2 embeds the structure situation of through hole 13 among Fig. 4, described through hole and nozzle are all towards the bottom of first piston head 6, and the oil spout route of nozzle 5 is not subjected to the influence of the first cylinder crank throw fore-arm equilibrium block, 17 motions; The nozzle 9 of the oil groove end of the 4th road main bearing seat 3 embeds through hole 15, and described through hole and nozzle are all towards the bottom of the 3rd piston head 10, and the oil spout route of nozzle 9 is not subjected to the influence of the 3rd cylinder crank throw fore-arm equilibrium block 19 motions.Consult Fig. 5, show among Fig. 5 that the nozzle 7 of the oil groove the other end of the second road main bearing seat 2 embeds through hole 14, described through hole and nozzle are towards the bottom of second piston head 8, and the oil spout route of nozzle 7 is not subjected to the influence of the second cylinder crank throw postbrachium place equilibrium block, 18 motions; The nozzle 11 of the other end of the oil groove of the 4th road main bearing seat 3 embeds through hole 16, and described through hole and nozzle are all towards the bottom of the 4th piston head 12, and the oil spout route of nozzle 11 is not subjected to the influence of the 4th cylinder crank throw postbrachium place equilibrium block 20 motions.
When the utility model four-cylinder diesel engine uses with piston cooling device, after machine oil is entered by the oil inlet hole 1 in the second, the 4th road main bearing seat, except that main bearing seat is cooled off, also respectively continuous oil spout cooling is carried out in the bottom of first piston head 6, second piston head 8, the 3rd piston head 10, the 4th piston head 12 through arc oil groove 4 and nozzle 5,7,9,11.
Claims (2)
1, a kind of four-cylinder diesel engine piston cooling device, comprise the second road main bearing seat (2) and the 4th road main bearing seat (3) of bringing oilhole (1) into, it is characterized in that the oil inlet hole lower end is provided with the arc oil groove (4) that communicates with oil inlet hole in described the second, the 4th road main bearing seat, described oil groove two ends are respectively equipped with the nozzle that communicates with oil groove, and the nozzle (5) in the described second road main bearing seat is towards the bottom of first piston head (6); Nozzle (7) is towards the bottom of second piston head (8), and the nozzle (9) in described the 4th road main bearing seat is towards the bottom of the 3rd piston head (10); Nozzle (11) is towards the bottom of the 4th piston head (12).
2, four-cylinder diesel engine piston cooling device according to claim 1, the oil groove two ends that it is characterized in that the described second road main bearing seat are drilled with respectively: the through hole (13) towards first piston head (6) bottom is embedded with the nozzle (5) that communicates with oil groove in the described through hole; Through hole (14) towards second piston head (8) bottom, be embedded with the nozzle (7) that communicates with oil groove in the described through hole, the oil groove two ends of described the 4th road main bearing seat are drilled with respectively: towards the through hole (15) of the 3rd piston head (10) bottom, described through hole is embedded with the nozzle (9) that communicates with the arc oil groove; Through hole (16) towards the 4th piston head (12) bottom is embedded with the nozzle (11) that communicates with the arc oil groove in the described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96211432 CN2272493Y (en) | 1996-05-22 | 1996-05-22 | Piston cooling device for four-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96211432 CN2272493Y (en) | 1996-05-22 | 1996-05-22 | Piston cooling device for four-cylinder diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2272493Y true CN2272493Y (en) | 1998-01-14 |
Family
ID=33894364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96211432 Expired - Lifetime CN2272493Y (en) | 1996-05-22 | 1996-05-22 | Piston cooling device for four-cylinder diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2272493Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404812C (en) * | 2001-07-04 | 2008-07-23 | 邦塔兹中心股份有限公司 | Piston cooling nozzle |
| CN103696842A (en) * | 2013-08-02 | 2014-04-02 | 浙江春风动力股份有限公司 | Motorcycle engine piston cooling system and motorcycle engine |
-
1996
- 1996-05-22 CN CN 96211432 patent/CN2272493Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404812C (en) * | 2001-07-04 | 2008-07-23 | 邦塔兹中心股份有限公司 | Piston cooling nozzle |
| CN103696842A (en) * | 2013-08-02 | 2014-04-02 | 浙江春风动力股份有限公司 | Motorcycle engine piston cooling system and motorcycle engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |