CN204716375U - A kind of piston cooling nozzle - Google Patents

A kind of piston cooling nozzle Download PDF

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Publication number
CN204716375U
CN204716375U CN201520232516.9U CN201520232516U CN204716375U CN 204716375 U CN204716375 U CN 204716375U CN 201520232516 U CN201520232516 U CN 201520232516U CN 204716375 U CN204716375 U CN 204716375U
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CN
China
Prior art keywords
nozzle
valve
oil
cavity
piston
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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 - Fee Related
Application number
CN201520232516.9U
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Chinese (zh)
Inventor
张翱
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Wuxi Prestige Inspires Confidence In Schmidt's Power System Parts Co Ltd
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Wuxi Prestige Inspires Confidence In Schmidt's Power System Parts Co Ltd
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Priority to CN201520232516.9U priority Critical patent/CN204716375U/en
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Publication of CN204716375U publication Critical patent/CN204716375U/en
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Abstract

The utility model provides a kind of piston cooling nozzle, nozzle is nozzle A and nozzle B, control valve comprises valve body, spool and elastic member, valve body has oil inlet passage, oil discharge passage A, oil discharge passage B and cavity, oil inlet passage is communicated with main oil gallery, oil discharge passage A is communicated with nozzle A and cavity, and oil discharge passage B is communicated with nozzle B and cavity; Spool is two and is positioned at cavity side by side; Elastic member is between two spools and be connected with two spools, the first end of elastic member is for the adjacent port of cavity that first spool is pressed on oil inlet passage and valve body, and the second end of elastic member is used for the top end second spool being pressed on the cavity of valve body; Piston cooling device also comprises positioning device, and positioning device and control valve are electrically connected.Therefore, this piston cooling device adopts two nozzles to cool piston, improves cooling effectiveness, adopts positioning device, improves the accuracy that nozzle is sprayed onto piston base.

Description

A kind of piston cooling nozzle
Technical field
The utility model relates to automotive engine applications, especially a kind of cooling unit for engine piston.
Background technique
In existing motor, especially adopt in the motor of turbocharging technology, when high load works, the burning room temperature of motor is higher, thus piston is in the higher environment of temperature, sometimes even exceeds the resistance to extreme temperature of piston material.Therefore, to the cooling of piston, piston cooling device is designed with in order to realize within the engine.
Usually, this piston cooling device comprises nozzle, nozzle is communicated with the main oil gallery of motor, for by the usual machine oil stored by oil sump by the oil pump pump pressure in motor to nozzle, nozzle to be arranged in cylinder and to be positioned on the position under piston lower dead center and (can not produce with piston and interfere), this nozzle is towards the bottom of piston, and the piston base of indication refers to the part of piston towards connecting rod here, or the part be connected with connecting rod.
According to this traditional piston cooling device, operation due to oil pump is driven by the power of motor self, that is, as long as engine start gets up, oil pump will be run (oil pump is usually by bent axle Direct driver) under the driving of engine power, thus machine oil is pumped to nozzle from oil sump, high-pressure oil is sprayed onto in piston base by nozzle, to cool piston.
But in the operating mode that low engine speed is run, now the temperature of environment residing for piston is relatively not high, thus need not spray machine oil constantly to piston.As long as and traditional piston cooling device ato unit will spray machine oil constantly to piston, therefore when low engine speed is run, because the rotating speed of oil pump is also relatively low, the pressure of the machine oil in main oil gallery is also in reduced levels, if now piston cooling device continues to spray machine oil to piston, then can have a strong impact on the parts that other also needs to lubricate or cool under low engine speed state, as crankshaft main journal and main bearing, cam journal and camshaft bearing etc., thus affect lubrication or the cooling requirement of other parts of motor; Meanwhile, when high engine speeds is run, because the rotating speed of oil pump is higher, the pressure of the machine oil in main oil gallery is in higher level, if now only have a nozzle to spray machine oil to piston in piston cooling device, thorough not to piston cooling; Simultaneously to be sprayed onto piston base position inaccurate for nozzle.
Model utility content
The technical problems to be solved in the utility model overcomes existing defect, a kind of piston cooling nozzle is provided, can not affect on the normal lubrication of other parts in motor or the basis of cooling requirement when low engine speed is run, two nozzles are adopted to cool piston, improve cooling effectiveness, adopt positioning device, improve the accuracy that nozzle is sprayed onto piston base.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme:
A kind of piston cooling nozzle, comprise nozzle and control valve, nozzle is connected with main oil gallery by control valve, control valve is used for cutting off being communicated with of main oil gallery and nozzle at the pressure of main oil gallery inner engine oil lower than during predetermined value, being communicated with of main oil gallery and nozzle is kept when the pressure of main oil gallery inner engine oil is equal to or higher than predetermined value, nozzle is nozzle A and nozzle B, control valve comprises valve body, spool and elastic member, valve body has oil inlet passage, oil discharge passage A, oil discharge passage B and cavity, oil inlet passage is communicated with main oil gallery, oil discharge passage A is communicated with nozzle A and cavity, oil discharge passage B is communicated with nozzle B and cavity, spool is two and is positioned at cavity side by side, elastic member is between two spools and be connected with two spools, the first end of elastic member is for the adjacent port of cavity that first spool is pressed on oil inlet passage and valve body, and the second end of elastic member is used for the top end second spool being pressed on the cavity of valve body, piston cooling device also comprises positioning device, and positioning device and control valve are electrically connected.
Further, elastic member is spring.
Further, valve body is cylindrical, oil inlet passage extends to the cavity of valve body along the axial direction of valve body from a section of columniform valve body, oil discharge passage A and oil discharge passage B are mutually vertical and extend to the cavity of valve body along the radial direction of valve body from the outer peripheral surface of columniform valve body, piston cooling device also comprises connecting cylinder, perforate A through the circumferential side wall of connecting cylinder and the perforate B perpendicular to perforate A, one end of nozzle A is installed in perforate A, one end of nozzle B is installed in perforate B, connecting cylinder is sleeved on the external peripheral surface of columniform valve body, the oil discharge passage A of valve body, oil discharge passage B respectively with nozzle A, nozzle B is communicated with.
Further, piston cooling device also comprises two grooves, two grooves are positioned at the inner circumferential surface of connecting cylinder and are communicated with perforate A, perforate B respectively, and two grooves extend along axial, the radial direction of connecting cylinder respectively, and oil discharge passage A, oil discharge passage B communicate with two grooves respectively.
Further, positioning device be located at piston cooling device connecting cylinder on and radial direction along connecting cylinder arrange.
A kind of piston cooling nozzle of the utility model, can not affect on the normal lubrication of other parts in motor or the basis of cooling requirement when low engine speed is run, two nozzles are adopted to cool piston, improve cooling effectiveness, adopt positioning device, improve the accuracy that nozzle is sprayed onto piston base.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, does not form restriction of the present utility model with embodiment one of the present utility model.In the accompanying drawings:
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is the sectional view of piston cooling device of the present utility model;
Fig. 3 is the nozzle shown in Fig. 2 and connecting cylinder partial section.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
As Figure 1-3, a kind of piston cooling nozzle, comprise nozzle and control valve 2, nozzle is connected with main oil gallery by control valve 2, control valve 2 cuts off being communicated with of main oil gallery and nozzle for the pressure at main oil gallery inner engine oil lower than during predetermined value, being communicated with of main oil gallery and nozzle is kept when the pressure of main oil gallery inner engine oil is equal to or higher than predetermined value, nozzle is nozzle A11 and nozzle B 12, control valve 2 comprises valve body 21, spool 22 and elastic member 23, valve body 21 has oil inlet passage 211, oil discharge passage A212, oil discharge passage B213 and cavity 214, oil inlet passage 211 is communicated with main oil gallery, oil discharge passage A212 is communicated with nozzle A11 and cavity 214, oil discharge passage B213 is communicated with nozzle B 12 and cavity 214, spool 22 is two and is positioned at cavity 214 side by side, elastic member 23 is between two spools 22 and be connected with two spools 22, the first end of elastic member 23 is for being pressed on oil inlet passage 211 port adjacent with the cavity 214 of valve body 21 by first spool 22, the second end of elastic member 23 is used for the top end of the cavity 214 second spool 22 being pressed on valve body 21, piston cooling device also comprises positioning device 3, and positioning device 3 and control valve 2 are electrically connected.Elastic member 23 is spring.Valve body 21 is cylindrical, oil inlet passage 211 extends to the cavity 214 of valve body 21 along the axial direction of valve body 21 from a section of columniform valve body 21, oil discharge passage A212 and oil discharge passage B213 are mutually vertical and extend to the cavity 214 of valve body 21 along the radial direction of valve body 21 from the outer peripheral surface of columniform valve body 21, piston cooling device also comprises connecting cylinder 4, perforate A41 through the circumferential side wall of the connecting cylinder 4 and perforate B42 perpendicular to perforate A41, one end of nozzle A11 is installed in perforate A41, one end of nozzle B 12 is installed in perforate B42, connecting cylinder 4 is sleeved on the external peripheral surface of columniform valve body 21, the oil discharge passage A212 of valve body 21, oil discharge passage B213 respectively with nozzle A11, nozzle B 12 is communicated with.Piston cooling device also comprises two grooves, two grooves are positioned at the inner circumferential surface of connecting cylinder 4 and are communicated with perforate A41, perforate B42 respectively, two grooves extend along axial, the radial direction of connecting cylinder 4 respectively, and oil discharge passage A212, oil discharge passage B213 communicate with two grooves respectively.Radial direction on the connecting cylinder 4 that piston cooling device is located at by positioning device 3 and along connecting cylinder 4 is arranged.
Main oil gallery (not shown) is the important component part of lubricating system in motor, usually directly to cast out on cylinder block and cylinder cover, be used for each lubricant housings conveying lubricant oil, in motor, the structure of main oil gallery, setting and function are conventionally known to one of skill in the art.
When the engine is running, the oil pump in engine lubrication system rotates under the driving of bent axle (or camshaft), thus the oil pump stored in oil sump is pressed onto in main oil gallery.Therefore, the pressure of main oil gallery inner engine oil is relevant to the rotating speed of motor with flow, and specifically, the rotating speed of motor is higher, then the pressure of main oil gallery inner engine oil and flow also larger; The rotating speed of motor is lower, then the pressure of main oil gallery inner engine oil and flow also less.
Nozzle A11, nozzle B 12 are connected with main oil gallery by control valve 2, and this control valve 2 is for Control Nozzle A11, switching on and off between nozzle B 12 and main oil gallery.
Specifically, when the pressure of main oil gallery inner engine oil is lower than predetermined value, control valve 2 cuts off main oil gallery and nozzle A11, being communicated with of nozzle B 12.When the pressure of main oil gallery inner engine oil is lower than predetermined value, when namely motor is in low-speed run state, now, piston does not need cooling, by cutting off main oil gallery and nozzle A11, being communicated with of nozzle B 12, the needs of the lubrication and cooling of other parts in motor can be guaranteed.
When the pressure of main oil gallery inner engine oil is equal to or higher than predetermined value, control valve 2 keeps main oil gallery and nozzle A11, being communicated with of nozzle B 12, thus allows the machine oil in main oil gallery to enter nozzle A11, nozzle B 12, sprays to piston with cooling piston.Now, motor is in relatively high-revolving working state, in this condition, the pressure of the machine oil in main oil gallery is higher, thus main oil gallery and nozzle A11, the communicating of nozzle B 12 is allowed, the cooling to piston can be realized, also can not affect the lubrication of other parts or the needs of cooling in motor.
Usually, when the rotating speed that the rotating ratio of motor produces Maximum Torque is slightly low, just need to start to cool piston, therefore, piston can be needed the minimum speed of cooling to be called piston cooling critical speed of rotation (usually, this piston cooling critical speed of rotation is slightly lower than the rotating speed producing Maximum Torque).That is, when the rotating speed of motor is lower than piston cooling critical speed of rotation, do not need to cool piston; And when motor is equal to or higher than piston cooling critical speed of rotation, need to cool piston.
Therefore, according to the rotating speed of motor, usually critical speed of rotation to be cooled with above-mentioned piston corresponding to the selection of predetermined value.Preferably, the pressure of this predetermined value is the rotating speed of motor when being 1600 revs/min to 2100 revs/min (namely piston cooling critical speed of rotation is 1600 revs/min to 2100 revs/min) main oil gallery inner engine oil.Further preferably, the pressure of predetermined value is the rotating speed of motor when being 2000 revs/min main oil gallery inner engine oil.
Relative to traditional piston cooling device, the utility model is mainly to be provided with nozzle and positioning device 3 to improvements, nozzle is provided with two, when high engine speeds is run, because the rotating speed of oil pump is higher, the pressure of the machine oil in main oil gallery is in higher level, is now provided with two nozzles in piston cooling device and sprays machine oil to piston base, piston can be made to cool rapidly, improve cooling effectiveness; In order to be convenient to location when being installed on the engine by piston cooling device, connecting cylinder 4 is also provided with positioning device 3, and, utilize this positioning device 3, can ensure that the direction of two nozzles keeps correct, thus can exactly by oil injection in piston base, can also the degrees of freedom of limited piston cooling unit (being specially connecting cylinder 4), improve the validity of oil injection.
A kind of piston cooling nozzle of the utility model, can not affect on the normal lubrication of other parts in motor or the basis of cooling requirement when low engine speed is run, two nozzles are adopted to cool piston, improve cooling effectiveness, adopt positioning device 3, improve nozzle and be sprayed onto the accuracy of piston base and the validity of oil injection.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (5)

1. a piston cooling nozzle, comprise nozzle and control valve, described nozzle is connected with main oil gallery by described control valve, described control valve is used for pressure at described main oil gallery inner engine oil lower than cutting off being communicated with of described main oil gallery and nozzle during predetermined value, being communicated with of described main oil gallery and nozzle is kept when the pressure of main oil gallery inner engine oil is equal to or higher than described predetermined value, it is characterized in that: described nozzle is nozzle A and nozzle B, described control valve comprises valve body, spool and elastic member, described valve body has oil inlet passage, oil discharge passage A, oil discharge passage B and cavity, described oil inlet passage is communicated with described main oil gallery, described oil discharge passage A is communicated with described nozzle A and described cavity, described oil discharge passage B is communicated with described nozzle B and described cavity, described spool is two and is positioned at described cavity side by side, described elastic member is between two described spools and be connected with two described spools, the first end of described elastic member is for the adjacent port of cavity that first described spool is pressed on described oil inlet passage and described valve body, and the second end of described elastic member is used for the top end second described spool being pressed on the cavity of described valve body, described piston cooling device also comprises positioning device, and described positioning device and described control valve are electrically connected.
2. a kind of piston cooling nozzle according to claim 1, is characterized in that: described elastic member is spring.
3. according to a kind of piston cooling nozzle in claim 1-2 described in any one, it is characterized in that: described valve body is cylindrical, described oil inlet passage extends to the cavity of described valve body along the axial direction of described valve body from a section of described columniform valve body, described oil discharge passage A and oil discharge passage B are mutually vertical and extend to the cavity of described valve body along the radial direction of described valve body from the outer peripheral surface of described columniform valve body, described piston cooling device also comprises connecting cylinder, through the perforate A of the circumferential side wall of described connecting cylinder and the perforate B perpendicular to described perforate A, one end of described nozzle A is installed in described perforate A, one end of described nozzle B is installed in described perforate B, described connecting cylinder is sleeved on the external peripheral surface of described columniform valve body, the oil discharge passage A of described valve body, oil discharge passage B respectively with described nozzle A, nozzle B is communicated with.
4. a kind of piston cooling nozzle according to claim 3, it is characterized in that: described piston cooling device also comprises two grooves, two described grooves are positioned at the inner circumferential surface of described connecting cylinder and are communicated with described perforate A, perforate B respectively, two described grooves extend along axial, the radial direction of described connecting cylinder respectively, and described oil discharge passage A, oil discharge passage B communicate with two described grooves respectively.
5. a kind of piston cooling nozzle according to claim 1, is characterized in that: the radial direction on the connecting cylinder that described piston cooling device is located at by described positioning device and along connecting cylinder is arranged.
CN201520232516.9U 2015-04-17 2015-04-17 A kind of piston cooling nozzle Expired - Fee Related CN204716375U (en)

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Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221231A (en) * 2015-11-05 2016-01-06 重庆驰龙摩托车配件有限公司 A kind of motorcycle twin cylinder engine piston cooling device
CN105370371A (en) * 2015-12-10 2016-03-02 广西玉柴机器股份有限公司 Cooling nozzle assembly of piston with valve
CN105545443A (en) * 2015-12-31 2016-05-04 潍柴动力扬州柴油机有限责任公司 Piston cooling nozzle
CN106285895A (en) * 2016-08-29 2017-01-04 潍柴动力股份有限公司 A kind of electromotor and piston cooling nozzle assembly
CN106762080A (en) * 2016-12-20 2017-05-31 南京世界村汽车动力有限公司 Internal combustion engine cooling nozzle structure
CN111911276A (en) * 2020-09-15 2020-11-10 安徽江淮汽车集团股份有限公司 Piston cooling nozzle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221231A (en) * 2015-11-05 2016-01-06 重庆驰龙摩托车配件有限公司 A kind of motorcycle twin cylinder engine piston cooling device
CN105370371A (en) * 2015-12-10 2016-03-02 广西玉柴机器股份有限公司 Cooling nozzle assembly of piston with valve
CN105545443A (en) * 2015-12-31 2016-05-04 潍柴动力扬州柴油机有限责任公司 Piston cooling nozzle
CN106285895A (en) * 2016-08-29 2017-01-04 潍柴动力股份有限公司 A kind of electromotor and piston cooling nozzle assembly
CN106762080A (en) * 2016-12-20 2017-05-31 南京世界村汽车动力有限公司 Internal combustion engine cooling nozzle structure
CN111911276A (en) * 2020-09-15 2020-11-10 安徽江淮汽车集团股份有限公司 Piston cooling nozzle

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151021

Termination date: 20200417