CN201546796U - Piston cooling device - Google Patents
Piston cooling device Download PDFInfo
- Publication number
- CN201546796U CN201546796U CN2009202466674U CN200920246667U CN201546796U CN 201546796 U CN201546796 U CN 201546796U CN 2009202466674 U CN2009202466674 U CN 2009202466674U CN 200920246667 U CN200920246667 U CN 200920246667U CN 201546796 U CN201546796 U CN 201546796U
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- valve body
- cooling device
- nozzle
- piston cooling
- oil
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Abstract
The utility model provides a piston cooling device which comprises a nozzle and further comprises a control valve, wherein the nozzle is connected with a main oil passage through the control valve, and the control valve is used for cutting off the connection of the main oil passage and the nozzle when the pressure of the machine oil inside the main oil passage is lower than a predetermined value and maintaining the connection of the main oil passage and the nozzle when the pressure of the machine oil inside the main oil passage is equal to or greater than the predetermined value. With the arrangement of the control valve in the piston cooling device, when the pressure of the machine oil inside the main oil passage is lower than the predetermined value, the machine oil is not injected to the piston through the nozzle, thereby ensuring that only when the pressure of the machine oil inside the main oil passage is equal to or greater than the predetermined value, the nozzle is allowed to inject the machine oil to the piston, and at this time the pressure of the machine oil inside the main oil passage is at the higher level, so that the machine oil injected to the piston through the nozzle doesn't influence the lubrication and cooling of other components.
Description
Technical field
The utility model relates to the motor car engine field, more particularly, relates to a kind of cooling unit that is used for engine piston.
Background technique
In existing motor, especially adopt in the motor of turbocharging technology, when high load was worked, the burning room temperature of motor was higher, thereby piston is in the higher environment of temperature, sometimes even exceed the resistance to extreme temperature of piston material.Therefore, in order to realize the cooling to piston, design has piston cooling device in motor.
Usually, this piston cooling device comprises nozzle, nozzle is communicated with the main oil gallery of motor, the machine oil that is used for being stored by oil sump is usually given nozzle by the oil pump pump pressure of motor, nozzle is arranged in the cylinder and is positioned on the position under the piston lower dead center (can not produce with piston and interfere), this nozzle is towards the bottom of piston, and the bottom of the piston of indication is meant the part of piston towards connecting rod here, or the part that is connected with connecting rod.
According to this traditional piston cooling device, because being the power by motor self, the operation of oil pump drives, that is to say, as long as engine start gets up, oil pump will be moved (oil pump is directly driven by bent axle usually) under the driving of engine power, thereby machine oil is pumped to nozzle from oil sump, high-pressure oil is sprayed onto on the piston base by nozzle, so that piston is cooled off.
Yet in the operating mode of low engine speed operation, the temperature of piston this moment environment of living in is not high relatively, thereby need not spray machine oil constantly to piston.And traditional piston cooling device is as long as ato unit will spray machine oil constantly to piston, therefore when low engine speed is moved, because the rotating speed of oil pump is also relatively low, the pressure of the machine oil in the main oil gallery also is in reduced levels, if this moment, piston cooling device continued piston is sprayed machine oil, then can have a strong impact on other and under the low engine speed state, also need parts lubricated or cooling, as crankshaft main journal and main bearing, cam journal and camshaft bearing etc., thereby influence the lubricated or cooling requirement of other parts of motor.
The model utility content
The purpose of this utility model is to overcome traditional piston cooling device can influence the normal lubricated of other parts in the motor or defective that cooling requires when low engine speed is moved, and a kind of piston cooling device that can not influence the normal lubricated or cooling requirement of other parts in the motor when low engine speed move is provided.
According to an aspect of the present utility model, a kind of piston cooling device is provided, this piston cooling device comprises oil pump and the nozzle that is communicated with this oil pump, wherein, described piston cooling device also comprises control valve, described oil pump is connected with described nozzle by this control valve, described control valve is used for cutting off being communicated with of described oil pump and nozzle when the pressure from the cold oil of described oil pump is lower than predetermined value, keep being communicated with of described oil pump and nozzle when the pressure from the cold oil of described oil pump is equal to or higher than described predetermined value.
According to piston cooling device provided by the utility model, owing in this piston cooling device, be provided with control valve, (this moment, piston did not need cooling) can not spray machine oil to piston by nozzle, thereby can guarantee when the pressure of machine oil in the main oil gallery is lower than predetermined value; Have only when the pressure of machine oil in the main oil gallery is equal to or higher than predetermined value (this moment, piston needed cooling), just can allow nozzle that piston is sprayed machine oil, and at this moment because the pressure of main oil gallery inner engine oil is in higher relatively level, thereby nozzle can not influence other parts to requirement lubricated and cooling to piston injection machine oil.
Description of drawings
Fig. 1 is the sectional view according to the piston cooling device of the utility model preferred implementation;
Fig. 2 is the sectional view of the control valve shown in Fig. 1; With
Fig. 3 is nozzle shown in Fig. 1 and connecting cylinder partial section.
Embodiment
Below with reference to accompanying drawing embodiment of the present utility model is described in detail.
As shown in Figure 1, piston cooling device provided by the utility model comprises nozzle 1, wherein, described piston cooling device also comprises control valve 2, described nozzle 1 is connected with described main oil gallery by described control valve 2, described control valve 2 is used for cutting off being communicated with of described main oil gallery and nozzle 1 when the pressure of described main oil gallery inner engine oil is lower than predetermined value, keep being communicated with of described main oil gallery and nozzle 1 when the pressure of described main oil gallery inner engine oil is equal to or higher than described predetermined value.
The main oil gallery (not shown) is the important component part of lubricating system in the motor, directly casts out on cylinder body and cylinder cap usually, is used for carrying lubricant oil to each lubricant housings, and the structure of main oil gallery, setting and function are conventionally known to one of skill in the art in the motor.
When motor moved, the oil pump in the engine lubrication system was rotated under the driving of bent axle (or camshaft), thereby the oil pump that stores in the oil sump is pressed onto in the main oil gallery.Therefore, the pressure of main oil gallery inner engine oil is relevant with the rotating speed of motor with flow, and specifically, the rotating speed of motor is high more, and then the pressure of main oil gallery inner engine oil and flow are also big more; The rotating speed of motor is low more, and then the pressure of main oil gallery inner engine oil and flow are also more little.
Specifically, when the pressure of described main oil gallery inner engine oil was lower than predetermined value, the described main oil gallery of control valve 2 cut-outs was communicated with nozzle 1.When the pressure of main oil gallery inner engine oil was lower than predetermined value, when just motor was in the low cruise state, at this moment, piston did not need cooling, by cutting off being communicated with of main oil gallery and nozzle 1, can guarantee the lubricated of other parts in the motor and the needs that cool off.
When the pressure of described main oil gallery inner engine oil was equal to or higher than described predetermined value, the described main oil gallery of control valve 2 maintenances was communicated with nozzle 1, thereby allows the machine oil in the main oil gallery to enter nozzle 1, sprays with cooling piston to piston.At this moment, motor is in the working state of relative higher rotation speed, under this state, the pressure of the machine oil in the main oil gallery is higher, thereby allow communicating of main oil gallery and nozzle 1, can realize cooling, the needs that also can not influence the lubricated of other parts in the motor or cool off to piston.
Usually, produce the rotating speed of Maximum Torque when low slightly at the rotating ratio of motor, just need begin piston is cooled off, therefore, the minimum speed that piston need cool off can be called piston cooling critical speed of rotation (usually, this piston cooling critical speed of rotation is lower than the rotating speed that produces Maximum Torque slightly).That is to say, when the rotating speed of motor is lower than piston cooling critical speed of rotation, do not need piston is cooled off; And when motor is equal to or higher than piston cooling critical speed of rotation, need cool off piston.
Therefore, will be to the selection of predetermined value according to the rotating speed of motor, common and above-mentioned piston cooling critical speed of rotation is corresponding.Preferably, this predetermined value is that the rotating speed of motor is the pressure of (being that piston cooling critical speed of rotation is 1600 rev/mins to 2100 rev/mins) main oil gallery inner engine oil under 1600 rev/mins to 2100 rev/mins the situation.The pressure of main oil gallery inner engine oil when further preferably, the described predetermined value rotating speed that is motor is 2000 rev/mins.
With respect to traditional piston cooling device, the utility model mainly is to be provided with control valve 2 to improvements.About the position of nozzle 1, structure with towards the correlation technique contents such as angle of piston, can be selected with reference to existing piston cooling device.Describe in detail with regard to control valve 2 below.
As depicted in figs. 1 and 2, according to a kind of mode of execution, described control valve 2 comprises: valve body 3, and this valve body 3 has oil inlet passage 5, oil discharge passage 6 and cavity 7, and described oil inlet passage 5 is communicated with main oil gallery, and described oil discharge passage 6 is communicated with described nozzle 1 and cavity 7; Spool 4, this spool 4 is positioned at the cavity 7 of described valve body 3; With elastic component 8, this elastic component 8 is positioned at described cavity 7 and is connected with described spool 4, and described elastic component 8 is used for described spool 4 is pressed on the adjacent port 9 of cavity 7 of described oil inlet passage 5 and described valve body 3.
According to control valve illustrated in figures 1 and 22, spool 4 is being pressed under the effect of the elastic force of elastic component 8 on the adjacent port 9 of oil inlet passage 6 and cavity 7, thereby with these port 9 sealings.The size of cavity 7 is greater than the size of port 9, thereby makes port 9 be shoulder hole, so that carrying elastic component 8.
Because the existence of the elastic force of elastic component 8 when low engine speed is rotated, because the oil delivery in the main oil gallery arrives oil inlet passage 6, and arrives above-mentioned port 9.Because this moment, engine speed was not high, thereby the pressure that arrives the machine oil of port 9 is lower than described predetermined value, thereby machine oil can't overcome the elastic force of elastic component 9 and enters in the cavity 7 of control valve 2.That is to say that this moment, control valve 2 disconnected being communicated with between main oil gallerys and the nozzle 1.
And when high engine speeds was moved, then the pressure from the machine oil of main oil gallery met or exceeded described predetermined value, thereby machine oil can overcome the elastic force of elastic component and spool 4 is backed down, thereby realized being communicated with between main oil gallery and the nozzle 1.
By above description as can be known, can have different elastic forces, can select the size of different predetermined values by selecting elastic component 8.
Spool 4 is used for getting lodged in port 9 in the effect lower seal of the elastic force of elastic component 8.Spool 4 can be preferably sphere for cylindricality or sphere, to obtain the better seal effect.More preferably, spool 4 can be made by elastic material, as rubber.
Preferably, described control valve 2 also comprises supporter 10, and described valve body 3 also has mounting hole 11, and described supporter 10 is removably mounted in the mounting hole 11 of described valve body 3, one end of described elastic component 8 contacts with the internal surface of described supporter 10, and the other end contacts with described spool 4.
Because supporter 10 is removably mounted in the mounting hole 11 of valve body 3, and elastic component 8 compressed, thereby, can the cavity of valve body 3 inside be cleaned by supporter 10 is disassembled, and can the parts of cavity inside be changed as elastic component 8 or spool 4.
Preferably, described control valve 2 also comprises supporting post 12, and this supporting post 12 is fixedlyed connected with supporter 10 and this supporting post 12 protrudes in described supporter 10 towards the surface of cavity 7, and described elastic component 8 is a spring, and an end of this spring is enclosed within on the described supporting post 12.
For spring as elastic component 8, by the supporting post on the internal surface that is positioned at supporter 10 12, can play support effect preferably to spring, thereby guarantee that spring can be pressed on spool 4 on the described port 9 effectively, to realize the effect of control valve 2.
Preferably, the length of described supporting post 12 is less than the distance of described supporter 10 between the central axis of the surface of cavity 7 and described oil discharge passage 6, thereby the existence of avoiding supporting post 12 is to the adverse effect of machine oil by the flow of oil discharge passage 6.
Preferably, described supporter 10 is for having externally threaded cylindrical body, and described mounting hole 11 is a tapped hole, and described cylindrical body is tightened against in the described tapped hole.Therefore, by this screw-thread fit, can realize adjustment, thereby can adjust the size of the impacting force of 8 pairs of spools 4 of elastic component, thereby can make this control valve can be adapted to the predetermined value that varies in size of machine oil relative position between supporter 10 and the valve body 3.
Preferably, as shown in Figures 2 and 3, described valve body 3 is cylindrical, described oil inlet passage 5 extends to the cavity 7 of described valve body 3 from an end face of described columniform valve body 3 along the axial direction of valve body 3, described oil discharge passage 6 extends to the cavity 7 of described valve body 3 from the outer peripheral surface of described columniform valve body 3 along the radial direction of valve body 3, described piston cooling device also comprises connecting cylinder 13 and passes the perforate 14 of the circumferential side wall of this connecting cylinder 13 (radial direction along connecting cylinder 13 is extended), one end of described nozzle 1 is installed in this perforate 14, described connecting cylinder 13 is sleeved on the external peripheral surface of described columniform valve body 3, and the oil discharge passage 6 of described valve body 3 is connected with described nozzle 1.
Preferably, described piston cooling device also comprises groove, and described groove is positioned at the inner circumferential surface of described connecting cylinder 13 and is communicated with described perforate 14, and described groove extends along the circumferencial direction of described connecting cylinder 13, and described oil discharge passage 6 communicates with described groove.
According to the piston cooling device of this structure, after valve body 3 is installed to connecting cylinder 13,, just can realize and being communicated with of nozzle 1 as long as the oil discharge passage 6 of valve body 3 can communicate with groove.Thereby, can reduce the assembling difficulty between valve body 3 and the connecting cylinder 13.
In addition, in order when being installed in described piston cooling device on the motor, to be convenient to the location, on connecting cylinder 13, also be provided with locating stud 15.And, utilize this locating stud, can guarantee that the direction of nozzle keeps correct, thereby can be exactly with oil injection on piston base, can also limit the degrees of freedom of described piston cooling device (being specially connecting cylinder 13).
Locating stud 15 can be connected with connecting cylinder 13 in several ways, for example, as shown in Figure 3, locating stud 15 can be connected with connecting cylinder 13 by substrate 16, substrate 16 can be integrally formed with connecting cylinder 13, can be the separate part that is fixed together with connecting cylinder 13 also.Can be selected according to concrete application about being provided with of locating stud 15.
Except the application cylinder of mode of execution illustrated in figures 1 and 2, control valve also can have other mode of execution.For example, control valve can also can comprise sensor and controller for solenoid valve commonly used in the hydraulic system.Sensor is electrically connected with controller, and sensor is from the pressure of the machine oil of main oil gallery, and the electrical signal of detected engine oil pressure is sent to controller.Controller is electrically connected with solenoid valve, be used for according to sensor to being switched on or switched off of electrical signal control electromagnetic valve of engine oil pressure.
More than described according to embodiment of the present utility model, but the utility model is not limited to this, under the prerequisite that does not break away from scope of the present utility model, those of ordinary skills can make any change, interpolation or modification.And, can be implemented in the mode of separately any and/or combination about the feature of front end trim panel.
Claims (7)
1. piston cooling device, this piston cooling device comprises nozzle (1), it is characterized in that, described piston cooling device also comprises control valve (2), described nozzle (1) is connected with main oil gallery by described control valve (2), described control valve (2) is used for cutting off being communicated with of described main oil gallery and nozzle (1) when the pressure of described main oil gallery inner engine oil is lower than predetermined value, keep being communicated with of described main oil gallery and nozzle (1) when the pressure of described main oil gallery inner engine oil is equal to or higher than described predetermined value.
2. piston cooling device according to claim 1 is characterized in that, described control valve (2) comprising:
Valve body (3), this valve body (3) have oil inlet passage (5), oil discharge passage (6) and cavity (7), and described oil inlet passage (5) is communicated with described main oil gallery, and described oil discharge passage (6) is communicated with described nozzle (1) and cavity (7);
Spool (4), this spool (4) is positioned at described cavity (7); With
Elastic component (8), this elastic component (8) is positioned at described cavity (7) and is connected with described spool (4), and described elastic component (8) is used for described spool (4) is pressed on the adjacent port (9) of cavity (7) of described oil inlet passage (5) and described valve body (3).
3. piston cooling device according to claim 2, it is characterized in that, described control valve (2) also comprises supporter (10), described valve body (3) also has mounting hole (11), described supporter (10) is removably mounted in the mounting hole (11) of described valve body (3), one end of described elastic component (8) contacts with the internal surface of described supporter (10), and the other end contacts with described spool (4).
4. piston cooling device according to claim 3 is characterized in that, described supporter (10) is for having externally threaded cylindrical body, and described mounting hole (11) is a tapped hole, and described cylindrical body is tightened against in the described tapped hole.
5. piston cooling device according to claim 3, it is characterized in that, described control valve (2) also comprises supporting post (12), this supporting post (12) is fixedlyed connected with supporter (10) and is protruded in the surface of described supporter (10) towards cavity (7), described elastic component (8) is a spring, and an end of this spring is enclosed within on the described supporting post (12).
6. according to any described piston cooling device among the claim 2-5, it is characterized in that, described valve body (3) is cylindrical, described oil inlet passage (5) extends to the cavity (7) of described valve body (3) from an end face of described columniform valve body (3) along the axial direction of this valve body, described oil discharge passage (6) extends to the cavity (7) of described valve body (3) from the outer peripheral surface of described columniform valve body (3) along the radial direction of this valve body, the perforate (14) that described piston cooling device also comprises connecting cylinder (13) and passes the circumferential side wall of this connecting cylinder (13), one end of described nozzle (1) is installed in this perforate (14), described connecting cylinder (13) is sleeved on the external peripheral surface of described columniform valve body (3), and the oil discharge passage (6) of described valve body (3) is connected with described nozzle (1).
7. piston cooling device according to claim 6, it is characterized in that, described piston cooling device also comprises groove, described groove is positioned at the inner circumferential surface of described connecting cylinder (13) and is communicated with described perforate (14), described groove extends along the circumferencial direction of described connecting cylinder (13), and described oil discharge passage (6) communicates with described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202466674U CN201546796U (en) | 2009-10-23 | 2009-10-23 | Piston cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202466674U CN201546796U (en) | 2009-10-23 | 2009-10-23 | Piston cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546796U true CN201546796U (en) | 2010-08-11 |
Family
ID=42601966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202466674U Expired - Fee Related CN201546796U (en) | 2009-10-23 | 2009-10-23 | Piston cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546796U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758676A (en) * | 2012-08-02 | 2012-10-31 | 三一重工股份有限公司 | Engine piston cooling nozzle, engine and engineering machinery |
| 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 |
| CN104533588A (en) * | 2014-12-26 | 2015-04-22 | 山东华源莱动内燃机有限公司 | Piston cooling nozzle |
| CN105370372A (en) * | 2015-12-14 | 2016-03-02 | 中国北方发动机研究所(天津) | Machine oil injection device |
| CN105736112A (en) * | 2016-02-05 | 2016-07-06 | 重庆科克发动机技术有限公司 | Engine cooling lubricating oil nozzle |
| CN105952560A (en) * | 2016-06-16 | 2016-09-21 | 上汽通用汽车有限公司 | Internal combustion engine |
-
2009
- 2009-10-23 CN CN2009202466674U patent/CN201546796U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758676A (en) * | 2012-08-02 | 2012-10-31 | 三一重工股份有限公司 | Engine piston cooling nozzle, engine and engineering machinery |
| 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 |
| CN104533588A (en) * | 2014-12-26 | 2015-04-22 | 山东华源莱动内燃机有限公司 | Piston cooling nozzle |
| CN105370372A (en) * | 2015-12-14 | 2016-03-02 | 中国北方发动机研究所(天津) | Machine oil injection device |
| CN105736112A (en) * | 2016-02-05 | 2016-07-06 | 重庆科克发动机技术有限公司 | Engine cooling lubricating oil nozzle |
| CN105952560A (en) * | 2016-06-16 | 2016-09-21 | 上汽通用汽车有限公司 | Internal combustion engine |
| CN105952560B (en) * | 2016-06-16 | 2019-09-10 | 上汽通用汽车有限公司 | A kind of internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Foton Environmental Engine Co., Ltd. Assignor: Beiqi Futian Automobile Co., Ltd. Contract record no.: 2011110000089 Denomination of utility model: Piston cooling device Granted publication date: 20100811 License type: Exclusive License Record date: 20110712 |
|
| 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: 20100811 Termination date: 20181023 |