CN215860437U - Piston cooling nozzle - Google Patents
Piston cooling nozzle Download PDFInfo
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- CN215860437U CN215860437U CN202122201012.9U CN202122201012U CN215860437U CN 215860437 U CN215860437 U CN 215860437U CN 202122201012 U CN202122201012 U CN 202122201012U CN 215860437 U CN215860437 U CN 215860437U
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Abstract
The utility model discloses a piston cooling nozzle, comprising: the valve body is provided with an installation cavity, and an oil inlet channel, a first oil outlet channel and a second oil outlet channel which are respectively communicated with the installation cavity are arranged on the valve body; the spray pipe is arranged on the valve body and is provided with a first oil injection channel communicated with the first oil outlet channel and a second oil injection channel communicated with the second oil outlet channel; the elastic valve core assembly is arranged in the mounting cavity, and a valve core oil passage for communicating the oil inlet channel and the second oil outlet channel is arranged on the elastic valve core assembly; under the action of the engine oil pressure of the main oil duct, the elastic valve core assembly is matched with the valve body to enable the oil inlet channel to be communicated with the first oil outlet channel, and oil is injected into the first oil injection channel; or the oil inlet channel is communicated with the first oil outlet channel and the second oil outlet channel at the same time, so that the first oil injection channel and the second oil injection channel can inject oil at the same time. The piston cooling nozzle can ensure the flow and the oil injection effect of the piston cooling nozzle under different working conditions.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to a piston cooling nozzle.
Background
The piston cooling nozzle is used as an important part for cooling the piston in the inner cavity of the engine and reducing the heat load of the piston, and is widely applied to the engine.
With the increasing power and heat load of the engine, the requirement on the cooling capacity of the piston cooling nozzle is also higher, which requires that the flow rate of the piston cooling nozzle is changed along with the change of the engine load on the premise that the piston cooling nozzle can meet the targeting efficiency.
However, when the engine runs at low speed and low load, the requirement on the flow rate of the piston cooling nozzle is low due to low thermal load of the piston, and the structural parameters of the piston cooling nozzle are fixed, so that the flow rate of the piston cooling nozzle still maintains relatively high flow rate, the pressure loss of engine oil in a main oil gallery of the engine is caused, and the lubrication of key parts such as a crankshaft, a connecting rod and the like is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the piston cooling nozzle with the variable flow, and the piston cooling nozzle can ensure the flow and the oil injection effect of the piston cooling nozzle under different working conditions.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a piston cooling nozzle comprising: the valve body is provided with an installation cavity, and an oil inlet channel, a first oil outlet channel and a second oil outlet channel which are respectively communicated with the installation cavity are arranged on the valve body; the spray pipe is arranged on the valve body and is provided with a first oil injection channel communicated with the first oil outlet channel and a second oil injection channel communicated with the second oil outlet channel; the elastic valve core assembly is arranged in the mounting cavity, and a valve core oil passage for communicating the oil inlet channel and the second oil outlet channel is arranged on the elastic valve core assembly; under the action of the engine oil pressure of the main oil duct, the elastic valve core assembly is matched with the valve body to enable the oil inlet channel to be communicated with the first oil outlet channel, and oil is injected into the first oil injection channel; or the oil inlet channel is communicated with the first oil outlet channel and the second oil outlet channel at the same time, so that the first oil injection channel and the second oil injection channel can inject oil at the same time.
The valve body comprises a seat body and a valve body, wherein the seat body is provided with an axially extending accommodating groove, and a mounting hole is coaxially arranged in the accommodating groove; the valve body is detachably arranged in the accommodating groove, the valve body is provided with an axially extending mounting groove, and the mounting groove and the mounting hole form the mounting cavity.
Wherein, the oil feed passageway sets up on the valve body, the oil feed passageway is located in the mounting groove and with the coaxial setting of mounting groove runs through the valve body.
The seat body is provided with a first seat body oil duct communicated with the first oil injection channel and a second seat body oil duct communicated with the second oil injection channel; a first annular groove and a second annular groove are arranged on the outer wall of the valve body at intervals, the first annular groove and the seat body enclose a first oil storage cavity, and a first valve body oil hole which communicates the first oil storage cavity and the mounting groove is formed in the first annular groove; the second annular groove and the seat body form a second oil storage cavity in an enclosing mode, and a second valve body oil hole which is communicated with the second oil storage cavity and the mounting groove is formed in the second annular groove; the first valve body oil hole, the first oil storage cavity and the first base body oil passage form a first oil outlet channel; the second valve body oil hole, the second oil storage cavity and the second base oil passage form a second oil outlet channel.
Wherein the first valve body oil hole and the second valve body oil hole are radially disposed and penetrate the valve body.
The elastic valve core assembly comprises a valve core and an elastic piece, the valve core is arranged in the installation cavity in a sliding mode, and the elastic piece is located between the valve core and the seat body.
The valve core comprises an oil duct part and a connecting part which are connected together, the valve core oil duct is arranged on the oil duct part, and the elastic piece is sleeved on the connecting part.
The valve core oil passage comprises a first valve core oil hole and a second valve core oil hole which are communicated, the first valve core oil hole is communicated with the oil inlet channel, and the second valve core oil hole is communicated with the second valve body oil hole.
The second valve core oil hole is radially arranged and penetrates through the valve core, and the first valve core oil hole is perpendicular to the second valve core oil hole.
The spray pipe is provided with an interlayer, and the interlayer divides an inner cavity of the spray pipe into the first oil injection channel and the second oil injection channel.
By adopting the technical scheme, the utility model has the beneficial effects that:
according to the piston cooling nozzle provided by the utility model, when an engine runs at a low speed, the engine oil pressure of the main oil duct is relatively low, the heat load of the piston is also relatively low, and the elastic valve core assembly can be matched with the valve body to enable the oil inlet channel to be communicated with the first oil outlet channel, so that oil injection of the first oil injection channel is realized; when the engine runs at a high speed and a high load, the engine oil pressure of the main oil duct rises rapidly, the heat load of the piston is correspondingly increased, and under the action of higher engine oil pressure, the elastic valve core assembly can be matched with the valve body to enable the oil inlet channel to be communicated with the first oil outlet channel and the second oil outlet channel simultaneously, so that the first oil injection channel and the second oil injection channel can inject oil simultaneously.
When the engine runs at a low speed, the piston cooling nozzle only opens the first oil injection channel, so that the oil pressure of the main oil duct can be maintained at a relatively high level when the first oil injection channel is opened, and the better lubricating effect of key components such as a crankshaft, a connecting rod and the like is realized; when the engine runs at high speed and high load, the first oil injection channel and the second oil injection channel are opened simultaneously, and large-flow oil injection cooling of the piston is achieved.
Compared with the prior art, the opening pressures of the first oil injection channel and the second oil injection channel of the piston cooling nozzle are different, and the first oil injection channel and the second oil injection channel are respectively and sequentially opened along with the increase of the engine oil pressure of the main oil duct in the process of increasing the rotating speed of the engine, so that the flow and the oil injection effect of the piston cooling nozzle under different working conditions are ensured.
Drawings
FIG. 1 is a schematic view of a piston cooling nozzle according to the present invention with a first fuel injection passage open;
FIG. 2 is a schematic view of a piston cooling nozzle according to the present invention in which a first oil injection passage and a second oil injection passage are simultaneously opened;
in the figure: 1. a base body; 11. a first seat oil duct; 12. a second seat oil duct; 2. a valve body; 21. an oil inlet channel; 22. a first valve body oil hole; 23. a second valve body oil hole; 3. a mounting cavity; 4. a nozzle; 41. a first oil injection passage; 42. a second oil injection passage; 5. a locknut; 6. a first oil storage chamber; 7. a second oil storage chamber; 8. a valve core; 81. a first spool oil hole; 82. a second spool oil hole; 9. an elastic member; 10. and (6) plugging by screwing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown collectively in fig. 1 and 2, a piston cooling nozzle comprising: the valve body is provided with an installation cavity 3, and an oil inlet channel 21, a first oil outlet channel and a second oil outlet channel which are respectively communicated with the installation cavity 3 are arranged on the valve body; a nozzle 4 provided on the valve body, the nozzle 4 having a first oil discharge passage 41 communicating with the first oil discharge passage, and a second oil discharge passage 42 communicating with the second oil discharge passage; the elastic valve core assembly is arranged in the installation cavity 3, and a valve core oil passage for communicating the oil inlet channel 21 and the second oil outlet channel is arranged on the elastic valve core assembly.
Under the action of the engine oil pressure of the main oil duct, the elastic valve core assembly is matched with the valve body to enable the oil inlet channel 21 to be communicated with the first oil outlet channel, and oil injection of the first oil injection channel 41 is realized; or the oil inlet channel 21 is communicated with the first oil outlet channel and the second oil outlet channel at the same time, so that oil is injected from the first oil injection channel 41 and the second oil injection channel 42 at the same time.
Specifically, the valve body comprises a seat body 1 and a valve body 2, wherein the seat body 1 is provided with an axially extending accommodating groove, and a mounting hole is coaxially arranged in the accommodating groove; valve body 2 detachable sets up in the storage tank, and valve body 2 is provided with the mounting groove of axial extension, and the mounting groove constitutes installation cavity 3 with the mounting hole.
In order to improve the sealing performance between the valve body 2 and the seat body 1, the valve body 2 and the seat body 1 are preferably connected by threads in the embodiment; meanwhile, for enhancing the connection strength between the valve body 2 and the seat body 1, the locknut 5 is arranged at the position of the valve body 2 close to the notch of the accommodating groove in the embodiment, and the end face of the locknut 5 abuts against the end face of the seat body 1.
In the present embodiment, the seat body 1 is provided with the first seat body oil passage 11 communicating with the first oil injection passage 41, and the second seat body oil passage 12 communicating with the second oil injection passage 42.
A first annular groove and a second annular groove are arranged on the outer wall of the valve body 2 at intervals, the first annular groove and the seat body 1 enclose a first oil storage chamber 6, and a first valve body oil hole 22 which communicates the first oil storage chamber 6 and the mounting groove is arranged in the first annular groove; the second annular groove and the seat body 1 form a second oil storage cavity 7 in an enclosing mode, and a second valve body oil hole 23 which is communicated with the second oil storage cavity 7 and the mounting groove is formed in the second annular groove.
The first valve body oil hole 22, the first oil storage chamber 6 and the first seat body oil passage 11 form a first oil outlet passage; the second valve body oil hole 23, the second oil storage chamber 7, and the second seat body oil passage 12 constitute a second oil outlet passage.
In order to ensure the flow rate and the oil injection effect of the piston cooling nozzle, the first valve body oil hole 22 and the second valve body oil hole 23 in the present embodiment are both provided radially and penetrate the valve body 2.
In order to facilitate the maintenance and replacement of the elastic valve core assembly, in this embodiment, a maintenance opening communicated with the mounting hole is formed in the seat body 1, and the plug 10 is arranged in the maintenance opening, so that the elastic valve core assembly can be maintained or replaced by detaching the plug 10.
The elastic valve core assembly in this embodiment includes a valve core 8 and an elastic member 9, the valve core 8 is slidably disposed in the installation cavity 3, and the elastic member 9 is located between the valve core 8 and a plug 10 on the seat body 1.
Specifically, the valve element 8 includes an oil passage portion and a connecting portion connected together, the valve element oil passage is disposed on the oil passage portion, and the elastic member 9 is sleeved on the connecting portion.
The spool oil passage includes a first spool oil hole 81 and a second spool oil hole 82 that are communicated with each other, the first spool oil hole 81 is communicated with the oil inlet passage 21, and the second spool oil hole 82 is used for communicating with the second valve body oil hole 23.
In order to ensure the flow rate and the oil injection effect of the piston cooling nozzle, the second spool oil hole 82 in the present embodiment is radially disposed and penetrates the spool 8, and the first spool oil hole 81 is disposed perpendicular to the second spool oil hole 82.
The elastic member 9 in this embodiment is preferably a spring because of its good elastic return capability.
The partition layer is arranged in the spray pipe 4 in the embodiment, and divides the inner cavity of the spray pipe 4 into the independent first oil injection channel 41 and the independent second oil injection channel 42, so that the independent oil bundles are formed by adapting to different engine oil pressures, and the piston is cooled. Wherein, the outer wall of the spray pipe 4 is thicker than the interlayer to ensure the rigidity of the spray pipe 4.
In order to increase the flow rate of the oil jet at the outlet of the nozzle 4, the nozzle 4 in this embodiment is preferably a converging-diverging tube.
When the engine runs at a low speed, the engine oil pressure of the main oil duct is relatively low, the heat load of the piston is also relatively low, and the elastic valve core assembly is matched with the valve body 2 to enable the oil inlet channel 21 to be communicated with the first oil outlet channel, so that oil injection of the first oil injection channel 41 is realized; when the engine runs at a high speed and a high load, the oil pressure of the main oil gallery rises rapidly, the heat load of the piston is correspondingly increased, and under the action of higher oil pressure, the elastic valve core assembly can be matched with the valve body 2 to enable the oil inlet channel 21 to be communicated with the first oil outlet channel and the second oil outlet channel at the same time, so that oil can be injected into the first oil injection channel 41 and the second oil injection channel 42 at the same time.
When the engine runs at a low speed, the piston cooling nozzle only opens the first oil injection channel 41, so that the oil pressure of the main oil duct can be maintained at a relatively high level when the first oil injection channel 41 is opened, and the better lubricating effect of key components such as a crankshaft, a connecting rod and the like is realized; when the engine runs at high speed and high load, the first oil injection channel 41 and the second oil injection channel 42 are opened simultaneously, and large-flow oil injection cooling of the piston is realized.
The opening pressures of the first oil injection channel 41 and the second oil injection channel 42 of the piston cooling nozzle are different, and in the process of increasing the rotating speed of the engine, the first oil injection channel 41 and the second oil injection channel 42 are respectively opened in sequence along with the increase of the oil pressure of the main oil duct, so that the flow and the oil injection effect of the piston cooling nozzle under different working conditions are ensured.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without departing from the spirit and scope of the present invention.
Claims (10)
1. A piston cooling nozzle, comprising:
the valve body is provided with an installation cavity, and an oil inlet channel, a first oil outlet channel and a second oil outlet channel which are respectively communicated with the installation cavity are arranged on the valve body;
the spray pipe is arranged on the valve body and is provided with a first oil injection channel communicated with the first oil outlet channel and a second oil injection channel communicated with the second oil outlet channel;
the elastic valve core assembly is arranged in the mounting cavity, and a valve core oil passage for communicating the oil inlet channel and the second oil outlet channel is arranged on the elastic valve core assembly;
under the action of the engine oil pressure of the main oil duct, the elastic valve core assembly is matched with the valve body to enable the oil inlet channel to be communicated with the first oil outlet channel, and oil is injected into the first oil injection channel; or the oil inlet channel is communicated with the first oil outlet channel and the second oil outlet channel at the same time, so that the first oil injection channel and the second oil injection channel can inject oil at the same time.
2. The piston cooling nozzle of claim 1 wherein said valve body includes a seat body and a valve body, said seat body being provided with an axially extending receiving groove, said receiving groove being coaxially provided with a mounting hole therein; the valve body is detachably arranged in the accommodating groove, the valve body is provided with an axially extending mounting groove, and the mounting groove and the mounting hole form the mounting cavity.
3. The piston cooling nozzle of claim 2 wherein said oil feed passage is disposed in said valve body, said oil feed passage being disposed in said mounting slot and coaxially disposed with said mounting slot and extending through said valve body.
4. Piston cooling nozzle according to claim 2,
the seat body is provided with a first seat body oil duct communicated with the first oil injection channel and a second seat body oil duct communicated with the second oil injection channel;
a first annular groove and a second annular groove are arranged on the outer wall of the valve body at intervals, the first annular groove and the seat body enclose a first oil storage cavity, and a first valve body oil hole which communicates the first oil storage cavity and the mounting groove is formed in the first annular groove; the second annular groove and the seat body form a second oil storage cavity in an enclosing mode, and a second valve body oil hole which is communicated with the second oil storage cavity and the mounting groove is formed in the second annular groove;
the first valve body oil hole, the first oil storage cavity and the first base body oil passage form a first oil outlet channel; the second valve body oil hole, the second oil storage cavity and the second base oil passage form a second oil outlet channel.
5. The piston cooling nozzle of claim 4 wherein said first and second valve body oil bores are radially disposed and extend through said valve body.
6. The piston cooling nozzle of claim 2 wherein said resilient spool assembly includes a spool slidably disposed within said mounting cavity and a resilient member positioned between said spool and said seat.
7. The piston cooling nozzle as in claim 6, wherein said valve element includes an oil passage portion and a connecting portion connected together, said valve element oil passage being disposed on said oil passage portion, said elastic member being sleeved on said connecting portion.
8. The piston cooling nozzle as claimed in claim 7, wherein said spool oil passage includes a first spool oil hole and a second spool oil hole communicating with each other, said first spool oil hole communicating with said oil intake passage, said second spool oil hole for communicating with said second valve body oil hole.
9. The piston cooling nozzle as described in claim 8 wherein said second spool bore is disposed radially through said spool, said first spool bore being perpendicular to said second spool bore.
10. The piston cooling nozzle as in claim 1, wherein a barrier is disposed within said nozzle tube, said barrier separating an interior cavity of said nozzle tube into said first oil injection passage and said second oil injection passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122201012.9U CN215860437U (en) | 2021-09-11 | 2021-09-11 | Piston cooling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122201012.9U CN215860437U (en) | 2021-09-11 | 2021-09-11 | Piston cooling nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN215860437U true CN215860437U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122201012.9U Active CN215860437U (en) | 2021-09-11 | 2021-09-11 | Piston cooling nozzle |
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| CN (1) | CN215860437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592963A (en) * | 2022-03-17 | 2022-06-07 | 潍柴动力股份有限公司 | Piston cooling system monitoring method and device and engine |
-
2021
- 2021-09-11 CN CN202122201012.9U patent/CN215860437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592963A (en) * | 2022-03-17 | 2022-06-07 | 潍柴动力股份有限公司 | Piston cooling system monitoring method and device and engine |
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