CN102966408A - Piston-type engine oil pressure-limiting valve device - Google Patents
Piston-type engine oil pressure-limiting valve device Download PDFInfo
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- CN102966408A CN102966408A CN201210435139XA CN201210435139A CN102966408A CN 102966408 A CN102966408 A CN 102966408A CN 201210435139X A CN201210435139X A CN 201210435139XA CN 201210435139 A CN201210435139 A CN 201210435139A CN 102966408 A CN102966408 A CN 102966408A
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- pressure
- oil
- engine oil
- oil pump
- limiting valve
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a piston-type engine oil pressure-limiting valve device, which relates to the technical field of the engines. The piston-type engine oil pressure-limiting valve device comprises an engine oil pump installed together with the an engine, wherein an installation space is formed on the pump shell of the engine oil pump; a plug screw plug is in screw joint to the upper part of the installation space; one end of a pressure-limiting spring is pressed on the screw plug; the other end of the pressure-limiting spring is pressed on the valve plug of a pressure-limiting valve; the valve plug of the pressure-limiting valve consists of a pressure bearing part and a cap part; the pressure bearing part extends into the high-pressure chamber of the engine oil pump on the oil outlet of the engine oil pump; one end of an oil drainage channel is communicated and connected with the installation space; and the other end of the oil drainage channel is communicated and connected with a storage machine oil tank of the engine oil pump. The piston-type engine oil pressure-limiting valve device is free from leaking oil in advance, the phenomena of low engine oil pressure of the engine and dry grinding on the surface of a friction pair can be avoided, and the engine reliability is good.
Description
Technical field:
The present invention relates to technical field of engines, the pressure-limit valve device of the oil pump that is installed together more specifically to a kind of and motor.
Background technique:
The effect of oil pump is to make the engine oil pressure rising and guarantee certain oil pressure, forces fuel feeding to each friction surface of motor, and each friction pair of motor is lubricated reliably.When design, choosing often a little more than motor main oil gallery demand of oil pump capacity, its flow and oil pressure increase along with the increase of rotating speed, but the oil pressure of motor main oil gallery is that certain requirement is arranged, in engine operation condition, require to keep a stable oil pressure, do not wish that oil pressure is too high, thus in the design oil pump, to install the pressure-limit valve device additional, to keep predetermined engine oil pressure; Simultaneously, when engine cold-start, engine oil viscosity is high; the instantaneous oil pressure that produces in the oil duct is very big; another effect of pressure-limit valve is the generation that prevents excess pressure in the lubrication system for this reason, reduces the peak value oil pressure, and protection oil filter, oil pump and other relevant part are avoided damage.
Find that in the oil pump performance test pressure limiting valve structure of steel ball type pumps pressure when not yet reaching the pressure limiting valve opening pressure value of regulation in oil pump, place, draining hole namely begins oil impregnate, oil dripping, cause engine oil pressure on the low side, dry grinding appears in surface of friction pair, and engine reliability descends.
Summary of the invention:
Purpose of the present invention is exactly the deficiency for prior art, and a kind of piston type engine oil pressure limiting control valve unit is provided, and it can not shift to an earlier date oil impregnate, can avoid causing that engine oil pressure is on the low side, dry grinding appears in surface of friction pair, and engine reliability is good.
Technology solution of the present invention is as follows:
Piston type engine oil pressure limiting control valve unit, comprise the oil pump that is installed together with motor, pump case in oil pump forms installing space, plug screw is screwed onto this installing space top, pressure limiting spring one side pressure on the plug screw, the other end is pressed on the valve core of pressure-limiting valve, valve core of pressure-limiting valve is comprised of pressure-bearing section and cap section, and pressure-bearing section stretches in the oil pump hyperbaric chamber at oil outlet place of oil pump, and draining road one end connects mutually with installing space, the storage sump of the other end and oil pump connects mutually.
Clamping has seal washer between described pump case and the plug screw.
Beneficial effect of the present invention is:
It can not shift to an earlier date oil impregnate, can avoid causing that engine oil pressure is on the low side, dry grinding appears in surface of friction pair, and engine reliability is good.
Description of drawings:
Fig. 1 is structural representation of the present invention
Fig. 2 is the schematic perspective view of valve core of pressure-limiting valve
Among the figure: 1, valve core of pressure-limiting valve; 1a, pressure-bearing section; 1b, cap section; 2, pressure limiting spring; 3, seal washer; 4, plug screw; 5, pump case; 6, storage sump; 7, oil pump; 7a, oil outlet; 7b, oil pump hyperbaric chamber; 8, motor; 9, draining road.
Embodiment:
Embodiment: see shown in Fig. 1,2, piston type engine oil pressure limiting control valve unit, comprise the oil pump 7 that is installed together with motor 8, pump case 5 in oil pump 7 forms installing space 5a, plug screw 4 is screwed onto this installing space 5a top, pressure limiting spring 2 one side pressures on the plug screw 4, the other end is pressed on the valve core of pressure-limiting valve 1, valve core of pressure-limiting valve 1 is comprised of the 1a of pressure-bearing section and the 1b of cap section, the 1a of pressure-bearing section stretches among the oil pump hyperbaric chamber 7b at oil outlet 7a place of oil pump 7, and draining road 9 one ends connect mutually with installing space 5a, the storage sump 6 of the other end and oil pump 7 connects mutually.
Clamping has seal washer 3 between described pump case 5 and the plug screw 4.
Working principle: it pumps pressure when reaching the pressure limiting valve opening pressure value of regulation in oil pump; valve core of pressure-limiting valve 1 soon glides; part machine oil is 9 outflows from the draining road, effectively reduce the peak value oil pressure, and protection oil filter, oil pump and other relevant part are avoided damage.
Pump oil pressure when reaching a certain numerical value when oil pump 7, act on the tension force that pressure on the piston type valve core of pressure-limiting valve 1 overcomes limiting valve spring 2, valve core of pressure-limiting valve 1 is pushed downslide, and a part of machine oil directly flows storage sump 6 through draining road 9, and engine oil pressure is replied normal.
Claims (2)
1. piston type engine oil pressure limiting control valve unit, comprise the oil pump (7) that is installed together with motor (8), it is characterized in that: the pump case (5) in oil pump (7) forms installing space (5a), plug screw (4) is screwed onto this installing space (5a) top, pressure limiting spring (2) one side pressures are on plug screw (4), the other end is pressed on the valve core of pressure-limiting valve (1), valve core of pressure-limiting valve (1) is comprised of pressure-bearing section (1a) and cap section (1b), pressure-bearing section (1a) stretches in the oil pump hyperbaric chamber (7b) that the oil outlet (7a) of oil pump (7) locates, and draining road (9) one ends connect mutually with installing space (5a), the other end connects mutually with the storage sump (6) of oil pump (7).
2. piston type engine oil pressure limiting control valve unit according to claim 1, it is characterized in that: clamping has seal washer (3) between pump case (5) and the plug screw (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435139XA CN102966408A (en) | 2012-11-05 | 2012-11-05 | Piston-type engine oil pressure-limiting valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435139XA CN102966408A (en) | 2012-11-05 | 2012-11-05 | Piston-type engine oil pressure-limiting valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102966408A true CN102966408A (en) | 2013-03-13 |
Family
ID=47796804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210435139XA Pending CN102966408A (en) | 2012-11-05 | 2012-11-05 | Piston-type engine oil pressure-limiting valve device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102966408A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270681A (en) * | 2008-04-30 | 2008-09-24 | 无锡开普机械有限公司 | Engine oil pressure-limiting valve of engine |
| CN101280735A (en) * | 2008-04-30 | 2008-10-08 | 无锡开普机械有限公司 | Gear wheel chamber cap of engine |
| WO2009015666A1 (en) * | 2007-07-30 | 2009-02-05 | Hans Jensen Lubricators A/S | Lubricating apparatus and hydraulic piston for engine cylinder lubrication |
| US20100006056A1 (en) * | 2006-07-21 | 2010-01-14 | Jan Aamand | Lubricating apparatus for a dosing system for cylinder lubrication oil and method for dosing cylinder lubricating oil |
| CN201574795U (en) * | 2009-12-17 | 2010-09-08 | 奇瑞汽车股份有限公司 | Oil pressure regulating device of engine |
| CN202914153U (en) * | 2012-11-05 | 2013-05-01 | 浙江新柴股份有限公司 | Piston-type engine oil pressure limit valve device |
-
2012
- 2012-11-05 CN CN201210435139XA patent/CN102966408A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100006056A1 (en) * | 2006-07-21 | 2010-01-14 | Jan Aamand | Lubricating apparatus for a dosing system for cylinder lubrication oil and method for dosing cylinder lubricating oil |
| WO2009015666A1 (en) * | 2007-07-30 | 2009-02-05 | Hans Jensen Lubricators A/S | Lubricating apparatus and hydraulic piston for engine cylinder lubrication |
| CN101270681A (en) * | 2008-04-30 | 2008-09-24 | 无锡开普机械有限公司 | Engine oil pressure-limiting valve of engine |
| CN101280735A (en) * | 2008-04-30 | 2008-10-08 | 无锡开普机械有限公司 | Gear wheel chamber cap of engine |
| CN201574795U (en) * | 2009-12-17 | 2010-09-08 | 奇瑞汽车股份有限公司 | Oil pressure regulating device of engine |
| CN202914153U (en) * | 2012-11-05 | 2013-05-01 | 浙江新柴股份有限公司 | Piston-type engine oil pressure limit valve device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130313 |