CN103133080A - Relief valve of engine oil pump and lubricating system thereof - Google Patents
Relief valve of engine oil pump and lubricating system thereof Download PDFInfo
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- CN103133080A CN103133080A CN2013100506381A CN201310050638A CN103133080A CN 103133080 A CN103133080 A CN 103133080A CN 2013100506381 A CN2013100506381 A CN 2013100506381A CN 201310050638 A CN201310050638 A CN 201310050638A CN 103133080 A CN103133080 A CN 103133080A
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- oil pump
- valve
- oil
- relief valve
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- Lubrication Of Internal Combustion Engines (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a relief valve of an engine oil pump and a lubricating system thereof. The relief valve of the engine oil pump comprises a machine body, the engine oil pump, an oil way from the engine oil pump to the machine body, a relief valve body, oil return holes, a relief valve spring, an oil return cavity, a sealing gasket, a sealing valve plug screw, an engine body oil discharging channel and an engine oil pump oil inlet channel. The relief valve body is installed in oil way from the engine oil pump to the machine body, the relief valve spring is installed at the lower end of the relief valve body, the relief valve plug screw is installed on the machine body, and the sealing gasket is installed in a groove of the relief valve plug screw. The diameter phi of an excircle of the upper end of the relief valve body ranges from 15mm to 17mm, the diameter phi of an inner circle ranges from 12mm to 14mm, the height of an inner cavity ranges from 28.5mm to 32.5mm, the diameter phi of the lower end of the relief valve body ranges from 6.5mm to 8.5mm, and the height of the lower end ranges from 4mm to 6mm. Five to seven oil return holes are arranged at the bottom of the upper end of the relief valve body, the diameter phi of the oil return holes ranges from 4mm to 6mm, and the distance between a horizontal central line of the oil return holes to the bottom of the upper end of the valve body ranges from 4.5mm to 6.6mm.
Description
Technical field:
The invention belongs to field of internal combustion engine, relate to a kind of engine oil pump pressure-limit valve and lubrication system thereof.
Background technique:
As everyone knows, motor is when work, and the pump oil pressure of its oil pump raises with the engine speed increase.And when oil circuit is not smooth in cold starting or lubricating system when motor, when as too small in the bearing play or engine oil viscosity is excessive, engine oil pressure is raise.Therefore, must be according to the purposes of motor, the highest charge oil pressure of restriction oil pump is to guarantee work safety.Traditional oil pump pressure limiting device is mounted on oil pump or is arranged on the oil inlet passage of engine body (oil discharge passage of oil pump), sets pressure and pressure-limit valve is set for the engine oil pressure with fuel-displaced side is restricted to.Traditional pressure-limit valve overflows back circulation road and divides two kinds, a kind of is directly to be back to oil sump, this valve often for oil overflow is discharged into oil pump outside and with pressure-limit valve draining hole open excessive, oil overflow is sharply discharged during pressure regulation like this, and chattering can occur; Another is that stroke by valve strengthens the unlatching spill port gradually, oil overflow is passed back into the oil suction chamber of oil pump.This circuit often draining speed is too slow, and engine oil pressure can not be adjusted to the value of restriction very soon, can't the reliably protecting lubrication system work with security and stability.
Summary of the invention:
The object of the present invention is to provide a kind of the highest charge oil pressure that can limit oil pump, engine oil pump pressure-limit valve and the lubrication system thereof of the safe and reliable work of other parts such as protection oil filter.
The present invention achieves the above object by the following technical programs: engine oil pump pressure-limit valve and lubrication system thereof comprise: body, oil pump, oil pump are to body oil duct, pressure limiting valve body, spill port, limiting valve spring, oil back chamber, seal washer, pressure-limit valve plug screw, body draining passage and oil pump oil inlet passage; The pressure-limit valve valve body is arranged on oil pump to the body oil duct, limiting valve spring is arranged on the lower end of pressure-limit valve valve body, the pressure-limit valve valve body is the upper spring seat of limiting valve spring, the pressure-limit valve plug screw is installed on body, the pressure-limit valve plug screw is again the lower spring cup of limiting valve spring simultaneously, and seal washer is arranged in the groove of pressure-limit valve plug screw.
The upper end outside diameter of pressure-limit valve valve body is Φ 15～Φ 17mm, and interior circular diameter is Φ 12～Φ 14mm, and the inner chamber height is 28.5～32.5mm; The lower end diameter of pressure-limit valve valve body is Φ 6.5～Φ 8.5mm, and the height of lower end is 4～6mm; The bottom, upper end of pressure-limit valve valve body is provided with five to seven spill ports, and the spill port diameter is Φ 4～Φ 6 mm, and the horizontal center line of spill port is 4.5～6.5mm apart from the upper end bottom level of valve body.
The present invention can reach following good effect after adopting technique scheme: compact structure of the present invention, and easily manufactured.Pressure-limit valve is arranged on engine body oil pump to the oil duct of body, and this oil duct is connected with the oil inlet passage of oil pump, in pressure-limit valve, a plurality of spill ports are set simultaneously, oil overflow directly can be got back to the oil inlet passage of oil pump like this, draining fast, is steadily compared with the pressure-limit valve that oil overflow flows directly into oil sump and can effectively be reduced the machine oil flow velocity of oil sump to the fuel sucking pipe between oil pump.Therefore, the unsettled phenomenon of the chattering that produces in the time of both can avoiding the oil pump pressure limiting and oil pressure, oppositely the downward draining speed that produces of installing is excessively slow can to avoid again traditional pressure-limit valve valve body, and engine oil pressure can not be adjusted to the problem of limit value very soon.Be arranged on the outside of body due to the plug screw of pressure-limit valve, therefore, install, safeguard all very convenient.
Description of drawings:
Fig. 1 is the profile schematic diagram of engine oil pump pressure-limit valve of the present invention and lubrication system thereof.
Fig. 2 is the B ~ B cross-sectional schematic of engine oil pump pressure-limit valve of the present invention and lubrication system thereof.
Fig. 3 is the structural representation of the pressure-limit valve valve body of engine oil pump pressure-limit valve of the present invention and lubrication system thereof.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described further.As shown in Fig. 1 ~ 3, engine oil pump pressure-limit valve of the present invention and lubrication system thereof mainly comprise: body 1, oil pump 2, oil pump are to body oil duct 3, pressure limiting valve body 4, spill port 5, limiting valve spring 6, oil back chamber 7, seal washer 8, pressure-limit valve plug screw 9, body draining path 10 and oil pump oil inlet passage 11 etc.To body oil duct 3, pressure-limit valve valve body 4, limiting valve spring 6, seal washer 8 and pressure-limit valve plug screw 9 are installed successively in oil pump, pressure-limit valve valve body 4 is the upper spring seat of limiting valve spring 6 simultaneously, and pressure-limit valve plug screw 9 is arranged on body 1.
The upper end outside diameter D of pressure-limit valve valve body 4 is Φ 15～Φ 17mm, and the inner circle diameter d is Φ 12～Φ 14mm, and the inner chamber height H is 28.5～32.5mm; The lower end diameter d1 of pressure-limit valve valve body 4 is Φ 6.5～Φ 8.5mm, and the height E of lower end is 4～6mm.
The bottom, upper end of pressure-limit valve valve body 4 is provided with five to seven spill ports 5, and spill port diameter C is Φ 4～Φ 6 mm, and the horizontal center line of spill port is 4.5～6.5mm apart from the upper end bottom level F of valve body 4.
machine oil sucks from oil pump oil inlet passage 11 rapidly when oil pump 2 runs up, flow out after the oil pump pressurization and enter oil pump to body oil duct 3, engine oil pressure constantly raises along with the increase of engine speed, when oil pump to the engine oil pressure in body oil duct 3 surpasses predetermined CLV ceiling limit value, overcome the impacting force of limiting valve spring 6, promoting pressure-limit valve valve body 4 moves downward, after the lower limb and oil back chamber 7 connections of spill port 5, along with pressure limiting valve body 4 moves downward, the logical pasta of spill port 5 is long-pending to be increased gradually, oil overflow flow in the circular crosssection oil pocket of pressure limiting valve body 4 and oil back chamber 7 formation from spill port 5, flow to again the oil inlet passage 11 of oil pump by the draining path 10, enter in oil pump, after oil pump to the pressure in body oil duct 3 reaches predetermined value, under the effect of spring force, pressure limiting valve body 4 is got back to original mounting point, so far completed the draining process.
As mentioned above, engine oil pump pressure-limiting valve of the present invention can be fast, steadily, effectively the controller oil pump go out oil pressure, guarantee that lubrication system works safely and reliably.
Claims (2)
1. engine oil pump pressure-limit valve and lubrication system thereof, comprising: body (1), oil pump (2), oil pump are to body oil duct (3), pressure limiting valve body (4), spill port (5), limiting valve spring (6), oil back chamber (7), seal washer (8), pressure-limit valve plug screw (9), body draining passage (10) and oil pump oil inlet passage (11); It is characterized in that: pressure-limit valve valve body (4) is arranged on oil pump to body oil duct (3), limiting valve spring (6) is arranged on the lower end of pressure-limit valve valve body (4), pressure-limit valve valve body (4) is the upper spring seat of limiting valve spring (6), pressure-limit valve plug screw (9) is installed on body (1), pressure-limit valve plug screw (9) is again the lower spring cup of limiting valve spring (6) simultaneously, and seal washer (8) is arranged in the groove of pressure-limit valve plug screw (9).
2. engine oil pump pressure-limit valve according to claim 1 and lubrication system thereof, it is characterized in that: the upper end outside diameter (D) of pressure-limit valve valve body (4) is Φ 15～Φ 17mm, interior circular diameter (d) is Φ 12～Φ 14mm, and inner chamber height (H) is 28.5～32.5mm; The lower end diameter (d1) of pressure-limit valve valve body (4) is Φ 6.5～Φ 8.5mm, and the height of lower end (E) is 4～6mm; The bottom, upper end of pressure-limit valve valve body (4) is provided with five to seven spill ports (5), and spill port diameter (C) is Φ 4～Φ 6 mm, and the horizontal center line of spill port is 4.5～6.5mm apart from the upper end bottom level (F) of valve body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100506381A CN103133080A (en) | 2013-02-16 | 2013-02-16 | Relief valve of engine oil pump and lubricating system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100506381A CN103133080A (en) | 2013-02-16 | 2013-02-16 | Relief valve of engine oil pump and lubricating system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103133080A true CN103133080A (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100506381A Pending CN103133080A (en) | 2013-02-16 | 2013-02-16 | Relief valve of engine oil pump and lubricating system thereof |
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| Country | Link |
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| CN (1) | CN103133080A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644039A (en) * | 2013-11-07 | 2014-03-19 | 山西新天地发动机制造有限公司 | Engine oil pressure-limiting and pressure-relief oil return system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549182Y (en) * | 2002-06-22 | 2003-05-07 | 郑国璋 | Pressure limited oil recoverer for engine oil |
| 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 |
| CN201198774Y (en) * | 2008-04-30 | 2009-02-25 | 无锡开普机械有限公司 | Pressure-limiting valve of engine oil |
| CN202391508U (en) * | 2011-12-26 | 2012-08-22 | 重庆科克发动机技术有限公司 | Novel oil pressure relief valve |
| CN203067054U (en) * | 2013-02-16 | 2013-07-17 | 洛阳拖拉机研究所有限公司 | Engine oil pump pressure-limiting valve and lubrication system thereof |
-
2013
- 2013-02-16 CN CN2013100506381A patent/CN103133080A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549182Y (en) * | 2002-06-22 | 2003-05-07 | 郑国璋 | Pressure limited oil recoverer for engine oil |
| 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 |
| CN201198774Y (en) * | 2008-04-30 | 2009-02-25 | 无锡开普机械有限公司 | Pressure-limiting valve of engine oil |
| CN202391508U (en) * | 2011-12-26 | 2012-08-22 | 重庆科克发动机技术有限公司 | Novel oil pressure relief valve |
| CN203067054U (en) * | 2013-02-16 | 2013-07-17 | 洛阳拖拉机研究所有限公司 | Engine oil pump pressure-limiting valve and lubrication system thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644039A (en) * | 2013-11-07 | 2014-03-19 | 山西新天地发动机制造有限公司 | Engine oil pressure-limiting and pressure-relief oil return system |
| CN103644039B (en) * | 2013-11-07 | 2016-11-09 | 山西新天地发动机制造有限公司 | Engine motor oil pressure limiting pressure release oil return system |
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Application publication date: 20130605 |