CN104964151A - Diesel engine oil pump - Google Patents
Diesel engine oil pump Download PDFInfo
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- CN104964151A CN104964151A CN201510385326.5A CN201510385326A CN104964151A CN 104964151 A CN104964151 A CN 104964151A CN 201510385326 A CN201510385326 A CN 201510385326A CN 104964151 A CN104964151 A CN 104964151A
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- pressure
- oil
- pump housing
- pump
- high pressure
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Abstract
The invention discloses a diesel engine oil pump. The diesel engine oil pump comprises a pump body, a pump cover, a rotor assembly and a pressure release valve. A lubricating oil low pressure area and a lubricating oil high pressure area are arranged on the pump body. The pressure release valve comprises a pressure passageway and a spring, wherein the pressure passageway is arranged in the pump body and communicated with the high pressure area, and the spring is arranged in the pressure passageway. A sealing piece internally provided with a cavity is fixed in the end, away from the high pressure area, of the pressure passageway. The end, close to the high-pressure area, of the pressure passageway is of a conical structure. The small opening end of the conical structure is close to the high pressure area, and the large opening end of the conical structure is away from the high pressure area. A steel ball with the diameter larger than that of the small opening end is arranged in the conical structure. One end of the spring abuts against the steel ball, and the other end of the spring is fixed in the cavity of the sealing piece. The pressure passageway is internally communicated with a pressure release oil tank communicated with the low pressure area. The pressure release oil tank is arranged in the pump body. One end of the pressure release oil tank is arranged between the small opening end of the conical structure of the pressure passageway and the sealing piece. Pressure release is conducted through the pressure release valve, and lubricating oil in the high pressure area flows back to the low pressure area through the pressure release oil tank.
Description
Technical field
The present invention relates to a kind of oil pump, especially a kind of oil pump that can be used for diesel engine, belongs to technical field of engines.
Background technique
Diesel engine is a kind of economical and practical power plant, is widely used in the every profession and trades such as industry, agricultural, fishery, forestry, mining industry, electric power, communications and transportation.Especially, in the fields such as farm machinery, mining activities, transportation by land and water, mobile power station, little to volume, lightweight, high-power diesel engine demand is very large.Little, lightweight, the high-power diesel engine of volume is also higher to the performance requirement of component.
The diesel engine list of prior art generally adopts oil pump to carry out pressure lubrication to motor, oil pump carries out synchronous axial system transmitting torque by the driving mechanism such as bent axle, camshaft, trunnion shaft of motor, lubricant oil is outputted to the position of lubricating required for engine, as cylinder sleeve, piston, connecting rod, bearing, gear chamber etc.Due to rotating speed and the engine synchronization of oil pump, when motor works under declared working condition, oil pump can provide the lubricant oil of rated pressure, flow to meet the lubrication needs of motor.But, in most of the cases, motor is all in the state of operating at full capacity, now oil pump also operates with the engine synchronization run up, thus oil pump export lubricating oil pressure, flow is directly proportional to engine speed increases, this will cause, and pressure in engine oil gallery is rapid to be increased, considerably beyond working pressure during declared working condition, flow.At this moment can aggravate the wearing and tearing of engine oil pump assembly, cause lubricating oil path connection part seepage, more seriously add power consumpiton and the loss of motor, motor efficiency is reduced.
For this situation, prior art arranges the method that single overload Decompression valves is simple possible on the engine, and lot of domestic and international type also using this device.At present, the installation position of engine oil pump mainly contains built-in and exposed two kinds.Built-in oil pump is mounted in body, and this oil pump installs separately overload Decompression valves additional, and overflowing lubricant oil can directly be thrown in body, is back to oil sump.Exposed oil pump is mounted in outside body, because exposed oil pump is confined to the problem of pressure release return line, generally do not design overload Decompression valves, prior art also has a kind of by setting up return line in addition to coordinate single exposed oil pump increasing Decompression valves on body, but this structure versatility is poor.
Summary of the invention
The object of the present invention is to provide a kind of compact structure, do not change the diesel engine oil pump of former installation dimension, to solve the problem of the oil pump poor universality of prior art.
The present invention adopts following technological scheme: a kind of diesel engine oil pump, comprise the pump housing, pump cover and rotor assembly, the pump housing is provided with oil inlet hole and oil outlet, the pump housing being positioned at oil inlet hole place is low pressure area, the pump housing being positioned at oil outlet place is zone of high pressure, the side that the described pump housing is relative with described oil outlet is provided with Decompression valves, described Decompression valves comprises the pressure channel being opened in and being communicated with described zone of high pressure in the pump housing and the spring be arranged in pressure channel, described pressure channel has inside to have the Sealing of cavity away from one end internal fixtion of zone of high pressure, described pressure channel is cone structure near one end of zone of high pressure, the osculum end of this cone structure is near zone of high pressure, big opening end is away from zone of high pressure, the steel ball that diameter is greater than osculum end is provided with in this cone structure, one end of described spring holds out against on steel ball, the other end is fixed in the cavity of Sealing, the pressure release oil groove be communicated with described low pressure area is communicated with in described pressure channel, pressure release oil groove is opened in the pump housing, described pressure release oil groove one end is arranged on the position between pressure channel upper conical structure osculum end and Sealing.
Described Sealing is the screw press that outside has outside thread, inside has cavity, described pressure channel is connected with screw press thread seal, it is outside that the end of screw press is positioned at the described pump housing, and one end that described screw press is positioned at pump housing outside is installed with locking nut.
Described pressure release oil groove ring is located at rotor assembly outside.
Described pressure release oil groove is cross section is trapezoidal or semicircular annular groove.
Seal ring is provided with between described pump cover and the pump housing.
The invention has the beneficial effects as follows: in use, rotor assembly is by engine transmission components transmitting torque, and by lubricant oil from being drawn into the oil duct of zone of high pressure in the oil duct of low pressure area, pressure lubrication oil enters into each lubricant housings of motor by oil outlet in the present invention.Motor is when declared working condition, and the lubricant oil of rated pressure exports normal fuel injection, and now the pressure of spring is equal with lubricant oil rated pressure, and now Decompression valves is in closed condition; When motor is in the operating mode of transshipping and running up, the pressure of zone of high pressure lubricant oil will exceed rated pressure, now the lubricant oil of high pressure will apply pressure to steel ball, pressure can be passed to spring by steel ball, spring will be compressed, now Decompression valves is in opening state, and the lubricant oil of high pressure will to enter in pressure channel and to be back to low pressure zone from pressure release oil groove, thus completes the process of pressure release.Decompression valves and pressure release oil groove combine by the present invention, reach voltage stabilizing, energy-conservation, reflux integrated object, because pressure release oil groove of the present invention is in the pump housing, the present invention does not change the former installation dimension of oil pump, also do not need to set up return line in addition, versatility is good.The present invention is reasonable in design, compact structure, stable performance.
Further, by rotating the screw press fine setting position of screw press in pressure channel, the pressure of spring can be finely tuned like this, screw press can be regulated according to the pressure of zone of high pressure lubricant oil under declared working condition, adopt locking nut to fix screw press after adjustment, oil pump test, pressure regulation work complete.
Further, pressure release oil groove ring is located at outside rotor assembly, can form a permanent oil storage tank, thus make the moving element of oil pump itself add self-lubricating effect in the working zone of rotor assembly.
Further, the cross section of pressure release oil groove is that trapezoidal being convenient to is processed.
Further, the junction plane of pump cover and the pump housing is provided with the effect that seal ring can reach sealing.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention.
In figure 1---the pump housing, 2---pump cover, 3---rotor assembly, 41---filler opening, 42---oil outlet, 5---Decompression valves, 51---pressure channel, 52---steel ball, 53---spring, 54---screw press, 55---locking nut, 6---pressure release oil groove, 7---seal ring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The structure of an embodiment of the present invention as shown in Figure 1, the diesel engine oil pump of the present embodiment comprises the pump housing 1, pump cover 2 and rotor assembly 3, seal ring 7 is provided with between pump cover 1 and the pump housing 2, the pump housing 1 is provided with oil inlet hole 41 and oil outlet 42, the pump housing 1 being positioned at oil inlet hole 41 place is low pressure area, the pump housing 1 being positioned at oil outlet 42 place is zone of high pressure, the side that the described pump housing 1 is relative with described oil outlet 42 is provided with Decompression valves 5, described Decompression valves 5 comprises and is opened in the pressure channel 51 be communicated with described zone of high pressure in the pump housing 1 and the spring 53 be arranged in pressure channel 51, described pressure channel 51 has inside to have the Sealing of cavity away from one end internal fixtion of zone of high pressure, the Sealing of the present embodiment adopts outside to have outside thread, inside has the screw press 54 of cavity, described pressure channel 51 is connected with screw press 54 thread seal, the end of screw press 54 is positioned at the described pump housing 1 outside, one end that described screw press 54 is positioned at pump housing outside is installed with locking nut 55.
Described pressure channel 51 is cone structure near one end of zone of high pressure, the osculum end of this cone structure is near zone of high pressure, big opening end is away from zone of high pressure, the steel ball 52 that diameter is greater than osculum end is provided with in this cone structure, one end of described spring 53 holds out against on steel ball 52, the other end is fixed in the cavity of Sealing, the pressure release oil groove 6 be communicated with described low pressure area is communicated with in described pressure channel 51, pressure release oil groove 6 is opened in the interior also ring of the pump housing 1 and is located at rotor assembly 3 outside, described pressure release oil groove 6 one end is arranged on the position between pressure channel 51 upper conical structure osculum end and Sealing.Described pressure release oil groove 6 for cross section be trapezoidal annular groove.
Operationally, rotor assembly is by engine transmission components transmitting torque, and by lubricant oil from being drawn into the oil duct of zone of high pressure in the oil duct of low pressure area, the pressure lubrication oil of zone of high pressure enters into each lubricant housings of motor by oil outlet for the oil pump of the present embodiment.
Oil pump should carry out assembling and setting before use, during declared working condition, after standard testing, according to the pressure of zone of high pressure lubricant oil, Decompression valves cracking pressure is set, by rotating the screw press fine setting position of screw press in pressure channel, make the pressure of spring equal the pressure of zone of high pressure lubricant oil under declared working condition, tighten locking nut after adjustment, oil pump test, pressure regulation work complete.
Motor is when declared working condition, and the lubricant oil of rated pressure exports normal fuel injection, and the pressure of zone of high pressure lubricant oil equals rated pressure, and now the pressure of spring is equal with the pressure of zone of high pressure lubricant oil, and now Decompression valves is in closed condition; When motor is in the operating mode of transshipping and running up, the pressure of zone of high pressure lubricant oil will exceed rated pressure, now the lubricant oil of high pressure will apply pressure to steel ball, pressure can be passed to spring by steel ball, spring will be compressed, now Decompression valves is in opening state, and the lubricant oil of high pressure will to enter in pressure channel and to be back to low pressure area from pressure release oil groove, thus completes the process of pressure release.Because the pressure release oil groove ring of the present embodiment is located at outside rotor assembly, a permanent oil storage tank can be formed in the working zone of rotor assembly, oil storage tank can provide lubricant oil to rotor assembly, thus makes the moving element of oil pump itself add self-lubricating effect.
Decompression valves and pressure release oil groove combine by the present embodiment, reach voltage stabilizing, energy-conservation, backflow, the integrated effect of selflubricating, because pressure release oil groove is in the pump housing, the former installation dimension of oil pump can not be changed, also do not need to set up return line in addition, versatility is good, reasonable in design, compact structure, stable performance.
Above-described embodiment is a kind of preferred embodiment of the present invention, in other embodiment of the present invention, locking element can not adopt the form of screw press, the locking element that inside has cavity directly can be welded on pressure channel or adopt the structure be connected with pressure channel one, now the cracking pressure of Decompression valves and the pressure of spring are pre-set, now just do not need the cracking pressure of debugging Decompression valves in advance.
In other embodiment of the present invention, the cross section of pressure release oil groove can also be semicircle.
Above embodiment describes basic principle of the present invention and advantage; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. a diesel engine oil pump, comprise the pump housing (1), pump cover (2) and rotor assembly (3), the pump housing (1) is provided with oil inlet hole (41) and oil outlet (42), the pump housing (1) being positioned at oil inlet hole (41) place is low pressure area, the pump housing (1) being positioned at oil outlet (42) place is zone of high pressure, the side that the described pump housing (1) is relative with described oil outlet (42) is provided with Decompression valves (5), it is characterized in that: described Decompression valves (5) comprises and is opened in the pump housing (1) pressure channel (51) be communicated with described zone of high pressure and the spring (53) be arranged in pressure channel (51), described pressure channel (51) has inside to have the Sealing of cavity away from one end internal fixtion of zone of high pressure, described pressure channel (51) is cone structure near one end of zone of high pressure, the osculum end of this cone structure is near zone of high pressure, big opening end is away from zone of high pressure, the steel ball (52) that diameter is greater than osculum end is provided with in this cone structure, one end of described spring (53) holds out against on steel ball (52), the other end is fixed in the cavity of Sealing, the pressure release oil groove (6) be communicated with described low pressure area is communicated with in described pressure channel (51), pressure release oil groove (6) is opened in the pump housing (1), described pressure release oil groove (6) one end is arranged on the position between pressure channel (51) upper conical structure osculum end and Sealing.
2. diesel engine oil pump according to claim 1, it is characterized in that: described Sealing is the screw press (54) that outside has outside thread, inside has cavity, described pressure channel (51) is connected with screw press (54) thread seal, the end of screw press (54) is positioned at the described pump housing (1) outside, and described screw press (54) is positioned on the outside one end of the pump housing (1) and is installed with locking nut (55).
3. diesel engine oil pump according to claim 1, is characterized in that: it is outside that described pressure release oil groove (6) ring is located at rotor assembly (3).
4. the diesel engine oil pump according to claim 1 or 2 or 3, is characterized in that: described pressure release oil groove (6) for cross section be trapezoidal or semicircular annular groove.
5. the diesel engine oil pump according to claim 1 or 2 or 3, is characterized in that: be provided with seal ring between described pump cover (2) and the pump housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385326.5A CN104964151A (en) | 2015-07-03 | 2015-07-03 | Diesel engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385326.5A CN104964151A (en) | 2015-07-03 | 2015-07-03 | Diesel engine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104964151A true CN104964151A (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510385326.5A Pending CN104964151A (en) | 2015-07-03 | 2015-07-03 | Diesel engine oil pump |
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| Country | Link |
|---|---|
| CN (1) | CN104964151A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015542A (en) * | 2016-08-17 | 2016-10-12 | 湖南机油泵股份有限公司 | Transmission oil pump capable of preventing pressure of transmission oil duct from being too high |
| CN106051440A (en) * | 2016-08-17 | 2016-10-26 | 湖南机油泵股份有限公司 | Engine oil pump with safety valve |
| CN106764371A (en) * | 2016-11-29 | 2017-05-31 | 东风朝阳朝柴动力有限公司 | Can adjust automatically engine oil pressure rotor-type oil pump assembly |
| CN110566796A (en) * | 2019-08-30 | 2019-12-13 | 安徽江淮汽车集团股份有限公司 | Oil pump, engine lubrication system and automobile |
| CN113639180A (en) * | 2021-08-03 | 2021-11-12 | 周广达 | Oil pump of automobile |
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| CN103256092A (en) * | 2012-02-16 | 2013-08-21 | 上海乾通汽车附件有限公司 | Oil pump assembly of gasoline engine |
| CN203308704U (en) * | 2013-05-31 | 2013-11-27 | 龙口龙泵燃油喷射有限公司 | Inside engaged gear type oil delivery pump |
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| CN203718353U (en) * | 2014-01-07 | 2014-07-16 | 陈锐志 | Oil pump with pressure limiting valve |
| CN103939173A (en) * | 2014-04-14 | 2014-07-23 | 奇瑞汽车股份有限公司 | Oil pump for engine |
| CN104343679A (en) * | 2013-07-30 | 2015-02-11 | 株式会社山田制作所 | Internal gear oil pump |
| CN204785470U (en) * | 2015-07-03 | 2015-11-18 | 南京高德机械有限公司 | Diesel engine oil pump |
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2015
- 2015-07-03 CN CN201510385326.5A patent/CN104964151A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040136838A1 (en) * | 2003-01-10 | 2004-07-15 | Resh William F | Electronic pressure relief valve for engine oil pump |
| US20120061184A1 (en) * | 2010-09-14 | 2012-03-15 | Eaton Corporation | Transmission Pump |
| CN202546204U (en) * | 2011-11-24 | 2012-11-21 | 比亚迪股份有限公司 | Oil pump |
| CN202452080U (en) * | 2012-01-12 | 2012-09-26 | 高淳县第二机油泵制造有限公司 | Oil pump |
| CN103256092A (en) * | 2012-02-16 | 2013-08-21 | 上海乾通汽车附件有限公司 | Oil pump assembly of gasoline engine |
| CN202852384U (en) * | 2012-10-23 | 2013-04-03 | 重庆赛特尔机械有限公司 | Automobile oil pump structure |
| CN203308704U (en) * | 2013-05-31 | 2013-11-27 | 龙口龙泵燃油喷射有限公司 | Inside engaged gear type oil delivery pump |
| CN104343679A (en) * | 2013-07-30 | 2015-02-11 | 株式会社山田制作所 | Internal gear oil pump |
| CN203374407U (en) * | 2013-08-12 | 2014-01-01 | 浙江高阳汽车电子有限公司 | Fuel pump component of electric fuel pump |
| CN203718353U (en) * | 2014-01-07 | 2014-07-16 | 陈锐志 | Oil pump with pressure limiting valve |
| CN103939173A (en) * | 2014-04-14 | 2014-07-23 | 奇瑞汽车股份有限公司 | Oil pump for engine |
| CN204785470U (en) * | 2015-07-03 | 2015-11-18 | 南京高德机械有限公司 | Diesel engine oil pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015542A (en) * | 2016-08-17 | 2016-10-12 | 湖南机油泵股份有限公司 | Transmission oil pump capable of preventing pressure of transmission oil duct from being too high |
| CN106051440A (en) * | 2016-08-17 | 2016-10-26 | 湖南机油泵股份有限公司 | Engine oil pump with safety valve |
| CN106764371A (en) * | 2016-11-29 | 2017-05-31 | 东风朝阳朝柴动力有限公司 | Can adjust automatically engine oil pressure rotor-type oil pump assembly |
| CN110566796A (en) * | 2019-08-30 | 2019-12-13 | 安徽江淮汽车集团股份有限公司 | Oil pump, engine lubrication system and automobile |
| CN113639180A (en) * | 2021-08-03 | 2021-11-12 | 周广达 | Oil pump of automobile |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20151007 |