CN107120220A - A kind of injection pump for preventing diesel engine starting difficult - Google Patents
A kind of injection pump for preventing diesel engine starting difficult Download PDFInfo
- Publication number
- CN107120220A CN107120220A CN201710522561.1A CN201710522561A CN107120220A CN 107120220 A CN107120220 A CN 107120220A CN 201710522561 A CN201710522561 A CN 201710522561A CN 107120220 A CN107120220 A CN 107120220A
- Authority
- CN
- China
- Prior art keywords
- pump
- electronically controlled
- controlled unit
- installation cavity
- fuel inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/38—Pumps characterised by adaptations to special uses or conditions
- F02M59/42—Pumps characterised by adaptations to special uses or conditions for starting of engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
A kind of injection pump for preventing diesel engine starting difficult disclosed by the invention, including:The high-pressure oil pump pump housing being connected with engine；Some sets are arranged in the electronically controlled unit pump in the high-pressure oil pump pump housing, the electronically controlled unit pump and are provided with control valve element side by side；The fuel inlet fitting in the fuel inlet fitting installation cavity is arranged on by swivel nut and seal；The gate gurgle valve in the gate gurgle valve installation cavity is arranged on by swivel nut and seal；The lowest part of the lowest part of its fuel inlet fitting and the gate gurgle valve is higher than the highest point of the control valve element in the electronically controlled unit pump.As low pressure oil way has air entrance, because relief valve and fuel inlet fitting lowest part are higher than the highest point for controlling valve element, air enter at relief valve, fuel inlet fitting after because control valve element highest point have oily covering, so as to which air can not can be prevented effectively from because low pressure oil way enters after air to cause difficulty in starting or can not start by controlling to enter high-pressure oil pipe at valve element.
Description
Technical field
It is more particularly to a kind of to be applied to fuel oil injection the present invention relates to a kind of high-pressure oil pump technical field of Diesel engine
System prevents the injection pump of difficulty in starting after low pressure oil way enters air.
Background technology
Delivery valve in existing monoblock pump is using damping valve arrangement, after entering air at low pressure oil way, and air can be along low
Pressure chamber oil circuit is entered in high-pressure oil pipe always, and is caused diesel engine starting difficult or even can not be started.
Chinese invention patent CN201010261721.X discloses a kind of automatically controlled combination of monomers of injecting fuel of diesel motor
Pump, including the pump housing；One is arranged on the camshaft in the pump housing；The outer side-lower of the pump housing is installed total by the oil transfer pump of camshaft actuated
Into fuel oil is pumped into the high-pressure oil duct in the pump housing by the oil transportation pump assembly；It also includes some sets and is installed on side by side on the pump housing
Electronically controlled unit pump, the plunger in the electronically controlled unit pump is controlled by the camshaft；The plunger will be entered by high-pressure oil duct
Magnetic valve on fuel oil compression in plunger cavity, the electronically controlled unit pump is controlled by ECU control devices, will be compressed in plunger cavity
Fuel oil spray into cylinder.Once the patent of invention can enter air in the presence of low pressure oil way can cause difficulty in starting or can not
The problems such as startup.Its high-pressure pump pump housing, which is also limited by present structure, to be optimized to oil circuit.
The content of the invention
The technical problems to be solved by the invention for existing monoblock pump low pressure oil way enter that difficulty in starting can be caused after air
Or a kind of injection pump for preventing diesel engine starting difficult is provided the problem of can not start.
The technical problems to be solved by the invention can be achieved through the following technical solutions：
A kind of injection pump for preventing diesel engine starting difficult, including:
In the high-pressure oil pump pump housing being connected with engine, the high-pressure oil pump pump housing there are some electronically controlled unit pumps to install
Chamber, oil-feed enter an installation cavity and gate gurgle valve installation cavity, the fuel inlet fitting installation cavity and adjacent electronically controlled unit pump installation cavity it
Between, oil hole, all electronically controlled unit pump installation cavity and an oil duct are provided between two adjacent electronically controlled unit pump installation cavitys
Connection, the oil duct is connected with the gate gurgle valve installation cavity, and the oil hole and oil duct are arranged at the high-pressure oil pump pump
In vivo；
Some sets are arranged in the electronically controlled unit pump in some electronically controlled unit pump installation cavitys, each electronically controlled unit pump side by side
Low pressure chamber is connected with corresponding oil hole；Control valve element is installed in the electronically controlled unit pump；
The fuel inlet fitting in the fuel inlet fitting installation cavity is arranged on by swivel nut and seal；
The gate gurgle valve in the gate gurgle valve installation cavity is arranged on by swivel nut and seal；Characterized in that, it is described enter
The lowest part of the lowest part of oily joint and the gate gurgle valve is higher than the highest point of the control valve element in the electronically controlled unit pump.
As a result of technical scheme as above, the present invention can prevent from entering after air at low pressure oil way, and air will not edge
Low pressure chamber to enter in high-pressure oil pipe, diesel engine starting difficulty can be prevented effectively from or can not be started.
Brief description of the drawings
Fig. 1 prevents the front view of the difficult injection pump of diesel engine starting for the present invention.
Fig. 2 is Fig. 1 right view.
Fig. 3 prevents the centre section schematic diagram of the difficult injection pump of diesel engine starting for the present invention.
Fig. 4 prevents the partial structural diagram of the difficult injection pump of diesel engine starting for the present invention.
Fig. 5 prevents the diagrammatic cross-section of the high-pressure oil pump pump housing in the difficult injection pump of diesel engine starting for the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1 to Fig. 5, a kind of injection pump for preventing diesel engine starting difficult provided in figure, including high-pressure oil pump pump
In body 100, the high-pressure oil pump pump housing 100 there are some electronically controlled unit pump installation cavitys 110, oil-feed to enter an installation cavity 120 and gate gurgle valve
Installation cavity 130, between fuel inlet fitting installation cavity 120 and adjacent electronically controlled unit pump installation cavity 120, two adjacent automatically controlled monomers
Oil hole a is provided between pump installation cavity 120, all electronically controlled unit pump installation cavitys 120 are connected with an oil duct b, and oil duct b is with letting out
Fuel tap installation cavity 130 is connected, and oil hole a and oil duct b are arranged in the high-pressure oil pump pump housing 100.
A kind of injection pump for preventing that diesel engine starting is difficult provided in figure also includes some sets is pacified side by side by screw 210
Low pressure chamber in electronically controlled unit pump 200 in some electronically controlled unit pump installation cavitys 120, each electronically controlled unit pump 200 is (in figure
It is not shown) connected with corresponding oil hole a；Control valve element 220 is installed in electronically controlled unit pump 200.
A kind of injection pump for preventing that diesel engine starting is difficult provided in figure also includes passing through swivel nut 310 and seal
320th, 330 it is arranged on the fuel inlet fitting 300 in fuel inlet fitting installation cavity 110；With pass through swivel nut 410 and seal 420,430
Gate gurgle valve 400 in gate gurgle valve installation cavity 130.
It is a feature of the present invention that the lowest part of fuel inlet fitting 300 and the lowest part of gate gurgle valve 400 are higher than electronically controlled unit pump
The highest point of control valve element 220 in 200.
Fuel oil enters from fuel inlet fitting 300, and the low pressure of electronically controlled unit pump 200 is flowed through through the oil hole a of the high-pressure oil pump pump housing 100
The oil duct b that chamber is flowed into the high-pressure oil pump pump housing 100 again, finally flows out from relief valve 400.
The present invention improves relief valve 400 and the installation site of fuel inlet fitting 300, when low pressure oil way has air to enter, because
Relief valve 400 and the lowest part of fuel inlet fitting 300 are higher than the highest point of control valve element, and air is from relief valve 400, fuel inlet fitting 300
Because the control highest point of valve element 220 has oily covering after place's entrance, so that air can not be by controlling to enter high pressure at valve element 220
Oil pipe, therefore avoid because low pressure oil way enters after air to cause difficulty in starting or can not start.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The structural principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, this
A little changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention has appended claims
And its equivalent is defined.
Claims (1)
1. a kind of injection pump for preventing diesel engine starting difficult, including:
There are some electronically controlled unit pump installation cavitys in the high-pressure oil pump pump housing being connected with engine, the high-pressure oil pump pump housing, enter
Oil enters an installation cavity and gate gurgle valve installation cavity, between the fuel inlet fitting installation cavity and adjacent electronically controlled unit pump installation cavity, two
Oil hole is provided between individual adjacent electronically controlled unit pump installation cavity, all electronically controlled unit pump installation cavitys are connected with an oil duct,
The oil duct is connected with the gate gurgle valve installation cavity, and the oil hole and oil duct are arranged in the high-pressure oil pump pump housing；
Some sets are arranged on the low pressure in the electronically controlled unit pump in some electronically controlled unit pump installation cavitys, each electronically controlled unit pump side by side
Chamber is connected with corresponding oil hole；Control valve element is installed in the electronically controlled unit pump；
The fuel inlet fitting in the fuel inlet fitting installation cavity is arranged on by swivel nut and seal；
The gate gurgle valve in the gate gurgle valve installation cavity is arranged on by swivel nut and seal；It is characterized in that：
The lowest part of the lowest part of the fuel inlet fitting and the gate gurgle valve is higher than the control valve element in the electronically controlled unit pump
Highest point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710522561.1A CN107120220B (en) | 2017-06-30 | 2017-06-30 | Fuel injection pump for preventing difficult starting of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710522561.1A CN107120220B (en) | 2017-06-30 | 2017-06-30 | Fuel injection pump for preventing difficult starting of diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107120220A true CN107120220A (en) | 2017-09-01 |
| CN107120220B CN107120220B (en) | 2023-08-29 |
Family
ID=59730691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710522561.1A Active CN107120220B (en) | 2017-06-30 | 2017-06-30 | Fuel injection pump for preventing difficult starting of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107120220B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838326A (en) * | 2018-12-26 | 2019-06-04 | 南岳电控（衡阳）工业技术股份有限公司 | One kind prevents diesel oil of diesel engine blackening from improving structure injection pump |
| CN112648120A (en) * | 2020-12-23 | 2021-04-13 | 南岳电控（衡阳）工业技术股份有限公司 | Single-cylinder common-rail oil supply pump of blade-mounted oil transfer pump |
| CN112761841A (en) * | 2020-12-23 | 2021-05-07 | 南岳电控（衡阳）工业技术股份有限公司 | Fuel injection pump for preventing difficult starting of diesel engine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB748243A (en) * | 1953-12-23 | 1956-04-25 | Cav Ltd | Liquid fuel injection pumps for internal combustion engines |
| US4667638A (en) * | 1984-04-17 | 1987-05-26 | Nippon Soken, Inc. | Fuel injection apparatus for internal combustion engine |
| JP2003269279A (en) * | 2002-03-11 | 2003-09-25 | Yanmar Co Ltd | Accumulator-distributor type fuel injection pump |
| EP1486665A1 (en) * | 2002-03-15 | 2004-12-15 | Bosch Automotive Systems Corporation | Fuel injector |
| CN2903453Y (en) * | 2005-11-28 | 2007-05-23 | 潍柴动力股份有限公司 | Constant pressure oil outlet valve of diesel engine oil injection pump |
| JP2007205330A (en) * | 2006-02-06 | 2007-08-16 | Denso Corp | Common rail fuel injection device |
| CN202055964U (en) * | 2011-03-02 | 2011-11-30 | 南京威孚金宁有限公司 | Single-cylinder oil injection pump with solenoid valve for diesel engine |
| CN105156244A (en) * | 2015-08-21 | 2015-12-16 | 南岳电控(衡阳)工业技术有限公司 | Fuel injecting electronic unit pump of single-cylinder diesel engine |
| CN106121889A (en) * | 2016-08-30 | 2016-11-16 | 重庆红江机械有限责任公司 | High Enhanced diesel engine constant-pressure oil injection pump |
| CN206830356U (en) * | 2017-06-30 | 2018-01-02 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of injection pump for preventing diesel engine starting difficult |
-
2017
- 2017-06-30 CN CN201710522561.1A patent/CN107120220B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB748243A (en) * | 1953-12-23 | 1956-04-25 | Cav Ltd | Liquid fuel injection pumps for internal combustion engines |
| US4667638A (en) * | 1984-04-17 | 1987-05-26 | Nippon Soken, Inc. | Fuel injection apparatus for internal combustion engine |
| JP2003269279A (en) * | 2002-03-11 | 2003-09-25 | Yanmar Co Ltd | Accumulator-distributor type fuel injection pump |
| EP1486665A1 (en) * | 2002-03-15 | 2004-12-15 | Bosch Automotive Systems Corporation | Fuel injector |
| CN2903453Y (en) * | 2005-11-28 | 2007-05-23 | 潍柴动力股份有限公司 | Constant pressure oil outlet valve of diesel engine oil injection pump |
| JP2007205330A (en) * | 2006-02-06 | 2007-08-16 | Denso Corp | Common rail fuel injection device |
| CN202055964U (en) * | 2011-03-02 | 2011-11-30 | 南京威孚金宁有限公司 | Single-cylinder oil injection pump with solenoid valve for diesel engine |
| CN105156244A (en) * | 2015-08-21 | 2015-12-16 | 南岳电控(衡阳)工业技术有限公司 | Fuel injecting electronic unit pump of single-cylinder diesel engine |
| CN106121889A (en) * | 2016-08-30 | 2016-11-16 | 重庆红江机械有限责任公司 | High Enhanced diesel engine constant-pressure oil injection pump |
| CN206830356U (en) * | 2017-06-30 | 2018-01-02 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of injection pump for preventing diesel engine starting difficult |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838326A (en) * | 2018-12-26 | 2019-06-04 | 南岳电控（衡阳）工业技术股份有限公司 | One kind prevents diesel oil of diesel engine blackening from improving structure injection pump |
| CN109838326B (en) * | 2018-12-26 | 2024-05-28 | 南岳电控（衡阳）工业技术股份有限公司 | Improved fuel injection pump for preventing diesel oil of diesel engine from blackening |
| CN112648120A (en) * | 2020-12-23 | 2021-04-13 | 南岳电控（衡阳）工业技术股份有限公司 | Single-cylinder common-rail oil supply pump of blade-mounted oil transfer pump |
| CN112761841A (en) * | 2020-12-23 | 2021-05-07 | 南岳电控（衡阳）工业技术股份有限公司 | Fuel injection pump for preventing difficult starting of diesel engine |
| CN112648120B (en) * | 2020-12-23 | 2024-06-21 | 南岳电控（衡阳）工业技术股份有限公司 | Single-cylinder common rail oil supply pump of vane-type oil delivery pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107120220B (en) | 2023-08-29 |
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