CN109268179A - A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber - Google Patents
A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber Download PDFInfo
- Publication number
- CN109268179A CN109268179A CN201811238847.8A CN201811238847A CN109268179A CN 109268179 A CN109268179 A CN 109268179A CN 201811238847 A CN201811238847 A CN 201811238847A CN 109268179 A CN109268179 A CN 109268179A
- Authority
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- China
- Prior art keywords
- valve
- pressure
- accumulation chamber
- common rail
- switch electromagnetic
- Prior art date
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- Pending
Links
- 238000009825 accumulation Methods 0.000 title claims abstract description 33
- 239000000446 fuel Substances 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims description 35
- 239000000295 fuel oil Substances 0.000 claims description 6
- 238000011897 real-time detection Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000010721 machine oil Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 3
- 206010008469 Chest discomfort Diseases 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
-
- 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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/022—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type having an accumulator storing pressurised fuel during pumping stroke of the piston for subsequent delivery to the injector
-
- 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
-
- 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
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A kind of switch electromagnetic valve formula single cylinder common rail pump the present invention provides head with pressure accumulation chamber, the single cylinder common rail pump include tappet body, plunger matching parts, inlet valve, delivery valve, switch electromagnetic valve, pressure security valve member, pressure accumulation chamber, pressure sensor, strainer and oil inlet；External form of the present invention is compact, design of part is simple, easy to maintenance, low cost, optimizes the fuel feeding moment, can improve a series of performance indicators such as diesel engine external characteristics, noise, oil consumption, vibration.
Description
Technical field
The present invention relates to diesel engine high-pressure co-rail fuel oil pump technical fields, and in particular to a kind of switch of the head with pressure accumulation chamber
Electromagnetic type single cylinder common rail pump.
Background technique
For a long time, single cylinder diesel is widely used in backup power source, agriculture machine because of its reason such as cheap, light
The every profession and trades such as tool, water lifting machinery, engineering machinery, peculiar to vessel.The core of single cylinder diesel is fuel injection system, and the system is by machinery
Injection pump, high-pressure oil pipe and the big component of fuel injector three composition.Mechanical spray oil pump connects composition system by high-pressure oil pipe with fuel injector
System.
The characteristics of due to mechanical injection pump, charge oil pressure is low, and injection timing can not be adjusted, and causes it every year into atmosphere
Discharge a large amount of pernicious gas.In recent years, the raising of national environmental protection emission request, single cylinder diesel domestic market share gradually by
Compression.The backwardness of emission level is badly in need of the update of technology so that it is gradually repelled by market.
China carried out 4 discharge standard of non-rice habitats state in 2018 comprehensively, and wherein single cylinder diesel is just in the limitation of the regulation
In range.After emission regulation upgrading, the common rail system of single cylinder diesel will become the basic of Single Cylinder Diesel Engine Emission technology upgrading
Property solution.Stable high-pressure injection may be implemented not only to improve combustion process in the common rail system of single cylinder diesel, may be used also
To be independently controlled to injection characteristics, there are engine power performance, economy and emission performance and greatly improve and improve.It is single
Cylinder common rail pump is the important composition component of the excellent common rail system of this environmental-protecting performance, is able to achieve the rationalization control to common rail pressure
System.Single cylinder common rail pump is easy to maintenance, low cost, optimizes the fuel feeding moment, can improve diesel engine external characteristics, noise, oil consumption, vibration etc.
A series of performance indicators.
Summary of the invention
A kind of switch electromagnetic valve formula single cylinder common rail pump the present invention provides head with pressure accumulation chamber, the single cylinder common rail pump packet
Include tappet body, plunger matching parts, inlet valve, delivery valve, switch electromagnetic valve, pressure security valve member, pressure accumulation chamber, pressure sensor,
Strainer and oil inlet；The plunger matching parts includes plunger, plunger bushing, plunger snap ring and plunger spring, the inlet valve include into
Oil valve core, oil inlet valve seat；The delivery valve includes delivery valve seat, fuel-displaced spool, oil outlet valve spring and the spring seat of honour；The switch
Solenoid valve includes electromagnet, reset spring, armature；The pressure security valve member, including adjusting gasket, spool, steel ball, valve
Seat, spring, valve body；The pressure sensor is threaded in pressure accumulation chamber side, for real-time detection pressure accumulation cavity pressure, and
The opening time of regulating switch solenoid valve is connect, closed-loop control is carried out；The pressure accumulation chamber is set to single cylinder common rail head, the storage
Pressure chamber is directly screwed in plunger bushing head position, is accurately processed by the first tooth to plunger bushing and pressure accumulation chamber connection screw thread with circle number
Control is maintained within the scope of 0 ± 10 degree to ensure to tighten the circumferential position of rear pressure accumulation chamber and plunger bushing；The pressure accumulation chamber instead of
Common rail pipe compares the common rail pipe of conventional diesel engine high pressure co-rail system, reduces individually fixed requirement and eliminates pump to rail
High-pressure oil pipe, keep system structure compact, have the function of stablizing fuel pressure；The pressure accumulation chamber other side is equipped with pressure security
Valve member, the fuel pressure that the pressure security valve member can be intracavitary to pressure accumulation carry out overpressure protection；It is set before the inlet valve
There is strainer, the strainer is made of the stainless steel material with weak magnetic, can prevent impurity in the fuel oil of front end from entering plunger matching parts
Cause couple clamping stagnation；The oil inlet of the single cylinder common rail pump is arranged in the other side opposite with switch electromagnetic valve, passes through plunger bushing
Internal oil duct is communicated with inlet valve.
Further, the switch electromagnetic valve is for adjusting starting oil inlet time and oil inlet quantity, the switch electromagnetic valve one
Directly cause fuel-flow control response rapidly in zone of positive pressure and close to plunger cavity position, the switch electromagnetic valve is fuel cut-off control mould
Formula.
Further, it is opened inside the switch electromagnetic valve equipped with the reset spring that can enable oil inlet valve core reset when power is off
Powered-down magnet valve is tightened by the tight cap of solenoid valve with plunger bushing and is linked together.
Further, the inlet valve is the check valve with armature, and when switch electromagnetic valve is powered, inlet valve is closed, switch
Inlet valve is opened when solenoid valve no power, and the armature is fixed by welding with oil inlet spool.
Further, the middle and lower part design of the plunger bushing has oil return inclined hole, and plunger cavity is interior by between plunger matching parts top
The fuel oil that gap leaks down can return to low pressure chamber before inlet valve by this channel, prevent excessive fuel leakage to lower part machine oil chamber,
Cause oil dilution.
External form of the present invention is compact, design of part is simple, easy to maintenance, low cost, optimizes the fuel feeding moment, can improve diesel engine
A series of performance indicators such as external characteristics, noise, oil consumption, vibration.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is plunger matching parts structural schematic diagram of the present invention.
Fig. 3 is inlet valve structural schematic diagram of the present invention.
Fig. 4 is delivery valve structure schematic diagram of the present invention.
Fig. 5 is switch electromagnetic valve structural schematic diagram of the present invention.
Fig. 6 is pressure safety valve structural schematic diagram of the present invention.
Specific embodiment
With reference to Fig. 1-6, low-voltage fuel enters single cylinder common rail pump by oil inlet 10, flows through 22 internal galleries of plunger bushing and come
Before strainer 9, the adsorbable ferrous metal of strainer 9, larger particles are nonmetallic and slender type nonmetallic inclusion, raising enter inlet valve
With the fuel oil cleannes of high pressure chest；Low-voltage fuel enters inlet valve 3 by the filtering of strainer 9；Inlet valve 3 is with the unidirectional of armature
Valve, when solenoid valve 5 is powered, inlet valve 3 is closed, and when no power opens, and armature 53 is fixed together by welding with spool 31.
Low-voltage fuel enters plunger matching parts 2 by inlet valve 3, and inlet valve 3 is closed.It is transported by the axial reciprocating for body 1 of holding out
Dynamic uplink pushes plunger 21, compresses to low-voltage fuel, is translated into high pressure fuel.When pressure reaches opening for delivery valve 4
Open pressure and be higher than in pressure accumulation chamber 7 oil pressure when, delivery valve 4 is opened, and high pressure fuel is pumped in pressure accumulation chamber 7, and pressure accumulation chamber 7 has
Stablize the effect of fuel pressure.When 21 downlink of plunger, inlet valve 3 is opened, and carries out a new circulation.
Fuel pressure in 8 real-time detection pressure accumulation chamber 7 of pressure sensor, feedback data are used for regulating switch solenoid valve 5.Pressure
Power safety valve 6 plays the role of protection common rail pump, prevents oil supply system superpressure, when fuel pressure is higher than setting for pressure safety valve 6
When evaluation, pressure safety valve 6 is opened.
Claims (5)
1. a kind of switch electromagnetic valve formula single cylinder common rail pump of head with pressure accumulation chamber, it is characterised in that: the single cylinder common rail pump includes
Tappet body (1), inlet valve (3), delivery valve (4), switch electromagnetic valve (5), pressure security valve member (6), stores plunger matching parts (2)
Press chamber (7), pressure sensor (8), strainer (9) and oil inlet (10)；The plunger matching parts (2) includes plunger (21), plunger bushing
(22), plunger snap ring (23) and plunger spring (24), the inlet valve (3) include oil inlet spool (31), oil inlet valve seat (32),；
The delivery valve (4) includes delivery valve seat (41), fuel-displaced spool (42), oil outlet valve spring (43) and the spring seat of honour (44)；It is described
Switch electromagnetic valve (5) includes electromagnet (51), reset spring (52), armature (53)；The pressure security valve member (6), including
Adjusting gasket (61), spool (62), steel ball (63), valve seat (64), spring (65), valve body (66)；Pressure sensor (8) spiral shell
Line is connected to pressure accumulation chamber (7) side, is used for real-time detection pressure accumulation chamber (7) interior pressure, and regulating switch solenoid valve (5) are opened indirectly
It opens the time, carries out closed-loop control；The pressure accumulation chamber (7) is set to single cylinder common rail head, and the pressure accumulation chamber (7) is directly screwed in
Plunger bushing (22) head position accurately processes control with circle number by the first tooth to plunger bushing (22) and pressure accumulation chamber (7) connection screw thread
It makes to ensure to tighten the circumferential position of rear pressure accumulation chamber (7) and plunger bushing (22) and be maintained within the scope of 0 ± 10 degree；The pressure accumulation chamber
(7) instead of common rail pipe, the common rail pipe of conventional diesel engine high pressure co-rail system is compared, reduces individually fixed requirement and cancellation
Pump arrives the high-pressure oil pipe of rail, keeps system structure compact, has the function of stablizing fuel pressure；Pressure accumulation chamber (7) other side
Equipped with pressure security valve member (6), the pressure security valve member (6) can surpass the fuel pressure in pressure accumulation chamber (7)
Pressure protection；Strainer (9) are equipped with before the inlet valve (3), the strainer (9) is made of the stainless steel material with weak magnetic, can be with
It prevents in the fuel oil of front end impurity to enter plunger matching parts (2) and causes couple clamping stagnation；The oil inlet (10) of the single cylinder common rail pump is arranged
In the other side opposite with switch electromagnetic valve (5), communicated by the internal oil duct of plunger bushing (22) with inlet valve (3).
2. a kind of switch electromagnetic valve formula single cylinder common rail pump of the head according to claim 1 with pressure accumulation chamber, it is characterised in that:
The switch electromagnetic valve (5) is constantly in zone of positive pressure for adjusting starting oil inlet time and oil inlet quantity, the switch electromagnetic valve (5)
Cause fuel-flow control response rapidly with close to plunger cavity position, the switch electromagnetic valve (5) is fuel cut-off control mode.
3. a kind of switch electromagnetic valve formula single cylinder common rail pump of the head according to claim 1 or 2 with pressure accumulation chamber, feature exist
In: equipped with the reset spring (52) that oil inlet spool (31) can be enabled to reset when power is off, switch electricity inside the switch electromagnetic valve (5)
Magnet valve (5) is tightened by the tight cap of solenoid valve (12) with plunger bushing (22) and is linked together.
4. a kind of switch electromagnetic valve formula single cylinder common rail pump of the head according to claim 1 with pressure accumulation chamber, it is characterised in that:
The inlet valve (3) is the check valve with armature (53), and when switch electromagnetic valve (5) are powered, inlet valve (3) is closed, and switchs electromagnetism
Inlet valve (3) is opened when valve (5) no power, and the armature (53) is fixed with oil inlet spool (31) by welding.
5. a kind of switch electromagnetic valve formula single cylinder common rail pump of the head according to claim 1 with pressure accumulation chamber, it is characterised in that:
The middle and lower part design of the plunger bushing (22) has oil return inclined hole (11), in plunger cavity down by plunger matching parts (2) upper gap
The fuel oil of leakage can return to low pressure chamber before inlet valve (3) by this channel, prevent excessive fuel leakage to lower part machine oil chamber, cause
Oil dilution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238847.8A CN109268179A (en) | 2018-10-23 | 2018-10-23 | A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238847.8A CN109268179A (en) | 2018-10-23 | 2018-10-23 | A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109268179A true CN109268179A (en) | 2019-01-25 |
Family
ID=65193202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811238847.8A Pending CN109268179A (en) | 2018-10-23 | 2018-10-23 | A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268179A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763925A (en) * | 2019-01-30 | 2019-05-17 | 珠海安瑾动力科技有限公司 | A kind of high-pressure fuel-feed pump pump head component |
| CN110671251A (en) * | 2019-09-25 | 2020-01-10 | 南京威孚金宁有限公司 | VE dispensing pump mechanical oil cut-off mechanism and oil cut-off method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244329A (en) * | 2013-04-28 | 2013-08-14 | 哈尔滨工程大学 | High-pressure common-rail fuel system with electric monoblock pumps |
| CN104847554A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electric control unit pump for diesel machine |
| CN105952561A (en) * | 2016-06-18 | 2016-09-21 | 常州博瑞油泵油嘴有限公司 | Common rail pump component of high-pressure common rail pump of single-cylinder diesel |
| CN105952562A (en) * | 2016-06-18 | 2016-09-21 | 常州博瑞油泵油嘴有限公司 | Composite high-pressure common rail pump for single cylinder diesel engine |
| CN209145750U (en) * | 2018-10-23 | 2019-07-23 | 思达耐精密机电（常熟）有限公司 | A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber |
-
2018
- 2018-10-23 CN CN201811238847.8A patent/CN109268179A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244329A (en) * | 2013-04-28 | 2013-08-14 | 哈尔滨工程大学 | High-pressure common-rail fuel system with electric monoblock pumps |
| CN104847554A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electric control unit pump for diesel machine |
| CN105952561A (en) * | 2016-06-18 | 2016-09-21 | 常州博瑞油泵油嘴有限公司 | Common rail pump component of high-pressure common rail pump of single-cylinder diesel |
| CN105952562A (en) * | 2016-06-18 | 2016-09-21 | 常州博瑞油泵油嘴有限公司 | Composite high-pressure common rail pump for single cylinder diesel engine |
| CN209145750U (en) * | 2018-10-23 | 2019-07-23 | 思达耐精密机电（常熟）有限公司 | A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763925A (en) * | 2019-01-30 | 2019-05-17 | 珠海安瑾动力科技有限公司 | A kind of high-pressure fuel-feed pump pump head component |
| CN110671251A (en) * | 2019-09-25 | 2020-01-10 | 南京威孚金宁有限公司 | VE dispensing pump mechanical oil cut-off mechanism and oil cut-off method thereof |
| CN110671251B (en) * | 2019-09-25 | 2023-07-07 | 南京威孚金宁有限公司 | Mechanical oil-cutting mechanism of VE dispensing pump and oil-cutting method thereof |
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