CN102162419B - Double-cylinder line-up fuel injection pump for diesel engine - Google Patents
Double-cylinder line-up fuel injection pump for diesel engine Download PDFInfo
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- CN102162419B CN102162419B CN201110086961A CN201110086961A CN102162419B CN 102162419 B CN102162419 B CN 102162419B CN 201110086961 A CN201110086961 A CN 201110086961A CN 201110086961 A CN201110086961 A CN 201110086961A CN 102162419 B CN102162419 B CN 102162419B
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- fuel
- plunger
- housing
- oil
- diesel engine
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Abstract
The invention discloses a double-cylinder line-up fuel injection pump for a diesel engine, which comprises a shell, wherein a hold-on body component is fixedly arranged at the lower end of the shell; an isobaric delivery valve component arranged on the upper part of a plunger and barrel assembly is arranged in the shell; the plunger and barrel assembly is connected with a control sleeve gear; a control rack matched with the control sleeve gear is arranged on the side wall of the shell; and a gasket for the pre-stroke adjustment of fuel is arranged between the plunger and barrel assembly and the upper end face of the shell. The double-cylinder line-up fuel injection pump is reasonable in design and convenient for regulation, has a small volume, fewer motion parts and light weight, is suitable for high-speed direct injection, saves the fuel, is favorable for environmental protection; the double-cylinder line-up fuel injection pump is suitable for the high-speed direct injection diesel engine, so that the miniaturization, high speed and direct injection of the double-cylinder diesel engine with small cylinder diameters are realized; and the double-cylinder line-up fuel injection pump has the advantages of novel structure, high performance, low fuel consumption, low discharge, stable injection and the like.
Description
Technical field
The present invention relates to a kind of diesel injection pump, be specifically related to a kind of diesel engine twin-tub unit fuel injection pump.
Background technique
Existing diesel engine twin-tub unit fuel injection pump; Telescopic plunger coupled parts is housed in housing, and plunger bushing relies on adjusting pin to position, and compresses with delivery valve holder then; The fuel feeding uniformity of two cylinders can only rely on adjusting pin adjustment; But adjustment range is less, and adjustment the time must unclamp delivery valve holder, adjusts time-consuming.The plunger bushing lower end diameter is limited, but will play the effect of parts such as supporting regulating tooth cover, so poor rigidity, deforms easily in the use, causes plunger to be killed.The fuel feeding pretravel of two cylinders can only rely on the thickness of spring lower seat to adjust, and when adjustment, must take out Steel Cable Baffle Ring, locating stud and the body assembly of holding out, and changes spring lower seat then, adjusts to bother.Outlet valve adopts the throttle type outlet valve, and when rotating speed was high, the plunger cavity fuel pressure raise because of throttling action, and fuel delivery per cycle reduces; When rotating speed is low; Fuel delivery is increased, thereby improved speed characteristics, lift limiter is housed in the outlet valve; The difficult control of the lift of this outlet valve, and be prone to produce secondary injection, low speed during high speed and be prone to produce unstable spray and hyperbaric chamber is prone to produce phenomenons such as cavitation pitting.
Summary of the invention
Technical problem to be solved by this invention is to above-mentioned existing technology present situation, and provides volume little, and movement parts is few, in light weight; Be applicable to straight at a high speed spray; Fuel saving helps environmental protection, is applicable to the high speed DID engine; Make a kind of diesel engine twin-tub unit fuel injection pump of the miniaturization of little cylinder diameter two cylinder diesel engine, speed up, straight sprayization, have novel structure, advantages such as performance is good, fuel consumption rate is low, discharging is low, jetting stability.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: a kind of diesel engine twin-tub unit fuel injection pump, comprise housing, and the lower end of housing is set with the body assembly of holding out, and in housing, is provided with the constant pressure delivery valve assembly that is fitted in plunger coupled parts top; Plunger coupled parts is connected with the regulating tooth cover, is provided with the adjusting ratch assembly that matches with the regulating tooth cover at the sidewall of housing; Between plunger coupled parts and housing upper-end surface, be provided with the pad that is used for the adjustment of fuel feeding pretravel.
For optimizing technique scheme, the measure of taking also comprises:
Above-mentioned plunger coupled parts comprises plunger bushing that is arranged in the housing and the plunger that is slidingly arranged in the plunger bushing; Plunger bushing is shaped on the flange plate that matches with housing, on flange plate, is shaped on kidney slot; Be provided with the fastening piece that is used for mounting flange and housing upper-end surface in the described kidney slot, pad is arranged between the upper-end surface of flange plate and housing of plunger bushing.
Above-mentioned regulating tooth cover is connected with plunger bushing, is provided with the gear teeth on the surface of regulating tooth cover; Regulate the ratch assembly and comprise the adjusting ratch that is movably arranged in the housing sidewall, regulate ratch and be meshed, at the locating stud that outer installment has and the adjusting ratch is connected of housing with the gear teeth of regulating tooth cover.
The above-mentioned body assembly of holding out comprises the body of holding out, and is provided with roller pin and roller in the lower end of the body of holding out, and the sidewall of hold out body and housing is respectively arranged with corresponding through hole, in through hole, is provided with locating stud, Steel Cable Baffle Ring and capping.
Be provided with spring lower seat in the above-mentioned body of holding out, the lower end of plunger is connected with spring lower seat; The inwall of housing is fixedly connected with spring support, is provided with piston spring between spring support and the spring lower seat.
Above-mentioned constant pressure delivery valve assembly comprises delivery valve seat and the delivery valve holder that is arranged in the plunger bushing, is provided with High Pressure Seal Washer between delivery valve seat and the plunger bushing; Delivery valve seat and delivery valve holder match to merge and constitute a fuel-displaced valve pocket, in fuel-displaced valve pocket, are provided with fuel-displaced spool and oil outlet valve spring; Be provided with trimmer valve, spring seat and spring in the port of fuel-displaced spool, between trimmer valve and spring seat, be provided with steel ball.
The sidewall of above-mentioned housing is provided with the fuel inlet fitting assembly, and the fuel inlet fitting assembly comprises fuel inlet fitting, is arranged on a plastics ball and Steel Cable Baffle Ring in the fuel inlet fitting assembly.
Above-mentioned locating stud is provided with plain washer and cotter pin.
Above-mentioned plunger bushing is provided with O RunddichtringO at least between the inwall of housing.
Compared with prior art; A kind of diesel engine twin-tub unit fuel injection pump of the present invention; Adopt the flange-type plunger coupled parts, improved overall tightness, reduction seepage probability, the raising Injection Pump injection pressure of Injection Pump, reduce engine fuel consumption and discharging; Reduce the mating face machining accuracy of plunger bushing and constant pressure delivery valve assembly simultaneously, therefore further reduced cost of production.Between plunger coupled parts and housing upper-end surface, be added with fuel feeding pretravel adjustment pad, fuel feeding pretravel is easy to adjust.Two place's kidney slots are arranged on the plunger bushing, guaranteed the revolution space of plunger bushing, thereby be convenient to adjust the fuel feeding uniformity of two cylinders, and easy to adjust.The tappet body of Injection Pump adopts the roller body structure, has effectively reduced friction factor, has prolonged the working life of crankshaft of diesel engine and Injection Pump and has reduced the noise that is brought by crankshaft of diesel engine and Injection Pump gearing friction.Outlet valve adopts the constant pressure delivery valve assembly, can control the pressure that influences plunger cavity and fuel-displaced valve pocket, the secondary injection and the uneven injection of elimination diesel engine, the advantages such as fuel delivery that can under fixing operating mode, keep relative stability.The present invention is reasonable in design, and is easy to adjust, and volume is little; Movement parts is few, in light weight, is applicable to straight at a high speed spray, fuel saving; Help environmental protection; Be applicable to the high speed DID engine, make the miniaturization of little cylinder diameter two cylinder diesel engine, speed up, straight sprayization, have novel structure, advantages such as performance is good, fuel consumption rate is low, discharging is low, jetting stability.
Description of drawings
Fig. 1 is the structural representation of inventive embodiments;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is that the B of Fig. 1 is to view;
Fig. 4 is the enlarged diagram of the constant pressure delivery valve assembly among Fig. 2;
Fig. 5 is the structural representation of the plunger bushing among Fig. 2;
Fig. 6 is the plan view of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is extremely shown in Figure 6 to be structural representation of the present invention.
Reference character wherein is: outlet valve helmet 1; Delivery valve holder 2; Oil outlet valve spring 3; Pad 4; Constant pressure delivery valve assembly 5; Fuel-displaced spool 5a; Trimmer valve 5b; Steel ball 5c; Spring seat 5d; Spring 5e; Delivery valve seat 5f; High Pressure Seal Washer 6; Plunger coupled parts 7; Plunger bushing 71; Flange plate 71a; Kidney slot 71b; Plunger 72; O RunddichtringO 7c; O RunddichtringO 7d; Housing 8; Regulating tooth cover 9; Spring support 10; Piston spring 11; Capping 12; Steel Cable Baffle Ring 13; Locating stud 14; Spring lower seat 15; The body assembly 16 of holding out; Body 16a holds out; Roller pin 16b; Roller 16c; Regulate ratch assembly 17; Regulate ratch 17a; Locating stud 17b; Plain washer 17c; Cotter pin 17d; Fuel inlet fitting assembly 20; Fuel inlet fitting 20a; Plastics ball 20b; Steel Cable Baffle Ring 20c; Screw 21.
A kind of diesel engine twin-tub unit fuel injection pump of the present invention is applicable to the little cylinder diameter high-speed diesel engine of twin-tub; Also be most important parts in the oil-fired system; Its function is to improve fuel pressure; According to the requirement of diesel engine condition, a certain amount of fuel oil is supplied with oil sprayer spray into the firing chamber in correct time.The requirement of diesel engine twin-tub unit fuel injection pump is mainly: the fuel delivery of diesel engine twin-tub unit fuel injection pump should satisfy the needs of diesel engine under various operating modes, loads promptly that fuel delivery increases when big, and load hour fuel delivery reduces.Different with the method that mixed gas forms according to combustion-chamber shape, diesel engine twin-tub unit fuel injection pump must provide pressure sufficiently high fuel oil to oil sprayer, to guarantee good atomization quality.
A kind of diesel engine twin-tub unit fuel injection pump of present embodiment comprises housing 8, and the lower end of housing 8 is set with the body assembly 16 of holding out, and in housing 8, is provided with the constant pressure delivery valve assembly 5 that is fitted in plunger coupled parts 7 tops.Plunger coupled parts 7 is connected with regulating tooth cover 9, is provided with the adjusting ratch assembly 17 that matches with regulating tooth cover 9 at the sidewall of housing 8.Between plunger coupled parts 7 and housing 8 upper-end surfaces, be provided with the pad 4 that is used for the adjustment of fuel feeding pretravel.
Plunger coupled parts 7 comprises plunger bushing 71 that is arranged in the housing 8 and the plunger 72 that is slidingly arranged in the plunger bushing 71.Plunger bushing 71 is shaped on the flange plate 71a that matches with housing 8, on flange plate 71a, is shaped on kidney slot 71b.In kidney slot 71b, be provided with the fastening piece that is used for mounting flange 71a and housing 8 upper-end surfaces, pad 4 is arranged between the upper-end surface of flange plate 71a and housing 8 of plunger bushing 71.Be provided with O RunddichtringO 7c and O RunddichtringO 7d between the inwall of plunger bushing 71 and housing 8.
Regulating tooth cover 9 is connected with plunger bushing 71, overlaps 9 surface at regulating tooth and is provided with the gear teeth.Regulate ratch assembly 17 and comprise the adjusting ratch 17a that is movably arranged in housing 8 sidewalls, regulate ratch 17a and be meshed, at the locating stud 17b that outer installment has and adjusting ratch 17a is connected of housing 8 with the gear teeth of regulating tooth cover 9.Locating stud 17b is provided with plain washer 17c and cotter pin 17d.
The body assembly 16 of holding out comprises the body 16a that holds out, and is provided with roller pin 16b and roller 16c in the lower end of the body 16a that holds out, and the sidewall of hold out body 16a and housing 8 is respectively arranged with corresponding through hole, in through hole, is provided with locating stud 14, Steel Cable Baffle Ring 13 and capping 12.
Holding out is provided with spring lower seat 15 in the body 16a, and the lower end of plunger 72 is connected with spring lower seat 15.The inwall of housing 8 is fixedly connected with spring support 10, is provided with piston spring 11 between spring support 10 and the spring lower seat 15.
Constant pressure delivery valve assembly 5 comprises delivery valve seat 5f and the delivery valve holder 2 that is arranged in the plunger bushing 71.The upper end of delivery valve holder 2 is fitted with outlet valve helmet 1, is provided with High Pressure Seal Washer 6 between delivery valve seat 5f and the plunger bushing 71.Delivery valve seat 5f and delivery valve holder 2 match to merge and constitute a fuel-displaced valve pocket, in fuel-displaced valve pocket, are provided with fuel-displaced spool 5a and oil outlet valve spring 3.Be provided with trimmer valve 5b, spring seat 5d and spring 5e in the port of fuel-displaced spool 5a, between trimmer valve 5b and spring seat 5d, be provided with steel ball 5c.
The sidewall of housing 8 is provided with fuel inlet fitting assembly 20, and fuel inlet fitting assembly 20 comprises fuel inlet fitting 20a, is arranged on plastics ball 20b and Steel Cable Baffle Ring 20c in the fuel inlet fitting assembly 20.
The assembling of present embodiment is following.It is qualified that constant pressure delivery valve assembly 5 is matched in pairs and detected with plunger coupled parts 7.Plunger coupled parts 7 usefulness screws 21 are fixing through kidney slot 71b on the plunger bushing and housing 8.Plunger bushing 71 upper ends pack into successively High Pressure Seal Washer 6, constant pressure delivery valve assembly 5, oil outlet valve spring 3 screw in delivery valve holder 2.Load onto in the middle of the housing 8 and regulate ratch assembly 17, and on housing 8, load onto locating stud 17b.The helical pitch hole of housing 8 is equipped with regulating tooth cover 9, spring support 10, piston spring 11, spring lower seat 15, the body assembly 16 of holding out from top to bottom successively, and makes regulating tooth cover 9 and regulate 17 engagements of ratch assembly.The body assembly 16 usefulness locating studs 14 of holding out are located with housing 8, and capping 12 is housed outside the locating stud 14, and fixing with Steel Cable Baffle Ring 13.Fuel inlet fitting assembly 20 is equipped with in housing 8 sides, links to each other with housing 8 inner chambers.
During debugging, adjust the fuel feeding pretravel of two cylinders, adjust the fuel feeding uniformity of two cylinders through the rotation of plunger bushing 71 through adjusting pad 4.
Diesel engine twin-tub unit fuel injection pump provides pressure sufficiently high fuel oil to oil sprayer, is an oil suction and the process of pressing oil, and it is to be accomplished by the to-and-fro motion of plunger 72 in plunger bushing 71.When plunger 72 upper-end surfaces were positioned at plunger bushing 71 oil inlet hole lower ends, plunger bushing 71 communicated with the interior oil duct of diesel engine, and fuel oil is filled with the grease chamber rapidly.When cam pushes up when holding out body assembly 16, plunger 72 just rises.Till before beginning to move upward to plunger bushing 71 oil inlet holes and blocked by plunger 72 upper-end surfaces from plunger 72, at this section in the period, because the motion of plunger 72, fuel oil is extruded from the grease chamber, flows to oil duct.When plunger 72 blocks plunger bushing 71 oil inlet holes, just begin to press oily process.Plunger 72 is up, and oil pressure sharply raises in the grease chamber.When pressure surpasses spring force and the top oil pressure of oil outlet valve spring 3, just back down outlet valve 5a, fuel oil is pressed into high-pressure oil pipe delivers to oil sprayer.When plunger 72 continues to move upward; Fuel feeding is also continuing always; Till pressing oily process to last till when control oil groove limit on the plunger 72 gets out of the way plunger bushing 71 oil inlet holes; When oilhole one is opened, high pressure oil is oil-break groove on plunger 72 and plunger bushing 71 oil inlet holes from the grease chamber just, and play the spill port effect and flow in the oil duct this moment.This moment, the oil pressure of plunger bushing 71 grease chambeies reduced rapidly, fuel-displaced spool 5a oil pressure effect in the spring force of oil outlet valve spring 3 and high-pressure oil pipe delivery valve seat 5f that falls back, and oil sprayer stops oil spout immediately.
In order to adapt to the requirement of diesel engine load, the fuel delivery of diesel engine twin-tub unit fuel injection pump must be regulated in the scope that maximum fuel delivery full load is stopped to zero fuel feeding.The adjusting of fuel delivery realizes plunger 72 rotations through regulating ratch assembly 17 pulling regulating tooth covers 9.When plunger 72 rotated, fuel feeding began constant, and fuel feeding finish-time, then because plunger 72 is controlled the oil groove limits that the change of plunger bushing 71 oil inlet hole positions has been changed.The angle of rotating along with plunger 72 is different, and the effective travel of plunger 72 is also just different, thereby fuel delivery also changes thereupon.
Most preferred embodiment of the present invention is illustrated, and various variations or the remodeling made by those of ordinary skills can not depart from the scope of the present invention.
Claims (5)
1. a diesel engine twin-tub unit fuel injection pump comprises housing (8), it is characterized in that: the lower end of said housing (8) is set with the body assembly (16) of holding out, and in housing (8), is provided with the constant pressure delivery valve assembly (5) that is fitted in plunger coupled parts (7) top; Described plunger coupled parts (7) is connected with regulating tooth cover (9), is provided with the adjusting ratch assembly (17) that matches with regulating tooth cover (9) at the sidewall of housing (8); Between described plunger coupled parts (7) and housing (8) upper-end surface, be provided with the pad (4) that is used for the adjustment of fuel feeding pretravel; Described plunger coupled parts (7) comprises plunger bushing (71) plunger (72) interior with being slidingly arranged in plunger bushing (71) that is arranged in the housing (8); Described plunger bushing (71) is shaped on the flange plate (71a) that matches with housing (8), on flange plate (71a), is shaped on kidney slot (71b); Be provided with the fastening piece that is used for mounting flange (71a) and housing (8) upper-end surface in the described kidney slot (71b), described pad (4) is arranged between the upper-end surface of flange plate (71a) and housing (8) of plunger bushing (71); Described regulating tooth cover (9) is connected with plunger bushing (71), is provided with the gear teeth on the surface of regulating tooth cover (9); Described adjusting ratch assembly (17) comprises the adjusting ratch (17a) that is movably arranged in housing (8) sidewall; Described adjusting ratch (17a) is meshed with the gear teeth of regulating tooth cover (9), at the locating stud (17b) that outer installment has and adjusting ratch (17a) is connected of housing (8); The described body assembly (16) of holding out comprises the body of holding out (16a); Be provided with roller pin (16b) and roller (16c) in the lower end of the body of holding out (16a); The sidewall of body (16a) and housing (8) of holding out is respectively arranged with corresponding through hole, in through hole, is provided with locating stud (14), Steel Cable Baffle Ring (13) and capping (12); Described constant pressure delivery valve assembly (5) comprises delivery valve seat (5f) and the delivery valve holder (2) that is arranged in the plunger bushing (71), is provided with High Pressure Seal Washer (6) between delivery valve seat (5f) and the plunger bushing (71); Described delivery valve seat (5f) and delivery valve holder (2) match to merge and constitute a fuel-displaced valve pocket, in described fuel-displaced valve pocket, are provided with fuel-displaced spool (5a) and oil outlet valve spring (3); Be provided with trimmer valve (5b), spring seat (5d) and spring (5e) in the port of described fuel-displaced spool (5a), between trimmer valve (5b) and spring seat (5d), be provided with steel ball (5c); When plunger (72) upper-end surface was positioned at plunger bushing (71) oil inlet hole lower end, described plunger bushing (71) communicated with the interior oil duct of diesel engine, and fuel oil is filled with the grease chamber; When cam pushes up when holding out body assembly (16), described plunger (72) rises, and fuel oil flows to oil duct from the grease chamber; On described plunger (72), be about to plunger bushing (71) when oil inlet hole blocks, and oil pressure raises in the grease chamber; Described fuel-displaced spool (5a) is opened, and fuel oil is pressed into oil sprayer; Described plunger (72) continues the up described oil inlet hole that gets out of the way, and oil gets into oil inlet hole from the grease chamber, and the oil pressure of plunger bushing (71) grease chamber reduces rapidly, and described fuel-displaced spool (5a) falls back, and oil sprayer stops oil spout.
2. a kind of diesel engine twin-tub unit fuel injection pump according to claim 1 is characterized in that: be provided with spring lower seat (15) in the described body of holding out (16a), the lower end of said plunger (72) is connected with spring lower seat (15); The inwall of said housing (8) is fixedly connected with spring support (10), is provided with piston spring (11) between described spring support (10) and the spring lower seat (15).
3. a kind of diesel engine twin-tub unit fuel injection pump according to claim 2; It is characterized in that: the sidewall of said housing (8) is provided with fuel inlet fitting assembly (20), and described fuel inlet fitting assembly (20) comprises fuel inlet fitting (20a), is arranged on a plastics ball (20b) and Steel Cable Baffle Ring (20c) in the fuel inlet fitting assembly (20).
4. a kind of diesel engine twin-tub unit fuel injection pump according to claim 3 is characterized in that: the described locating stud (17b) that is connected with adjusting ratch (17a) is provided with plain washer (17c) and cotter pin (17d).
5. a kind of diesel engine twin-tub unit fuel injection pump according to claim 4, it is characterized in that: described plunger bushing (71) is provided with O RunddichtringO at least between the inwall of housing (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110086961A CN102162419B (en) | 2011-04-01 | 2011-04-01 | Double-cylinder line-up fuel injection pump for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110086961A CN102162419B (en) | 2011-04-01 | 2011-04-01 | Double-cylinder line-up fuel injection pump for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102162419A CN102162419A (en) | 2011-08-24 |
| CN102162419B true CN102162419B (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110086961A Expired - Fee Related CN102162419B (en) | 2011-04-01 | 2011-04-01 | Double-cylinder line-up fuel injection pump for diesel engine |
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| Country | Link |
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| CN (1) | CN102162419B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047784A (en) * | 2013-03-15 | 2014-09-17 | 江苏普盛动力股份有限公司 | Oil stop electromagnetic valve for oil injection pump of double-cylinder one-piece engine |
| CN106640456B (en) * | 2016-12-27 | 2018-05-29 | 清华大学 | For the pump rail body of internal combustion engine fuel injection system |
| CN107575325B (en) * | 2017-10-20 | 2024-02-27 | 江苏常发农业装备股份有限公司 | Isobaric mechanical oil pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878721A (en) * | 1997-06-10 | 1999-03-09 | Hitachi Construction Machinery Co., Ltd. | Engine control system for construction machine |
| CN2581713Y (en) * | 2002-09-05 | 2003-10-22 | 南京威孚金宁有限公司 | Environment protection type single cylinder oil injection pump |
| CN2771501Y (en) * | 2004-12-31 | 2006-04-12 | 江西汇尔油泵油嘴有限公司 | Two-cylinder line-up oil injection pump for diesel engine |
| US7422165B2 (en) * | 2004-10-20 | 2008-09-09 | Magneti Marelli Powertrain S.P.A. | Fuel injector with electromagnetic actuation of the plunger |
| CN202031748U (en) * | 2011-04-01 | 2011-11-09 | 宁波舜田良源油嘴油泵有限公司 | Double-cylinder distributing type injection pump for diesel engine |
-
2011
- 2011-04-01 CN CN201110086961A patent/CN102162419B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878721A (en) * | 1997-06-10 | 1999-03-09 | Hitachi Construction Machinery Co., Ltd. | Engine control system for construction machine |
| CN2581713Y (en) * | 2002-09-05 | 2003-10-22 | 南京威孚金宁有限公司 | Environment protection type single cylinder oil injection pump |
| US7422165B2 (en) * | 2004-10-20 | 2008-09-09 | Magneti Marelli Powertrain S.P.A. | Fuel injector with electromagnetic actuation of the plunger |
| CN2771501Y (en) * | 2004-12-31 | 2006-04-12 | 江西汇尔油泵油嘴有限公司 | Two-cylinder line-up oil injection pump for diesel engine |
| CN202031748U (en) * | 2011-04-01 | 2011-11-09 | 宁波舜田良源油嘴油泵有限公司 | Double-cylinder distributing type injection pump for diesel engine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-339189A 1998.12.22 |
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