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CN106014966B - Single cylinder diesel oil transfer pump - Google Patents

Single cylinder diesel oil transfer pump Download PDF

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Publication number
CN106014966B
CN106014966B CN201610602968.0A CN201610602968A CN106014966B CN 106014966 B CN106014966 B CN 106014966B CN 201610602968 A CN201610602968 A CN 201610602968A CN 106014966 B CN106014966 B CN 106014966B
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CN
China
Prior art keywords
rotor
oil
transmission shaft
single cylinder
cylinder diesel
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.)
Active
Application number
CN201610602968.0A
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Chinese (zh)
Other versions
CN106014966A (en
Inventor
孙晓顺
黄萧
杨后松
李传金
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Jinhu Fuel Feed Pump Co Ltd
Original Assignee
Jiangsu Jinhu Fuel Feed Pump Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Jinhu Fuel Feed Pump Co Ltd filed Critical Jiangsu Jinhu Fuel Feed Pump Co Ltd
Priority to CN201610602968.0A priority Critical patent/CN106014966B/en
Publication of CN106014966A publication Critical patent/CN106014966A/en
Application granted granted Critical
Publication of CN106014966B publication Critical patent/CN106014966B/en
Active legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/04Feeding by means of driven pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023Axial sealings for working fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/30Casings or housings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The invention discloses a kind of single cylinder diesel oil transfer pumps, comprising: the pump housing with certain inner space, the pump housing are communicatively equipped with axis hole and rotor slot;Transmission shaft in the axis hole;And the rotor assembly in the rotor slot, wherein, the rotor assembly is set on the transmission shaft, the rotor assembly includes the internal rotor and outer rotor being successively set on the transmission shaft from inside to outside, the internal rotor is selectively connected with the transmission shaft by a dismountable trundle, the internal rotor is rotated with the rotation of the transmission shaft, and the outer rotor makees eccentric motion with the internal rotor.According to the present invention, can obtain ensures to reduce part and process and structure complexity under the premise of reaching identical requirement, reduces processing, assembly cost, reduces leakage incidence, improves the beneficial effect of pump oil and assembly efficiency.

Description

Single cylinder diesel oil transfer pump
Technical field
The present invention relates to a kind of oil transfer pump, in particular to a kind of single cylinder diesel oil transfer pump.
Background technique
With Single Cylinder Diesel Engine Emission code enforcement, former Single Cylinder Diesel Engine Emission is not able to satisfy existing emission regulation demands, needs Single cylinder diesel structure innovation is improved to reach emission regulation demands.Wherein single cylinder diesel fuel system part is important Improve part.Single cylinder diesel oil transfer pump is single cylinder diesel fuel system part important component, and single cylinder diesel oil transfer pump is made With being that oil tank fuel is conveyed to single cylinder diesel fuel system with certain pressure and flow, guarantee single cylinder diesel fuel system Fuel oil stablizes supply, keeps single cylinder diesel performance stabilization, discharge low.
Single cylinder diesel oil transfer pump at this stage has the disadvantage in that
1. at high cost, pump oil low efficiency;
2. being easy to happen leakage;
3. the wear condition of transmission shaft and oil sealing cannot monitor in real time, to cannot replace in time.
Summary of the invention
Shortcoming present in view of the above technology, the object of the present invention is to provide a kind of single cylinder diesel oil transfer pump, Ensure to reduce part and process and structure complexity under the premise of reaching identical requirement, reduce processing, assembly cost, reduces leakage Liquid incidence improves pump oil and assembly efficiency.
In order to realize above-mentioned purpose according to the present invention and other advantages, a kind of single cylinder diesel oil transfer pump is provided, It is characterized in that, comprising:
The pump housing with certain inner space, the pump housing are communicatively equipped with axis hole and rotor slot;
Transmission shaft in the axis hole;And
Rotor assembly in the rotor slot,
Wherein, the rotor assembly is set on the transmission shaft, and the rotor assembly includes successively being set with from inside to outside In internal rotor and outer rotor on the transmission shaft, the internal rotor and the transmission shaft are selected by a dismountable trundle Connecting to property, the internal rotor is rotated with the rotation of the transmission shaft, and the outer rotor makees eccentric motion with the internal rotor, The bottom wall of the rotor slot is equipped with the crescent of at least a pair of of crescent.
Preferably, one end on the transmission shaft far from the rotor assembly is set with ball bearing.
Preferably, closely one end of the inside of the rotor assembly is set with composite bearing on the transmission shaft.
Preferably, combination two-lip seal is set on the transmission shaft, and the combination two-lip seal is located at the ball axis It holds between composite bearing.
Preferably, oil inlet and outlet is provided on the side wall of the rotor slot, the crescent is symmetrical and is spaced There are two ground is set, the oil inlet and oil outlet have been respectively communicated with the crescent, and the oil inlet and oil outlet Outlet is connected with the external world of the pump housing.
Preferably, the outside of the rotor assembly is equipped with the cover board for closing the rotor slot.
Preferably, the combination two-lip seal includes left sealing lip and right sealing lip, the left sealing lip and right sealing The oil leak slot of a loop is equipped between lip, the bottom wall of the oil leak slot is equipped at least one oil leaking hole.
Preferably, the extraneous oil leak for being connected and leading to the pump housing with the oil leak slot is additionally provided on the pump housing Peep hole.
Preferably, the pump housing is equipped with relief hole, is equipped in the relief hole and discharges the crescent for selectivity The pressure release valve module of interior oil pressure, the pressure release valve module include steel ball, returning spring, screw thread stick harness and copper sheathing valve seat.
Preferably, the outer surface of the outer rotor or internal rotor is coated with tungsten carbide coating.
Compared with prior art, the present invention the beneficial effect is that: ensure to reduce part under the premise of reaching identical requirement With process and structure complexity, processing, assembly cost are reduced, reduces leakage incidence, improves pump oil and assembly efficiency.
Detailed description of the invention
Fig. 1 is the three dimensional structure diagram according to the single cylinder diesel oil transfer pump of one embodiment of the invention;
Fig. 2 is the top view according to the single cylinder diesel oil transfer pump of one embodiment of the invention;
Fig. 3 is the axial sectional view according to the single cylinder diesel oil transfer pump of one embodiment of the invention;
Fig. 4 is according to the partial sectional view in the single cylinder diesel oil transfer pump of one embodiment of the invention at pressure release valve module;
Fig. 5 is the explosive view according to the single cylinder diesel oil transfer pump of one embodiment of the invention;
Fig. 6 is to be illustrated according to the three-dimensional structure for combining two-lip seal in the single cylinder diesel oil transfer pump of one embodiment of the invention Figure;
Fig. 7 is according to the front view for combining two-lip seal in the single cylinder diesel oil transfer pump of one embodiment of the invention;
Fig. 8 is the front view according to the single cylinder diesel oil transfer pump middle pump body of one embodiment of the invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, foregoing end other objects of the invention, feature, side Face and advantage will be apparent, and so that those skilled in the art can carry out according to the description.
Referring to Fig.1, Fig. 2, Fig. 3 and Fig. 5, single cylinder diesel oil transfer pump 100 include: the pump housing with certain inner space 110, driving section 120 and pressure release valve module 130, wherein the pump housing 110 is communicatively equipped with axis hole 111a and rotor slot 111b, transmission Portion 120 includes transmission shaft 121, ball bearing 122, combination two-lip seal 123, composite bearing 124 and rotor assembly, transmission shaft 121 In axis hole 111a, ball bearing 122 is set in one end far from the rotor assembly on transmission shaft 121, composite bearing 124 Closely one end of the inside of the rotor assembly is set on transmission shaft 121, and combination two-lip seal 123 is set in transmission shaft 121 On, and between ball bearing 122 and composite bearing 124, the rotor assembly is set in rotor slot 111b, the rotor assembly Including the internal rotor 125 and outer rotor 126 being successively set on transmission shaft 121 from inside to outside, internal rotor 125 and transmission shaft 121 It is selectively connected by a dismountable trundle 121a, internal rotor 125 rotates, outer rotor with the rotation of transmission shaft 121 126 make eccentric motion with internal rotor 125, and the crescent 111b ' of crescent is offered on the bottom wall of rotor slot 111b.Implement one In example, retaining ring 121b is also arranged on transmission shaft 121, the outside that retaining ring 121b is attached at ball bearing 122 prevents transmission shaft 121 Axial float, increase cover board 127 abrasion.
Referring to Fig. 4, Fig. 5 and Fig. 8, the side wall of rotor slot 111b is equipped with oil inlet 112 and oil outlet 113, crescent There are two 111b ' is symmetrical and compartment of terrain sets, oil inlet 112 and oil outlet 113 have been respectively communicated with a crescent 111b ', and into The outlet of hydraulic fluid port 112 and oil outlet 113 is connected with the external world of the pump housing 110.
Referring again to Fig. 5, the outside of the rotor assembly is equipped with the cover board 127 for enclosed rotor slot 111b.It is real one It applies in example, the edge of cover board 127 is equipped with 3 mounting hole 127b, can fix cover board 127 and the pump housing 110 by bolt 127c and connect It connects.
Referring to Fig. 6 and Fig. 7, combination two-lip seal 123 includes left sealing lip 123a and right sealing lip 123b, left sealing lip The oil leak slot 123c of a loop is equipped between 123a and right sealing lip 123b, the bottom wall of oil leak slot 123c is equipped at least one A oil leaking hole 123d, if the outer wall of the inner wall and transmission shaft 121 of combination two-lip seal 123 is worn, so as to cause oil liquid It leaks into the small space of the outer wall of the inner wall and transmission shaft 121 of combination two-lip seal 123, and can will be let out by oil leaking hole 123d The oil liquid leaked into the small space is discharged in oil leak slot 123c.In one embodiment, there are two oil leaking hole 123d is set.
Referring again to Fig. 4, the side opposite with cover board 127 is equipped with and the integrally formed installation of the pump housing 110 on the pump housing 110 Flange 111c is additionally provided on the pump housing 110 and is connected and leads to the extraneous oil leak peep hole of the pump housing with oil leak slot 123c (slightly Draw), if abrasion, which occurs, for the left sealing lip 123a or right sealing lip 123b of combination two-lip seal 123 leads to oily leakage, can pass through Oil leak slot 123c collects the oil of leakage, and is flowed out by the oil leak peep hole, to be observed by operator, to operate Personnel replace combination two-lip seal 123 in time prevents transmission shaft 121 and other associated components from wearing, while can be by described Oil leak peep hole and oil leaking hole 123d keep the pressure inside oil leak slot 123c to balance each other with external pressure, prevent pressure mistake Combination two-lip seal 123 is formed greatly and squeezes, damage left sealing lip 123a and right sealing lip 123b.
Referring to Fig. 4 and Fig. 5, the pump housing 110 is equipped with relief hole 111d, and relief hole 111d is respectively communicated with and 113 phase of oil outlet It is equipped in logical crescent 111b ' and the crescent 111b ' communicated with oil inlet 112, relief hole 111d and is released for selectivity Put the pressure release valve module 130 of the interior oil pressure of crescent 111b '.In one embodiment, pressure release valve module 130 includes steel ball 133, returning spring 132, screw thread stick harness 131 and copper sheathing valve seat 134, steel ball 133 are used for selective shut-off copper sheathing valve seat 134, steel Ball 133 and copper sheathing valve seat 134 form a switch, and copper sheathing valve seat 134 is fixed on the inside of relief hole 111d, so that copper sheathing valve The left side of seat 134 is connected to the crescent 111b ' (high pressure chest) that communicates with oil outlet 113, the right side connection of copper sheathing valve seat 134 and into The crescent 111b ' (low pressure chamber) that hydraulic fluid port 112 communicates, when oil outlet oil pressure is greater than the set value, oil pressure pushes the connection of steel ball 133 open So that the crescent 111b ' of 134 left and right sides of copper sheathing valve seat is connected, i.e., high pressure chest is connected with low pressure chamber, to drop The oil pressure of low high pressure chest plays pressure release valve action, and when near the critical value that oil outlet oil pressure is reduced to setting value, steel ball 133 Again by copper sheathing valve seat 134 under the action of returning spring 132, until again by copper sheathing when oil outlet oil pressure is greater than the set value Valve seat 134 is again turned on, and is looped back and forth like this, and is guaranteed that the pressure in crescent 111b ' is not higher than limit value, is prevented the oil pressure to be more than Needed for diesel engine, it is ensured that safe and reliable work.
O-ring seals 127a is additionally provided between cover board 127 and the pump housing 110 in one embodiment referring to Fig. 3 and Fig. 5.
In one embodiment, the outer surface of outer rotor 126 or internal rotor 125 is coated with tungsten carbide coating, can drop significantly Low-friction coefficient reduces noise, improves the service life of outer rotor 126 and internal rotor 125.
Working principle:
1. drive internal rotor 125 to rotate by the trundle 121a being equipped on transmission shaft 121 when transmission shaft 121 is rotated, Internal rotor 125 drives outer rotor 126 to rotate again, and internal rotor 125 and outer rotor 126 make eccentric motion, and in left and right, two chambers, which are formed, inhales Oil pocket and pumping cavity, oil sucting cavity sucks fuel oil from diesel oil tank, then fuel oil is extruded by pumping cavity, and transmission shaft 121 is in bavin The lower constantly rotation of oil machine balance shaft driving, internal rotor 125 and outer rotor 126 constantly export fuel oil;
2. right sealing lip 123b is used to prevent diesel oil in the pump chamber of the right from leaking from transmission shaft 121 in combination two-lip seal 123, Left sealing lip 123a is used to prevent left side pump chamber machine oil from leaking from transmission shaft 121, if the left sealing lip of combination two-lip seal 123 Abrasion, which occurs, for 123a or right sealing lip 123b leads to oily leakage, the oil of leakage can be collected by oil leak slot 123c, and by described The outflow of oil leak peep hole prevents from passing to be observed by operator so that operator replaces combination two-lip seal 123 in time Moving axis 121 and other associated components are worn, while can keep oil leak by the oil leak peep hole and oil leaking hole 123d Pressure inside slot 123c balances each other with external pressure, prevents pressure excessive and forms extruding, damage to combination two-lip seal 123 Bad left sealing lip 123a and right sealing lip 123b;
3. steel ball 133 and copper sheathing valve seat 134 form a switch, copper sheathing valve seat 134 is fixed on the interior of relief hole 111d Portion, so that the left side of copper sheathing valve seat 134 is connected to the crescent 111b ' (high pressure chest) communicated with oil outlet 113, copper sheathing valve seat 134 Right side connection oil inlet 112 crescent 111b ' (low pressure chamber), when oil outlet oil pressure is greater than the set value, oil pressure pushes steel open The connection of ball 133 is so that the crescent 111b ' of 134 left and right sides of copper sheathing valve seat is connected, i.e., high pressure chest is connected with low pressure chamber It is logical, to reduce the oil pressure of high pressure chest, pressure release valve action is played, and when oil outlet oil pressure is reduced near the critical value of setting value When, steel ball 133 under the action of returning spring 132 again by copper sheathing valve seat 134, until oil outlet oil pressure is greater than the set value When again copper sheathing valve seat 134 is again turned on, loop back and forth like this, guarantee crescent 111b ' in pressure be not higher than limit value, prevent Only oil pressure is more than needed for diesel engine, it is ensured that safe and reliable work.
Number of devices and treatment scale described herein are for simplifying explanation of the invention.To application of the invention, Modifications and variations will be readily apparent to persons skilled in the art.
According to the present invention, as described above, it is possible to obtain it is following the utility model has the advantages that
1, ensure to reduce part and process and structure complexity under the premise of reaching identical requirement, reduce processing, assembly Cost reduces leakage incidence, improves pump oil and assembly efficiency;
2,123 seal failure of two-lip seal of discovery combination in time prevents to replace to combination two-lip seal 123 The damage of the diesel engine as caused by single cylinder diesel lubrication failure;
3, the pressure discharged in crescent guarantees the peace of oil circuit so that the output pressure of oil transfer pump is not above limit value It is complete and ensure diesel engine steady operation.
Although the embodiments of the present invention have been disclosed as above, but it is not limited in listed fortune in specification and embodiments With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily real Now other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is not limited to Specific details and legend shown and described herein.

Claims (8)

1. a kind of single cylinder diesel oil transfer pump characterized by comprising
The pump housing with certain inner space, the pump housing are communicatively equipped with axis hole and rotor slot;
Transmission shaft in the axis hole;And
Rotor assembly in the rotor slot,
Wherein, the rotor assembly is set on the transmission shaft, and the rotor assembly includes successively being set in institute from inside to outside The internal rotor and outer rotor on transmission shaft are stated, the internal rotor and the transmission shaft pass through a dismountable trundle selectively Connection, the internal rotor are rotated with the rotation of the transmission shaft, and the outer rotor makees eccentric motion with the internal rotor, described Symmetrical and compartment of terrain sets the crescent there are two crescent on the bottom wall of rotor slot, is provided with oil inlet on the side wall of the rotor slot Mouthful and oil outlet, the oil inlet and oil outlet be respectively communicated with the crescent, and the oil inlet and oil outlet Outlet is connected with the external world of the pump housing, and the pump housing is equipped with relief hole, is equipped in the relief hole and releases for selectivity The pressure release valve module of oil pressure in the crescent is put, the pressure release valve module includes steel ball, returning spring, screw thread stick harness and copper Cover valve seat.
2. single cylinder diesel oil transfer pump as described in claim 1, which is characterized in that far from the rotor set on the transmission shaft One end of part is set with ball bearing.
3. single cylinder diesel oil transfer pump as claimed in claim 2, which is characterized in that the closely rotor set on the transmission shaft One end of the inside of part is set with composite bearing.
4. single cylinder diesel oil transfer pump as claimed in claim 3, which is characterized in that be set with combination lips on the transmission shaft Oil sealing, and the combination two-lip seal is between the ball bearing and composite bearing.
5. single cylinder diesel oil transfer pump as described in claim 1, which is characterized in that the outside of the rotor assembly is equipped with and is used for Close the cover board of the rotor slot.
6. single cylinder diesel oil transfer pump as claimed in claim 4, which is characterized in that the combination two-lip seal includes left sealing Lip and right sealing lip are equipped with the oil leak slot of a loop, the bottom wall of the oil leak slot between the left sealing lip and right sealing lip It is equipped at least one oil leaking hole.
7. single cylinder diesel oil transfer pump as claimed in claim 6, which is characterized in that be additionally provided on the pump housing and the oil leak Slot is connected and leads to the extraneous oil leak peep hole of the pump housing.
8. single cylinder diesel oil transfer pump as described in claim 1, which is characterized in that the outer surface of the outer rotor or internal rotor It is coated with tungsten carbide coating.
CN201610602968.0A 2016-07-28 2016-07-28 Single cylinder diesel oil transfer pump Active CN106014966B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610602968.0A CN106014966B (en) 2016-07-28 2016-07-28 Single cylinder diesel oil transfer pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610602968.0A CN106014966B (en) 2016-07-28 2016-07-28 Single cylinder diesel oil transfer pump

Publications (2)

Publication Number Publication Date
CN106014966A CN106014966A (en) 2016-10-12
CN106014966B true CN106014966B (en) 2019-04-09

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Application Number Title Priority Date Filing Date
CN201610602968.0A Active CN106014966B (en) 2016-07-28 2016-07-28 Single cylinder diesel oil transfer pump

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110778493A (en) * 2019-11-28 2020-02-11 江苏金湖输油泵有限公司 A fuel pump device used for fuel and oil conjoined synchronization

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2859005Y (en) * 2005-12-09 2007-01-17 王何新 Engine oil pump
CN201057143Y (en) * 2007-06-18 2008-05-07 昆明理工大学 Engine oil pump for single and dual-cylinder horizontal diesel engine
CN201372923Y (en) * 2009-04-03 2009-12-30 王新宽 Single-cylinder diesel engine oil pump with pressure relief device
CN102678541A (en) * 2012-05-25 2012-09-19 山东鑫亚工业股份有限公司 Fuel delivery pump with floated cycloid rotor
CN204402869U (en) * 2014-12-01 2015-06-17 长春一东离合器股份有限公司 For the cooling oil pump of wet clutch
CN205937094U (en) * 2016-07-28 2017-02-08 江苏金湖输油泵有限公司 Single cylinder diesel petroleum pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010090843A (en) * 2008-10-09 2010-04-22 Mikuni Corp Pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2859005Y (en) * 2005-12-09 2007-01-17 王何新 Engine oil pump
CN201057143Y (en) * 2007-06-18 2008-05-07 昆明理工大学 Engine oil pump for single and dual-cylinder horizontal diesel engine
CN201372923Y (en) * 2009-04-03 2009-12-30 王新宽 Single-cylinder diesel engine oil pump with pressure relief device
CN102678541A (en) * 2012-05-25 2012-09-19 山东鑫亚工业股份有限公司 Fuel delivery pump with floated cycloid rotor
CN204402869U (en) * 2014-12-01 2015-06-17 长春一东离合器股份有限公司 For the cooling oil pump of wet clutch
CN205937094U (en) * 2016-07-28 2017-02-08 江苏金湖输油泵有限公司 Single cylinder diesel petroleum pump

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