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
  • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
  • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
• • 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
  • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
  • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
• • 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
  • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
  • F02M55/004—Joints; Sealings
  • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
• • 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
  • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
  • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
• • 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
  • F02M59/025—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 a single 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
  • F02M59/02—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
  • F02M59/102—Mechanical drive, e.g. tappets or cams
• • 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
  • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
  • F02M2200/85—Mounting of fuel injection apparatus
• • 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
  • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
  • F02M2200/85—Mounting of fuel injection apparatus
  • F02M2200/857—Mounting of fuel injection apparatus characterised by mounting fuel or common rail to engine
• • 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
  • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
  • F02M2700/05—Miscellaneous constructional elements; Leakage detection
  • F02M2700/055—Fuel distribution among injection nozzles
• • 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
  • F02M59/48—Assembling; Disassembling; Replacing

Definitions

• the fuel is delivered by means of a high pressure pump from a fuel tank to a fuel rail which serves as a storage reservoir for the fuel.
• the fuel is under high pressure in the fuel rail (or common rail) and can be injected directly into the cylinders via injection valves connected to the rail.
• a high pressure pump for the delivery of a fluid comprises a pump body.
• the high pressure pump further comprises a piston.
• the piston is axially movable within the pump body and comprises a first part and a second part.
• the first part is arranged within the pump body and the second part is arranged outside the pump body.
• the pump body is couplable with a combustion engine such that the second part of the piston extends into the combustion engine.
• the pump body is provided with as many fluid outputs as the combustion engine comprises cylinders.
• the pump is designed for coupling each fluid output directly with one cylinder of the combustion engine via a pipe.
• the pump body is couplable with the combustion engine, particularly with an engine block or with a cylinder head of the combustion engine, and when the pump body is coupled with the combustion engine the second part of the piston is arranged such that it is axially movable in an opening of the engine block of the combustion engine.
• the high pressure pump is a plug-in pump. The high pressure pump is couplable directly in the engine block and mountable with the engine block.
• the piston is coupled with a roller tappet.
• the roller tappet is couplable with the cam or crank or balancer shaft of the combustion engine.
• the cam or crank or balancer shaft is arranged to move the roller tappet and the piston.
• the roller tappet is in direct contact with the opening of the engine block.
• the roller tappet slides over the walls of the opening. In the opening in the engine block ensures the axial movement of the roller tappet. Since the pump body is provided mainly for the guiding of the fluid and not for the guiding of the piston, the high pressure pump is provided with less weight and is very compact. Further, the pump is cost-effective. With the high pressure pump a direct coupling of the pump with injectors for injecting fluid into the combustion chambers is possible.
• a system for the delivery of a fluid comprises a high pressure pump for the delivery of a fluid.
• Each fluid outlet of the pump is connected to a pipe and each pipe is directly couplable with an injector for injecting fluid into the combustion chamber of the combustion engine .
• the pump is coupled upstream with an electrically driven pump.
• the electrically driven pump is an in-tank pump that is arranged inside a fluid tank.
• the system comprises no further internal transfer pump.
• the system is a low-cost and low-weight compact pump system. There is no need for a common rail between the high pressure pump and the injectors.
• the injectors are fed directly by the pump.
• the pump is designed such that each injector comprises its own fluid delivery path from the pump to the injector. Outside the pump the injectors are hydraulically independent from each other.
• Figure 1 schematically shows high pressure pump according to an embodiment
• Figures 2A and 2B schematically show high pressure pump according to an embodiment
• Figure 3 schematically shows high pressure pump according to an embodiment
• Figure 4 schematically shows a system for the delivery of a fluid according to an embodiment .
• Figure 1 schematically shows a high pressure pump 100 according to an embodiment.
• the high pressure pump 100 comprises a pump body 101 that surrounds openings for the guiding of fluid.
• the pump body 101 comprises a fluid inlet 112.
• the fluid inlet is couplable with an electric pump.
• the electric pump feeds the fluid to the inlet 112 of the pump body 101.
• a piston 102 is axially movable relative to the pump body 101 in a piston chamber 111. Due to the movement of the piston 102 relative to the pump body 101 fluid is sucked in through the inlet 112 into the pump body 101 and ejected through fluid outlets 105.
• the piston comprises a first part 103 that is arranged within the pump body 101.
• the first part 103 is at least partly in contact with the fluid during operation of the pump 100.
• the piston 102 comprises a second part 104 that is arranged outside the pump body 101.
• the second part 104 is coupled with a roller tappet 117.
• the roller tappet 117 is coupled to a drive shaft 127 of a combustion engine.
• the drive shaft 127 may be a cam or a crank or a balancer shaft for the movement of the roller tappet 117 and the piston 102 axially relative to the pump body 101.
• the pump body 101 is coupled to an engine block 129 of the combustion engine.
• the engine block 129 surrounds an opening 128.
• the roller tappet 117 and the second part 104 of the piston 102 are arranged in the opening 128.
• the roller tappet 117 is in direct contact with the engine block 129.
• the roller tappet 117 and the drive shaft 127 are lubricated with engine oil.
• a pressure sensor 116 is arranged at the pump body 101 and hydraulically connected to the piston chamber 111 for determining the value of the fluid pressure at the fluid outlet 105.
• the pump 100 comprises as many fluid outlets as the combustion engine comprises cylinders.
• the pump 100 comprises one outlet 105.
• the pump 100 comprises two fluid outlets 105 and 106.
• the pump 100 comprises three fluid outlets 105, 106, 107.
• the pump comprises more than three fluid outlets, for example four or more fluid outlets.
• Each fluid outlet 105, 106, 107 is connected to a pipe as exemplarily shown for three outputs in Figure 4.
• Each pipe 108, 109, 110 is coupled with an injector 113, 114, 115.
• the pump 100 delivers fluid to the injectors 113, 114, 115.
• the injectors are arranged to inject the fluid into combustion chambers of the combustion engine.
• the combustion engine comprises three combustion chambers.
• One injector of the injectors 113, 114, 115 is arranged in one combustion chamber respectively. There is no common rail between the pump 100 and the injectors 113, 114 and 115.
• the injectors 113, 114, 115 each are directly coupled with the pump 100 via the pipes 108, 109, 110.
• the pump 100 comprises a volume control valve for controlling the volume of fluid delivered to the combustion engine.
• the pump 100 is installed directly in the engine block 129.
• the roller tappet 117 slides over the walls of the engine block 129 in the opening 128.
• the opening 128 ensures the axial movement of the roller tappet 117.
• An internal transfer pump may be replaced by the electric in-tank pump that is hydraulically coupled to the inlet 112 of the pump body 101.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Fuel-Injection Apparatus (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47429820

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (3)

• 2012
  • 2012-12-18 KR KR1020147021484A patent/KR20140101882A/ko not_active Application Discontinuation
  • 2012-12-18 WO PCT/EP2012/075913 patent/WO2013098119A1/en active Application Filing
  • 2012-12-18 EP EP12806040.7A patent/EP2769078A1/de not_active Ceased

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events