EP3176422A3 - Fuel pump - Google Patents

Fuel pump Download PDF

Info

Publication number
EP3176422A3
EP3176422A3 EP16201691.9A EP16201691A EP3176422A3 EP 3176422 A3 EP3176422 A3 EP 3176422A3 EP 16201691 A EP16201691 A EP 16201691A EP 3176422 A3 EP3176422 A3 EP 3176422A3
Authority
EP
European Patent Office
Prior art keywords
piston
follower assembly
bore
dead center
end cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16201691.9A
Other languages
German (de)
French (fr)
Other versions
EP3176422B1 (en
EP3176422A2 (en
Inventor
Levent AKIN
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.)
Delphi Technologies IP Ltd
Original Assignee
Delphi International Operations Luxembourg SARL
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 Delphi International Operations Luxembourg SARL filed Critical Delphi International Operations Luxembourg SARL
Publication of EP3176422A2 publication Critical patent/EP3176422A2/en
Publication of EP3176422A3 publication Critical patent/EP3176422A3/en
Application granted granted Critical
Publication of EP3176422B1 publication Critical patent/EP3176422B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • F02M59/464—Inlet valves of the check valve type
    • 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
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations
    • 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
    • F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs

Landscapes

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

Abstract

The present disclosure relates to a fuel pump (10) having a head member (12) provided with a blind bore (14) in which a piston (26) is adapted to perform a pumping cycle by reciprocating along the main axis (X1) of the bore (14) between a top dead center (TDC) position and a bottom dead center (BDC) position. Fuel is pressurized during the cycle in a compression chamber (30) defined between the top extremity (28) of the piston and the blind end of the bore (14). The piston (26) reciprocates under the influence of a rotating cam (36) cooperating with a follower assembly (34) combined to the piston (26). The pump (10) also includes a spring (46) compressed between the head member (12) and the follower assembly (34) in order to bias the follower assembly (34) toward the cam (36). An end cap (48) is mounted to the piston (26) for engaging the follower assembly (34). The end cap (48) may locate a spring seat member (44) or may form a spring seat member (44).
EP16201691.9A 2015-12-01 2016-12-01 Fuel pump Active EP3176422B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1521130.3A GB201521130D0 (en) 2015-12-01 2015-12-01 Fuel pump

Publications (3)

Publication Number Publication Date
EP3176422A2 EP3176422A2 (en) 2017-06-07
EP3176422A3 true EP3176422A3 (en) 2017-06-21
EP3176422B1 EP3176422B1 (en) 2020-03-11

Family

ID=55177473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16201691.9A Active EP3176422B1 (en) 2015-12-01 2016-12-01 Fuel pump

Country Status (2)

Country Link
EP (1) EP3176422B1 (en)
GB (1) GB201521130D0 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040177752A1 (en) * 2001-09-28 2004-09-16 Wolfgang Buchhauser Connecting element for connecting a piston to a restoring element
EP2412976A2 (en) * 2010-07-28 2012-02-01 Delphi Technologies Holding S.à.r.l. Intermediate drive assembly
DE102012202205A1 (en) * 2012-02-14 2013-08-14 Robert Bosch Gmbh High-pressure fuel pump for fuel injection system of engine, has return spring that is supported against spring plate of plunger assembly, and bearing element which is arranged between spring plate and piston base of pump piston
DE102012203230A1 (en) * 2012-03-01 2013-09-05 Robert Bosch Gmbh Pump element for high-pressure fuel pump in fuel injection system, has force transmission element that rests against face surface of plunger body or supporting element in which recess is formed within diameter of body or supporting element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040177752A1 (en) * 2001-09-28 2004-09-16 Wolfgang Buchhauser Connecting element for connecting a piston to a restoring element
EP2412976A2 (en) * 2010-07-28 2012-02-01 Delphi Technologies Holding S.à.r.l. Intermediate drive assembly
DE102012202205A1 (en) * 2012-02-14 2013-08-14 Robert Bosch Gmbh High-pressure fuel pump for fuel injection system of engine, has return spring that is supported against spring plate of plunger assembly, and bearing element which is arranged between spring plate and piston base of pump piston
DE102012203230A1 (en) * 2012-03-01 2013-09-05 Robert Bosch Gmbh Pump element for high-pressure fuel pump in fuel injection system, has force transmission element that rests against face surface of plunger body or supporting element in which recess is formed within diameter of body or supporting element

Also Published As

Publication number Publication date
GB201521130D0 (en) 2016-01-13
EP3176422B1 (en) 2020-03-11
EP3176422A2 (en) 2017-06-07

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