EP1167723A3 - Injection timing advance arrangement - Google Patents

Injection timing advance arrangement Download PDF

Info

Publication number
EP1167723A3
EP1167723A3 EP01304818A EP01304818A EP1167723A3 EP 1167723 A3 EP1167723 A3 EP 1167723A3 EP 01304818 A EP01304818 A EP 01304818A EP 01304818 A EP01304818 A EP 01304818A EP 1167723 A3 EP1167723 A3 EP 1167723A3
Authority
EP
European Patent Office
Prior art keywords
piston
advance
servo
light load
arrangement
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
EP01304818A
Other languages
German (de)
French (fr)
Other versions
EP1167723B1 (en
EP1167723A2 (en
Inventor
Christopher Wood
Daniel Jeremy Hopley
William Robert Burborough
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 Inc
Original Assignee
Delphi Technologies Inc
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 Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1167723A2 publication Critical patent/EP1167723A2/en
Publication of EP1167723A3 publication Critical patent/EP1167723A3/en
Application granted granted Critical
Publication of EP1167723B1 publication Critical patent/EP1167723B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F02M41/14—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 rotary distributor supporting pump pistons
    • F02M41/1405—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 rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis
    • F02M41/1411—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 rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis characterised by means for varying fuel delivery or injection timing
    • F02M41/1416—Devices specially adapted for angular adjustment of annular cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F02D1/18—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse
    • F02D1/183—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic

Abstract

An advance arrangement comprises an advance piston (12) which is slidable within a first bore (14), the advance piston (12) cooperating, in use, with a cam arrangement of a fuel pump to adjust the timing of fuel delivery by the pump. A servo-piston (24) is slidable within a further bore (22) provided in the advance piston (12), a light load piston (26) being moveable relative to the advance piston (12) against the action of a light load control spring (28). A servo-control spring (34) is engaged between the light load piston (26) and the servo-piston (24) and a seal arrangement (30, 32) comprising at least one separate seal member, is arranged to form a substantially fluid tight seal between the servo-piston (24) and the light load piston (26). The servo-piston (24) may include a removable region (40), whereby removal of the region (40) permits the advance characteristics of the advance arrangement for light load conditions to be varied.
EP20010304818 2000-06-22 2001-05-31 Injection timing advance arrangement Expired - Lifetime EP1167723B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0015191 2000-06-22
GB0015191A GB0015191D0 (en) 2000-06-22 2000-06-22 Advance arrangement

Publications (3)

Publication Number Publication Date
EP1167723A2 EP1167723A2 (en) 2002-01-02
EP1167723A3 true EP1167723A3 (en) 2002-06-19
EP1167723B1 EP1167723B1 (en) 2003-11-19

Family

ID=9894102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010304818 Expired - Lifetime EP1167723B1 (en) 2000-06-22 2001-05-31 Injection timing advance arrangement

Country Status (3)

Country Link
EP (1) EP1167723B1 (en)
DE (1) DE60101244T2 (en)
GB (1) GB0015191D0 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752086A1 (en) * 1977-11-22 1979-05-23 Stanadyne Inc Timing control for fuel pump - using angularly adjustable cam ring controlled by hydraulically actuated piston with pressure correlated with engine speed
US4748958A (en) * 1986-11-12 1988-06-07 Ash Eugene G Method and means for repairing injection fuel pump pistons
EP0921300A2 (en) * 1997-12-02 1999-06-09 LUCAS INDUSTRIES public limited company Advance arrangement for a fuel pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752086A1 (en) * 1977-11-22 1979-05-23 Stanadyne Inc Timing control for fuel pump - using angularly adjustable cam ring controlled by hydraulically actuated piston with pressure correlated with engine speed
US4748958A (en) * 1986-11-12 1988-06-07 Ash Eugene G Method and means for repairing injection fuel pump pistons
EP0921300A2 (en) * 1997-12-02 1999-06-09 LUCAS INDUSTRIES public limited company Advance arrangement for a fuel pump

Also Published As

Publication number Publication date
DE60101244D1 (en) 2003-12-24
DE60101244T2 (en) 2004-09-09
GB0015191D0 (en) 2000-08-09
EP1167723B1 (en) 2003-11-19
EP1167723A2 (en) 2002-01-02

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