EP1312782A3 - Injection pump with cold start acceleration for direct injection internal combustion engines - Google Patents

Injection pump with cold start acceleration for direct injection internal combustion engines Download PDF

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Publication number
EP1312782A3
EP1312782A3 EP02022593A EP02022593A EP1312782A3 EP 1312782 A3 EP1312782 A3 EP 1312782A3 EP 02022593 A EP02022593 A EP 02022593A EP 02022593 A EP02022593 A EP 02022593A EP 1312782 A3 EP1312782 A3 EP 1312782A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
cold start
combustion engines
start acceleration
adjusting unit
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
EP02022593A
Other languages
German (de)
French (fr)
Other versions
EP1312782B1 (en
EP1312782A2 (en
Inventor
Helmut Simon
Helmut Haberer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1312782A2 publication Critical patent/EP1312782A2/en
Publication of EP1312782A3 publication Critical patent/EP1312782A3/en
Application granted granted Critical
Publication of EP1312782B1 publication Critical patent/EP1312782B1/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
    • 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
    • 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
    • F02D2001/186—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic using a pressure-actuated piston for adjustment of a stationary cam or roller support

Abstract

Die Erfindung bezieht sich auf ein Kraftstoffförderaggregat für Verbrennungskraftmaschinen mit einem Gehäuse (1), welches eine Verstelleinheit (2) zum Verschieben des Einspritzzeitpunktes von Kraftstoff in die Brennräume der Verbrennungskraftmaschine umfasst. In der Verstelleinheit (2) ist ein Spritzverstellerkolben (17) aufgenommen, der in der Verstelleinheit (2) verschiebbar ist. Der Einspritzverstellerkolben (17) umschließt einen zu diesem relativ bewegbaren Nachlaufkolben/Regelschieber (24). Die Verstelleinheit (2) enthält einen über einen Steller (3) druckbeaufschlagbaren/druckentlastbaren Druckraum (11), über welchen ein Kaltstartbeschleunigungskolben (12) bewegbar ist, der über ein Federelement (21) den Nachlaufkolben/Regelschieber (24) beaufschlagt und andererseits mit einer Feder/Hülse-Kombination (19, 19.1, 19.2) auf den Einspritzverstellerkolben (17) einwirkt.

Figure 00000001
The invention relates to a fuel delivery unit for internal combustion engines with a housing (1), which comprises an adjusting unit (2) for shifting the injection timing of fuel into the combustion chambers of the internal combustion engine. In the adjusting unit (2) a Spritzverstellerkolben (17) is added, which is displaceable in the adjustment unit (2). The Einspritzverstellerkolben (17) encloses a relatively movable follower piston / control slide (24). The adjusting unit (2) contains a pressure chamber (11) which can be pressurized / relieved of pressure via a regulator (3), via which a cold start acceleration piston (12) can be moved, which acts on the follower piston / control slide (24) via a spring element (21) and on the other hand with a Spring / sleeve combination (19, 19.1, 19.2) acting on the Einspritzverstellerkolben (17).
Figure 00000001
EP02022593A 2001-11-16 2002-10-09 Injection pump with cold start acceleration for direct injection internal combustion engines Expired - Lifetime EP1312782B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10156338 2001-11-16
DE10156338A DE10156338B4 (en) 2001-11-16 2001-11-16 Injection pump with cold start acceleration for direct injection internal combustion engines

Publications (3)

Publication Number Publication Date
EP1312782A2 EP1312782A2 (en) 2003-05-21
EP1312782A3 true EP1312782A3 (en) 2005-05-18
EP1312782B1 EP1312782B1 (en) 2008-08-06

Family

ID=7705997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02022593A Expired - Lifetime EP1312782B1 (en) 2001-11-16 2002-10-09 Injection pump with cold start acceleration for direct injection internal combustion engines

Country Status (3)

Country Link
US (1) US6792922B2 (en)
EP (1) EP1312782B1 (en)
DE (2) DE10156338B4 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7350508B1 (en) * 2006-10-12 2008-04-01 Delphi Technologies, Inc. Advance arrangements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037574A (en) * 1976-05-21 1977-07-26 Stanadyne, Inc. Timing control for fuel injection pump
US4610234A (en) * 1984-06-12 1986-09-09 Diesel Kiki Co., Ltd. Injection timing control device for distributor-type fuel injection pumps
US4798189A (en) * 1986-09-09 1989-01-17 Lucas Industries Public Limited Company Fuel injection pump
US5647327A (en) * 1995-04-07 1997-07-15 Nippon Soken, Inc. Injection timing control device for fuel injection pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897764A (en) * 1973-05-18 1975-08-05 Cav Ltd Liquid fuel injection pumping apparatus
DE2716307A1 (en) * 1977-04-13 1978-10-19 Volkswagenwerk Ag FUEL INJECTION PUMP FOR A SELF-IGNITING COMBUSTION ENGINE
JPS5786533A (en) * 1980-11-15 1982-05-29 Diesel Kiki Co Ltd Regulating device of injection timing in distributor type fuel injection pump
JPS60259732A (en) * 1984-05-09 1985-12-21 Diesel Kiki Co Ltd Injection timing control unit for fuel distribution type injection pump
GB9226669D0 (en) * 1992-12-22 1993-02-17 Lucas Ind Plc Fuel pump
DE19849925A1 (en) * 1998-10-29 2000-05-04 Bosch Gmbh Robert Fuel injection pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037574A (en) * 1976-05-21 1977-07-26 Stanadyne, Inc. Timing control for fuel injection pump
US4610234A (en) * 1984-06-12 1986-09-09 Diesel Kiki Co., Ltd. Injection timing control device for distributor-type fuel injection pumps
US4798189A (en) * 1986-09-09 1989-01-17 Lucas Industries Public Limited Company Fuel injection pump
US5647327A (en) * 1995-04-07 1997-07-15 Nippon Soken, Inc. Injection timing control device for fuel injection pump

Also Published As

Publication number Publication date
EP1312782B1 (en) 2008-08-06
DE10156338A1 (en) 2003-06-05
US6792922B2 (en) 2004-09-21
US20030116139A1 (en) 2003-06-26
EP1312782A2 (en) 2003-05-21
DE50212595D1 (en) 2008-09-18
DE10156338B4 (en) 2005-05-04

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