DE3763811D1 - PUMP ELEMENT OF A FUEL INJECTION PUMP FOR INJECTION COMBUSTION ENGINES. - Google Patents

PUMP ELEMENT OF A FUEL INJECTION PUMP FOR INJECTION COMBUSTION ENGINES.

Info

Publication number
DE3763811D1
DE3763811D1 DE8787890264T DE3763811T DE3763811D1 DE 3763811 D1 DE3763811 D1 DE 3763811D1 DE 8787890264 T DE8787890264 T DE 8787890264T DE 3763811 T DE3763811 T DE 3763811T DE 3763811 D1 DE3763811 D1 DE 3763811D1
Authority
DE
Germany
Prior art keywords
pump
piston
pump piston
radial bores
control edge
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.)
Expired - Lifetime
Application number
DE8787890264T
Other languages
German (de)
Inventor
Theodor Dipl Ing Dr Stipek
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 AG
Robert Bosch GmbH
Original Assignee
Robert Bosch AG
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 AG, Robert Bosch GmbH filed Critical Robert Bosch AG
Application granted granted Critical
Publication of DE3763811D1 publication Critical patent/DE3763811D1/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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/001—Pumps with means for preventing erosion on fuel discharge
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
    • F02M59/265—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders characterised by the arrangement or form of spill port of spill contour on the piston

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

1. A pump element of a fuel injection pump for fuel-injected internal combustion engines, in which the pump piston bushing (2) has at least one suction and overflow bore (3) over which control edges (4, 5) of the pump piston (1) slide, at least one control edge (4) disposed in the region of the piston end face determining the start of flow and at least one, in particular oblique control edge (5) disposed on the piston casing determining the end of flow, and, during at least part of the compression stroke of the pump piston (1), a throttled line connexion being present between the operating chamber (11) of the pump piston (1) and the suction and overflow bore (3), the throttled line connexion being formed by a plurality of radial bores (7) which are arranged parallel to the control edge (4) determining the start of flow and which are connected to the operating chamber (11) of the pump piston (1), characterized in that a plurality of radial bores (7) open directly onto the casing surface of the pump piston in an area thereof which slides over the suction and overflow bore (3), the openings (8) of the radial bores (7) are at equal distances from the control edge (4), and the radial bores (7) open into only those areas of the piston casing which correspond to a rotational position of the pump piston (1) for large injection quantities.
DE8787890264T 1986-11-21 1987-11-20 PUMP ELEMENT OF A FUEL INJECTION PUMP FOR INJECTION COMBUSTION ENGINES. Expired - Lifetime DE3763811D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT311986 1986-11-21

Publications (1)

Publication Number Publication Date
DE3763811D1 true DE3763811D1 (en) 1990-08-23

Family

ID=3545597

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787890264T Expired - Lifetime DE3763811D1 (en) 1986-11-21 1987-11-20 PUMP ELEMENT OF A FUEL INJECTION PUMP FOR INJECTION COMBUSTION ENGINES.

Country Status (3)

Country Link
EP (1) EP0270519B1 (en)
AT (1) ATE54723T1 (en)
DE (1) DE3763811D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4006409A1 (en) * 1990-03-01 1991-09-19 Bosch Gmbh Robert FUEL INJECTION DEVICE FOR INJECTION COMBUSTION ENGINES
DE4006899A1 (en) * 1990-03-06 1991-09-12 Mak Maschinenbau Krupp Piston for fuel injection pump - has increased radial clearance over end region to eliminate cavitation
DE19831078A1 (en) * 1998-07-10 2000-01-13 Orange Gmbh Fuel injection pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR788642A (en) * 1935-04-11 1935-10-14 Fuel injection pumps
FR887767A (en) * 1940-06-10 1943-11-23 Saurer Ag Adolph Injection pump with no-load running adjustment
US2513883A (en) * 1947-01-15 1950-07-04 Ingersoll Rand Co Fuel pump for engines
DE1954123A1 (en) * 1968-11-04 1970-05-27 Nippon Denso Co Fuel injection pump for diesel engines
DE2932503A1 (en) * 1979-08-10 1981-02-26 Daimler Benz Ag Diesel engine fuel injection pump - has outlet throttled during part of stroke but throttle closed during cold-start by rotation of piston
DE3347430A1 (en) * 1983-12-29 1985-07-11 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES

Also Published As

Publication number Publication date
EP0270519A1 (en) 1988-06-08
ATE54723T1 (en) 1990-08-15
EP0270519B1 (en) 1990-07-18

Similar Documents

Publication Publication Date Title
ES247199U (en) Inlet ports in I.C. engines
ES2064914T3 (en) AN INTERNAL COMBUSTION ENGINE.
DE58903432D1 (en) INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
DE3778629D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
DE3763811D1 (en) PUMP ELEMENT OF A FUEL INJECTION PUMP FOR INJECTION COMBUSTION ENGINES.
DE3768490D1 (en) FUEL INJECTION DEVICE FOR A DIESEL INTERNAL COMBUSTION ENGINE WITH PRE-INJECTION.
DE3772363D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
US4448167A (en) Fuel injection pump for internal combustion engines
IT8221436A0 (en) IMPROVEMENT IN THE CONTROL OF PISTONS IN INJECTION PUMPS FOR INTERNAL COMBUSTION ENGINES.
ES511459A0 (en) "INJECTION PUMP FOR INTERNAL COMBUSTION ENGINE".
DE59003366D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
DE59002553D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
DE59007406D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
NL189680C (en) PUMP INJECTION NOZZLE FUEL ASSEMBLY FOR INTERNAL COMBUSTION ENGINES.
FR2592919A1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
GB2028421A (en) Fuelinjection pump for internal-combustion engines
DE58905107D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES, IN PARTICULAR DIESEL INTERNAL COMBUSTION ENGINES.
DE59006723D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
DK155100B (en) COMBINED FUEL PUMP AND INJECTOR FOR COMBUSTION ENGINES
DE58901432D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
ATE240456T1 (en) FUEL INJECTION PUMP FOR AN INTERNAL COMBUSTION ENGINE
DE59000360D1 (en) Internal combustion engine with reciprocating pistons.
DE3773397D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
DE59001368D1 (en) FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES.
SU1578378A2 (en) Plunger pair of distribution fuel pump

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee