US3683879A - Fuel injection pumps - Google Patents

Fuel injection pumps Download PDF

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Publication number
US3683879A
US3683879A US76510A US3683879DA US3683879A US 3683879 A US3683879 A US 3683879A US 76510 A US76510 A US 76510A US 3683879D A US3683879D A US 3683879DA US 3683879 A US3683879 A US 3683879A
Authority
US
United States
Prior art keywords
pump
drive element
fuel injection
shaft
extending
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
US76510A
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English (en)
Inventor
Colin Thomas Timms
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3683879A publication Critical patent/US3683879A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02D1/162—Adjustment of injection timing by mechanical means dependent on engine speed for angular adjustment of driving and driven shafts

Definitions

  • a fuel injection pump which includes a rotary drive shaft and which is driven through a device which enables the timing of injection of fuel to an associated engine to be varied in accordance with the speed at which the pump is driven, the device including a cover which has a cylindrical extension projecting into the body portion of the pump and there being provided intermediate the pump and the extension an oil seal.
  • drive element and speed responsive mean for adjusting the angular relationship between the drive element and the shaft in accordance with the speed at which the pump is driven.
  • the aforesaid device has included a cover secured and sealingly engaged with a hub, the cover extending to adjacent a cylindrical surface defined on a member formed on or secured to the input member, with there being provided a seal between said surface and the cover, the seal allowing limited angular movement between the cover and with said surface but providing a liquid seal therebetween to prevent lubricant from within the device escaping.
  • Such devices have not proved satisfactory and it has been found that the lubricant has escaped thereby leading to failure of the device. 7
  • a pump of the kind specified includes a cover for said device, the cover being secured to and sealingly engaged with said drive element and defining a hollow cylindrical portion which extends about said shaft and within the body portion of the pump, and seal means being provided between the body portion of the pump and the outer peripheral surface of said cylindrical portion of the cover.
  • FIG. 1 is a sectional side elevation through part of a pump
  • FIG. 2 is a view taken along the line 2-2 of FIG. 1, the view looking in the direction of the arrows.
  • a portion of the pump body is shown at 10 and through which extends a driven shaft 11.
  • the pump body accommodates a reciprocable plunger or plungers and these are actuated in known manner by a cam or cams respectively formed on the driven shaft.
  • the shaft is supported by a bearing 12.
  • a device 13 Carried on the extending portion of the shaft is a device 13 which includes a hub 14 which is secured to the shaft.
  • the hub is provided with flange portions 15 positioned near the body portion of the pump.
  • a bearing sleeve 16 surrounding the extended hollow cylindrical portion of the hub is a bearing sleeve 16 about which is mounted a hollow cylindrical member 17.
  • the member 17 is provided with an annular flange portion 18 constituting a drive element and the member 17 is retained in position by a circlip.
  • the flange portion 18 carries a peripherally toothed wheel (not shown) which in use, is driven by a toothed wheel of the engine with which the pump is as sociated.
  • the aforesaid mechanism is lubricated by a lubricant which is contained within the aforesaid annular space 20 by means of a cover 26.
  • the cover 26 is of generally cup shaped form having an outwardly extending flange 27 at its open end.
  • the flange 27 is bolted to the flange l8 and a sealing gasket is interposed therebetween to ensure a fluid tight seal.
  • the base wall of the cover is provided with a central aperture through which a portion of the hub extends but the cover is provided with an integral hollow cylindrical portion 28 extending from the periphery of the aperture to within the pump body.
  • mounted in the pump body is an oil seal 29 which establishes a liquid seal between the outer cylindrical surface of the portion 28 and the pump body. In this manner, the diameter of the seal 29 is much smaller than the seals in the prior art devices.
  • a bearing sleeve may be provided between the portion 28 of the cover and the portion of the hub 14 which projects into the pump casing
  • Lubricant is supplied to the annular space by means of a groove 30 formed on the shaft 11. In communication with the groove 30 is a drilling 31 which opens into the space. The lubricant enters the space from the interior of the pump body.
  • a fuel injection pump including a body containing a pump, a driven shaft having a portion extending from the body, and a device for enabling the timing of injection of fuel to an associated engine to be varied in accordance with the speed at which the pump is driven, said device being located externally of the pump body and comprising means secured to the extending portion of the shaft, a drive element, speed responsive means for adjusting the angular relationship between the drive element and the shaft in accordance with the speed at which the pump is driven, a cover for said device secured to and sealingly engaged with said drive element and having a hollow cylindrical portion which surrounds said extending shaft portion and projects into the body of the pump, seal means provided between the body of the pump and the outer peripheral surface of said cylindrical portion of the cover.
  • the fuel injection pump as claimed in claim 5 including spring means for biasing the weights against outward movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
US76510A 1969-09-30 1970-09-29 Fuel injection pumps Expired - Lifetime US3683879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4797269 1969-09-30

Publications (1)

Publication Number Publication Date
US3683879A true US3683879A (en) 1972-08-15

Family

ID=10446905

Family Applications (1)

Application Number Title Priority Date Filing Date
US76510A Expired - Lifetime US3683879A (en) 1969-09-30 1970-09-29 Fuel injection pumps

Country Status (7)

Country Link
US (1) US3683879A (enExample)
BR (1) BR7022571D0 (enExample)
DE (1) DE2047512B2 (enExample)
ES (1) ES384524A1 (enExample)
FR (1) FR2062610A5 (enExample)
GB (1) GB1318033A (enExample)
ZA (1) ZA706399B (enExample)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951118A (en) * 1974-12-19 1976-04-20 Caterpillar Tractor Co. Engine timing device
DE2725414A1 (de) * 1977-06-04 1978-12-14 Bosch Gmbh Robert Fliehkraftversteller, insbesondere zur aenderung des zuend- bzw. einspritzzeitpunktes bei brennkraftmaschinen
US4425896A (en) 1981-03-31 1984-01-17 Nippondenso Co., Ltd. Fuel injection advance apparatus
US4572144A (en) * 1983-03-26 1986-02-25 Nippondenso Co., Ltd. Fuel injection timing control device
US4577592A (en) * 1984-06-27 1986-03-25 Bosch Henery G K Self adjusting camshaft gear for internal combustion engines
US4995368A (en) * 1988-02-04 1991-02-26 Nippondenso Co., Ltd. Fuel injection timing apparatus
US5031585A (en) * 1990-05-07 1991-07-16 Eaton Corporation Electromagnetic brake for a camshaft phase change device
EP0519356A3 (en) * 1991-06-21 1993-07-28 Kloeckner-Humboldt-Deutz Aktiengesellschaft Adjusting device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952219A1 (de) * 1979-12-22 1981-07-02 Robert Bosch Gmbh, 7000 Stuttgart Einspritzzeitpunktversteller fuer brennkraftmaschinen
DE3318024C2 (de) * 1983-05-18 1987-04-23 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Spritzversteller für die Einspritzpumpe von Kolbenbrennkraftmaschinen
AT399023B (de) * 1984-05-04 1995-03-27 Friedmann & Maier Ag Einrichtung zur drehzahlabhängigen verstellung des relativen drehwinkels zwischen zwei drehgekuppelten bauteilen
IT1193451B (it) * 1986-07-22 1988-06-22 Weber Spa Dispositivo per la regolazione automatica dell anticipo dell iniezione per un motore a combustione interna ad accensione per compressione
DE4227123A1 (de) * 1992-08-17 1994-02-24 Kloeckner Humboldt Deutz Ag Einrichtung zur drehzahlabhängigen Verstellung des relativen Drehwinkels zwischen drehgekuppelten Bauteilen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT173903B (de) * 1950-12-13 1953-02-10 Oesterr Saurerwerke Ag Einrichtung zur selbsttätigen Verstellung des Spritzbeginnes von Einspritzpumpen für Brennkraftmaschinen
US2722813A (en) * 1952-02-09 1955-11-08 Bosch Gmbh Robert Automatic phase alteration couplings for shafts
US2743593A (en) * 1952-05-23 1956-05-01 Bosch Arma Corp Hydraulic automatic timer
AT188965B (de) * 1953-07-02 1957-03-25 Hans Dipl Ing Dr Techn List Vorrichtung zur selbsttätigen Verstellung des Spritzbeginnes von Einspritzpumpen für Brennkraftmaschinen
US2829630A (en) * 1956-01-07 1958-04-08 Kloeckner Humboldt Deutz Ag Control device for fuel injection pumps
US3062027A (en) * 1960-12-03 1962-11-06 Mecanique Appliquee S I G M A Coupling for fuel injection pumps
US3091231A (en) * 1959-03-12 1963-05-28 Sigma Fuel injection pumps

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT173903B (de) * 1950-12-13 1953-02-10 Oesterr Saurerwerke Ag Einrichtung zur selbsttätigen Verstellung des Spritzbeginnes von Einspritzpumpen für Brennkraftmaschinen
US2722813A (en) * 1952-02-09 1955-11-08 Bosch Gmbh Robert Automatic phase alteration couplings for shafts
US2743593A (en) * 1952-05-23 1956-05-01 Bosch Arma Corp Hydraulic automatic timer
AT188965B (de) * 1953-07-02 1957-03-25 Hans Dipl Ing Dr Techn List Vorrichtung zur selbsttätigen Verstellung des Spritzbeginnes von Einspritzpumpen für Brennkraftmaschinen
US2829630A (en) * 1956-01-07 1958-04-08 Kloeckner Humboldt Deutz Ag Control device for fuel injection pumps
US3091231A (en) * 1959-03-12 1963-05-28 Sigma Fuel injection pumps
US3062027A (en) * 1960-12-03 1962-11-06 Mecanique Appliquee S I G M A Coupling for fuel injection pumps

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951118A (en) * 1974-12-19 1976-04-20 Caterpillar Tractor Co. Engine timing device
DE2725414A1 (de) * 1977-06-04 1978-12-14 Bosch Gmbh Robert Fliehkraftversteller, insbesondere zur aenderung des zuend- bzw. einspritzzeitpunktes bei brennkraftmaschinen
US4227498A (en) * 1977-06-04 1980-10-14 Robert Bosch Gmbh Centrifugal governor, particularly applicable for the alteration of ignition or injection timing in internal combustion engines
US4425896A (en) 1981-03-31 1984-01-17 Nippondenso Co., Ltd. Fuel injection advance apparatus
US4572144A (en) * 1983-03-26 1986-02-25 Nippondenso Co., Ltd. Fuel injection timing control device
US4577592A (en) * 1984-06-27 1986-03-25 Bosch Henery G K Self adjusting camshaft gear for internal combustion engines
US4995368A (en) * 1988-02-04 1991-02-26 Nippondenso Co., Ltd. Fuel injection timing apparatus
US5031585A (en) * 1990-05-07 1991-07-16 Eaton Corporation Electromagnetic brake for a camshaft phase change device
EP0519356A3 (en) * 1991-06-21 1993-07-28 Kloeckner-Humboldt-Deutz Aktiengesellschaft Adjusting device

Also Published As

Publication number Publication date
FR2062610A5 (enExample) 1971-06-25
ZA706399B (en) 1971-05-27
BR7022571D0 (pt) 1973-01-09
ES384524A1 (es) 1973-01-16
DE2047512B2 (de) 1975-11-13
GB1318033A (en) 1973-05-23
DE2047512A1 (de) 1971-04-01

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