US3702577A - Drive shaft positioning device associated with fuel injection pumps - Google Patents

Drive shaft positioning device associated with fuel injection pumps Download PDF

Info

Publication number
US3702577A
US3702577A US105537A US3702577DA US3702577A US 3702577 A US3702577 A US 3702577A US 105537 A US105537 A US 105537A US 3702577D A US3702577D A US 3702577DA US 3702577 A US3702577 A US 3702577A
Authority
US
United States
Prior art keywords
locking pin
pump
support
notch
drive shaft
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
US105537A
Other languages
English (en)
Inventor
Heinrich Staudt
Rolf Prillwitz
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
Application granted granted Critical
Publication of US3702577A publication Critical patent/US3702577A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M59/44—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
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • ABSTRACT For detemiining the fuel starting position of a drive shaft associated with a fuel injection pump, to the pump housing there is affixed a device which includes a locking pin shiftable into a position in which it drops into a notch on the drive shaft when the latter is in its previously determined fuel starting position.
  • This invention relates to a fuel injection pump for internal combustion engines and concerns means for setting the pump drive shaft into a predetermined position, particularly into a position in which the pump starts its cycle of fuel delivery. This position of the pump drive shaft will be referred to hereinafter as fuel starting position.
  • a device which is affixed to the fuel injection pump housing in the vicinity of a component affixed to, and moving in unison with the pump drive shaft.
  • the device includes a slidable locking pin which may be shifted into a notch which is provided in the periphery of said component attached to the pump drive shaft and which is in registry with the locking pin when the pump drive shaft is in the fuel starting position.
  • FIG. 1 is a sectional view of the preferred embodiment of the invention in a disengaged position
  • FIG. 2 is a sectional view of the same embodiment in a locking position
  • FIG. 3 is an elevational view of the same embodiment as seen in the direction of arrow III in FIG. 1;
  • FIG. 4 is an elevational view of the same embodiment as it appears when attached to the regulator housmg.
  • the device 13 comprises a support 16 that includes an integral mounting flange 17 and is provided with a centrally extending guide bore 19. The latter projects with substantial lateral play into an opening 28 of the pump housing 10.
  • the openings 38 in the flange 17 are so dimensioned that bolts 14 passing through bores 38 permit such lateral play.
  • the purpose of the latter is the possibility of proper alignment (up or down, when viewed in FIG. 1) of the device 13 while being mounted on housing 10.
  • a locking pin 20 In the guide bore 19 there is disposed a locking pin 20, one terminus 21 of which is preferably formed as a small sphere to avoid jamming.
  • the other terminus of locking pin 20 carries a disc-like collar 22 engaged by one end of a coil spring 23.
  • the inner wall portions of housing 16 define an annular space 24 into which the spring 23 extends.
  • the end of spring 23 remote from the collar 22 engages the base of annular space 24 in support 16.
  • the locking pin 20 is urged by spring 23 into its initial or inoperative position and abuts, as shown in FIG. 1, by means of a circlip 25 disposed adjacent the sphere 21, a frontal face 26 of the support 16.
  • the circlip 25 further permits a simple installation of the locking pin 20.
  • the annular space 24 is closed by means of a hollow threaded lid 31 provided with a hexagonal head 30.
  • the lid 31 clamps an O-ring 32 against the support 16 thus providing a fluid-tight seal for the annular space 24 with respect to the external environment.
  • the device 13 is immobilized with respect to the fuel injection pump 11 by means of a dowel pin 35 which is force fitted in a bore 36 of the mounting flange 12 and in an aligned bore 37 of the mounting flange l7.
  • the drive shaft 40 of the fuel injection pump 11 carries a fixedly attached eccentric 41.
  • the eccentric 41 has a notch 42 including two axially parallel lateral faces 43 which converge in the direction of the pump shaft axis. It is to be understood that the notch may also be provided in a cylindrical collar keyed to the pump drive shaft 40, or may be machined into the shaft 40 itself.
  • FIGS. 1 and 2 there is further shown a cam 46 which is keyed to the pump drive shaft 40 and which causes reciprocation of a striker assembly 45 which, in turn, causes a pump piston (not shown) to execute alternating pressure and suction strokes.
  • a cam 46 is shown in its upper dead center, while in FIG. 2 the cam 46 is in a fuel starting position.
  • the device 13 instead of being attached to the pump housing 10, is affixed to the housing 49 of a regulator 48 that is fixedly secured to the fuel injection pump 11.
  • the notch which cooperates with the locking pin 20 is provided in a component that is keyed to the drive shaft 40, such as a driving member of a centrifugal weighttype governor, or a gear if the regulator includes a stepup or step-down gear assembly.
  • the cam 46 of the drive shaft 40 is in the fuel starting position and the notch 42 provided in the eccentric 41 is oriented towards the device 13.
  • the stroke portion traveled by the pump piston or, the traveling path of the striker 45 up to the fuel starting position is designated with H.
  • the device 13, which at this point is not yet secured with the pin 35 (also, the bore 36 is not yet provided) and is thus only temporarily mounted, is loosened to such an extent that it may be shifted as permitted by the clearance between opening 38 and the associated bolt 14.
  • the threaded lid 31 shown in FIG. 1 is removed.
  • a force (such as thumb pressure) is exerted on the exposed collar 22 resulting in an inward shift of locking pin 20 against the force of the spring 23, until the spherical terminus 21 nests in the notch 42.
  • the support 16 has moved into its permanent, aligned position; any tolerances in the machining of parts are thus compensated.
  • the nuts are tightened.
  • the bore 36 is drilled in the mounting flange 12 through the preexistent bore 37 and then the dowel pin 35 is inserted. At this point the fuel starting position of the pump shaft 40 is determined.
  • the locking pin may be maintained in its engaged position until the termination of the assembly by means of a separate threaded holding plate or the like inserted in the place of the threaded lid 31.
  • the locking pin 20 is automatically withdrawn from the notch 42 by virtue of the force of spring 23, whereupon the threaded lid 31 is, subsequent to inserting the O-ring 32, positioned in place and tightened. It is thus seen that upon performing any subsequent repair or maintenance work, the proper setting of the fuel injection pump with respect to the drive cam on the pump drive shaft ma be effected in a simple manner by means of device 3. It suffices to remove lid 31, push the locking pin 20 inwardly and rotate the shaft 40 until the head 21 of the locking pin 20 drops into the notch 42, thus immobilizing shaft 40.
  • a fuel injection pump of the type including (a) a housing and (b) a pump drive shaft rotatably held in said housing, the improvement comprising in combination A. means defining a notch on said pump drive shaft,
  • said notch rotating with said pump drive shaft as a unit and having two spaced lateral faces converging toward the pump drive shaft axis and extending parallel to the length dimension thereof and B. an indexing assembly secured to said housing and having 1. a support,
  • a locking pin axially slidably held in said support and adapted to assume an operative position in which it nests in said notch to index said pump shaft in a predetermined angular position, said locking pin being adapted to assume a withdrawn position in which it allows an unobstructed rotation of said pump shaft,
  • first securing means adjustably attaching said support to said housing for setting the lateral position of said locking pin with respect to said pump shaft
  • second securing means for rigidly affixing said support to said housing subsequent to the setting of said lateral position.
  • terminus of said locking pin has a diameter smaller than the maximum distance and greater than the minimum distance between said two spaced converging lateral faces of said notch.
  • said means defining a notch includes an eccentric affixed to said pump shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US105537A 1970-01-10 1971-01-11 Drive shaft positioning device associated with fuel injection pumps Expired - Lifetime US3702577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702000997 DE2000997A1 (de) 1970-01-10 1970-01-10 Kraftstoffeinspritzpumpe fuer Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3702577A true US3702577A (en) 1972-11-14

Family

ID=5759359

Family Applications (1)

Application Number Title Priority Date Filing Date
US105537A Expired - Lifetime US3702577A (en) 1970-01-10 1971-01-11 Drive shaft positioning device associated with fuel injection pumps

Country Status (6)

Country Link
US (1) US3702577A (es)
AT (1) AT304945B (es)
DE (1) DE2000997A1 (es)
ES (1) ES194982Y (es)
FR (1) FR2075361A5 (es)
GB (1) GB1330455A (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385867A (en) * 1979-12-06 1983-05-31 Robert Bosch Gmbh Apparatus for positionally fixing a drive shaft disposed in a fuel injection pump for internal combustion engines
US4499757A (en) * 1982-07-08 1985-02-19 Egbert Backe Device and method for locking a drive shaft disposed in a fuel injection pump for internal combustion engines and holding bolt therefor
US4539964A (en) * 1983-08-30 1985-09-10 Robert Bosch Gmbh Fuel injection pump structure for an internal combustion engine
DE3816297A1 (de) * 1988-05-13 1989-11-23 Kloeckner Humboldt Deutz Ag Drehwinkelmessvorrichtung
US4887944A (en) * 1980-01-29 1989-12-19 Lucas Industries Public Limited Company Fuel injection pump including plunger setting device
US20070065297A1 (en) * 2005-09-21 2007-03-22 Geoffrey Bootle Measurement device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES498469A0 (es) * 1980-02-08 1982-03-01 Lucas Industries Ltd Un aparato bombeador de inyeccion de combustible
AT386255B (de) * 1983-06-06 1988-07-25 Steyr Daimler Puch Ag Je einem zylinder eines mehrzylinder-dieselmotors zugeordnetes einspritzaggregat
SE500496C2 (sv) * 1993-04-22 1994-07-04 Scania Cv Ab Pumpsynkroniseringsnav

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2407696A (en) * 1945-06-07 1946-09-17 George C Webster Detent mechanism
US2624327A (en) * 1950-03-30 1953-01-06 American Bosch Corp Fuel injection apparatus
US2743594A (en) * 1951-08-08 1956-05-01 Bosch Arma Corp Timing device for fuel injection apparatus
US2829630A (en) * 1956-01-07 1958-04-08 Kloeckner Humboldt Deutz Ag Control device for fuel injection pumps
US3004410A (en) * 1957-03-21 1961-10-17 Gen Motors Corp Adjustable timing device
US3183739A (en) * 1962-04-06 1965-05-18 Rajewski Z Ted Indexing device
US3552219A (en) * 1968-04-27 1971-01-05 Kloeckner Humboldt Deutz Ag Fuel injection pump for internal combustion engines having a plurality of combustion chambers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2407696A (en) * 1945-06-07 1946-09-17 George C Webster Detent mechanism
US2624327A (en) * 1950-03-30 1953-01-06 American Bosch Corp Fuel injection apparatus
US2743594A (en) * 1951-08-08 1956-05-01 Bosch Arma Corp Timing device for fuel injection apparatus
US2829630A (en) * 1956-01-07 1958-04-08 Kloeckner Humboldt Deutz Ag Control device for fuel injection pumps
US3004410A (en) * 1957-03-21 1961-10-17 Gen Motors Corp Adjustable timing device
US3183739A (en) * 1962-04-06 1965-05-18 Rajewski Z Ted Indexing device
US3552219A (en) * 1968-04-27 1971-01-05 Kloeckner Humboldt Deutz Ag Fuel injection pump for internal combustion engines having a plurality of combustion chambers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385867A (en) * 1979-12-06 1983-05-31 Robert Bosch Gmbh Apparatus for positionally fixing a drive shaft disposed in a fuel injection pump for internal combustion engines
US4887944A (en) * 1980-01-29 1989-12-19 Lucas Industries Public Limited Company Fuel injection pump including plunger setting device
US4499757A (en) * 1982-07-08 1985-02-19 Egbert Backe Device and method for locking a drive shaft disposed in a fuel injection pump for internal combustion engines and holding bolt therefor
US4539964A (en) * 1983-08-30 1985-09-10 Robert Bosch Gmbh Fuel injection pump structure for an internal combustion engine
DE3816297A1 (de) * 1988-05-13 1989-11-23 Kloeckner Humboldt Deutz Ag Drehwinkelmessvorrichtung
US20070065297A1 (en) * 2005-09-21 2007-03-22 Geoffrey Bootle Measurement device
US7832990B2 (en) * 2005-09-21 2010-11-16 Delphi Technologies Holding S.Arl Measurement device

Also Published As

Publication number Publication date
ES194982Y (es) 1975-06-01
DE2000997A1 (de) 1971-07-22
GB1330455A (en) 1973-09-19
ES194982U (es) 1975-01-01
AT304945B (de) 1973-01-25
FR2075361A5 (es) 1971-10-08

Similar Documents

Publication Publication Date Title
US3702577A (en) Drive shaft positioning device associated with fuel injection pumps
KR940009684B1 (ko) 내연기관에 분사 펌프를 설치하는 방법 및 이것에 속하는 내연기관
US5459940A (en) Apparatus and process for determining top dead center of a piston and crank shaft in an internal combustion engine
US3707144A (en) Fuel control device for fuel injection pump governors
US2860407A (en) Puller for timing gears of internal combustion engines
US4322174A (en) Cam shaft locking device for fuel injection pump
GB2065792A (en) Arrangement for locking a drive shaft disposed in a fuel injection pump for internal combustion engines
US5845397A (en) Static timing method for heavy duty diesel engines
US4455868A (en) Method for mounting at least one single-cylinder plug-in fuel injection pump on a diesel internal combustion engine
US5233960A (en) Engine ignition timing adjustment device
US2937637A (en) Injection pump
KR100383486B1 (ko) 연료분사장치를엔진에장착하는방법과연료분사장치
CN201068821Y (zh) 弹簧式正时销定位装置
US4418675A (en) Adjusting device for a fuel-injection pump of an internal combustion engine
US4190401A (en) Lock assembly for a drive shaft of a fuel injection pump for internal combustion engines
CN214213586U (zh) 一种曲轴正时定位装置
US2449120A (en) Fuel injection mechanism
US4029069A (en) Fuel supply pump
US1295991A (en) Air-pump for automobiles.
US1612031A (en) Oil-fuel pump for internal-combustion engines
GB978460A (en) Improvements in or relating to internal combustion engines
US2455290A (en) Discharge valve assembly for fuel injector pumps
KR101895693B1 (ko) 장착 자유도 및 체결 풀림 방지 구조가 적용된 고압펌프용 내구시험기
US1115180A (en) Fuel-pump.
SU502127A1 (ru) Устройство дл автоматического регулировани угла опережени впрыска топлива двигател внутреннего сгорани