US3791361A - Rpm regulator for a fuel injection pump serving an internal combustion engine - Google Patents

Rpm regulator for a fuel injection pump serving an internal combustion engine Download PDF

Info

Publication number
US3791361A
US3791361A US00280867A US3791361DA US3791361A US 3791361 A US3791361 A US 3791361A US 00280867 A US00280867 A US 00280867A US 3791361D A US3791361D A US 3791361DA US 3791361 A US3791361 A US 3791361A
Authority
US
United States
Prior art keywords
pump
centrifugal weights
sleeve
rpm
governor
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
US00280867A
Other languages
English (en)
Inventor
K Hofmann
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 US3791361A publication Critical patent/US3791361A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • 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
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/04—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by mechanical means dependent on engine speed, e.g. using centrifugal governors
    • F02D1/045—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by mechanical means dependent on engine speed, e.g. using centrifugal governors characterised by arrangement of springs or weights
    • 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
    • F02M41/10—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 pump pistons acting as the distributor
    • F02M41/12—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 pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—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 pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/125—Variably-timed valves controlling fuel passages
    • F02M41/126—Variably-timed valves controlling fuel passages valves being mechanically or electrically adjustable sleeves slidably mounted on rotary piston

Definitions

  • Greigg ABSTRACT In a fuel injection pump associated with an internal combustion engine, the fuel quantities injected during each pressure stroke on the one hand and the injection start on the other hand are separately regulated as a function of the engine-rpm by two groups of centrifugal weights, each group displacing a separate governor member moving independently from the other.
  • This invention relates to an rpm regulator for a fuel injection pump associated with an internal combustion engine and is of the type that includes a centrifugal governor having a first group of centrifugal weights actuating the fuel quantity control member of the fuel injection pump and a second group of centrifugal weights affecting the position of a timing member that determines the injection start during each pressure stroke of the fuel injection pump.
  • FIG. 1 is a schematic, partially sectional view of the preferred embodiment with parts of the fuel injection P p
  • FIG. 2 is a view in the direction of the axis of rotation, of the arrangement of the centrifugal weights and
  • FIG. 3 is an axial view of a part of the regulator and the fuel injection pump.
  • a pump drive shaft 2 which journals a radial cam disc 3 which carries four cams 4 (that is, as many cams as there are cylinders in the engine).
  • the cam track of the cam disc 3 engages rollers 5 which, in turn, journal about pins 6 stationarily supported in the housing 1.
  • a pump-and-distributor member 8 which, at its driven end, has a collar 9 which, in turn, is coupled by means of a pin 10 with the cam disc 3.
  • pump-and-distributor member 8 slides in a pump body 12 which is closed by means of a plug 13.
  • the inner chamber 14 of the fuel injection pump is filled with slightly pressurized fuel taken from a source, not shown. From the chamber 14 there extends an inlet channel 15 which cooperates with four longitudinal, axially parallel extending grooves 16 provided in the lateral face of the pump-and-distributor member 8.
  • the longitudinal grooves 16 are in communication with a pump work chamber 17 and with an annular groove 18 provided on the pump-and-distributor member 8. From the annular groove 18 there extends a distributor groove 19 in the pump-and-distributor member 8 for cooperation with four outlet channels 20 (only one shown).
  • the inlet channel 15 is offset with respect to the outlet channels 20 in such a manner that, dependent upon the position of the pump-and-distributor member 8, either the inlet channel 15 communicates with one of the axial grooves 16 or the distributor groove 19 communicates with one of the outlet channels 20.
  • Each of these outlet channels 20 leads to a spring-biased pressure valve 22 to which there is coupled an injection conduit (not shown) leading to a fuel injection nozzle (also not shown) associated with an engine cylinder.
  • a control sleeve 26 is mounted for axial and angular displacement on the pump-and distributor member 8.
  • the radial face 27 of the control sleeve 26 cooperates with the radial port 24.
  • an oblique control surface 28 which cooperates with the radial channels 25.
  • a spur gear 29 which meshes with a spur gear 30.
  • the latter is affixed to the hub of a cage 31 which is fixedly attached to a setting shaft 32 journaling in the housing 1.
  • the cage 31 there are swingably arranged two groups of centrifugal weights 33 and 34, respectively.
  • the first group comprises four centrifugal weights 33 which are in engagement with a governor sleeve 35.
  • the second group is formed of two centrifugal weights 34 which,,in turn, engage a governor sleeve 36.
  • the governor sleeves 35 and 36 are telescopically disposed; the governor sleeve 35 is guided on the setting shaft 32.
  • the first group of centrifugal weights serves for the rpm-dependent alteration of the delivered fuel quanti ties of the fuel injection pump and for this purpose actuates, through the governor sleeve 35, a lever 37 which, after swinging freely along a short path, engages a lever 38.
  • the levers 37 and 38 are connected to resetting springs 41 and 42, the bias of which is variable by means of alever 43.
  • the latter is carried at one end of a pin 44 supported in the housing 1.
  • the other end of the pin 44 carries an arbitrarily adjustable setting lever 45 which, in its shown terminal position, engages an abutment pin 46.
  • the second group of centrifugal weights serves for shifting the starting moment of the injection and for this purpose actuates through the governor sleeve 36 a lever 48 which is connected to a resetting spring 49 attached to a post 50 fixedly secured to the housing 1.
  • the levers 37 and 38 are pivotally held by a pin 51.
  • the lever 37 has two arms; its arm 37' carries a sphere 52 which projects into a longitudinal depression 53 provided in the control sleeve 26.
  • the lever 48 which also has two arms, is pivotableabout a support pin 54 and extends with its spherical end 48' into a circumferentially oriented depression 55 provided in the control sleeve 26.
  • the drive shaft 2 of the pump, the cam disc 3 and the pump-and-distributor member 8 coupled to the drive shaft 2 rotate with an rpm that is a function of the engine rpm.
  • the cam disc 3, in cooperation with the rollers 5 causes an axial reciprocating motion of the pump-and-distributor member 8 in addition to its rotation.
  • the cam disc 3 is maintained in continuous contact with the rollers 5 by virtue of the spring 11.
  • the pump-and-distributor member 8 is shown in H0. 1 in its lower dead center.
  • the pump work chamber 17 is charged with fuel through the inlet channel 15.
  • the inlet channel is closed by the lateral face of the pumpand-distributor member 8, a precondition for starting, the effective pressure stroke of the pump-anddistributor member 8.
  • fuel is delivered from the pump work chamber 17 through the channels 16 into the annular groove 18 and therefrom through the distributor groove 19 into one of the outlet channels 20 and through the associated pressure valve 22 to a fuel injection nozzle of the internal combustion engine.
  • the beginning and the end of the injection is determined by virtue of the cooperation of the frontal face 27 of the control sleeve 26 with the channel 24 and the control face 28 with one of the channels 25.
  • the effective pressure stroke begins when the channel 24 is closed by the control sleeve 26 and terminates when the control face 28 opens the channel 25.
  • the duration of injection and thus the injected fuel quantities may be altered by rotating the control sleeve 26 with the aid of the lever 37, 37', whereas the beginning of injection may be shifted by means of an axial displacement of the control sleeve 26 with the aid of the lever 48.
  • the aforedescribed rpm regulator operates as follows:
  • the governor sleeve 35 during its aforenoted rightward displacement, first causes the lever 37, 37 to pivot against the force of the relatively weak and soft spring 41 until the lever 37, 37 engages the lever 38. Since the lever 45 is in engagement with the abutment 46 and the spring 42 has only a weak bias, the centrifugal weights 33, after the internal combustion engine is started, also cause a pivotal motion of the lever 38, so that the control sleeve 26 sets the oblique control face 28 for a smaller fuel quantity. Thus, the fuel quantity will be decreased from the starting fuel quantities to the quantities necessary for the idling run of the engine.
  • the two centrifugal weights 34 affecting the governor sleeve 36 pivot against the force of the spring 59 as the rpm increases and cause, through the governor sleeve 36, a pivotal motion of the lever 48 which thus axially displaces the control sleeve 26.
  • the position of the radial face 27 with respect to the channel 24 changes and, as a result, the moment of injection start of the fuel injection pump is varied.
  • the two groups of centrifugal weights actuate separate governor sleeves 35 and 36, a quantity setting of the fuel injection pump is possible throughout the entire rpm range independently from the setting of the injection start.
  • the described rpm regulator is of simple, economical structure.
  • an rpm regulator for a fuel injection pump serving an internal combustion engine said fuel injection pump being of the known type that has (a) a rotary component having an engine-rpm dependent rotational speed, (b) a fuel quantity control member, the position of which determines the fuel quantities delivered to said engine for injection, (c) a timing member, the position of which determines the movement of injection start during each pressure stroke of the pump, said rpm regulator being of the known type that has (a) a first group of centrifugal weights secured to said rotary component and affecting the position of said fuel quantity control member, (b) a second group of centrifugal weights secured to said rotary component and affecting the position of said timing member, (c) resetting spring means opposing the force of said centrifugal weights exerted on said members, the improvement comprising A. a first sleeve-like governor member connected to said centrifugal weights forming said first group to be displaced by the latter to an rpm-dependent extent,
  • An improvement as defined in claim ll including a setting shaft supporting at least indirectly said centrifugal weights, said setting shaft having an axis about which said centrifugal weights rotate, said inner governor sleeve being slidably disposed on said setting shaft.
  • said fuel injection pump includes A. a pump body,
  • a pump-and-distributor member disposed at least partially in said pump body and connected to said rotary component to be rotated by the latter, said pump-and'distributor member cooperating with said pump work chanber,

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Fuel-Injection Apparatus (AREA)
US00280867A 1971-09-09 1972-08-15 Rpm regulator for a fuel injection pump serving an internal combustion engine Expired - Lifetime US3791361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2145036A DE2145036C3 (de) 1971-09-09 1971-09-09 Regeleinrichtung für Einspritzpumpen von Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3791361A true US3791361A (en) 1974-02-12

Family

ID=5819053

Family Applications (1)

Application Number Title Priority Date Filing Date
US00280867A Expired - Lifetime US3791361A (en) 1971-09-09 1972-08-15 Rpm regulator for a fuel injection pump serving an internal combustion engine

Country Status (7)

Country Link
US (1) US3791361A (de)
JP (1) JPS5617530B2 (de)
AT (1) AT313642B (de)
DE (1) DE2145036C3 (de)
FR (1) FR2152182A5 (de)
GB (1) GB1395384A (de)
IT (1) IT967266B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980066A (en) * 1974-04-02 1976-09-14 C.A.V. Limited Fuel injection pumping apparatus
US3989021A (en) * 1974-03-22 1976-11-02 Diesel Kiki Co., Ltd. Dash pot arrangement for distribution type fuel injection pump cut off barrel
US4026260A (en) * 1975-08-04 1977-05-31 Caterpillar Tractor Co. Speed sensitive fuel control system
US4041921A (en) * 1973-12-13 1977-08-16 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
WO1982003888A1 (en) * 1981-05-04 1982-11-11 Alexander Goloff Adjustable pilot injection for fuel injection apparatus
US4438746A (en) * 1981-09-22 1984-03-27 Robert Bosch Gmbh Rpm governor for a fuel injection pump
USRE32965E (en) * 1984-07-31 1989-06-27 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US5027767A (en) * 1988-09-02 1991-07-02 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211520A (en) * 1978-01-20 1980-07-08 Caterpillar Tractor Co. Timing control for sleeve metering fuel system
AT366153B (de) * 1978-09-21 1982-03-25 Friedmann & Maier Ag Regeleinrichtung fuer brennstoffeinspritzpumpen von dieselmaschinen
AT370213B (de) * 1980-06-11 1983-03-10 Friedmann & Maier Ag Regelung einer einspritzeinrichtung fuer mehrzylindrige einspritzbrennkraftmaschinen
JPS5853646A (ja) * 1981-09-24 1983-03-30 Hitachi Ltd 燃料噴射ポンプの制御装置
DE3428176C2 (de) * 1984-07-31 1994-08-25 Bosch Gmbh Robert Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE3522451A1 (de) * 1985-06-22 1987-01-02 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3601019A1 (de) * 1986-01-16 1987-07-23 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
US4737086A (en) * 1986-05-27 1988-04-12 Diesel Kiki Co., Ltd. Fuel injection pump having variable prestroke mechanism
US4813389A (en) * 1986-10-20 1989-03-21 Elsbett L Fuel injection system for internal combustion engines
DE3644584A1 (de) * 1986-12-27 1988-07-07 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3800004A1 (de) * 1987-01-02 1988-07-28 Elsbett L Fliehkraftmechanismus fuer regelvorgaenge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1602208A (en) * 1921-05-14 1926-10-05 Price Engine Corp Fuel regulation for injection-type engines
US3638631A (en) * 1969-03-08 1972-02-01 Bosch Gmbh Robert R.p.m. regulator for fuel injection pumps
US3673996A (en) * 1970-10-02 1972-07-04 Allis Chalmers Mfg Co Fuel injection pump timing and metering arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1602208A (en) * 1921-05-14 1926-10-05 Price Engine Corp Fuel regulation for injection-type engines
US3638631A (en) * 1969-03-08 1972-02-01 Bosch Gmbh Robert R.p.m. regulator for fuel injection pumps
US3673996A (en) * 1970-10-02 1972-07-04 Allis Chalmers Mfg Co Fuel injection pump timing and metering arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041921A (en) * 1973-12-13 1977-08-16 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US3989021A (en) * 1974-03-22 1976-11-02 Diesel Kiki Co., Ltd. Dash pot arrangement for distribution type fuel injection pump cut off barrel
US3980066A (en) * 1974-04-02 1976-09-14 C.A.V. Limited Fuel injection pumping apparatus
US4026260A (en) * 1975-08-04 1977-05-31 Caterpillar Tractor Co. Speed sensitive fuel control system
WO1982003888A1 (en) * 1981-05-04 1982-11-11 Alexander Goloff Adjustable pilot injection for fuel injection apparatus
US4438746A (en) * 1981-09-22 1984-03-27 Robert Bosch Gmbh Rpm governor for a fuel injection pump
USRE32965E (en) * 1984-07-31 1989-06-27 Robert Bosch Gmbh Fuel injection pump for internal combustion engines
US5027767A (en) * 1988-09-02 1991-07-02 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

Also Published As

Publication number Publication date
DE2145036C3 (de) 1980-08-28
GB1395384A (en) 1975-05-29
FR2152182A5 (de) 1973-04-20
AT313642B (de) 1974-02-25
JPS4836517A (de) 1973-05-30
DE2145036A1 (de) 1973-03-15
JPS5617530B2 (de) 1981-04-23
IT967266B (it) 1974-02-28
DE2145036B2 (de) 1979-12-20

Similar Documents

Publication Publication Date Title
US3791361A (en) Rpm regulator for a fuel injection pump serving an internal combustion engine
US3758241A (en) Fuel injection pump for multi-cylinder internal combustion engines
US3147746A (en) Injection pump adjusting structure
US4080109A (en) Fuel injection pumping apparatus
US2156933A (en) Metering pump
US4660522A (en) Fuel injection pump for internal combustion engines
US3323506A (en) Fuel injection pumps having a rotating distributing valve
US3228339A (en) Liquid fuel pumps
US3381615A (en) Driving and timing mechanism for fuel injection pump
US4211520A (en) Timing control for sleeve metering fuel system
GB1322538A (en) Fuel injection pumps for internal combustion engines
US3506381A (en) Liquid fuel pumping apparatus for supplying fuel to internal combustion engines
US3313282A (en) Fuel injection pump governor
US4055387A (en) Liquid fuel injection pumping apparatus
JPS6231647Y2 (de)
US3980066A (en) Fuel injection pumping apparatus
GB2099611A (en) Fuel injection pump for internal combustion engines
US3101079A (en) Liquid fuel pumps for internal combustion engines
US4387683A (en) Fuel injection pump for internal combustion engines
US3443554A (en) Fuel injection pump
US4541391A (en) Timing control for fuel injection apparatus
US4438746A (en) Rpm governor for a fuel injection pump
US4531492A (en) Fuel injection timing and governor control apparatus
US4164922A (en) Timing control system affording maintenance of fuel quanity delivered
US4348995A (en) Fuel pumping apparatus