US3857374A - Liquid fuel injection pumping apparatus - Google Patents

Liquid fuel injection pumping apparatus Download PDF

Info

Publication number
US3857374A
US3857374A US00372494A US37249473A US3857374A US 3857374 A US3857374 A US 3857374A US 00372494 A US00372494 A US 00372494A US 37249473 A US37249473 A US 37249473A US 3857374 A US3857374 A US 3857374A
Authority
US
United States
Prior art keywords
rod
cylindrical member
hollow cylindrical
spill valve
pulley
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
US00372494A
Other languages
English (en)
Inventor
P Glikin
Z Miracki
R Phillips
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.)
Simms Group Research and Development Ltd
Original Assignee
Simms Group Research and Development Ltd
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 Simms Group Research and Development Ltd filed Critical Simms Group Research and Development Ltd
Application granted granted Critical
Publication of US3857374A publication Critical patent/US3857374A/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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/361—Valves being actuated mechanically
    • 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
    • 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
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/361—Valves being actuated mechanically
    • F02M59/362—Rotary valves
    • F02M59/363—Rotary valves arrangements for adjusting the rotary valve

Definitions

  • a fuel pumping apparatus comprises an injection pump defining a pump chamber, and also a spill port extending from the pump chamber, the pump includes a spill valve which is rotatable'in synchronism with the injection pumpto control flow of fuel through the spill port.
  • the axial setting of the spill valve is determined by weights which move the spill valve in opposition to the action-of a spring'and the angular setting is determined by further weights which move a hollow cylindrical member 34 axially against the action of a spring.
  • the cylindrical member has helical spline engagement with a pulley.
  • a liquid fuel injection pumping apparatus in accordance with the invention comprises in combination an injection pumpdefining a pumping chamber, an outlet extending from the pumping chamber and which in use, is connected to an engine cylinder, a spill port extending from the pumping chamber, a spill valve rotatable in synchronism with the injection pump for controlling the fiow of fuel through the spill port during a pumping stroke of the injection pump, the axial setting of said spill valve determining the quantity of fuel supplied through the outlet and the angular setting of the spill valve relative to the injection pump serving to alter the timing of injection of fuel through said outlet to the engine, first centrifugal means for moving the spill valve axially'in a direction to reduce the amount of fuel supplied to the engine, said first centrifugal means effecting movement of the spill valve against the action of first resilient means the force exerted by whichcan be determined by the operator of the engine, and second centrifugal means operable to effect angular movement of the spill valve relative to a driving member for the spill valve.
  • FIG. 1 is a sectional side elevation of part of the apparatus, v
  • FIG. 2 is a section on the line 8-8 of FIG. 1,
  • FIG. 3 is a section on the line E-E of P16. 1, and
  • FIG. 4 is a perspective view of a portion of the apparatus seen in! H6. 1.
  • a body portion which as shown particularlyin FIG. 2, is formed in two parts 11 and 12.
  • the lower part 12 carries a rotary cam shaft 13 which is driven in timed relationship with an engine with which.the apparatus is associated.
  • the camshaft carries a plurality of cams 14 which as the cam shaft rotates, impart inward movement to pumping plungers 15 which are reciprocably located within bores 16 formed in the upper portion 11 of the body part.
  • Each plunger 15 is provided with a spring 17 to urge the plunger outwardly and the end of the plunger is contacted by a tappet 18 which is slidably accommodated within a respective bore located in the lower portion 12 of the body part.
  • the tappet carries a roller 19 for co-operation with the periphery of the cam.
  • the tappet is restrained against angular movement by means ofa suitably positioned screw having an end portion which locates within a groove formed in the tappet.
  • the bores 16 are inclined and in addition are. staggered along the length of the body part and intermediate the bores is located a cen-' tral drilling 20 which accommodates a cylindrical member 21 having grooves formed on its periphery at intervals along its length and registering approximately with the bores 16.
  • Each bore is provided with an outlet 22 for connection respectively with an injection nozzle of the associated engine and the outlets 22 may be controlled by delivery valves not shown.
  • each bore communicates with a spill port 23 which opens into the aforesaid drilling 20 moreover, in the same plane as the spill port 23 there is provided a plurality of spill passages 24 respectively these being located at right angles to the ports 23.
  • the spill passages open into the drilling 20 and at their other ends open into a chamber 25 extending the length of the body of the apparatus.
  • FIGS. 1 and 3 there is secured to the body part 10 a housing 27 into which the cam shaft 13 extends.
  • a toothed wheel 28 about which is engaged a toothed belt 29.
  • the belt also extends around a pulley 30 which is journalled in the housing'27.
  • the pulley 30 is of hollow cylindrical form and mounted on the end of the pulley remote from the body part 107is an outwardly extending fiangeportion 31.
  • the flange portion 31 mounts a plurality of lugs 32 each of which mounts a centrifugally operable weight 33. Four such weights are provided the weights being divided into-pairs for the prupose to be explained.
  • a hollow cylindrical member 34 which forms an abutment for a coiled c'om-.
  • the other abutment for the compression spring 35 is constituted by housing 36 which .is mounted on the flange 31.
  • the axial setting of the member 34 is determined by a pair of the weights 33 which for this purpose are provided with arms 37 (FIG.
  • the arms engaging'with a step defined upon the periphery ofthe member 34.
  • Extending through the member 34 is a rod 38 which is in driving engagement with the member 21 whereby axial and angular movement of the rod 38 will impart axial and angular movement to the member 21.
  • the rod 38 at onepoint along its length is provided with a transversely extending plate 39 which locates in a pair of axially extending slots formed in the member 34.
  • the plate 39 is engaged by legs 40 carried by the other of the pair of weights 33 and axial movement of the rod 38'under the action of the weights 33 is resisted by means of a leaf spring 41 engaged by the end of the rod 38.
  • the leaf spring is pivotally mounted within the housing 27 and operator adjustable means 42 is provided to enable the force exerted spring 41 upon the rod 38, to be adjusted.
  • the member 21 rotates at twice the speed of the cam shaft 13 and it is so positioned relative to the cam shaft that during the inward or upward movement of the plunger associated with a particular set of grooves, the land 49 obstructs the spill port 23 so that fuel displaced by the plunger flows through the outlet 22 to the associated injection nozzle. Since the edge 47 of the land 49 extends parallel to the axis of rotation of the member 21, what ever the axial position of the member the spill port 23 will always be covered at the same time so that injection of fuel to the associated engine will always start at the same instant.
  • edge 48 of the land 49 is obliquely disposed the termination of injection of fuel and therefore the quantity of fuel which is supplied to the engine, will depend upon the axial position of the member 21 and as has already been explained the axial position of the member 21 depends upon the axial position of the rod 38 and the setting of weights 33 which operate upon the tongue 39. If relative angular movement takes place between the member 34 and the pulley 30 a variation in the start of injection of fuel to the engine will occur.
  • a maximum fuel stop 51 is provided and this co-operates with a flange 52 formed on the end of the rod 38 against which the spring 41 bears.
  • the setting of the stop 51 which is in fact a lever can be determined by adjustment of a screw 53.
  • means not shown is provided to cooperate with the flange 52 to effect movement of the member 21 to its extreme left hand position. In this position the circumferential width of the land 49 is less than that of the spill port 23 so that no fuel will be delivered to the engine.
  • connection between the pulley 30 and the wheel 28 which is mounted on the can shaft 13 of the apparatus is by means of a toothed belt 29.
  • a gear connection can be provided between the cam shaft and the pulley 30 and if desired the gear connection may be arranged to constitute the fuel feed pump 43.
  • a liquid fuel injection pumping apparatus comprising in combination, an injection pump adapted to be driven in timed relationship with an associated engine
  • said injection pump defining a pumping chamber, an outlet from the pumping chamber and which in use is connected to a nozzle mounted in an engine cylinder, a spill port extending from the pumping chamber, a spill valve rotatable in synchronism with the injection pump for controlling the flow of-fuel through the spill port during a pumping stroke of the injection pump, the axial setting of said spill valve determining the quantity of fuel supplied through the outlet and the angular setting of the spill valve relative to the injection pump serving to alter the timing of injection of fuel through said outlet to the engine, a pulley rotatable in synchronism with the injection pump, means restraining the pulley against axial movement, a flange mounted on said pulley and rotatable therewith, a first centrifugal weight pivotally mounted on said flange, a hollow cylindrical member located within a bore formed in the pulley, a helical spline connection between the pulley and said hollow cylindrical member, a rod extending within said hollow cylindrical member,
  • said means connecting said rod to said hollow cylindrical member comprises a lateral plate located within an axial slot formed in the wall of said cylindrical member, said plate being secured to said rod.

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)
US00372494A 1972-07-13 1973-06-21 Liquid fuel injection pumping apparatus Expired - Lifetime US3857374A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3277672A GB1433124A (en) 1972-07-13 1972-07-13 Liquid fuel injection pumping apparatus

Publications (1)

Publication Number Publication Date
US3857374A true US3857374A (en) 1974-12-31

Family

ID=10343834

Family Applications (1)

Application Number Title Priority Date Filing Date
US00372494A Expired - Lifetime US3857374A (en) 1972-07-13 1973-06-21 Liquid fuel injection pumping apparatus

Country Status (4)

Country Link
US (1) US3857374A (US07816562-20101019-C00012.png)
JP (1) JPS5425567B2 (US07816562-20101019-C00012.png)
FR (1) FR2193149B1 (US07816562-20101019-C00012.png)
GB (1) GB1433124A (US07816562-20101019-C00012.png)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552117A (en) * 1984-10-09 1985-11-12 Stanadyne, Inc. Fuel injection pump with spill control mechanism
US4644924A (en) * 1984-10-09 1987-02-24 Stanadyne, Inc. Fuel injection pump with spill control mechanism
US4667641A (en) * 1985-09-23 1987-05-26 Stanadyne, Inc. Injection pump with radially mounted spill control valve
US6447263B1 (en) * 1999-08-27 2002-09-10 Delphi Technologies, Inc. Fuel pump with auxiliary pumping chamber
US6953022B1 (en) * 2000-05-26 2005-10-11 Yanmar Co., Ltd. Fuel injection pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729167A (en) * 1949-03-04 1956-01-03 Daimler Benz Ag Fuel injection pump
US2764964A (en) * 1955-01-26 1956-10-02 Texas Co Fuel injection pump
US3185141A (en) * 1963-01-29 1965-05-25 Simms Motor Units Ltd Variable rate spring devices
US3398729A (en) * 1966-10-31 1968-08-27 Int Harvester Co Diesel distributor valve and governor therefor
US3648673A (en) * 1970-07-06 1972-03-14 Gen Motors Corp Fuel injection pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729167A (en) * 1949-03-04 1956-01-03 Daimler Benz Ag Fuel injection pump
US2764964A (en) * 1955-01-26 1956-10-02 Texas Co Fuel injection pump
US3185141A (en) * 1963-01-29 1965-05-25 Simms Motor Units Ltd Variable rate spring devices
US3398729A (en) * 1966-10-31 1968-08-27 Int Harvester Co Diesel distributor valve and governor therefor
US3648673A (en) * 1970-07-06 1972-03-14 Gen Motors Corp Fuel injection pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552117A (en) * 1984-10-09 1985-11-12 Stanadyne, Inc. Fuel injection pump with spill control mechanism
US4644924A (en) * 1984-10-09 1987-02-24 Stanadyne, Inc. Fuel injection pump with spill control mechanism
US4667641A (en) * 1985-09-23 1987-05-26 Stanadyne, Inc. Injection pump with radially mounted spill control valve
US6447263B1 (en) * 1999-08-27 2002-09-10 Delphi Technologies, Inc. Fuel pump with auxiliary pumping chamber
US6953022B1 (en) * 2000-05-26 2005-10-11 Yanmar Co., Ltd. Fuel injection pump

Also Published As

Publication number Publication date
FR2193149A1 (US07816562-20101019-C00012.png) 1974-02-15
JPS5425567B2 (US07816562-20101019-C00012.png) 1979-08-29
JPS4944125A (US07816562-20101019-C00012.png) 1974-04-25
FR2193149B1 (US07816562-20101019-C00012.png) 1978-09-08
GB1433124A (en) 1976-04-22

Similar Documents

Publication Publication Date Title
US3667437A (en) Multiple plunger fuel injection pump
US3035523A (en) Variable delivery pumps
US4173959A (en) Liquid fuel injection pumps
US3433159A (en) Liquid fuel injection pumps
US3147746A (en) Injection pump adjusting structure
US4050433A (en) Liquid fuel pumping apparatus
US4080109A (en) Fuel injection pumping apparatus
US3447520A (en) Liquid fuel pumping apparatus
US3857374A (en) Liquid fuel injection pumping apparatus
US4470760A (en) Fuel pumping apparatus
US2759422A (en) Fuel injection apparatus
US4299542A (en) Fuel injection pumping apparatus
GB2058947A (en) Fuel pumping apparatus
US5044345A (en) Fuel pumping apparatus
US4050437A (en) Liquid fuel injection pumping apparatus
US3970414A (en) Liquid fuel injection pumping apparatus
US4462370A (en) Fuel injection pumping apparatus
US2949904A (en) Fuel injection pump
US5207202A (en) Fuel pumping apparatus
US5044899A (en) Fuel pumping apparatus
US4751903A (en) Fuel pumping apparatus
US3024779A (en) Timing device for fuel injection pump
US3811799A (en) Liquid fuel pumping apparatus
CA1047339A (en) Liquid fuel injection pumping apparatus for internal combustion engines
US4041920A (en) Fuel injection pumping apparatus