US3330265A - Fuel injection pumps for internal combustion engines - Google Patents
Fuel injection pumps for internal combustion engines Download PDFInfo
- Publication number
- US3330265A US3330265A US414643A US41464364A US3330265A US 3330265 A US3330265 A US 3330265A US 414643 A US414643 A US 414643A US 41464364 A US41464364 A US 41464364A US 3330265 A US3330265 A US 3330265A
- Authority
- US
- United States
- Prior art keywords
- shaft
- fuel
- distributing valve
- pump
- casing
- 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
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
-
- 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
- F02M41/02—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements
- F02M41/06—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating
- F02M41/063—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating the distributor and rotary valve controlling fuel passages to pumping elements being combined
-
- 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
- F02M41/02—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements
- F02M41/06—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating
- F02M41/063—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor being spaced from pumping elements the distributor rotating the distributor and rotary valve controlling fuel passages to pumping elements being combined
- F02M41/066—Arrangements for adjusting the rotary valve-distributor
Definitions
- the present invention relates to internal combustion engine fuel injection pumps which comprises, in combination, a fixed body, a rotating distributing valve driven in rotation about its axis in said fixed body by a shaft coaxal therewith, said shaft being itself driven by the internal combustion engine fed with fuel by the pump (said distributing valve being possible slidable longitudinally for regulation purposes), at least one pump piston slida'ble in a transverse cylindrical housing provided in one of the two elements consisting of the fixed body and the rotating valve, under the action of an annular cam driven in rotation by the other of said two elements, the fixed body being provided with delivery conduits Which lead to the engine feed injectors and which cooperate with distributing passages provided in the rotating valve and adapted to communicate with said transverse cylindrical housing, the whole being housed in a closed casing through which said shaft extends.
- the invention is more especially concerned with the case where the transverse cylindrical housing for the piston is provided in the fixed body and the annular cam is driven in rotation together with the distributing valve.
- the chief object of the present invention is to provide a pump of this kind which is better adapted to meet the requirements of practice, in particular concerning lubrication of the pump.
- the fuel circulation system is made separate from the remainder of the inside of the casing, preferably by disposing the portion of the distributing valve which includes the distributing passages and opposite which opens said transverse cylindrical housing in a continuous longitudinal bore provided in the above mentioned body and including two annular end grooves capable of collecting possible leaks of the fuel between the rotating distributing valve and the wall of said longitudinal bore, and means are provided for maintaining a lubricant in said remainder of the inside of the casing, for lubricating the movable parts therein, said last mentioned means advantageously comprising a lubricant circulation pump coupled with a primary fuel feed pump made fluidtight with respect to the remainder of the casing.
- the casing is provided with an orifice fitted with a removable connection serving to the inflow of fuel and said orifice is arranged in such manner that, after removal of said connection, it is possible to introduce thereinto a rod extending in a given direction so as to come into contact with the annular cam, said cam being provided with a notch adapted to accommodate said rod, whereby, after the engine shaft has been brought into a given position, it is possible to connect said shaft with the shaft of the pump with the proper angular setting.
- FIG. 1 is an axial sectional view of a fuel injection pump made according to the present invention
- FIG. 2 is a cross sectional view on the line II-II of FIG. 1;
- FIG. 3 is a partial axial sectional view in a different from the section plane of FIG. 1;
- FIG. 4 is a view similar to a portion of FIG. 1 and relative to a modification
- FIG. 5 is an axial sectional view cam of FIG. 4 is controlled.
- FIG. 6 is a sectional view on the line VIVI of FIG. 5.
- the fuel injection pump illustrated by the drawings comprises a fixed body 1, preferably made of two coaxial pieces 10 and 1b, and a distributing valve 2 rotating in a cylindrical bore 3 provided in body 1, said valve 2 being driven in rotation by a shaft 4 itself driven by the internal combustion engine (not shown by the drawings) fed with fuel by the pump.
- Two opposed pump pistons 5, only one of which is visible (FIG. 3), are slidable, in respective cylinders 6 substantially perpendicular to the common axis of distributing valve 2 and shaft 4, under the action of an annular cam 7 including as many inward projections as the internal combustion engine comprises cylinders to be fed successively with fuel.
- Cylinders 6 are placed in communication with the injectors of the internal combustion engine, respectively, through conduits 8 provided in fixed body 1, with the interposition of connections 9 provided with check valves 10 illustrating how the Annular cam 7, carried by a disc-shaped portion 4a integral with driving shaft 4, gives pistons 5 their reciprocating radial movements in cylinders 6 through rollers 11 and push-pieces 12 against the action of return springs 13.
- Cam 7 is mounted rotatable, through a bearing 14, in a casing 15 through the end of which shaft 4 extends with the interposition of packing means 16.
- a feed pump 17 the suction of which communicates with an inlet connection 18.
- the delivery of this pump 17 communicates through a pipe 19 with a connection 20 opening into the inlet 21 of the fuel injec tion pump.
- Connection 20 is in permanent communication, through an annular groove 22 provided in body element 1b, with equidistant radial holes 23 the number of which is equal to the number of cylinders of the internal combustion engine to be fed with fuel by the pump.
- These radial holes open into bore 3 opposite a longitudinal groove 24 provided in rotating distributing valve 2.
- This longitudinal groove 24 opens into a peripheral annular groove 25 provide in distributing valve 2 and in perma net communication with pump cylinders 6.
- the delivery circuit from said pump cylinders 6 comprises a second longitudinal groove 26 starting from annular groove 25 and leading to delivery passages 8.
- fuel injection begins when a hole 23 ceases to be in communication with longitudinal groove 26 and that it is cut off just when the next hole 23 is placed in communication with longitudinal groove 24.
- Variation of the angular position of said rotating distributing valve 2 with respect to shaft 4 offsets in the cycle of operation the period for which no radial hole 23 communicates with both of the two grooves 24 and 26 of distributing valve 2, that is to say varies the advance to injection, whereas variation of the longitudinal position of distributing valve 2 varies the flow rate of the pump per revolution if said grooves 24 and 26 are provided with inclined portions 24a and 26a oblique to the axis of distributing valve 2 and located opposite radial holes 23.
- a regulating device capable of exerting an axial force variable in the same manner as the speed of rotation of shaft 4 upon a member 27 capable of sliding without rotating with respect to shaft 4, against the action of a spring 28, owing to the clined portion 24a, the next hole 23.
- the regulatingdevice comprises two masses 3% ⁇ pivoted about two respective axes 31 journalled in a flange 32 of shaft 4, each of said masses 30 being capable of longitudinally displacing a push-piece 33 capable of exerting an axial thrust, against the action of spring 28, upon member 27, which serves to control distributing valve 2.
- the return means consists of a set of springs 24 the end of which opposed to that connected to distributing valve 2 bears upon a cup-shaped member 35 movable in response to the movements of the throttle Valve of the internal combustion engine, for instance by the provision of a forked lever 36 fixed on the spindle 37 of said throttle valve.
- this set of springs it acts upon said distributing valve 2 not directly but through a resilient plate 38 carried by a lever 39 pivoted about an axis 40 and interposed between distributing valve 2and the set of springs 34.
- One of the objects of the invention is to permit of using such pump with any liquid fuel whatever.
- the fuel circuit is separated from the remainder of the inside of casing and means are provided for maintaining a lubricant in said remainder of the inside of casing 15.
- the bore 3 in which said distributing valve portion is disposed is arranged in such manner as to be continuous inside the pump body (that is to say without direct communication with casing 15) and to comprise two annular end grooves 4 V 41 adapted to collect any possible leaks of fuel at high pressure between distributing valve 2 and the wall of said bore 3.
- Grooves 41 may be connected through passages 42 with holes 23 and/or with annular groove 22.
- said means may include a pump 43 intended to circulate lubricating oil and coupled with primary pump 17.
- This pump 43 may be of the same type as said primary pump'17 and anyway it is separated therefrom by packing joints 44.
- the suction of pump 43 is connected to an oil inlet connection 45 in communication with a tank (not shown) and said pump 43 delivers oil into casing 15 through aport 46.
- a discharge valve 47 maintains a given oil pressure inside the casing, the excess of oil allowed to pass out by this valve returning to said tank.
- centrifugal governor including masses 30, connecting means, such as 27, 29 and 33 between this regulating device and distributing valve 2, springs 34 and connecting means between said springs and distributing valve 2, lever 30 and the like. It is therefore possible to use the pump with non-lubricating fuels.
- orifice 21 is located in such manner that, after removal of connection 20, it is possible to insert a rod 50 (FIG. 5) so that it comes into contact with cam 7, said cam being prgvided with a notch 51 adapted to accommodate said ro
- orifice 21 advantageously opens opposite a conduit 52 provided in the external portion 112 of body 1 and communicating with groove 22. It then suffices to provide, opposite orifice-21 on the outside of conduit 52, a passage 53 extending through the portion 117 of body 1, this passage 53 having a diameter equal to that of rod 50 and being capable of giving the latter-the above mentioned direction. In normal and 6) first into passage 53, then into notch 51 after ro-.
- a fuel injection system which comprises, in com-. bination, a
- a closed casing including two portions, a first one and a second one, a fixed body in the first portion of said casing,
- a driving shaft journalled in said body about an axis with at least one cylindrical housing transverse to said axis
- said body being provided with a cylindrical bore coaxial with said shaft
- said body being provided on the one hand with intake conduits each opening at one end into said bore and communicating at the other end with said fuel feed conduit and on the other hand with delivery conduits each opening at one end into said bore and communicating at the other end with one of said fuel injection connections, respectively,
- said distributing valve being provided with fuel distributing passage means for placing, during every revolution of said shaft, said pumping chamber in communication with said delivery conduits, successively and cyclically, for respective time intervals and for placing said pumping chamber in communication with said intake conduits during time intervals occurring between said first mentioned time intervals,
- said body being provided with a orifice for the inflow of fuel thereinto and with a passage extending from said orifice to a point located opposite said cam, and
- said cab being provided with a notch located opposite said passage
- a rod can be introduced through said passage and inserted in said notch for positioning said driving shaft with respect to said rotating distributing valve.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR956059A FR1385592A (fr) | 1963-12-04 | 1963-12-04 | Perfectionnements apportés aux pompes d'injection de combustible |
Publications (1)
Publication Number | Publication Date |
---|---|
US3330265A true US3330265A (en) | 1967-07-11 |
Family
ID=8818121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US414643A Expired - Lifetime US3330265A (en) | 1963-12-04 | 1964-11-30 | Fuel injection pumps for internal combustion engines |
Country Status (8)
Country | Link |
---|---|
US (1) | US3330265A (fr) |
BE (1) | BE655806A (fr) |
CH (2) | CH418729A (fr) |
DE (1) | DE1285251B (fr) |
ES (1) | ES306697A1 (fr) |
FR (1) | FR1385592A (fr) |
GB (2) | GB1088822A (fr) |
OA (1) | OA00626A (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3460479A (en) * | 1966-03-14 | 1969-08-12 | Cav Ltd | Liquid fuel pumping apparatus |
US3871794A (en) * | 1972-06-19 | 1975-03-18 | Sigma | Correction device for the delivery per revolution of a distributing injection pump and pump equipped with this device |
US3895886A (en) * | 1972-05-08 | 1975-07-22 | Gen Mecanique Applique S I G M | Device for correcting the delivery of a distributing injection pump and pump equipped therewith |
US4067303A (en) * | 1974-12-19 | 1978-01-10 | Diesel Kiki Co., Ltd. | Fuel injection pump governor |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3011831A1 (de) * | 1980-03-27 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzpumpe fuer brennkraftmaschinen |
DE3124500A1 (de) * | 1981-06-23 | 1983-01-13 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzpumpe |
JPH0814133A (ja) * | 1994-06-30 | 1996-01-16 | Toyota Motor Corp | 燃料噴射ポンプ |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2053027A (en) * | 1934-10-30 | 1936-09-01 | Franks Ernest Arthur | Pump |
US2410947A (en) * | 1943-04-19 | 1946-11-12 | Caterpillar Tractor Co | Fuel injection pum mechanism |
US2518473A (en) * | 1949-02-19 | 1950-08-15 | American Bosch Corp | Fuel injection pump |
US2779289A (en) * | 1952-05-06 | 1957-01-29 | Bosch Arma Corp | Fuel injection apparatus for v type engines |
US2794397A (en) * | 1952-04-19 | 1957-06-04 | Bosch Arma Corp | Fuel injection pump |
US2968298A (en) * | 1959-01-12 | 1961-01-17 | Meuer Siegfried | Internal combustion engine |
US3091231A (en) * | 1959-03-12 | 1963-05-28 | Sigma | Fuel injection pumps |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR862981A (fr) * | 1940-01-19 | 1941-03-20 | Lavalette Ateliers Constr | Pompe d'injection pour moteur à combustion interne |
GB850556A (en) * | 1958-06-05 | 1960-10-05 | Cav Ltd | Liquid fuel injection pumps for internal combustion engines |
-
1963
- 1963-12-04 FR FR956059A patent/FR1385592A/fr not_active Expired
-
1964
- 1964-11-16 BE BE655806D patent/BE655806A/xx unknown
- 1964-11-17 CH CH1484764A patent/CH418729A/fr unknown
- 1964-11-17 CH CH1484664A patent/CH416216A/fr unknown
- 1964-11-18 DE DES94237A patent/DE1285251B/de active Pending
- 1964-11-30 US US414643A patent/US3330265A/en not_active Expired - Lifetime
- 1964-12-02 OA OA50716A patent/OA00626A/fr unknown
- 1964-12-03 ES ES0306697A patent/ES306697A1/es not_active Expired
- 1964-12-03 GB GB49234/64A patent/GB1088822A/en not_active Expired
- 1964-12-03 GB GB49233/64A patent/GB1095757A/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2053027A (en) * | 1934-10-30 | 1936-09-01 | Franks Ernest Arthur | Pump |
US2410947A (en) * | 1943-04-19 | 1946-11-12 | Caterpillar Tractor Co | Fuel injection pum mechanism |
US2518473A (en) * | 1949-02-19 | 1950-08-15 | American Bosch Corp | Fuel injection pump |
US2794397A (en) * | 1952-04-19 | 1957-06-04 | Bosch Arma Corp | Fuel injection pump |
US2779289A (en) * | 1952-05-06 | 1957-01-29 | Bosch Arma Corp | Fuel injection apparatus for v type engines |
US2968298A (en) * | 1959-01-12 | 1961-01-17 | Meuer Siegfried | Internal combustion engine |
US3091231A (en) * | 1959-03-12 | 1963-05-28 | Sigma | Fuel injection pumps |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3460479A (en) * | 1966-03-14 | 1969-08-12 | Cav Ltd | Liquid fuel pumping apparatus |
US3895886A (en) * | 1972-05-08 | 1975-07-22 | Gen Mecanique Applique S I G M | Device for correcting the delivery of a distributing injection pump and pump equipped therewith |
US3871794A (en) * | 1972-06-19 | 1975-03-18 | Sigma | Correction device for the delivery per revolution of a distributing injection pump and pump equipped with this device |
US4067303A (en) * | 1974-12-19 | 1978-01-10 | Diesel Kiki Co., Ltd. | Fuel injection pump governor |
Also Published As
Publication number | Publication date |
---|---|
BE655806A (fr) | 1965-03-16 |
CH418729A (fr) | 1966-08-15 |
DE1285251B (de) | 1968-12-12 |
CH416216A (fr) | 1966-06-30 |
GB1088822A (en) | 1967-10-25 |
ES306697A1 (es) | 1965-02-16 |
GB1095757A (en) | 1967-12-20 |
OA00626A (fr) | 1966-07-15 |
FR1385592A (fr) | 1965-01-15 |
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