US2325524A - Fuel injection pump - Google Patents
Fuel injection pump Download PDFInfo
- Publication number
- US2325524A US2325524A US396994A US39699441A US2325524A US 2325524 A US2325524 A US 2325524A US 396994 A US396994 A US 396994A US 39699441 A US39699441 A US 39699441A US 2325524 A US2325524 A US 2325524A
- Authority
- US
- United States
- Prior art keywords
- sleeve
- pump
- springs
- piston
- fuel injection
- 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
- 239000000446 fuel Substances 0.000 title description 4
- 238000002347 injection Methods 0.000 title description 4
- 239000007924 injection Substances 0.000 title description 4
- 239000012530 fluid Substances 0.000 description 6
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
-
- 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
- F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
- F02M59/243—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movement of cylinders relative to their pistons
-
- 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
- F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
- F02M2700/13—Special devices for making an explosive mixture; Fuel pumps
- F02M2700/1317—Fuel pumpo for internal combustion engines
- F02M2700/1382—Fuel pump with control of the cylinder relative to non-rotary piston
Definitions
- a simple and effective locking of the piston sleeve of injection pumps of the kind mentioned above against independent turning on the tappet is provided by causing the piston sleeve rotatably mounted in the pump casing to be pressed against the pump casing by the casing of the discharge valve with a pressure increased by spring action.
- the springs producing the additional pressure are arranged in bores which for the purpose of adjusting the piston sleeve are provided in th surface of this sleeve facing the casing of the discharge valve.
- Two or more bores 4 are provided at the face 3 of the piston sleeve I facing the casing 2 of the discharge valve. By employment of a suitable tool, these bores may be used to individually adjust the sleeve I.
- coiled springs 5 are mounted which bear against the face 6 of the valve casing 2. After adjusting the piston sleeve I, the valve casing 2 may be pressed against the piston sleeve I by means of a cap nut, not shown in the drawing.
- the length-of the springs 5 is such that these springs are compressed by a height h when the valve casing 2 is pressed against them.
- the height of compression of the springs corresponds to the additionalpressure with which the piston sleeve l is to be pressed, by means of its shoulder I, against the pump casing 8.
- 9 designates the charging bore for the fuel, III an overflow bore, I I the pump casing, and I2 the cam for actuating the piston loaded by the'spring I3.
- a pump housing enclosing a pump chamber, a hollow sleeve in said pump chamber, rotatably mounted in said housing and provided with one or more radial openings leading to the interior of said pump chamber, and a pump piston reciprocal within said sleeve, having a circumferentially variable controlling groove cooperating with at least one of said openings to control the flow of fluid to the interior of said pump chamber, whereby rotation of said sleeve in said housing will vary the relative position of said opening and controlling groove to vary the fluid flow to said pump chamber, one end of said sleeve being provided with a plurality of depressions adapted to-receive a tool for rotatably adjusting said sleeve, and means cooperating with said de pressed end of the sleeve to lock it against further rotation.
- said depressions are formed as spring seats, in combination with springs in said seats, and a delivery valve casing movable in said housing in the direction of said sleeve, whose lower face is adapted to contact said springs, whereby when said delivery valve casing is pressed toward sleeve and held in contact with the end of the sleeve. said springs are compressed and serve as a lock to prevent rotation of said sleeve.
- a pump housing enclosing a pump chamber provided with an internal annular shoulder, a hollow sleeve rotatable in said pump chamber having an annular abutment contacting said shoulder, said sleeve being provided with one or more openings leading to the interior of said pump chamber, a pump piston reciprocal within said sleeve, having a circumferentially variable controlling groove cooperating with at least one of said openings to control the flow of fluid to the interior of said pump chamber, whereby rotation of said sleeve in said housing will vary the relative position of said opening and controlling groove to vary the control of fluid to said pump chamber, and removable spring means for pressing the abutment on said sleeve against said shoulder to prevent relative rotation between said sleeve and pump housing.
Description
July 27, 1943. H. m
FUEL INJECTION PUMP Filed June 7, 1941 Patented July 27, 1943 UNITED STATES PATENT OFFICE FUEL INJECTION PUMP Application June'7, 1941, Serial No. 396,994 In Germany April 16, 1940 Claims.
Now, according to this invention a simple and effective locking of the piston sleeve of injection pumps of the kind mentioned above against independent turning on the tappet is provided by causing the piston sleeve rotatably mounted in the pump casing to be pressed against the pump casing by the casing of the discharge valve with a pressure increased by spring action. In a par-- ticularly advantageous form, the springs producing the additional pressure are arranged in bores which for the purpose of adjusting the piston sleeve are provided in th surface of this sleeve facing the casing of the discharge valve.
It is also possible to use a single unit with one piston.-
In the accompanying drawing the preferred construction embodying the invention is shown by way of example.
Two or more bores 4 are provided at the face 3 of the piston sleeve I facing the casing 2 of the discharge valve. By employment of a suitable tool, these bores may be used to individually adjust the sleeve I. In the bores 4 coiled springs 5 are mounted which bear against the face 6 of the valve casing 2. After adjusting the piston sleeve I, the valve casing 2 may be pressed against the piston sleeve I by means of a cap nut, not shown in the drawing. The length-of the springs 5 is such that these springs are compressed by a height h when the valve casing 2 is pressed against them. The height of compression of the springs corresponds to the additionalpressure with which the piston sleeve l is to be pressed, by means of its shoulder I, against the pump casing 8. 9 designates the charging bore for the fuel, III an overflow bore, I I the pump casing, and I2 the cam for actuating the piston loaded by the'spring I3.
In this manner the pressure of the piston sleeve isso increased that the friction at the smooth faces 3, 6 is no longer suflicient to drive the piston sleeve I by friction when the valve case 2 is turned. Once the cap nut has been tightened, turning of the sleeve I is impossible.
Having now particularly described and ascertained the natur of my said invention and in what manner the same is to be performed I declare that what I claim is:
1. In a fluid pump, a pump housing enclosing a pump chamber, a hollow sleeve in said pump chamber, rotatably mounted in said housing and provided with one or more radial openings leading to the interior of said pump chamber, and a pump piston reciprocal within said sleeve, having a circumferentially variable controlling groove cooperating with at least one of said openings to control the flow of fluid to the interior of said pump chamber, whereby rotation of said sleeve in said housing will vary the relative position of said opening and controlling groove to vary the fluid flow to said pump chamber, one end of said sleeve being provided with a plurality of depressions adapted to-receive a tool for rotatably adjusting said sleeve, and means cooperating with said de pressed end of the sleeve to lock it against further rotation.
2. The combination according to claim 1, in which said depressions are formed as spring seats, in combination with springs in said seats, and a delivery valve casing movable in said housing in the direction of said sleeve, whose lower face is adapted to contact said springs, whereby when said delivery valve casing is pressed toward sleeve and held in contact with the end of the sleeve. said springs are compressed and serve as a lock to prevent rotation of said sleeve.
3. In a fluid pump, a pump housing enclosing a pump chamber provided with an internal annular shoulder, a hollow sleeve rotatable in said pump chamber having an annular abutment contacting said shoulder, said sleeve being provided with one or more openings leading to the interior of said pump chamber, a pump piston reciprocal within said sleeve, having a circumferentially variable controlling groove cooperating with at least one of said openings to control the flow of fluid to the interior of said pump chamber, whereby rotation of said sleeve in said housing will vary the relative position of said opening and controlling groove to vary the control of fluid to said pump chamber, and removable spring means for pressing the abutment on said sleeve against said shoulder to prevent relative rotation between said sleeve and pump housing.
4. The combination according to claim 3, in which said sleeve is provided with depressed spring seats in one end, and in which said spring means include springs in said seats, and means for pressing saidsprings into said seats.
5. The combination according to claim 3, in which said sleeve is provided with depressed springs in oneend, and in which said spring means include springs in said seats, and a delivery valve casing movable in said pump housing toward and away from the end of said sleeve for pressing said spring into said seats.
HEINZ LINKS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2325524X | 1940-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2325524A true US2325524A (en) | 1943-07-27 |
Family
ID=7994764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US396994A Expired - Lifetime US2325524A (en) | 1940-04-16 | 1941-06-07 | Fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2325524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3609070A (en) * | 1968-09-24 | 1971-09-28 | Cav Ltd | Fuel injection pumps |
-
1941
- 1941-06-07 US US396994A patent/US2325524A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3609070A (en) * | 1968-09-24 | 1971-09-28 | Cav Ltd | Fuel injection pumps |
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