GB677120A - Improvements in variable delivery piston pumps - Google Patents
Improvements in variable delivery piston pumpsInfo
- Publication number
- GB677120A GB677120A GB26357/50A GB2635750A GB677120A GB 677120 A GB677120 A GB 677120A GB 26357/50 A GB26357/50 A GB 26357/50A GB 2635750 A GB2635750 A GB 2635750A GB 677120 A GB677120 A GB 677120A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stroke
- abutment
- plunger
- fuel
- valve
- 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
Links
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
- F02M59/30—Varying fuel delivery in quantity or timing with variable-length-stroke pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/06—Control
-
- 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
- F02M2700/1376—Fuel pump with control of the pump piston stroke
Abstract
677,120. Fuel injection pumps. BOSCH GES., R. Oct. 30, 1950 [Oct. 31, 1949], No. 26357/50. Class 102 (i) A reciprocating pump, particularly for fuel injection purposes, has a variable stroke plunger 20 actuated by a con stant stroke tappet 30 the latter having an abutment 28 which, after a free movement, engages the end 29 of the plunger to effect the injection stroke and a second abutment 25 which, after a free movement, engages an abutment 24 on the plunger to effect the suction stroke, the two abutments 24, 25 being relatively adjustable for varying the said free movement and hence varying the plunger stroke. The tappet is actuated by a cam 35 against a return spring 32 and its abutment 25 which may be of any shock absorbing material, has a helical surface co-operating with a helical surface 23 on the abutment 24 which is rotatable with the plunger through a rack 15 and bush 16. The abutment 25 may be replaced by a pin projecting inwardly from a wall 27. Fuel enters the pump chamber 55 through an inlet 13 and inlet valve 40 which is guided in a bore 41 and is retained therein by an eccentric disc 47 engaging in an annular groove 46 in the valve bore so that the valve may be easily removable. Injection is terminated when a byepass valve 50, Fig. 2, is opened by the wall 27 at the end of the stroke or alternatively the inlet valve may be opened in a similar manner. The quantity of fuel byepassed varies with the speed and this fuel may act on a spring-loaded piston connected to the rack for varying the stroke automatically with the speed. The end of the return stroke is cushioned by a spring 22. Lubricant is supplied to annular grooves 56, 57 through a port 14. A further annular groove 58 connected to the valve bore 41 by a transverse passage 59 prevents leakage fuel from entering the lubricant grooves. A plurality of parallel plungers may be disposed in a casing and controlled by a common rack. In another embodiment the abutment 25 of the tappet is rotated by the rack through a sleeve which is slidable over the plunger.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE677120X | 1949-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB677120A true GB677120A (en) | 1952-08-06 |
Family
ID=6594050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26357/50A Expired GB677120A (en) | 1949-10-31 | 1950-10-30 | Improvements in variable delivery piston pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB677120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3026879A1 (en) * | 1980-07-16 | 1982-02-04 | Cillichemie Ernst Vogelmann Gmbh & Co, 7100 Heilbronn | MAGNETIC DOSING PUMP |
-
1950
- 1950-10-30 GB GB26357/50A patent/GB677120A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3026879A1 (en) * | 1980-07-16 | 1982-02-04 | Cillichemie Ernst Vogelmann Gmbh & Co, 7100 Heilbronn | MAGNETIC DOSING PUMP |
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