GB778127A - Improvements in or relating to fuel injection pumps - Google Patents
Improvements in or relating to fuel injection pumpsInfo
- Publication number
- GB778127A GB778127A GB35343/55A GB3534355A GB778127A GB 778127 A GB778127 A GB 778127A GB 35343/55 A GB35343/55 A GB 35343/55A GB 3534355 A GB3534355 A GB 3534355A GB 778127 A GB778127 A GB 778127A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- injection
- spring
- piston
- fuel
- 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
-
- 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
- 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
Abstract
778,127. Starting direct injection engines. BOSCH GES., R. Dec. 9, 1955 [Dec. 11, 1954], No. 35343/55. Class 7 (3). [Also in Group XXVIII] In a fuel injection pump in which a pump member is adapted to be driven with a compound motion having both axially and rotary reciprocatory components one end section 3 forms an injection pump piston and the opposite end section 4 a fuel supply pump, the inlet and outlet of both the injection and supply pump being controlled by the rotary oscillatory motion of the piston. Fuel is drawn by the supply pump from an inlet 64 and is forced into a passage 41 and through an adjustable throttle 50 to the inlet of the fuel injection pump which forces fuel through a spring loaded valve 15 to the outlet connection 16. The end of the fuel injection pump cylinder is closed by a piston 7 loaded by a spring 10. Fuel also passes from the passage 41 through a throttle valve 42 loaded by a spring 43 to a chamber 22 and passes through a spring loaded ball valve 24 and a throttle passage 34 to an outlet 36. The piston 7 is subjected to pressure in the chamber 20. On starting the engine fuel supply pressure is sufficient only to lift the valve 24 against the force of its spring 28 hence the pressure in the chamber 20 is controlled by the spring 28. Injection pressure at starting is insufficient to overcome the pressure in the chamber 20 acting on the piston 7 together with the spring pressure and hence injection commences immediately the inlet is closed and continues until the spill port 61 communicates with the pasage 41. The pressure in the passage 41 may however be sufficiently high that injection takes place throughout the full stroke of the piston. As the engine speeds up the fuel supply pressure increases and this pressure acting on a sleeve 26. forces it to the right until grooves 33 communicate with the passage 36, the valve 24 is then relieved of spring pressure. In this condition the initial stroke of the injection plunger forces the piston 7 upwards until it contacts a stop 17 thereafter injection takes place until the spill port 61 is opened.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB778127 | 1955-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB778127A true GB778127A (en) | 1957-07-03 |
Family
ID=6686906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35343/55A Expired GB778127A (en) | 1955-12-09 | 1955-12-09 | Improvements in or relating to fuel injection pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB778127A (en) |
-
1955
- 1955-12-09 GB GB35343/55A patent/GB778127A/en not_active Expired
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