GB835344A - Improvements in self-regulating reciprocating action pumps, and in particular in fuel injection pumps, for internal combustion engines - Google Patents
Improvements in self-regulating reciprocating action pumps, and in particular in fuel injection pumps, for internal combustion enginesInfo
- Publication number
- GB835344A GB835344A GB38394/57A GB3839457A GB835344A GB 835344 A GB835344 A GB 835344A GB 38394/57 A GB38394/57 A GB 38394/57A GB 3839457 A GB3839457 A GB 3839457A GB 835344 A GB835344 A GB 835344A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduit
- valve
- liquid
- piston
- chamber
- 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
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/365—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages valves being actuated by the fluid pressure produced in an auxiliary pump, e.g. pumps with differential pistons; Regulated pressure of supply pump actuating a metering valve, e.g. a sleeve surrounding the pump piston
Abstract
835,344. Fuel injection pumps. BESSIERE, P. E. Dec. 10, 1957 [Dec. 13, 1956], No. 38394/57. Class 102(1). In a reciprocating pump a by-pass conduit is open by a valve member at the commencement of the discharge stroke, the valve being braked in its movement to close this by-pass conduit. A valve 12 is moved by liquid supplied under pressure through conduit 4, passage 17, groove 18 in the pump piston 1, past non-return valve 17a to chamber 13a, against the action of a spring 16 to open the by-pass conduit 11 when the piston 1 is in its lower dead centre position, this liquid also fills the pumping chamber 5 through conduit 3. As the piston 1 moves on its discharge stroke it first closes conduit 17 then conduit 3 and through groove 24 opens the interruption in a relief conduit 23, liquid in the chamber 13a is then free to flow past throttle 20, through conduits 10 and 23 to drain thus allowing the valve 12 to move downwards. When the portion 12a of the valve is about to close the by-pass conduit 11 the chamber 13a is connected to conduit 21 via a passage 22 in the valve portion 12b thus allowing a sudden closing of the by-pass 11 at which time liquid in the chamber 5 passes to the delivery line 7. Since the time of closing of the by-pass 11 is constant for a setting of the throttle 20, as the speed of the piston 2 increases more liquid will be by-passed on each stroke of the piston. In order to ensure a full movement of the valve 12 by the liquid pressure a throttle 25 is inserted in the feed conduit 3 to the pumping chamber. Delivery is ended when a passage 9 in the piston by-passes the liquid through conduit 10. The throttle 25 may be replaced by a passage in the plunger which allows communication between the feed conduit 3 and the pumping chamber 5 before the piston 1 reaches its lower dead centre position, and closes this communication before opening the conduit 17. A separate pump may be used to supply liquid to move the valve 12 and this pump may also feed the liquid to the chamber 5. In this case the second pump is 180 degrees out of phase with the first pump.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1209052T | 1956-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB835344A true GB835344A (en) | 1960-05-18 |
Family
ID=9674601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38394/57A Expired GB835344A (en) | 1956-12-13 | 1957-12-10 | Improvements in self-regulating reciprocating action pumps, and in particular in fuel injection pumps, for internal combustion engines |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1209052A (en) |
| GB (1) | GB835344A (en) |
-
1956
- 1956-12-13 FR FR1209052D patent/FR1209052A/en not_active Expired
-
1957
- 1957-12-10 GB GB38394/57A patent/GB835344A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1209052A (en) | 1960-02-29 |
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