EP0055117A2
Expired / Lapsed
EP
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Fuel injection pump
Assignee: Ford-Werke GmbH
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Filing: 1981-12-21
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Granted: —
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Expires: 2001-12-21
Abstract
Abstract A fuel injection pump has a single plunger (26, 112) either electromagnetically or hydraulically actuated for flow of fuel into a fuel distribution chamber (38,127) from which the fuel is distributed individually to each engine cylinder past a series of solenoid (68, 162) controlled outlet valves (60,200) actuated one at a time in sequence with the engine firing order.
Inventors
- 👤 Michael Moses Schechter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 18:01
CPC Classifications
F; F02; F02M; F02M51/00; F02M51/04; F02D; F02D41/00; F02D41/30; F02D41/38; F02D41/40; F02M41/00; F02M41/02; F02M59/00; F02M59/02; F02M59/10; F02M59/105; F02M63/00; F02M63/0003; F02M63/0007; F02M2200/00; F02M2200/24; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
83 words
A fuel injection pump including a housing having a main fuel passage, a fuel inlet passage for supplying fuel to the main fuel passage, a plunger reciprocable in the housing to pressurise the fuel in the main fuel passage, a plurality of outlet passages each connected to the main fuel passage and each communicating with a respective fuel outlet from the housing and selectively operable solenoid controlled fuel outlet valves in each of the outlet lines for opening and closing the outlet passages.
Claim 2
Dependent Claim
83 words
A fuel injection pump including a housing having a main fuel passage, a fuel inlet passage for supplying fuel to the main fuel passage, a plunger reciprocable in the housing to pressurise the fuel in the main fuel passage, a plurality of outlet passages each connected to the main fuel passage and each communicating with a respective fuel outlet from the housing and selectively operable solenoid controlled fuel outlet valves in each of the outlet lines for opening and closing the outlet passages.
Claim 3
Dependent Claim
24 words
A pump according to claim 1, wherein further comprising a main solenoid for actuating the plunger to pressurise the fuel in the main passage.
Claim 4
Dependent Claim
26 words
A pump according to claim 1, further comprising actuating means operable by fluid pressure for actuating the plunger to pressurise the fuel in the main passage.
Claim 5
Dependent Claim
15 words
A pump according to claim 3, wherein the actuating means is operable by engine fuel.
Claim 6
Dependent Claim
29 words
A pump according to any one of claims 1 to 4 wherein the fuel outlet valves are arranged in the housing around the axis of reciprocation of the plunger.
Claim 7
Dependent Claim
47 words
A pump according to any one of claims 1 to 5 wherein the fuel inlet passage includes a delivery control valve for preventing fuel from flowing from the main passare to the fuel outlet passages when the pressure in the main passage is below a predetermined level.
Claim 8
Dependent Claim
32 words
A pump according to claim 5, wherein the delivery control valve comprises a retraction valve for retracting a predetermined volume of fuel from the fuel outlet passage as the retraction valve closes.
Claim 9
Dependent Claim
27 words
R, A pump according to any one of claims 1 to 7 wherein the main passage and the fuel outlet passages communicate with a fuel distribution chamber.
Claim 10
Dependent Claim
22 words
A pump according to any one of Claims 1 to 8 further comprising control means for varying the stroke of the plunger.
Claim 11
Dependent Claim
64 words
A pump according to claim 9 wherein the plunger is actuated by a main solenoid to pressurise fuel in the main passage, and the control means includes means for varying the voltage impulses to the main solenoid as a function of varying engine operating conditions to vary the duration and magnitude of pumping of fuel by the plunger in accordance with a predetermined schedule.
Claim 12
Dependent Claim
64 words
A pump according to claim 9 wherein the plunger is actuated by fluid pressure to pressurise fuel in the main passage, and the control means includes means for applying and venting fluid pressure to and from the plunger and for varying the duration and magnitude of the fluid pressure level to control the pumping stroke of the plunger in accordance with a predetermined schedule.
Claim 13
Dependent Claim
34 words
A pump according to any one of claims 9 to 11 wherein control means also energises the solenoid-controlled fuel outlet valves in sequence, a different outlet valve upon each successive actuation of the plunger.
Claim 14
Dependent Claim
23 words
A pump according to any one of claims 1 to 12 further comprising adjustable stop means for limiting the stroke of the plunger.
Claim 15
Dependent Claim
59 words
A pump according to claim 13, as dependent upon any one of claims 9 to 12 further comprising a position sensor for sensing the position of the plunger and generating an electrical feedback signal, and the control means is operable in response to the feedback signal to control the stroke of the plunger in accordance with a predetermined schedule.
References Cited (Backward Citations)
No citation records indexed.
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