EP0778413A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fuel supply system
Assignee: Delphi Technologies Inc
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Filing: 1996-11-25
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Granted: —
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Expires: 2016-11-25
Abstract
Abstract A fuel supply system for supplying fuel to the cylinders of an associated engine is disclosed. The system comprises a fuel pump (10) for supplying high pressure fuel to a delivery line (106), a plurality of injectors (108) connected to the delivery line (106) and means operable to deliver fuel through the injectors (108) to respective cylinders of an associated engine, and a control valve (112) connected to the delivery line (106) and operable to control the pressure of fuel within the delivery line (106).
Inventors
- 👤 Pierre Bouchhauveau
- 👤 Claude Leveque
- 👤 Dany Guillot
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:08
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/02; F02M59/08; F02M55/00; F02M55/02; F02M55/025; F02M59/04; F02M59/06; F02M59/20; F02M59/34; F02M59/36; F02M59/366; F02M59/44; F02M59/46; F02M59/466; F02M63/00; F02M63/02; F02M63/0225
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
A fuel supply system comprising a fuel pump (10) for supplying high pressure fuel to a delivery line (106), a plurality of injectors (108) connected to the delivery line (106) and means operable to deliver fuel through the injectors to respective cylinders of an associated engine, and a control valve (112) connected to the delivery line (106) and operable to control the pressure of fuel within the delivery line (106)
Claim 2
Dependent Claim
61 words
A fuel supply system as claimed in Claim 1, wherein the control valve (112) comprises a housing (114) defining a bore within which a valve needle (116) is slidable, the valve needle (116) being engageable with a seating to control fuel flow to an outlet, wherein the valve needle (116) is moveable under the control of an electromagnetically actuable valve (128).
Claim 3
Dependent Claim
46 words
A fuel supply system as claimed in Claim 2, wherein the electromagnetically actuable valve (128) is arranged to control the fuel pressure within a control chamber (122), the valve needle (116) of the control valve (112) being influenced by the pressure within the control chamber (122).
Claim 4
Dependent Claim
31 words
A fuel supply system as claimed in any one of the preceding claims, further comprising a fuel control arrangement (12) for controlling the supply of fuel to the fuel pump (10).
Claim 5
Dependent Claim
86 words
A fuel supply system as claimed in any one of the preceding claim, wherein the fuel pump (10) comprises a pump body (14) provided with a radially extending bore (16), a pumping plunger (18) being reciprocable within the bore (16) under the action of the cam surface of a cam ring (24) which is rotatable relative to the pump body (14), the bore (16) communicating through an inlet valve (58) with a source of fuel, and through an outlet valve (90) with the delivery line (106).
Claim 6
Dependent Claim
30 words
A fuel supply system a claimed in Claim 5, wherein the inlet and outlet valves (58, 90) are provided in respective radially extending drillings provided in the pump body (14).
Claim 7
Dependent Claim
45 words
A fuel supply system as claimed in any one of the preceding claims, wherein the fuel pump (10) is arranged to supply a relatively high number of pulses of fuel at high pressure to the delivery line (106) per operating cycle of the pump (10).
Claim 8
Dependent Claim
40 words
A fuel supply system as claimed in Claim 7, wherein during the time between the commencement of a first injection and the commencement of the next injection, at least three pulses of fuel are supplied to the delivery line (106).
Claim 9
Dependent Claim
28 words
A fuel supply system as claimed in Claim 8, wherein one of the pulses is supplied to the delivery line (106) at the commencement of the first injection.
References Cited (Backward Citations)
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