Invention Grant
- Patent Title: Fuel injection system
- Patent Title (中): 燃油喷射系统
-
Application No.: US12315075Application Date: 2008-11-26
-
Publication No.: US08011349B2Publication Date: 2011-09-06
- Inventor: George Nicholas Felton
- Applicant: George Nicholas Felton
- Applicant Address: US MI Troy
- Assignee: Delphi Technologies Holdings S.arl
- Current Assignee: Delphi Technologies Holdings S.arl
- Current Assignee Address: US MI Troy
- Agent Thomas N. Twomey
- Priority: EP07254582 20071126
- Main IPC: F02M37/00
- IPC: F02M37/00

Abstract:
A fuel injection system for an internal combustion engine comprises a plurality of pumps arranged to supply respective flows of pressurized fuel to a common accumulator volume that supplies the pressurized fuel in turn to a plurality of fuel injectors. An engine control unit controls the flow rate of pressurized fuel into the accumulator volume in response to engine load. The flow rate of pressurized fuel from at least one pump of the plurality is dependent upon engine speed; whereas at least one other pump of the plurality comprises a fuel output control responsive to the engine control unit enabling the flow rate of pressurized fuel from that pump to be varied independently of engine speed. In this way, the engine control unit controls the aggregate flow rate of pressurized fuel from the pumps into the accumulator volume, while controlling only one of the pumps. This reduces the cost of control apparatus and allows greater freedom of pump selection and flow circuit design.
Public/Granted literature
- US20090138179A1 Fuel injection system Public/Granted day:2009-05-28
Information query