Invention Grant
- Patent Title: Efficient wave form to control fuel system
- Patent Title (中): 高效波形控制燃油系统
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Application No.: US12884798Application Date: 2010-09-17
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Publication No.: US08214132B2Publication Date: 2012-07-03
- Inventor: Nadeem Bunni , Daniel R. Puckett , Jay Venkataraghavan , Stephen R. Lewis , Angela L. Moore
- Applicant: Nadeem Bunni , Daniel R. Puckett , Jay Venkataraghavan , Stephen R. Lewis , Angela L. Moore
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Main IPC: F02D41/26
- IPC: F02D41/26

Abstract:
An efficient control wave form is utilized to actuate the solenoids of a fuel system to reduce boost power/energy consumption. The solenoid is initially energized by applying a boost voltage from an electronic controller across a solenoid coil circuit. The electronic controller monitors the current level in the solenoid coil circuit, and changes to a reduced battery voltage when the current level in the solenoid coil circuit reaches a predetermined trigger current. The controller then maintains a pull-in current based upon battery voltage for a pull-in duration that initiates movement of the solenoid armature from an initial air gap position toward a final air gap position. After the pull-in duration, the current level is dropped to a hold in level for the remaining duration of the actuation event. The solenoid may be used for fuel injector control and/or pump control, such as to control fuel injection and pumping events respectively.
Public/Granted literature
- US20120067329A1 Efficient Wave Form To Control Fuel System Public/Granted day:2012-03-22
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