Caterpillar Inc.
FUEL SYSTEM AND FUEL INJECTOR CONTROL STRATEGY FOR STABILIZED INJECTION CONTROL VALVE CLOSING
Last updated:
Abstract:
A fuel system includes a fuel injector, and a fueling control unit electrically connected to a solenoid actuator in the fuel injector. The fueling control unit is structured to energize and deenergize the solenoid actuator to lift and return an armature coupled with an injection control valve. The fueling control unit also reenergizes the solenoid actuator with an armature retarding current while the armature is in flight to stabilize closing of the injection control valve. The armature retarding current can be used to electronically trim the fuel injector to limit an error in a quantity of injected fuel.
Status:
Application
Type:
Utility
Filling date:
19 Feb 2021
Issue date:
25 Aug 2022