Title:
METHOD AND CIRCUIT FOR DRIVING INJECTOR
Document Type and Number:
Japanese Patent JP3534167
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an injector driving circuit capable of reducing an transition duration for opening a valve of an injector with a simple circuit configuration.
SOLUTION: Respective output voltages of generator coils W1 and W2 in a magnet generator 31 attached to an internal combustion engine are converted into direct currents E1 and E2 (E2<E1) by means of power circuits 32 and 33. A first capacitor C1 is charged by the direct current E1, and when an injection command signal is not generated, a charge controlling switch 34 is turned on so that a second capacitor C2 is charged by a voltage across the first capacitor C1. A voltage across the second capacitor C2 is applied to a series circuit of an injector 1 and a driving current controlling switch 30, thus feeding a starting current through the injector 1. A holding current is fed through the injector 1 from the second power circuit 33 through a diode D1.
Inventors:
Endo, Tokiaki
Application Number:
JP14303098A
Publication Date:
June 07, 2004
Filing Date:
May 25, 1998
Export Citation:
Assignee:
KOKUSAN DENKI CO LTD
International Classes:
F02M51/00; F02D41/02; F02D41/20; F02M51/06; F02P1/08; (IPC1-7): F02D41/20; F02D41/02; F02M51/00
Attorney, Agent or Firm:
松本 英俊 （外１名）