Title:
燃料噴射制御装置
Document Type and Number:
Japanese Patent JP5541245
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To change over drive current of a flow rate regulating valve by an existing signal without modifying an interface between a control device and a driving device.SOLUTION: A decoder 15 of an EDU 7 outputs a drive signal Dn to an injector driving circuit 16 when an injection signal IJTn of any one of cylinders comes into an injection instruction state. Further, when injection signals IJT1-IJT4 of all cylinders are simultaneously 1 (injection instruction state) while an engine is in a decelerating state without injection, a current changeover signal SC is set to 1 to decrease a current detection resistance value of a current detection resistor circuit 39. Since a drive control circuit 45 sets a drive signal S2 to 1 and drives a transistor 32 to be ON until detection voltage of a voltage detection circuit 46 reaches a predetermined threshold value, the drive current when an electromagnetic coil PC starts up increases.
Inventors:
Shigeo Tojo
Yasuhide Masunaga
Takuya Noguchi
Reiko Kurono
Yasuhide Masunaga
Takuya Noguchi
Reiko Kurono
Application Number:
JP2011157893A
Publication Date:
July 09, 2014
Filing Date:
July 19, 2011
Export Citation:
Assignee:
Denso, Inc.
International Classes:
F02D41/20; F02D41/22; F02D45/00; F02M59/20; F02M59/36; F02M63/00
Attorney, Agent or Firm:
Patent business corporation Satow international patent firm