Title:
噴射弁駆動装置
Document Type and Number:
Japanese Patent JP6372426
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an injection valve drive device reducing the number of elements as much as possible, and capable of stopping only a cylinder whose terminal is short-circuited to thereby avoid engine stall.SOLUTION: An injection valve drive device 10 includes: a plurality of high-side switches 301, 302, 303 provided between a peak current drive part 201 and constant current drive parts 202, 203 and fuel injection valves 81, 82, 83 for each of a plurality of cylinders, and configured to supply or cut off valve opening current and holding current to or from the fuel injection valve provided in a corresponding cylinder; a plurality of detection resistances R1, R2, R3 connected in parallel for each of the plurality of high-side switches; and a voltage detection unit 30 configured to detect the voltages of connection parts between the peak current drive part 201 and constant current drive parts 202, 203 and the plurality of high-side switches 301, 302, 303.SELECTED DRAWING: Figure 1
Inventors:
Hiroaki Shirakawa
Application Number:
JP2015119152A
Publication Date:
August 15, 2018
Filing Date:
June 12, 2015
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/22; F02D41/20; F02D45/00; F02M51/06; H01F7/18
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Attorney, Agent or Firm:
Toru Kamada
Takuma Tsuda
Kentaro Ito
Takuma Tsuda
Kentaro Ito