Invention Grant
US09228521B2 Fuel injection controller and fuel-injection-control system 有权
燃油喷射控制器和燃油喷射控制系统

  • Patent Title: Fuel injection controller and fuel-injection-control system
  • Patent Title (中): 燃油喷射控制器和燃油喷射控制系统
  • Application No.: US14070670
    Application Date: 2013-11-04
  • Publication No.: US09228521B2
    Publication Date: 2016-01-05
  • Inventor: Keita Imai
  • Applicant: DENSO CORPORATION
  • Applicant Address: JP Kariya
  • Assignee: DENSO CORPORATION
  • Current Assignee: DENSO CORPORATION
  • Current Assignee Address: JP Kariya
  • Agency: Nixon & Vanderhye PC
  • Priority: JP2012-243624 20121105
  • Main IPC: F02D41/20
  • IPC: F02D41/20
Fuel injection controller and fuel-injection-control system
Abstract:
A fuel injection controller includes a current-increase control portion applying a voltage to the coil so that the coil current is increased to a first target value, and a current-hold control portion applying the voltage to the coil so that the increased coil current is held at the first target value. A maximum electromagnetic attracting force to start a valve opening is referred to as a required valve-opening force. A saturated electromagnetic attracting force by the coil current of the first target value is referred to as a static attracting force. The first target value is established in such a manner that the static attracting force is greater than the required valve opening force.
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