Title:
内燃機関用燃料噴射装置
Document Type and Number:
Japanese Patent JP4042058
Kind Code:
B2
Abstract:
A fuel injection system for an internal combustion engine includes a fuel supply pump, a fuel pressure detector, and a control unit. The fuel supply pump supplies pressurized fuel to a fuel injection valve in the internal combustion engine. The fuel pressure detector detects the pressure of the fuel supplied. The control unit controls the amount of the fuel supplied based on a deviation between an actual fuel pressure and a target fuel pressure. The control unit includes an integral term calculator and an integral term holder. The integral term calculator adds an integral compensation quantity and a last-time integral term to calculate a this-time integral term based on an integral compensation quantity that is updated according to the deviation. The integral term holder stops the updating of the integral compensation quantity and retains the last-time integral term when a defect in the fuel supply pump is detected.
Inventors:
Shinji Uchiyama
Application Number:
JP2003386428A
Publication Date:
February 06, 2008
Filing Date:
November 17, 2003
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/38; F02D45/00; F02D31/00; F02D41/22; F02D41/40; F02M1/00; F02M39/00; F02M63/00; F02M63/02
Domestic Patent References:
| JP2000234543A | ||||
| JP8326617A | ||||
| JP2001082230A | ||||
| JP2003254139A | ||||
| JP10176592A |
Attorney, Agent or Firm:
Kenji Ishiguro