Title:
FUEL INJECTOR AND FUEL INJECTION VALVE DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP3424239
Kind Code:
B2
Abstract:
PURPOSE: To improve the accuracy of main injection timing without increasing cost in a fuel injector to perform auxiliary injection before main injection.
CONSTITUTION: In a high speed drive circuit 70, a transformer 73 for charging a capacitor 71 and a charge switch 75 are arranged, and in the passage connecting the capacitor 71 and each electromagnetic coil 47, discharge switch 77 are arranged. The charge switch 75 and discharge switch 77 are controlled by a CPU 41. In addition, the voltage of the capacitor 71 is monitored by the CPU 41. In injecting fuel, after the charge of the capacitor 71 by turning on and off the charge switch 75 by fine pulses, the discharge switch 77 which has been turned on is turned off. After the completion of pilot injection, the discharge switch is turned off. Therefore, since the power has been accumulated in the capacitor 71 is discharged when main injection is conducted, high speed main injection and the improvement of accuracy can be realized.
More Like This:
| JPS58102767 | 【考案の名称】多気筒内焼機関の燃料遮断装置 |
Inventors:
Masahiko Miyaki
Application Number:
JP677292A
Publication Date:
July 07, 2003
Filing Date:
January 17, 1992
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D1/02; F02D41/20; F02D41/40; F02M51/00; (IPC1-7): F02D41/20; F02D1/02; F02D41/40; F02M51/00
Domestic Patent References:
| JP3138432A |
Attorney, Agent or Firm:
Tsutomu Adachi
Previous Patent: INTAKE SYSTEM OF ENGINE
Next Patent: WATER DISCHARGING RATE MEASUREMENT/CONTROL DEVICE AND WATER DISCHARGING FORM CHANGEOVER DEVICE
Next Patent: WATER DISCHARGING RATE MEASUREMENT/CONTROL DEVICE AND WATER DISCHARGING FORM CHANGEOVER DEVICE