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Title:
FUEL INJECTION DEVICE FOR DIRECTLY INJECTING TYPE DIESEL ENGINE
Document Type and Number:
Japanese Patent JPH07259688
Kind Code:
A
Abstract:

PURPOSE: To control an injection amount of fuel injected from an unit injector to a target value at all times, prevent fluctuation of the fuel injection amount in association with secular change thereof, and detect effluence of fuel surely.

CONSTITUTION: A flow meter 34 for detecting a fuel flow amount is provided on the way of each high pressure piping 9. In a control unit 13, on the basis of an engine rotating speed N, an acceleration opening degree A, and a common rail pressure P, an injection pulse width is found out, an injection pulse width signal 14 is outputted to the injection control solenoid valve 7 of each unit injector 6, and the target fuel injection amount of each cylinder which is calculated by the injection pulse width is compared with the fuel flow amount of each cylinder which is detected by each flow meter 34. A correcting pulse width is found out by compared result, and correcting pulse width signal 14' is outputtted to each injection control solenoid valve 7. An alarm 36 is provided to announce alarm when the correcting pulse width is not within a prescribed range.


Inventors:
Okazaki, Tetsuya
Application Number:
JP1994000053673
Publication Date:
October 09, 1995
Filing Date:
March 24, 1994
Export Citation:
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Assignee:
HINO MOTORS LTD
International Classes:
F02M47/00; F02D41/14; F02D41/20; F02D41/22; F02M51/00; F02B3/06; F02D41/38; (IPC1-7): F02M47/00; F02D41/14; F02D41/20; F02D41/22; F02M51/00
Attorney, Agent or Firm:
山田 恒光 (外1名)