Title:
ACCUMULATOR FUEL INJECTION INTERNAL COMBUSTION ENGINE AND FUEL CONTROLLING METHOD THEREOF
Document Type and Number:
Japanese Patent JP3944143
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an accumulator fuel injection internal combustion engine capable of automatically controlling the pressure inside a common rail with a simple means without requiring to obtain data by test working of an engine, capable of controlling the pressure inside the common rail in response to an external disturbance even if the external disturbance works, and capable of accurately controlling the pressure inside the common rail over the whole range of operation of the engine.
SOLUTION: In this accumulator fuel injection internal combustion engine, pressure of the fuel inside the common rail is detected to compute a pressure difference ΔP = P1 - P0 between a fuel pressure detection value P1 and the preset fuel pressure target value P0, and a part of the pressure difference ΔP is stored per the predetermined crank angle of the engine, and accumulated as a feed-forward quantity δPi. The feed-forward quantity δPi is added to a feedback output ΔPp obtained by controlling a residual part of the pressure difference ΔP with PID (proportion, integration and differentiation), and this operation is repeated in response to the crank angle of the engine to control to equalize the pressure inside the common rail.
Inventors:
Nakayama Yoshihiro
Shoji Nagagawa
Hidenobu Otsu
Shoji Nagagawa
Hidenobu Otsu
Application Number:
JP2003312162A
Publication Date:
July 11, 2007
Filing Date:
September 04, 2003
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F02D41/38; F02M47/00; F02M55/02; (IPC1-7): F02M47/00; F02D41/38; F02M55/02
Domestic Patent References:
| JP11324757A | ||||
| JP2001336442A | ||||
| JP2000282927A | ||||
| JP2001289099A |
Attorney, Agent or Firm:
Masahisa Takahashi
Hisamaru Hanada
Hisamaru Hanada