Title:
EEPROMが故障したときエンジンコントローラのパワーダウンに必要な時間を減らす方法及びシステム
Document Type and Number:
Japanese Patent JP2004509259
Kind Code:
A
Abstract:
A method of limiting engine control delays in an internal combustion engine having an electronic engine controller with an electronically erasable programmable read-only memory (EEPROM) for storing data. A timer and/or a counter may be used to limit re-attempts to write data to the EEPROM upon engine shutdown. If a predetermined time set by the timer for writing to the EEPROM has been exceeded, the system terminates the engine shutdown data write and allows the controller to switch to its low power mode. The counter counts the number of unsuccessful attempts to write to the EEPROM. If the number of unsuccessful attempts to write to the EEPROM exceeds the predetermined number of attempts, the system indicates that there has been a gross failure of the EEPROM and allows the engine control module to be switched to the low power mode. Both a timer and counter may be employed in the system.
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Inventors:
Avery Richard M Jr.
Application Number:
JP2002527435A
Publication Date:
March 25, 2004
Filing Date:
August 06, 2001
Export Citation:
Assignee:
Detroit Diesel Corporation
International Classes:
F02D45/00; F02D41/04; F02D41/24; F02D41/22; (IPC1-7): F02D45/00
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda