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Patent Searching and Data


Title:
DRIVE CONTROL METHOD FOR GLOW PLUGS
Document Type and Number:
WIPO Patent Application WO/2010/001888
Kind Code:
A1
Abstract:
This drive control method for glow plugs suppresses deterioration caused by thermal stress without sacrificing the necessary maximum temperature. When the period of post glow of ceramic glow plugs (50-1 to 50-n) ends, if it is judged that the cooled state in the combustion chamber of an engine has not reached a predetermined highly cooled condition for a first predetermined time or longer, power supply for the post glow is stopped (S106, S112), whereas if it is judged that the cooled condition in the combustion chamber of the engine has reached the predetermined highly cooled condition for the first predetermined time or longer, a predefined map of post-glow-extending voltages is used to obtain the voltage for extending the post glow power supply, extension of the power supply is started using the voltage, and subsequently, when it is judged that the cooled state in the combustion chamber of the engine is transitioning to a state in which the predetermined highly cooled condition has abated over a second predetermined time or longer, extension of the post glow power supply is stopped (S108, S110), thereby easing thermal stress and suppressing deterioration of the ceramic heater.

Inventors:
TANAKA Arihito (13-26 Yakyu-cho 3-chome, Higashi-Matsuyama-sh, Saitama 03, 〒3558603, JP)
田中 有仁 (〒03 埼玉県東松山市箭弓町3丁目13番26号 ボッシュ株式会社内 Saitama, 〒3558603, JP)
CHO Kan (13-26 Yakyu-cho 3-chome, Higashi-Matsuyama-sh, Saitama 03, 〒3558603, JP)
Application Number:
JP2009/061949
Publication Date:
January 07, 2010
Filing Date:
June 30, 2009
Export Citation:
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Assignee:
BOSCH  CORPORATION (6-7 Shibuya 3-chome, Shibuya-ku Tokyo, 60, 〒1508360, JP)
ボッシュ株式会社 (〒60 東京都渋谷区渋谷3丁目6番7号 Tokyo, 〒1508360, JP)
TANAKA Arihito (13-26 Yakyu-cho 3-chome, Higashi-Matsuyama-sh, Saitama 03, 〒3558603, JP)
田中 有仁 (〒03 埼玉県東松山市箭弓町3丁目13番26号 ボッシュ株式会社内 Saitama, 〒3558603, JP)
International Classes:
F23Q7/00
Foreign References:
JP2000249034A
JPS5572661A
JPS59145372A
JP2004259610A
JP2003240240A
Other References:
See also references of EP 2314922A1
Attorney, Agent or Firm:
ABIKO Tsutomu (Rm.703, Paredoru-Nihonbashi 6-3, Nihonbashi-Horidome-cho 1-chome, Chuo-k, Tokyo 12, 〒1030012, JP)
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