Title:
IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE AND IGNITION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/112197
Kind Code:
A1
Abstract:
An ignition unit (11) has a superimposed-voltage generation circuit (17) that superimposes, between electrodes of an ignition plug (9), superimposed voltage of the same direction as discharge voltage, and the ignition unit supplies superimposed voltage in an operational range of no more than a given rotation speed and no more than a given load. Conduction time to a primary coil (15a) is fundamentally set in accordance with engine rotation speed, but the conduction time (TDWLON) used when superimposed voltage is supplied is set to be shorter than the conduction time (TDWLOFF) used when superimposed voltage is not supplied. Consequently, ignition unit (11) temperature elevation that is associated with the supply of superimposed voltage is suppressed.
Inventors:
SHIRAISHI TAISUKE (JP)
WATANABE KAZUHISA (JP)
OKAMOTO SHINICHI (JP)
WATANABE KAZUHISA (JP)
OKAMOTO SHINICHI (JP)
Application Number:
PCT/JP2013/080989
Publication Date:
July 24, 2014
Filing Date:
November 18, 2013
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02P3/00; F02P3/04; F02P3/045
Foreign References:
| JPS59103968A | 1984-06-15 | |||
| JP2009215902A | 2009-09-24 | |||
| JPH09324731A | 1997-12-16 | |||
| JPH01177455A | 1989-07-13 | |||
| JP2000257541A | 2000-09-19 | |||
| JPS63129167A | 1988-06-01 | |||
| JP2554568B2 | 1996-11-13 | |||
| JP2012136965A | 2012-07-19 |
Other References:
See also references of EP 2947309A4
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Hiromichi Kobayashi (JP)
Hiromichi Kobayashi (JP)
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