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Patent Searching and Data


Title:
IGNITION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/038561
Kind Code:
A1
Abstract:
This ignition device 1 is provided with a plasma device 10, a first circuit 11, a second circuit 12 and a control unit 13. The plasma device 10 causes plasma discharge to occur in an air-fuel mixture before arc discharge is caused to occur. The first circuit 11 causes an ignition plug 5 to begin arc discharge. During the arc discharge, the second circuit 12 energizes a primary coil 2 in the opposite direction to the energizing direction resulting from the first circuit 11, thereby maintaining the energizing direction of a secondary coil 3 in the same direction as the energization begun by the operation of the first circuit 11, and causing the arc discharge to continue. The control unit 13 controls the operation of the first circuit 11, the second circuit 12 and the plasma device 10. By this means, when causing plasma discharge to occur in an air-fuel mixture, the period during which energy is input into the ignition plug 5 can be shortened compared with a situation in which plasma discharge is not caused to occur in the air-fuel mixture, and the amount of energy input can thus be reduced.

Inventors:
KONO, Masaaki (INC. 14, Iwaya, Shimohasumi-cho, Nishio-cit, Aichi 12, 〒4450012, JP)
TANAKA, Daisuke (INC. 14, Iwaya, Shimohasumi-cho, Nishio-cit, Aichi 12, 〒4450012, JP)
SATO, Takaaki (INC. 14, Iwaya, Shimohasumi-cho, Nishio-cit, Aichi 12, 〒4450012, JP)
SUGIURA, Akimitsu (1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
TSUE, Mitsuhiro (3-1 Hongo 7-chome, Bunkyo-k, Tokyo 54, 〒1138654, JP)
NAKAYA, Shinji (3-1 Hongo 7-chome, Bunkyo-k, Tokyo 54, 〒1138654, JP)
Application Number:
JP2016/074523
Publication Date:
March 09, 2017
Filing Date:
August 23, 2016
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
THE UNIVERSITY OF TOKYO (3-1 Hongo 7-chome, Bunkyo-ku Tokyo, 54, 〒1138654, JP)
International Classes:
F02P3/00; F02P3/01; F02P23/04
Foreign References:
JP2010223189A2010-10-07
JP2015025397A2015-02-05
JP2009036125A2009-02-19
Attorney, Agent or Firm:
TOHDA, Kiyoshi (PDI Patent & Trademark Firm, KOJIMACHI MK BLDG. 3F 3-30, Kojimachi 4, Chiyoda-k, Tokyo 83, 〒1020083, JP)
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