Title:
SUBSIDIARY CHAMBER TYPE IGNITION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/157322
Kind Code:
A1
Abstract:
A subsidiary chamber type ignition system (70) comprises: a partition wall (34) that partitions a combustion chamber (30) of an engine (90) into a subsidiary chamber (38) and a main chamber (31); and an ignition plug (40) that ignites fuel inside the subsidiary chamber (38). In a high load state, an ignition control unit (60) calculates optimum ignition timing (T1) earlier by a combustion time (t15) than prescribed optimum combustion timing (T5) as shown in Fig. 9(c), and performs optimum ignition control to control ignition timing (t1) at the optimum ignition timing (T1). In a low load state, a jetting control unit (63) performs jetting delay prevention control to prevent a jetting time (t13) from being longer compared with the high load state as shown in Fig. 9(d) to prevent the combustion time (t15) from being long, while the ignition control unit (60) performs the above optimum ignition control.
Inventors:
TAMURA RYO (JP)
IMANAKA YASUOMI (JP)
KAJI YUJI (JP)
IWAMI ATSUSHI (JP)
KAWASHIMA YUUTA (JP)
OKA TATSUYA (JP)
IMANAKA YASUOMI (JP)
KAJI YUJI (JP)
IWAMI ATSUSHI (JP)
KAWASHIMA YUUTA (JP)
OKA TATSUYA (JP)
Application Number:
PCT/JP2021/001283
Publication Date:
August 12, 2021
Filing Date:
January 15, 2021
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02B19/12; F02D43/00; F02P5/15; F02P9/00; F02P13/00; H01T13/54
Foreign References:
| JP2010261407A | 2010-11-18 | |||
| JP2007239603A | 2007-09-20 | |||
| JP2006161736A | 2006-06-22 | |||
| JP2016125352A | 2016-07-11 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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