Title:
MALFUNCTION DIAGNOSIS DEVICE FOR IGNITION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2017/150164
Kind Code:
A1
Abstract:
Provided is a malfunction diagnosis device for an ignition circuit, the malfunction diagnosis device being provided with a sparkplug (30), an ignition coil (19), a serial connection body (14) of a capacitor configured from a high-side capacitor (14A) and a low-side capacitor (14B), a serial connection body (13) of a switching element configured from a high-side switching element (13A) and a low-side switching element (13B), a both-end voltage detector (22) for detecting voltages at both ends of the serial connection body of the capacitor, a midpoint voltage detector (22) for detecting a midpoint voltage at a connection point between the high-side capacitor and the low-side capacitor, and a determination unit (40) for determining the location of a malfunction in the ignition circuit on the basis of at least one voltage among the both-end voltages and the midpoint voltage.
More Like This:
| WO/2007/063977 | INTERNAL COMBUSTION IGNITION DEVICE |
| JPH03111653 | PROCESSING CIRCUIT FOR OPTICAL COMBUSTION MONITOR |
Inventors:
MORITSUGU MICHIYASU (JP)
TAKEDA SHUNICHI (JP)
TAKEDA SHUNICHI (JP)
Application Number:
PCT/JP2017/005188
Publication Date:
September 08, 2017
Filing Date:
February 13, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02P17/00; F02P3/01
Foreign References:
| JP2002524687A | 2002-08-06 | |||
| US4998526A | 1991-03-12 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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