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US 2003/0196481 A1Published application
Combustion state detection apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsKoichi Okamura, Hisanori Nobe, Yasuhiro Takahashi, Mitsuru Koiwa
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Abstract
Ion current detection signal output section for outputting an ion current detection signal including a failure determination signal of an ignition operation is provided, and a failure determination as well as a combustion state can be performed based on this ion current detection signal.
Claims10
A combustion state detection apparatus comprising:
- an ignition coil;
- an ignition coil primary current switching section;
- an ion current detection section which detects an ion current;
- a failure determination signal output section which outputs a failure determination signal of an ignition operation;
- an ion current detection signal output section which outputs an ion current detection signal including the ion current and the failure determination signal;.
- a combustion state detection section which detects a combustion state of an internal combustion engine based on the ion current detection signal;
- and
- a failure determination section which determines failure of the ignition coil based on the ion current detection signal.
5 more elements
A combustion state detection apparatus comprising:
- an ignition coil;
- an ignition coil primary current switching section;
- an ion current detection section which detects an ion current;
- a failure determination signal output section which outputs a failure determination signal of an ignition operation;
- an ion current detection signal output section which outputs an ion current detection signal including the ion current and the failure determination signal;
- a second failure determination signal output section which outputs a second failure determination signal of an ignition operation;
- a combustion state detection section which detects a combustion state of an internal combustion engine based on the ion current detection signal;
- a failure determination section which determines failure of the ignition coil based on the ion current detection signal;
- and
- a second failure determination section which determines failure of the ignition coil based on the second failure determination signal.
7 more elements
Dependencies are inferred from the claim text.