The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 2001
Filed:
May. 28, 1999
Shingo Morita, Tokyo, JP;
Koichi Okamura, Tokyo, JP;
Mituru Koiwa, Tokyo, JP;
Yutaka Ohashi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A combustion state detecting device for an internal combustion engine enables diverse combustion state detection by obtaining a plurality of currents analogous to an ion current. The combustion state detecting device includes a bias circuit,that applies an ion current detection voltage to an ignition plug,disposed in a cylinder of the internal combustion engine, an ion current signal distributor circuit,made up of a current mirror circuit for detecting the ion current on the basis of a voltage from the bias circuit, and current-voltage converter circuits,and,, to thereby produce a plurality of currents analogous to the ion current by the ion current signal distributor circuit.