IDiyas

For the Inventor, By the Inventor

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.:

US 10247164 B1

PDFFull Text
Date of Patent:
Apr. 02, 2019

Filed:

Sep. 01, 2017

Ignition apparatus

Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventors:

Shota Kinoshita, Nishio, JP;

Fumiaki Aoki, Nishio, JP;

Akimitsu Sugiura, Kariya, JP;

Kaori Doi, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Hung Q Nguyen

Assistant Examiner:

Johnny H Hoang

Int. Cl.
CPC ...
F02P 3/055 (2006.01); F02P 17/02 (2006.01); H01T 15/00 (2006.01); H01F 38/12 (2006.01); F02P 3/01 (2006.01); F02P 3/00 (2006.01); F02P 9/00 (2006.01); F02P 5/15 (2006.01); F02P 17/12 (2006.01);
U.S. Cl.
CPC ...
F02P 3/055 (2013.01); F02P 3/005 (2013.01); F02P 3/01 (2013.01); F02P 9/002 (2013.01); F02P 17/02 (2013.01); H01F 38/12 (2013.01); H01T 15/00 (2013.01); F02P 5/1502 (2013.01); F02P 2017/121 (2013.01);
Abstract

An ignition apparatus includes an ignition plug, a boost transformer, an ignition power source and a measurement unit. The ignition plug has a center electrode and a ground electrode. The boost transformer supplies the ignition plug with electric power generated in a secondary coil upon supply of AC power from the ignition power source to a primary coil. The measurement unit measures the discharge voltage of the ignition plug. The ignition power source includes a discharge state determining unit that determines the discharge state of the ignition plug based on the measured discharge voltage and a current controlling unit that controls electric current supplied to the primary coil. When a discharge path formed between the center and ground electrodes of the ignition plug is determined by the discharge state determining unit as being in an over-extended state, the current controlling unit reduces the electric current supplied to the primary coil.

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