CRANK ANGLE DETECTION DEVICE OF ENGINE

Title:

CRANK ANGLE DETECTION DEVICE OF ENGINE

Document Type and Number:

Japanese Patent JP2008057507

Kind Code:

A

Abstract:

To enable to determine a shift of a compression top dead center by precisely determining the compression top dead center based on ion current detected with an ion current detection means.

The device comprises an ignition timing changing means 41 changing ignition timing of an ignition plug 7 in an advanced side such that a peak point of a latter slope of an ion current waveform is positioned around the compression top dead center, and a determination means 42 detecting the peak point of the latter slope of the ion current waveform with an ion current detection means 33 and determining the compression top dead center based on a crank angle position where the peak appears, when the ignition timing is changed in the advanced side by the ignition timing changing means 41.

Inventors:

ABE HIROHIDE

Application Number:

JP2006238449A

Publication Date:

March 13, 2008

Filing Date:

September 04, 2006

Export Citation:

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Assignee:

MAZDA MOTOR

International Classes:

F02D45/00; F02D41/04; F02D43/00; F02P5/15; F02P17/12

Domestic Patent References:

JPH0634490A	1994-02-08
JPH10252632A	1998-09-22
JP2005351148A	2005-12-22
JP2005220748A	2005-08-18

Attorney, Agent or Firm:

Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura

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