ABNORMAL COMBUSTION DETECTION DEVICE FOR ENGINE AND ABNORMAL COMBUSTION DETECTION METHOD FOR ENGINE

Title:

ABNORMAL COMBUSTION DETECTION DEVICE FOR ENGINE AND ABNORMAL COMBUSTION DETECTION METHOD FOR ENGINE

Document Type and Number:

WIPO Patent Application WO/2015/033371

Kind Code:

A1

Abstract:

This abnormal combustion detection device (50) for an engine, said engine (1) being constructed so as to generate engine power by burning an air-fuel mixture that is supplied into a combustion chamber (2), comprises: an acceleration detector (12) for detecting a physical quantity correlating with a combustion state of the combustion chamber; a knock intensity calculation unit (52) for calculating a knock intensity in each combustion cycle on the basis of the physical quantity detected by the acceleration detector (12); and an abnormal combustion determination unit (54) for detecting abnormal combustion, except normal knocking that occurs under normal ignition in the combustion chamber (2), on the basis of at least either frequency, that is, how frequently the knock intensity calculated by the knock intensity calculation unit (52) becomes equal to or greater than a prescribed threshold value, or continuousness, that is, a state wherein the knock intensity stays equal to or greater than the prescribed threshold value over multiple combustion cycles.

Inventors:

YASUEDA SHINJI (JP)

Application Number:

PCT/JP2013/005196

Publication Date:

March 12, 2015

Filing Date:

September 03, 2013

Export Citation:

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Assignee:

YASUEDA SHINJI (JP)

International Classes:

F02D45/00

Foreign References:

JP2013104371A	2013-05-30
JP2012149552A	2012-08-09
JP2009203883A	2009-09-10
JP2008057438A	2008-03-13
JP2012112300A	2012-06-14
JP2013050096A	2013-03-14