engine

Japanese Patent JP6340290

B2

PROBLEM TO BE SOLVED: To provide an engine capable of performing an instantaneous detection of its abnormal condition.SOLUTION: This invention comprises a supercharger 40; a supercharger revolution speed sensor 55 for detecting revolution speed of the supercharger 40; ECU50 for detecting abnormal state of an engine. ECU50 defines data of supercharger revolution speed Nt in one cycle of an engine as an instantaneous supercharger revolution speed data Nt[1cyc], gets the instantaneous supercharger revolution speed data Nt[1cyc], calculates revolution speed Ne at the time of getting prestored instantaneous supercharger revolution speed data Nt[1cyc], calculates appropriate instantaneous supercharger revolution speed data m1Nt[1cyc] under engine load Ac, calculates difference data dNt[1cyc] between the obtained instantaneous supercharger revolution speed data Nt[1cyc] and the appropriate instantaneous supercharger revolution speed data m1Nt[1cyc], and detects abnormal state of the engine on the basis of an average value M or dispersion value V of the difference data dNt[1cyc].SELECTED DRAWING: Figure 2

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Ryota Minamino
Table
Go Asai
Keiichiro Yuzaki

JP2014181490A

June 06, 2018

September 05, 2014

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Yanmar Co., Ltd.

F02D45/00; F02B39/16; F02B77/08

JP63182245U
JP2002122037A
JP2003184607A
JP3023320A
JP2008240706A
JP2007332793A
JP5026778A
JP2007303382A

Juichiro Yano

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