FAILURE DIAGNOSIS DEVICE OF INTERNAL COMBUSTION ENGINE

Japanese Patent JP2017194048

A

PROBLEM TO BE SOLVED: To record data for diagnosing a failure causing the insufficiency of an output while suppressing a load of calculation without performing complicated processing, in a failure diagnosis device of an internal combustion engine (engine 1) which is mounted to, for example, an automobile.SOLUTION: An abnormal time at which an abnormal state that an accelerator opening Acc is not smaller than a first prescribed opening Acc1, and a ratio (torque achievement rate: Tact/Treq) of actual output torque Tact with respect to required torque Treq is lower than a prescribed value (a) continues is measured (step ST4: counting means). When the abnormal time is not shorter than a preset time, and the accelerator opening Acc is not smaller than a second prescribed opening Acc2, it is determined that a diagnosis of a failure is necessary (step ST7: determination means), and prescribed data are recorded in recording means (for example, backup RAM 104) (step ST9: control means).SELECTED DRAWING: Figure 4

KATO NATSUHIRO
KACHI MASAHIRO
MIYAZAKI KIWAMU

JP2016220180A

October 26, 2017

November 11, 2016

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TOYOTA MOTOR CORP

F02D45/00; B60R16/02; F02B77/08; F02D29/02

JP2013184512A	2013-09-19
JP2010163950A	2010-07-29
JP2003083137A	2003-03-19
JP2014234113A	2014-12-15
JP2012155608A	2012-08-16
JP2004036506A	2004-02-05
JP2005315171A	2005-11-10

WO2006016423A1	2006-02-16
WO2015118766A1	2015-08-13
WO2014045697A1	2014-03-27
WO2015072269A1	2015-05-21
US6073715A	2000-06-13
US20040204813A1	2004-10-14

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