ENGINE CONTROL UNIT

PROBLEM TO BE SOLVED: To provide an engine control unit capable of avoiding detection failure and erroneous detection to enhance the reliability of diagnosis. SOLUTION: An engine control unit 2 includes a microcomputer 7 and a driver IC 9 and is mounted in a vehicle, and processes a signal from an e...

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Bibliographic Details
Main Authors MORIYA YASUSHI, OKUDA MAMORU, OKONOGI JUNJI
Format Patent
LanguageEnglish
Published 05.08.2010
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
BLASTING
COMBUSTION ENGINES
CONTROL OR REGULATION THEREOF
CONTROLLING COMBUSTION ENGINES
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MECHANICAL ENGINEERING
PHYSICS
TESTING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide an engine control unit capable of avoiding detection failure and erroneous detection to enhance the reliability of diagnosis. SOLUTION: An engine control unit 2 includes a microcomputer 7 and a driver IC 9 and is mounted in a vehicle, and processes a signal from an external sensor and outputs to external vehicle equipment a pulse signal corresponding to respective equipment to control a vehicle. A determination part 24 of the microcomputer 7 determines the reliability of the diagnosis with respect to the diagnosis of abnormality in an output terminal To of the driver IC 9, and sets a flag when driving the unit at a region low in reliability of diagnosis by detecting driver power voltage, driver drive frequency and on-duty ratio. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20090010187