SPARK-IGNITED INTERNAL COMBUSTION ENGINE AND METHOD OF CONTROLLING THE SAME

A spark-ignited internal combustion engine includes a variable compression ratio mechanism (A) that changes a mechanical compression ratio, and a variable valve timing mechanism (B) that controls a valve closing timing at which an intake valve is closed, in which the amount of intake air that is sup...

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Bibliographic Details
Main Authors KAMIYAMA EIICHI, AKIHISA DAISUKE
Format Patent
LanguageEnglish
Published 15.01.2010
Subjects
BLASTING
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:A spark-ignited internal combustion engine includes a variable compression ratio mechanism (A) that changes a mechanical compression ratio, and a variable valve timing mechanism (B) that controls a valve closing timing at which an intake valve is closed, in which the amount of intake air that is supplied into a combustion chamber (15) is controlled by changing the valve closing timing of the intake valve (7), and when an air-fuel ratio is increased from a first desired air-fuel ratio to a second desired air-fuel ratio, the valve closing timing of the intake valve (7) is brought close to an intake bottom dead center until the air-fuel ratio becomes equal to the second desired air-fuel ratio, without changing a fuel injection amount.
Bibliography:Application Number: KR20097023415