Device for controlling an internal combustion engine with a variable valve timing system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshihiro Iwashita, Shigeo Kikori, Kazuhiko Shiratani, Shouji Katsumata, Keiji Yoeda, Makoto Ogiso, Hideyuki Nishida, Tomomi Yamada
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Abstract
A device for controlling an internal combustion engine with a variable valve timing system is provided. While the piston descends just after the combustion in the cylinder, the intake valve is opened by the variable valve system for the intake valve such that the intake air is supplied into the cylinder from the engine intake system.
Claims10
A device for controlling an internal combustion engine with a variable valve system wherein, while a piston of the engine descends during an expansion stroke in a cylinder of the engine, an intake valve is opened by the variable valve system for the intake valve such that intake air is supplied into the cylinder from the engine intake system, and pressure in the cylinder is lowered by opening an exhaust valve at an initial stage just after compression top dead center of the expansion stroke by the variable valve system for the exhaust valve and is then closed while in the expansion stroke before said intake valve is opened.
Dependencies are inferred from the claim text.