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AssigneeToyota Jidosha Kabushiki Kaisha
InventorsNaohide Fuwa, Masanobu Kanamaru, Masaaki Konishi, Akinori Osanai, Satoru Watanabe, Masato Ehara
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A device for controlling an internal combustion engine, comprising a variable valve mechanism for varying opening areas (valve lift) or the working angles (valve-opening periods) of at least either the intake valves or the exhaust valves, wherein a pressure in the cylinder is calculated based on the opening area or the working angle of at least either the intake valve or the exhaust valve varied by the variable valve mechanism, and the internal combustion engine is controlled based on the pressure in the cylinder. Upon calculating the pressure in the cylinder based on the opening areas or the working angles of the intake and exhaust valves, it is possible to more suitably control the internal combustion engine based not only upon the peak combustion pressure in the cylinder like when a combustion pressure sensor is used but also upon a pressure in the cylinder at a moment other than the peak combustion pressure.
A device for controlling an internal combustion engine based on a temperature of a certain portion in a cylinder, comprising a variable valve mechanism for varying opening areas of at least either an intake valve or an exhaust valve, wherein a temperature of gas in the cylinder is calculated based on the opening area of at least either the intake valve or the exhaust valve varied by the variable valve mechanism, and the internal combustion engine is controlled based on the temperature of gas in the cylinder.
A device for controlling an internal combustion engine based on a temperature of a certain portion in a cylinder, comprising a variable valve mechanism for varying working angles of at least either an intake valve or an exhaust valve, wherein a temperature of gas in the cylinder is calculated based on the working angle of at least either the intake valve or the exhaust valve varied by the variable valve mechanism, and the internal combustion engine is controlled based on the temperature of gas in the cylinder.
A device for controlling an internal combustion engine, comprising a variable valve mechanism for varying opening areas and working angles of at least either an intake valve or an exhaust valve, wherein a temperature of gas in a cylinder is calculated based on the opening area and the working angle of at least either the intake valve or the exhaust valve varied by the variable valve mechanism, and the internal combustion engine is controlled based on the temperature of gas in the cylinder.
Dependencies are inferred from the claim text.