Control device for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakashi Tsunooka, Shigemasa Hirooka, Shinichi Mitani, Akira Satou, Shigeyuki Urano
Life of this patent
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Abstract
In a control device for an internal combustion engine according to the present embodiment, the control device includes: cooling units arranged on a path where a coolant is circulated, and cooling an exhaust gas of an engine with the coolant flowing through the cooling units; an atmospheric pressure sensor detecting an atmosphere pressure; and ECUs deciding whether or not to perform an exhaust gas temperature control for suppressing a temperature of the exhaust gas based on whether or not a heat quantity is more than a decision value, and correcting the decision value to be lower as the atmosphere pressure is lower.
Claims7
A control device for an internal combustion engine, comprising:
- a cooling unit arranged on a path where a coolant is circulated, and cooling an exhaust gas of the internal combustion engine with the coolant flowing through the cooling unit;
- an heat quantity estimation portion estimating a heat quantity transferred from the exhaust gas to the coolant;
- an atmosphere pressure detection portion detecting an atmosphere pressure;
- and
- an engine control portion deciding whether or not to perform an exhaust gas temperature control for suppressing a temperature of the exhaust gas based on whether or not the heat quantity is more than a decision value, and the engine control portion correcting the decision value to be lower as the atmosphere pressure is lower.
Dependencies are inferred from the claim text.