Control apparatus for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHidefumi Aikawa
Life of this patent
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Abstract
A control apparatus is applied to an internal combustion engine that is capable of implementing reduced-cylinder operation and all-cylinder operation. When the internal combustion engine is stopped during implementation of reduced-cylinder operation, and then the internal combustion engine is restarted in reduced-cylinder operation with the same cylinders as idling cylinders, the initial crank angle when cranking starts is controlled so that the position of the piston of at least one among the idling cylinders is in the vicinity of its top dead center.
Claims7
A control apparatus for a hybrid vehicle comprising an internal combustion engine that has a plurality of four or more cylinders, the control apparatus implementing both a reduced-cylinder operation in which a portion among the plurality of cylinders is idled by stopping respective intake valves and exhaust valves in a closed state while a remaining cylinder operates and an all-cylinder operation in which all of the plurality of cylinders operate, the control apparatus comprising:
- an electronic control unit
- configured to control a start of the internal combustion engine by controlling an electric motor of the hybrid vehicle to crank the internal combustion engine,
- configured to set an initial crank angle which is a crank angle when cranking is started to restart the internal combustion engine from a stopped state, and
- when the internal combustion engine is stopped during the reduced-cylinder operation and the internal combustion engine is restarted in the reduced-cylinder operation with same cylinders as idling cylinders, configured to set the initial crank angle so at least one cylinder among the idling cylinders is substantially at top dead center when cranking is started to restart the internal combustion engine.
Dependencies are inferred from the claim text.