INTERNAL COMBUSTION ENGINE

摘要

An internal combustion engine includes a lift amount adjusting apparatus, a valve opening-closing timing control apparatus, a first assist portion, a second assist portion, and an engine control portion. The engine control portion performs a lift amount adjustment control controlling the lift amount adjusting portion to reduce a push force that the valve applies on the camshaft when the camshaft rotates in a case where the engine control portion receives start information of the internal combustion engine, controls the phase changing portion thereafter to change the relative rotational phase toward the advanced angle direction or toward the retarded angle direction on a basis of a predetermined condition, controls the lift amount adjusting portion thereafter to make the lift amount reach a predetermined amount corresponding to the predetermined condition, and drives a starter motor of the internal combustion engine thereafter.

主权项

1. An internal combustion engine, comprising:
a lift amount adjusting apparatus driven by a lift amount adjusting portion and adjusting a lift amount of a valve at a combustion chamber when a camshaft for opening and closing the valve of the internal combustion engine rotates; a valve opening-closing timing control apparatus including a driving-side rotating member synchronously rotating with a crankshaft of the internal combustion engine, a driven-side rotating member coaxially positioned relative to the driving-side rotating member and integrally rotating with the camshaft, and a lock mechanism retaining a relative rotational phase between the driving-side rotating member and the driven-side rotating member at a predetermined lock phase, the valve opening-closing timing control apparatus driven by a phase changing portion and adjusting opening-closing timings of the valve by selectively changing the relative rotational phase between the driving-side rotating member and the driven-side rotating member toward an advanced angle direction or toward a retarded angle direction that is different from the advanced angle direction; a first assist portion configured to adjust the lift amount adjusted by the lift amount adjusting portion while the internal combustion engine is in a stopped state; a second assist portion configured to change the relative rotational phase changed by the phase changing portion while the internal combustion engine is in the stopped state; and an engine control portion performing a lift amount adjustment control controlling the lift amount adjusting portion to reduce a push force that the valve applies on the camshaft when the camshaft rotates in a case where the engine control portion receives start information of the internal combustion engine, controlling the phase changing portion then to change the relative rotational phase toward the advanced angle direction or toward the retarded angle direction on a basis of a predetermined condition, controlling the lift amount adjusting portion then to make the lift amount reach a predetermined amount corresponding to the predetermined condition, and driving a starter motor of the internal combustion engine after the engine control portion controls the lift amount adjusting portion to make the lift amount reach the predetermined amount corresponding to the predetermined condition.