초록 ▼

A valve operating control device for an internal combustion engine having a valve operating mode changing mechanism for switching the opening/closing operation of an intake or exhaust valve between a low-speed operation mode corresponding to a low-speed operation of the engine and a high-speed opera

A valve operating control device for an internal combustion engine having a valve operating mode changing mechanism for switching the opening/closing operation of an intake or exhaust valve between a low-speed operation mode corresponding to a low-speed operation of the engine and a high-speed operation mode corresponding to a high-speed operation of the engine. A control device controls the operation of the valve operation mode changing mechanism according to the rotational speed of the engine for shifting the valve operation mode changing mechanism from the high-speed mode to the low-speed mode where the output torque of the engine is the same in the low- and high-speed operation modes of the valve operation mode changing mechanism and for shifting the valve operation mode changing mechanism from the low-speed operation mode to the high-speed operation mode at a second rotational speed that is higher than the first rotational speed.

대표청구항 ▼

A valve operation control device for an internal combustion engine having a valve operation mode changing mechanism for switching the opening/closing operation of an intake or exhaust valve between a low-speed operation mode corresponding to a low-speed operation of the engine and a high-speed opera

A valve operation control device for an internal combustion engine having a valve operation mode changing mechanism for switching the opening/closing operation of an intake or exhaust valve between a low-speed operation mode corresponding to a low-speed operation of the engine and a high-speed operation mode corresponding to a high-speed operation of the engine, and control means for controlling the operation of the valve operation mode changing mechanism according to the rotational speed of the engine, comprising, a rotational speed detector for detecting the rotational speed of the engine connected to said control means, said control means having a first rotational speed setting that is substantially equal to a rotational speed at which the output torque of the engine remains the same in the low- and high-speed operation modes of the valve operation mode changing mechanism for said control means to cause shifting of the valve operation mode changing mechanism from the high-speed operation mode to the low-speed operation mode, and said control means having a second rotational speed setting higher than the first rotational speed for causing of the valve operation mode changing mechanism from the low-speed operation mode to the high-speed operation mode.