Continuous variable valve timing control device and control method therefor
AssigneeHyundai Kefico Corporation
InventorsJin Wook Baek, Nam Kyu Kim, Jong Rim Lee, Kyoung Ho Cho
Life of this patent
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Abstract
A continuously variable valve timing (CVVT) control device is provided. The CVVT control device includes an engine controlling unit (ECU) configured to output an actual phase angle and a target phase angle of an intake valve or an exhaust valve. The CVVT control device further includes an intellectual motor controller configured to receive the actual phase angle and the target phase angle from the ECU through digital communication in a vehicle. A driving current is generated for adjusting an output torque of a motor based on a phase deviation between the received actual phase angle and target phase angle.
Claims15
A continuously variable valve timing (CVVT) control device for combustion engines, comprising:
- a motor configured to provide a driving source and adjust a relative rotation speed of the motor with respect to a rotation speed of a camshaft of a combustion engine,
- wherein the camshaft includes a rotational phase that is configured to shift with respect to a crankshaft and adjust a valve timing of an intake valve or an exhaust valve;
- an engine controlling unit (ECU) configured to output an actual phase angle and a target phase angle of the intake valve or the exhaust valve;
- and
- an intellectual motor controller configured to receive the actual phase angle and the target phase angle from the ECU through digital communication in a vehicle and generate a driving current to adjust an output torque of the motor based on a phase deviation between the received actual phase angle and target phase angle.
A continuously variable valve timing (CVVT) control device for combustion engines, comprising:
- a motor configured as a driving source that adjusts a relative rotation speed of the motor with respect to a rotation speed of a camshaft of a combustion engine,
- wherein the camshaft is configured to adjust a rotation phase with respect to a crankshaft to adjust a valve timing of an intake valve or an exhaust valve;
- an engine controlling unit (ECU) configured to output a target phase angle of the intake valve or the exhaust valve;
- and
- an intellectual motor controller configured to receive the target phase angle from the ECU through digital communication in a vehicle, calculate an actual phase angle by using a crank angle signal received from a crankshaft position sensor sensing a rotation speed of the crankshaft and a cam angle signal received from a camshaft position sensor sensing the rotation speed of the camshaft, and generate a driving current for controlling an output torque of the motor by using a phase deviation between the received target phase angle and the calculated actual phase angle.
A control method of a continuously variable valve timing (CVVT) control device for combustion engines comprising:
- adjusting a relative rotation speed of a motor used as a driving source with respect to a rotation speed of a camshaft of a combustion engine to shift a rotation phase of the camshaft with respect to a crankshaft;
- adjusting a valve timing of an intake valve or an exhaust valve;
- receiving, by an intellectual motor controller, an actual phase angle and a target phase angle of the intake valve or the exhaust valve from an engine controlling unit (ECU) through digital communication in a vehicle, the intellectual motor controller being implemented as one body with the motor;
- and
- generating, by the intellectual motor controller, a driving current for adjusting an output torque of the motor based on a phase deviation between the received actual phase angle and target phase angle.
Dependencies are inferred from the claim text.