VARIABLE VALVE TIMING APPARATUS AND CONTROL METHOD THEREFOR
摘要
<p>An ECU executes a program including the step of stopping power supply to an electric motor if a phase of an intake valve is in a first region between the most retarded angle and CA (1) (YES at S108). In the case where the phase of the intake valve is in the first region, the rotational speed of relative rotation between the output shaft of the electric motor and a sprocket is reduced at reduction gear ratio R (1) thereby to vary the phase of the intake valve. In the case where the phase of the intake valve is in a second region between CA (2) and the most advanced angle, the rotational speed of the relative rotation is reduced at reduction gear ratio R (2) (R (1) > R (2)) thereby to vary the phase of the intake valve.</p>
申请公布号
WO2007099770(A1)
申请公布日期
2007.09.07
申请号
WO2007JP52653
申请日期
2007.02.07
申请人
TOYOTA JIDOSHA KABUSHIKI KAISHA;DENSO CORPORATION;MASHIKI, ZENICHIRO;INOUE, YASUMICHI;MORIYA, YOSHIHITO;URUSHIHATA, HARUYUKI