Patent ID: 8763996

Claim:
An active vibration isolating support apparatus for reducing an engine vibration transmitted from an engine comprising: front and rear vibration isolating support units disposed ahead of and behind the engine respectively to elastically support the engine in a vehicle body, each of which comprises an actuator; and a control unit to estimate a vibration; wherein the control unit drives the actuators to extend and contract so as to reduce transmission of the estimated vibration, wherein the control unit: receives a TDC pulse signal to exhibit timing of a top dead center for each cylinder, and a crank pulse signal; determines a detection of a starting of the engine; sets a phase delay which delays a phase by a predetermined time difference from a timing at which it is determined that an initial explosion occurs to start the engine based on the TDC pulse signal and the crank pulse signal; determines a first selected unit from the front vibration isolating support unit and the rear vibration isolating support unit, to drive the actuator thereof to extend and contract; starts control of the first selected vibration isolating support unit with the set phase delay while maintaining the other vibration isolating support unit in an inactive state; and starts the actuator of the first selected vibration isolating support unit to extend and contract at a natural roll vibration frequency of the engine vibration, which is determined by the engine and the vibration isolating support unit, with a phase delay which is set at a timing when the starting of the engine is determined.