Anti-vibration device for vehicle
AssigneeNissan Motor Co., Ltd.
InventorsYuusuke Satou, Masahiko Kondo, Yoshinori Hirano
Life of this patent
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Abstract
An anti-vibration device for a vehicle has a first torque rod assembly having a first rod with one end fixed to an engine and the other end fixed to a vehicle body, an inertial mass supported on the first rod, and an actuator that reciprocates the inertial mass in an axial direction of the first rod, and a second torque rod assembly having a second rod with one end fixed to the engine and the other end fixed to a sub-frame that is installed on the vehicle body via an elastic member.
Claims12
An anti-vibration device for a vehicle comprising:
- a first torque rod assembly comprising:
- a first rod with one end fixed to an engine and the other end fixed to a vehicle body,
- an inertial mass supported on the first rod, and
- an actuator that reciprocates the inertial mass in an axial direction of the first rod;
- and
- a second torque rod assembly comprising:
- a second rod with one end fixed to the engine and the other end fixed to a sub-frame that is installed on the vehicle body via an elastic member,
- wherein the second torque assembly has no inertial mass and no actuator, and
- wherein a rigid body resonant frequency of the second torque rod assembly in both pitch and vertical directions is set higher than a rigid body resonant frequency of the sub-frame in both pitch and vertical direction under at least one operating condition.
An anti-vibration device for a vehicle comprising:
- a first torque rod assembly comprising:
- a first rod with one end fixed to an engine and the other end fixed to a vehicle body,
- an inertial mass supported on the first rod, and
- an actuator that reciprocates the inertial mass in an axial direction of the first rod;
- and
- a second torque rod assembly comprising:
- a second rod with one end fixed to the engine and the other end fixed to a sub-frame that is installed on the vehicle body via an elastic member,
- wherein the second torque assembly has no inertial mass and no actuator,
- wherein a rigid body resonant frequency of the second torque rod assembly in both pitch and vertical directions is set higher than a rigid body resonant frequency in an engine support direction.
An anti-vibration device for a vehicle comprising:
- a first torque rod assembly comprising:
- a first rod with one end fixed to an engine and the other end fixed to a vehicle body,
- an inertial mass supported on the first rod, and
- an actuator that reciprocates the inertial mass in an axial direction of the first rod;
- and
- a second torque rod assembly comprising:
- a second rod with one end fixed to the engine and the other end fixed to a sub-frame that is installed on the vehicle body via an elastic member,
- wherein a primary rigid body resonant frequency of the sub-frame is set less than a primary elasticity resonant frequency of the engine,
- wherein a rigid body resonant frequency of the first torque rod assembly in an engine torque support direction is set equal to or less than a primary resonant frequency of the engine, and
- wherein a rigid body resonant frequency of the second torque rod assembly in the engine torque support direction is set equal to or greater than the primary rigid body resonant frequency of the sub-frame and equal to or less than the primary elasticity resonant frequency of the engine.
Dependencies are inferred from the claim text.