VIBRATION-DAMPING CONTROLLING APPARATUS

• US 20120179332A1
• Filed: 09/30/2009
• Published: 07/12/2012
• Est. Priority Date: 09/30/2009
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Harima, Kenji
• Granted Patent: US 8,423,243 B2
• Time in Patent Office: Days
• US Class Current: 701/37
• CPC Class Codes: F02D 2250/28 Control for reducing torsional vibrations, e.g. at acceleration
• CPC Class Codes: F02D 41/1498 measuring engine roughness
• CPC Class Codes: F02D 41/2438 Active learning methods
• CPC Class Codes: F02D 41/2454 Learning of the air-fuel ratio control

Abstract

In a vibration-damping controlling apparatus for performing vibration-damping control which is control to suppress sprung vibration occurring in a vehicle by controlling torque generated in a wheel of the vehicle, the vibration-damping control is inhibited by making magnitude of vibration-damping torque as a torque for vibration damping capable of suppressing the sprung vibration different from the magnitude of the vibration-damping torque when learning of an air-fuel ratio is not performed, during the learning of the air-fuel ratio at the time of operation of an engine as a power source of the vehicle. According to this, it becomes possible to inhibit the vibration-damping control and control of learning correction of the air-fuel ratio from interfering with each other.

Claims

1. A vibration-damping controlling apparatus for suppressing sprung vibration occurring in a vehicle by controlling torque generated in a wheel of the vehicle, wherein

the vibration-damping controlling apparatus makes magnitude of vibration-damping torque as a torque for vibration damping capable of suppressing the sprung vibration different from the magnitude of the vibration-damping torque when learning of an air-fuel ratio is not performed, during the learning of the air-fuel ratio at the time of operation of an engine as a power source of the vehicle.

2. A vibration-damping controlling apparatus for suppressing sprung vibration occurring in a vehicle by controlling torque generated in a wheel of the vehicle, wherein

the vibration-damping controlling apparatus makes magnitude of vibration-damping torque as a torque for vibration damping capable of suppressing the sprung vibration different according to a state of deterioration of a catalyst for purifying exhaust gas discharged from an engine as a power source of the vehicle.

3. The vibration-damping controlling apparatus according to claim 2, wherein the magnitude of the vibration-damping torque is made different according to a temperature of the catalyst.

4. A vibration-damping controlling apparatus for suppressing sprung vibration occurring in a vehicle by controlling torque generated in a wheel of the vehicle, wherein

the vibration-damping controlling apparatus makes magnitude of vibration-damping torque as a torque for vibration damping capable of suppressing the sprung vibration different according to whether deterioration of a catalyst for purifying exhaust gas discharged from an engine as a power source of the vehicle is being diagnosed.