Vibration-damping controlling apparatus

• US 8,423,243 B2
• Filed: 09/30/2009
• Issued: 04/16/2013
• Est. Priority Date: 09/30/2009
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Harima, Kenji
• Primary Examiner(s): Black, Thomas
• Assistant Examiner(s): PAIGE, TYLER D
• Application Number:
  US13/122,641
• Publication Number:
  US 20120179332A1
• Time in Patent Office: 1,294 Days
• Field of Search: 701/37, 180/337, 280/5.5
• 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 that suppresses a sprung vibration occurring in a vehicle by controlling torque generated in a wheel of the vehicle, comprising:

a vibration-damping controlling unit that calculates a correction amount of a driving torque for suppressing the sprung vibration when performing a vibration-damping control; and

a learning correcting unit that performs a learning correction of an air-fuel ratio when adjusting the air-fuel ratio of a mixture gas at a time of operation of an engine, wherein

when the learning correction of the air-fuel ratio is not completed by the learning correcting unit and when a learning of the air-fuel ratio at the time of the operation of the engine is performed, the vibration-damping controlling unit makes a magnitude of a vibration-damping torque, being a torque for vibration damping capable of suppressing the sprung vibration, different from the magnitude of the vibration-damping torque when the learning of the air-fuel ratio is not performed.

2. A vibration-damping controlling apparatus that suppresses a sprung vibration occurring in a vehicle by controlling torque generated in a wheel of the vehicle, comprising:

a vibration-damping controlling unit that calculates a correction amount of driving torque for suppressing the sprung vibration when performing a vibration-damping control; and

a catalyst deterioration detection controlling unit that performs a catalyst deterioration detection control, which is a control to estimate a deterioration state of a catalyst, wherein

the vibration-damping controlling unit makes a magnitude of a vibration-damping torque, being a torque for vibration damping capable of suppressing the sprung vibration, different according to the deterioration state of the catalyst, estimated by the catalyst deterioration detection controlling unit, 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 that suppresses a sprung vibration occurring in a vehicle by controlling torque generated in a wheel of the vehicle, comprising:

a vibration-damping controlling unit that calculates a correction amount of driving torque for suppressing the sprung vibration when performing a vibration-damping control; and

a catalyst deterioration detection performance judging unit that judges whether a catalyst deterioration detection control is performed, wherein

the vibration-damping controlling unit makes a magnitude of a vibration-damping torque, being 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 by the catalyst deterioration detection performance judging unit.