Control system for active vibration isolation support system and method of use
First Claim
1. A control system for an active vibration isolation support system which supports, on a vehicle body, an engine that can switch between a first running state and a second running state which differ in the number of cylinders that are permitted to operate, the active vibration control system comprising an actuator, and the control system comprising a control device for controlling the actuator according to a vibrational state of the engine so as to suppress transmission of vibration from the engine to the vehicle body, wherein the control device continues control of the actuator corresponding to a vibration pattern of a running state prior to switching between running states for at least a period corresponding to one cycle of the vibration pattern, after determining that switching between the first and second running states is required, and wherein, if the vibration pattern of the running state prior to switching between running states continues after the control device determines that switching between the first and second running states is required, the control device continues control of the actuator corresponding to the vibration pattern of the running state prior to switching between running states for a period corresponding to one cycle of the vibration pattern after extinction of the vibration pattern of the running state prior to the switching between running states.
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Accused Products
Abstract
In a V6 engine that can switch between a first running state and a second running state which differ in the number of cylinders that are permitted to operate, when switching from L3 selective cylinder operation to V4 selective cylinder operation is determined to be required, control of an active vibration isolation support system corresponding to L3 selective cylinder operation is normally continued for one cycle. However, in this case of switching from L3 selective cylinder operation to V4 selective cylinder operation, a vibration pattern of L3 selective cylinder operation continues for longer than usual, that is, for a period greater than one cycle. Therefore, control of the active vibration isolation support system corresponding to the vibration pattern of L3 selective cylinder operation is continued for two cycles of the vibration pattern, thereby further effectively improve a vibrational state when switching between running states from L3 selective cylinder operation to V4 selective cylinder operation.
19 Citations
16 Claims
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1. A control system for an active vibration isolation support system which supports, on a vehicle body, an engine that can switch between a first running state and a second running state which differ in the number of cylinders that are permitted to operate,
the active vibration control system comprising an actuator, and the control system comprising a control device for controlling the actuator according to a vibrational state of the engine so as to suppress transmission of vibration from the engine to the vehicle body, wherein the control device continues control of the actuator corresponding to a vibration pattern of a running state prior to switching between running states for at least a period corresponding to one cycle of the vibration pattern, after determining that switching between the first and second running states is required, and wherein, if the vibration pattern of the running state prior to switching between running states continues after the control device determines that switching between the first and second running states is required, the control device continues control of the actuator corresponding to the vibration pattern of the running state prior to switching between running states for a period corresponding to one cycle of the vibration pattern after extinction of the vibration pattern of the running state prior to the switching between running states.
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12. A method of controlling an active vibration isolation support system which supports, on a vehicle body, an engine that can switch between a first running state and a second running state which differ in the number of cylinders that are permitted to operate,
the active vibration control system comprising an actuator, and the control system comprising a control device for controlling the actuator according to a vibrational state of the engine so as to suppress transmission of vibration from the engine to the vehicle body, the method comprising the following steps: -
controlling the actuator corresponding to a vibration pattern of a running state prior to switching between running states for at least a period corresponding to one cycle of the vibration pattern, after determining that switching between the first and second running states is required, and if the vibration pattern of the running state prior to switching between running states continues after the control device determines that switching between the first and second running states is required, controlling the actuator corresponding to the vibration pattern of the running state prior to switching between running states for a period corresponding to one cycle of the vibration pattern after extinction of the vibration pattern of the running state prior to the switching between running states. - View Dependent Claims (13, 14, 15, 16)
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Specification