Active vibration control apparatus for vehicle
First Claim
1. A method for controlling an active engine mount installed between the a power unit and a vehicle body of a vehicle, comprising the steps of:
- detecting as to whether a bending vibration mode of a vehicle body frame tends to be excited;
controlling the active engine mount according to a vibration of a member surrounding a passenger compartment of the vehicle when the bending vibration mode of a vehicle body frame tends to be excited; and
controlling the active engine mount according to a vibration transmitted from the power unit to the vehicle body through the active engine mount when the bending vibration mode of the vehicle body frame does not tend to be excited.
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Accused Products
Abstract
A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body is comprised of an active engine mount disposed between the power unit and the vehicle body. A controller is connected to a vehicle body vibration detector, a passenger compartment vibration detector and a drive force detector. The vehicle body vibration detector detects a vibration transmitted from the power unit to the vehicle body through the active engine mount. The passenger compartment vibration detector detects a vibration of a member defining a passenger compartment of the vehicle. The drive force detector detects as to whether driving force of the power unit is transmitted to driving wheels. The controller controls the active engine mount to reduce the passenger compartment vibration when the driving force is transmitted to the driving wheels and to reduce the vehicle body vibration when the driving force is not transmitted to the driving wheels.
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Citations
21 Claims
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1. A method for controlling an active engine mount installed between the a power unit and a vehicle body of a vehicle, comprising the steps of:
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detecting as to whether a bending vibration mode of a vehicle body frame tends to be excited; controlling the active engine mount according to a vibration of a member surrounding a passenger compartment of the vehicle when the bending vibration mode of a vehicle body frame tends to be excited; and controlling the active engine mount according to a vibration transmitted from the power unit to the vehicle body through the active engine mount when the bending vibration mode of the vehicle body frame does not tend to be excited.
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2. An apparatus for controlling an active engine mount installed between a power unit and a vehicle body of a vehicle, said apparatus comprising:
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means for detecting as to whether a bending vibration mode of a vehicle body frame tends to be excited; means for controlling the active engine mount according to the vibration of a member defining a passenger compartment of the vehicle when the bending vibration mode of a vehicle body frame tends to be excited; and means for controlling the active engine mount according to a vibration transmitted from the power unit to the vehicle body through the active engine mount when the bending vibration mode of the vehicle body frame does not tends to be excited.
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3. A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body, said vibration control apparatus comprising:
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an active engine mount disposed between the power unit and the vehicle body; vehicle body vibration detecting means for detecting a vibration transmitted from the power unit to the vehicle body through said active engine mount; passenger compartment vibration detecting means for detecting a vibration of a member defining a passenger compartment of the vehicle; drive force detecting means for detecting as to whether driving force of the power unit is transmitted to driving wheels; and control means controlling said active engine mount so as to reduce the vibration detected by said passenger compartment vibration detecting means when said drive force detecting means detects that the driving force is transmitted to the driving wheels, said controlling means controlling said active engine mount so as to reduce the vibration detected by said vehicle body vibration detecting means when said drive force detecting means detects that the driving force is not transmitted to the driving wheels. - View Dependent Claims (4, 5, 6)
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7. A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body, said vibration control apparatus comprising:
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an active engine mount disposed between the power unit and the vehicle body; vehicle body vibration detecting means for detecting a vibration transmitted from the power unit to the vehicle body through said active engine mount; passenger compartment vibration detecting means for detecting a vibration of a member defining a passenger compartment of the vehicle; engine rotation speed detecting means for detecting as to whether an engine rotation speed is smaller than a predetermined rotation speed where the frequency of the combustion basic order of an engine corresponds to a frequency which enables the bending vibration mode of the vehicle body frame to be excited; and control means controlling said active engine mount so as to reduce the vibration detected by said passenger compartment vibration detecting means when said engine rotation speed detecting means detects that the engine rotation speed is smaller than the predetermined rotation speed, said controlling means controlling said active engine mount so as to reduce the vibration detected by said vehicle body vibration detecting means when said engine rotation speed detecting means detects that the engine rotation speed is not smaller than the predetermined rotation speed. - View Dependent Claims (8)
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9. An apparatus for controlling an active engine mount installed between a power unit and a vehicle body of a vehicle, said apparatus comprising:
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a bending vibration mode detector detecting as to whether a bending vibration mode of a vehicle body frame tends to be excited; and a controller controlling the active engine mount according to the vibration of a member surrounding a passenger compartment of the vehicle when the bending vibration mode of a vehicle body frame tends to be excited, said controller controlling the active engine mount according to the vibration transmitted from the power unit to the vehicle body through the active engine mount when the bending vibration mode of the vehicle body frame does not tend to be excited.
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10. A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body, said vibration control apparatus comprising:
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an active engine mount disposed between the power unit and the vehicle body; a vehicle body vibration detector detecting a vibration transmitted from the power unit to the vehicle body through said active engine mount; a passenger compartment vibration detector detecting a vibration of a member defining a passenger compartment of the vehicle; a drive force detector detecting as to whether driving force of the power unit is transmitted to driving wheels; and a controller controlling said active engine mount so as to reduce the vibration detected by said passenger compartment vibration detector when said drive force detector detects that the driving force is transmitted to the driving wheels, said controller controlling said active engine mount so as to reduce the vibration detected by said vehicle body vibration detector when said drive force detector detects that the driving force is not transmitted to the driving wheels. - View Dependent Claims (11, 12, 13)
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14. A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body, said vibration control apparatus comprising:
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an active engine mount disposed between the power unit and the vehicle body; a vehicle body vibration detector detecting a vibration transmitted from the power unit to the vehicle body through said active engine mount; a passenger compartment vibration detector detecting a vibration of a member defining a passenger compartment of the vehicle; an engine rotation speed detector detecting as to whether an engine rotation speed is smaller than a predetermined rotation speed; and a controller controlling said active engine mount so as to reduce the passenger compartment vibration when the engine rotation speed is smaller than the predetermined rotation speed and so as to reduce the vehicle body vibration when the engine rotation speed is greater than the predetermined rotation speed, the predetermined rotation speed being defined by the frequency of the combustion basic order of an engine which frequency corresponds to a frequency enabling the bending vibration mode of the vehicle body frame to be excited. - View Dependent Claims (15)
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16. A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body, said vibration control apparatus comprising:
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an active engine mount disposed between the power unit and the vehicle body; a vehicle body vibration detector detecting a vibration transmitted from the power unit to the vehicle body through said active engine mount; a passenger compartment vibration detector detecting a vibration of a member defining a passenger compartment of the vehicle; a drive force detector detecting as to whether driving force of the power unit is transmitted to driving wheels; and a controller controlling said active engine mount so as to reduce the vibration detected by said vehicle body vibration detector when said drive force detector detects that the driving force is not transmitted to the driving wheels. - View Dependent Claims (17, 18)
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19. A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body, said vibration control apparatus comprising:
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an active engine mount disposed between the power unit and the vehicle body; a vehicle body vibration detector detecting a vibration transmitted from the power unit to the vehicle body through said active engine mount; a passenger compartment vibration detector detecting a vibration of a member defining a passenger compartment of the vehicle; an engine rotation speed detector detecting as to whether an engine rotation speed is smaller than a predetermined rotation speed, the frequency of the combustion basic order of an engine corresponding to a frequency which enables the bending vibration mode of the vehicle body frame to be excited when the engine is rotated in the predetermined rotation speed; and a controller controlling said active engine mount so as to reduce the vibration detected by said vehicle body vibration detector when said engine rotation speed detector detects that the engine rotation speed is not smaller than the predetermined rotation speed. - View Dependent Claims (20, 21)
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Specification