Method for filtering rotational vibrations for motor vehicle
First Claim
1. A method for filtering out rotational vibrations transmitted by a drive shaft (11, 111) to an output shaft (19,119, 219);
- the method comprising the steps of;
providing a filtering device including a drive shaft damper (20, 120, 220) mounted to the output shaft (19) and an electromagnetic modulating device provided for matching a frequency of rotational vibration of the damper (20, 120, 220) to a frequency of rotational vibrations transmitted by the drive shaft (11, 111) which is inside the range of frequencies of the rotational vibrations to be damped out;
measuring a frequency of a rotational vibration transmitted by the drive shaft (11, 111); and
matching the frequency of the rotational vibration of the drive shaft damper (20, 120, 220) to the frequency of the rotational vibrations transmitted by the drive shaft (11,111).
1 Assignment
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Accused Products
Abstract
A method is provided for filtering out rotational vibrations transmitted by a drive shaft (11, 111) to an output shaft (19, 119, 219). The method comprises the following steps. First, a filtering device is provided that includes a drive shaft damper (20, 120, 220) mounted to the output shaft 19 and an electromagnetic modulating device. The drive shaft damper (20, 120, 220) is selectively tuneable by the electromagnetic modulating device to a frequency of a rotational vibration which is inside the range of frequencies of the rotational vibrations to be damped out. Then, a frequency of a rotational vibration transmitted by the drive shaft (11, 111) is measured. Subsequently, the frequency of the rotational vibration of the drive shaft damper (20, 120, 220) is matched to the frequency of the rotational vibrations transmitted by the drive shaft (11, 111).
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Citations
16 Claims
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1. A method for filtering out rotational vibrations transmitted by a drive shaft (11, 111) to an output shaft (19,119, 219);
- the method comprising the steps of;
providing a filtering device including a drive shaft damper (20, 120, 220) mounted to the output shaft (19) and an electromagnetic modulating device provided for matching a frequency of rotational vibration of the damper (20, 120, 220) to a frequency of rotational vibrations transmitted by the drive shaft (11, 111) which is inside the range of frequencies of the rotational vibrations to be damped out; measuring a frequency of a rotational vibration transmitted by the drive shaft (11, 111); and matching the frequency of the rotational vibration of the drive shaft damper (20, 120, 220) to the frequency of the rotational vibrations transmitted by the drive shaft (11,111). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the method comprising the steps of;
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11. A method for filtering out rotational vibrations in a transmission of a motor vehicle comprising a drive shaft (11, 111) driven by an engine of the motor vehicle, an output shaft (19, 119, 219) coupled to the drive shaft releasably through a clutch, and a gearbox (50) drivingly connected to the output shaft (19, 119, 219);
- the method for filtering out rotational vibrations transmitted by the drive shaft (11, 111) to the output shaft (19, 119, 219) comprising the steps of;
providing a filtering device including a drive shaft damper (20, 120, 220) mounted to the output shaft 19 and an electromagnetic modulating device provided for matching a frequency of rotational vibration of the damper (20, 120, 220) to a frequency of vibrations transmitted by the drive shaft (11, 111) which is inside the range of frequencies of the rotational vibrations to be damped out; measuring the frequency of a rotational vibration transmitted by the drive shaft (11, 111); and matching the frequency of the rotational vibration of the drive shaft damper (20, 120, 220) to the frequency of the rotational vibrations transmitted by the drive shaft (11, 111). - View Dependent Claims (12, 13, 14, 15, 16)
- the method for filtering out rotational vibrations transmitted by the drive shaft (11, 111) to the output shaft (19, 119, 219) comprising the steps of;
Specification