ELECTROMAGNETICALLY OPERATED CLUTCH AND METHOD OF OPERATING AN ELECTROMAGNETICALLY OPERATED CLUTCH
First Claim
1. An electromagnetically operated clutch, in particular a friction clutch, for switching on and off units, such as a water pump, for example, in a vehicle, in particular a motor vehicle, comprising:
- a predefined electrical system voltage;
a clutch comprising an electromagnet with at least one coil, a rotor, and an armature plate, which is drawn against the rotor by the forces of the electromagnet in order to engage the clutch; and
control means, wherein the control means, in respect of a continuous operating state, are designed for an operating voltage level, which is less than the available electrical system voltage of the vehicle, the control means being suited to switching the electromagnet with a voltage level for engagement of the friction clutch that is greater than the operating voltage level and, by timing a supply voltage, to reducing it to the design operating voltage level for an operating phase when the clutch is continuously engaged.
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Accused Products
Abstract
An electromagnetically operated clutch, in particular a friction clutch, for switching on and off units, such as a water pump, in a vehicle, having a predefined electrical system voltage, the clutch including an electromagnet with at least one coil, a rotor, an armature plate, which is attracted to the rotor by the forces of the electromagnet in order to engage the clutch, and control means. The control means, which, in respect of a continuous operating state, are designed for an operating voltage level, which is less than the available electrical system voltage of the vehicle, the control means being suited to switching the electromagnet with a voltage level for engagement of the friction clutch that is greater than operating voltage level and, by timing the supply voltage, to reducing it to the design operating voltage level for an operating phase when the clutch is continuously engaged.
13 Citations
9 Claims
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1. An electromagnetically operated clutch, in particular a friction clutch, for switching on and off units, such as a water pump, for example, in a vehicle, in particular a motor vehicle, comprising:
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a predefined electrical system voltage; a clutch comprising an electromagnet with at least one coil, a rotor, and an armature plate, which is drawn against the rotor by the forces of the electromagnet in order to engage the clutch; and control means, wherein the control means, in respect of a continuous operating state, are designed for an operating voltage level, which is less than the available electrical system voltage of the vehicle, the control means being suited to switching the electromagnet with a voltage level for engagement of the friction clutch that is greater than the operating voltage level and, by timing a supply voltage, to reducing it to the design operating voltage level for an operating phase when the clutch is continuously engaged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification