Slip-detecting device for a driving belt of a generator
First Claim
1. A slip-detecting device for a driving belt of a generator, the generator being driven by a driver via the driving belt and being electrically connected to a battery and electric loads, the device comprising:
- driver speed detecting means for detecting a rotational speed of the driver;
isolating means for isolating the battery from the generator and simultaneously raising an output voltage of the generator;
generator speed detecting means for detecting, when the battery is isolated from the generator and the output voltage is raised by the isolating means, a rotational speed of the generator based on fluctuation of the output voltage thereof; and
slip detecting means for detecting a slip of the driving belt based on the detected driver rotational speed and the detected generator rotational speed.
1 Assignment
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Accused Products
Abstract
An electrically heated catalytic converter (EHC) and a battery are connected to an alternator via a changeover switch. The changeover switch connects either of the EHC and the battery to the alternator. The slip-detecting device detects the rotational speed of the alternator from the frequency of the ripple in the output voltage of the alternator when the EHC is connected to the alternator, i.e., when the battery is isolated from the alternator. When the battery is isolated from the alternator, the output voltage of the alternator is raised, and the amplitude of the ripple becomes large accordingly. Further, since the battery is isolated, the ripples in the output voltage are not smoothed by the battery. Therefore, the rotational speed of the alternator is accurately detected. The slip-detecting device detects the slip of the driving belt of the generator based on the rotational speeds of the driver and the alternator.
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Citations
7 Claims
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1. A slip-detecting device for a driving belt of a generator, the generator being driven by a driver via the driving belt and being electrically connected to a battery and electric loads, the device comprising:
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driver speed detecting means for detecting a rotational speed of the driver; isolating means for isolating the battery from the generator and simultaneously raising an output voltage of the generator; generator speed detecting means for detecting, when the battery is isolated from the generator and the output voltage is raised by the isolating means, a rotational speed of the generator based on fluctuation of the output voltage thereof; and slip detecting means for detecting a slip of the driving belt based on the detected driver rotational speed and the detected generator rotational speed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification