Slip-detecting device for a driving belt of a generator

Details Slip-detecting device for a driving belt of a generator Slip-detecting device for a driving belt of a generator

1997-09-11

2000-02-29

McCall, Eric S.

Measuring and testing

Simulating operating condition

Marine

322 29, 340428, 340455, G01M 1500

Patent

active

060295120

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.

REFERENCES:
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patent: 5144220 (1992-09-01), Iwatani et al.
patent: 5672954 (1997-09-01), Watanabe
SAE 941042, Development of an Alternator-Powered Electrically-Heated Catalyst System:, Paul M. Laing. May 24, 1994.
SAE 960342, Study on Conformity Technology with ULEV Using EHC System:, Yuichi Shimasaki, et al. 1996.

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