Automatic transmission with fail-safe function

Boots – shoes – and leggings

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Details

74866, B60K 4108, G06F 1550

Patent

active

049186060

ABSTRACT:
A rate of change in vehicle velocity is calculated by comparing a present vehicle velocity signal and an immediately preceding vehicle velocity signal. If the rate of change in vehicle velocity is greater than a rate of change capable of being produced by actual traveling of the vehicle, a decision is rendered to the effect that the vehicle velocity sensor is faulty, fail-safe mode processing is executed and the automatic transmission is controlled in such a manner that traveling of the vehicle will not be impaired. Thus, if the vehicle velocity sensor malfunctions, the automatic transmission can be controlled so as not to impair traveling of the vehicle, thereby allowing the vehicle to travel safely and stably. The fail-safe function can be performed satisfactorily even if only a single vehicle velocity sensor is provided.

REFERENCES:
patent: 4363973 (1982-12-01), Kawata et al.
patent: 4476530 (1984-10-01), Pannier et al.
patent: 4584906 (1986-04-01), Nagaoka et al.
patent: 4635508 (1987-01-01), Tatsumi
patent: 4722094 (1988-01-01), Goodzey
patent: 4747056 (1988-05-01), Yamamoto et al.

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