Document Type and Number:
Japanese Patent JPS6364326
Kind Code:
B2
Abstract:
The system comprises an engine speed detecting device (5,10) for producing an engine speed output signal in proportion to the engine speed, and a vehicle speed detecting device (13) for producing a vehicle speed output signal in proportion to the vehicle speed. An operation circuit is provided for judging whether the ratio of the engine speed output to the vehicle speed output is in a range of transmission ratio dependent on the transmission. The operation circuit is so arranged as to produce at least one neutral state output (a, b) when the ratio of the engine speed output to vehicle speed output is not in the range of transmission ratio. The operation circuit comprises counters (120,126) for counting the output pulses, circuits (133,145) for producing signals which act to decide the period of operation of the counters, and circuits (121,127) including a gate circuit for producing the neutral state output in dependency on the result of the counting during the period of counter operation.
Application Number:
JP18717580A
Publication Date:
December 12, 1988
Filing Date:
December 27, 1980
Export Citation:
International Classes:
B60W10/04; B60K31/00; B60W10/06; B60W10/10; F02D29/02; F02D31/00; F02M3/07; F16H59/42; F16H59/44; F16H59/68; F16H59/70; F16H61/00; F16H63/50; G01P3/48; G01P3/484; F16H59/36; F16H59/40