Transmission shift control device

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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Details

74861, 74865, 74878, B60K 4104

Patent

active

044111746

ABSTRACT:
In order to control shifting of the transmission of a vehicle, from the viewpoint of obtaining the optimum fuel economy and/or power output performance, a transmission shift control device is proposed which comprises a throttle sensor which generates a throttle signal, an engine speed sensor which generates an engine speed signal, a shift position sensor which generates a shift position signal indicating the present operating gear of the transmission, a memory which stores a relationship between the throttle opening and the engine speed for each shift position or operating gear of the transmission to give a target value for one of these two signals in accordance with the other of them, and a comparator which receives one of the above two signals and compares it with the target value therefor given from the memory and generates either an upshift signal or a downshift signal which is indicated to the driver or sent to the transmission so as automatically to shift it.

REFERENCES:
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patent: 3684066 (1972-08-01), Kubo et al.
patent: 3688609 (1972-09-01), Friedline
patent: 3805640 (1974-04-01), Schneider et al.
patent: 3922933 (1975-12-01), Sakai et al.
patent: 4023442 (1977-05-01), Woods et al.
patent: 4027554 (1977-06-01), Ito et al.
patent: 4061055 (1977-12-01), Iizuka et al.
patent: 4102222 (1978-07-01), Miller et al.
patent: 4109772 (1978-08-01), Poore
patent: 4269281 (1981-05-01), Schneider et al.

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