Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1984-03-27
1989-07-11
Dorner, Kenneth J.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74865, 74877, 3644241, B60K 4106
Patent
active
048460206
ABSTRACT:
A vehicular automatic transmission control system comprising: a hydraulic control circuit including a hydraulic pressure source, a pressure regulator valve for producing a line pressure by regulating the oil pressure supplied from the pressure source, a number of shift valves for selectively engaging and releasing friction members of the automatic transmission according to operating conditions of a vehicle such as vehicle speed and throttle opening rate, and a solenoid valve blocking switching operation of a highest shift gear toward a highest gear position of the transmission; and an electronic control circuit for controlling on- and off-ranges of the solenoid valve, including a manual mode switch for setting the control either in a highest speed non-cancel mode permitting shifts to the highest gear position or a highest speed cancel mode inhibiting shifts to the highest gear position and forcibly effecting a downshift when selected during operation in the highest gear position, and a vehicle speed sensor; characterized in that: the electronic control circuit is arranged to nullify setting of the highest gear cancel mode by the manual mode switch at a vehicle speed higher than a predetermined value.
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Kondo Hidehiro
Miki Nobuaki
Aisin-Warner Limited
Diehl Dwight G.
Dorner Kenneth J.
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