Machine element or mechanism – Gearing – Interchangeably locked
Patent
1989-03-03
1990-07-31
Braun, Leslie A.
Machine element or mechanism
Gearing
Interchangeably locked
340686, B60K 2014, G08B 2100
Patent
active
049441949
ABSTRACT:
A drive control apparatus of an automatic transmission device for use in automotive vehicles including a shift actuator and a select actuator comprising a pair of fluid pressure actuators capable of displacing a shift lever in right-angled two directions of a shift direction and a select direction, a piston rod and a detection rod capable of being displaced for an equal amount with respect to each other by a working fluid which is to be supplied and discharged to and from the actuators, a plurality of electromagnetic valves for supplying and discharging a working fluid to and from the actuators according to a control signal, a position switch for withdrawably engaging in a detection groove formed in an outer periphery of the detection rod and, when engaged, detaining the piston rod and detecting a control reference position of the actuators and outputting a detection signal thereof, a stroke sensor for continuously detecting displacement of the piston rod through the detection rod and an outputting a detection signal thereof, and a control unit for calculating the best position for each said actuators according to an input information regarding the driving state of the automotive vehicle and the operating state of an engine thereof and outputting a processed signal thereof to the electromagnetic valve in order to control the electromagnetic valve and also feedback controlling the activation of the electromagnetic valve according to the detection signals received from the position switch and from the stroke sensor, the activation of the actuators being normally controlled according to the input signal from the stroke sensor but, when the stroke sensor is out of order, being controlled according to the input signal coming from the position switch.
REFERENCES:
patent: 4702127 (1987-10-01), Cote
patent: 4718307 (1988-01-01), Yabe et al.
patent: 4722237 (1988-02-01), McNinch, Jr.
patent: 4766774 (1988-08-01), Tamai
patent: 4796485 (1989-01-01), Ebina
Kono Hiromi
Satoh Yuji
Tanoue Akifumi
Braun Leslie A.
Diesel Kiki Co. Ltd.
Macris Harold F.
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