Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1991-05-15
1992-03-10
Wright, Dirk
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74859, 74857, F16H 6104
Patent
active
050941259
ABSTRACT:
An automatic transmission containing a multi-stage shift mechanism composed of a planetary gear mechanism is arranged to change the output of the combustion engine in synchronization with its shift operation. The planetary gear mechanism is connected to the output shaft of the combustion engine through the torque converter and is so arranged as to assume four forward speed stages by coupling or uncoupling plural friction coupling elements such as clutches, etc. The number of revolutions of input of the planetary gear mechanism is detected through a sensor by detecting the number of revolutions of the turbine, and the number of revolutions of its output is likewise detected by a sensor. The output of the combustion engine is reduced by retarding the ignition timing as the shift operation is regarded as having been started when a difference between the virtual number of turbine revolution calculated on the basis of the speed stage prior to the shift and the actual number of turbine revolution becomes equal to or larger than a given value. The shift operation is regarded as having been ended when the difference becomes lower than the given value and the reduction of the output of the engine is released.
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Mazda Motor Corporation
Wright Dirk
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