Automatic transmission provided with mode preventing increase in

Details Automatic transmission provided with mode preventing increase in Automatic transmission provided with mode preventing increase in

1986-09-29

1988-03-29

Staab, Lawrence J.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74866, B60K 4104

Patent

active

047335815

ABSTRACT:
The present invention provides an automatic transmission provided with an oil temperature increase prevention mode which automatically shifts gears on the basis of a gear-change pattern of that mode, and which is one of a plurality of gear-change patterns, in which downshift points are shifted toward the high-speed side from a standard gear-change pattern when the oil temperature signal rises above the level of a signal corresponding to a given temperature; and a control system for judging that oil temperature has increased to a given temperature on the basis of the oil temperature signal, and generating control signal so as to change the mode to the oil temperature increase prevention mode.

REFERENCES:
patent: 3640156 (1972-02-01), Mori et al.
patent: 3724294 (1973-04-01), Gaus
patent: 4509124 (1985-04-01), Suzuki et al.
patent: 4524645 (1985-06-01), Tatsumi
patent: 4572029 (1986-02-01), Kinugasa et al.
patent: 4590561 (1986-05-01), Abo et al.

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