Electronic control apparatus of an automatic speed changing appa

Details Electronic control apparatus of an automatic speed changing appa Electronic control apparatus of an automatic speed changing appa

1974-07-24

1977-06-07

Scott, Samuel

Machine element or mechanism

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

Preselected indexed position

B60K 4118

Patent

active

040275540

ABSTRACT:
In an electronic control apparatus of an automatic speed changing apparatus for use in an internal combustion engine of the type wherein the engine is connected with a load through a fluid type torque converter and a multiple stage gear changer, there are provided means for locking-up the torque converter when the speed of the output shaft thereof exceeds a first predetermined speed, means for shifting-up the gear changer to a higher stage when the speed of the output shaft exceeds a second predetermined speed which is higher than the first predetermined speed, and means for shifting-down the gear changer to a lower stage when the speed of the output shaft decreases below a third predetermined speed which is lower than the first predetermined speed whereby effecting automatic speed change control while the torque converter is maintained in the locked-up condition.

REFERENCES:
patent: 3448640 (1969-06-01), Nelson
patent: 3805640 (1974-04-01), Schneider et al.

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