Downshift valve in hydraulic transmission control system

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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Details

74861, 74868, B60K 4110, B60K 4106

Patent

active

043133541

ABSTRACT:
In a hydraulic control system of an automatic power transmission for an automotive vehicle, a shift gear operable between a higher gear condition and a lower gear condition is designed to provide a satisfactory shift pattern to dictate the schedule for making an upshift from the gear ratios allocated to the shift valve and is arranged with a downshift which provides a satisfactory shift pattern to dictate the schedule for making a downshift between the particular gear ratios so that the respective shift patterns for the upshifting and downshifting schedules between the gear ratios can be selected independently of each other.

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patent: 3999450 (1976-12-01), Miyauchi et al.

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