Compact multi-ratio automatic transmission

Details Compact multi-ratio automatic transmission Compact multi-ratio automatic transmission

1999-05-18

2000-06-06

Ta, Khoi Q.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475276, 475281, 475282, 475288, F16H 366

Patent

active

060712082

ABSTRACT:
An automatic transmission for motor vehicles comprising three interconnected planetary gear units, two rotating friction clutches and four friction brakes providing six optimized forward gear ratios and a reverse ratio, all assembled into a compact package no larger than the current four-speed automatic transmissions. This invention preferably utilizes two multi-plate rotating clutches and special friction force balanced brake bands that allows self-synchronized ratio shifts without creating any side loading of associated band drums.

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