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The Hy-Drive was a Chrysler Corporation semi-automatic transmission introduced in 1953 in US-market Plymouths.[1] It was a hybrid manual transmission equipped with a torque converter, like an automatic. Although Hy-Drive cars had a clutch pedal like a traditional manual transmission, it was only used to put the car in gear. Once underway, the driver could upshift and downshift using the gear shift without using the clutch or even lifting off the accelerator.

Hy-Drive
Overview
Manufacturer	Chrysler Corporation
Production	1953–1954
Body and chassis
Class	3-speed semi-automatic (manual with torque converter)
Chronology
Predecessor	Presto-Matic
Successor	PowerFlite

The industry was caught by surprise by the advent of the automatic transmission in the early-to-late-1940s. General Motors' Dynaflow, introduced by Buick in 1948,[2] was a smash hit with the public, very soon being fitted in over 80% of new Buicks.[3] (GM's fully automatic Hydramatic, which debuted in 1939, was in 70% of Pontiacs that year.[4]) Chrysler had previously offered a Fluid Drive fluid coupling (not a torque converter, as it did not multiply the torque) on their manual transmissions, and the Hy-Drive was an evolution of this. It was sold by Plymouth for the entire 1953 model year, and into April of the 1954 model year, when the fully automatic PowerFlite became [5] available.[2] About 75,000 cars came equipped with this transmission.

Trivia

• The Hy-Drive was so large it required a complete reengineering of the engine compartment and transmission tunnel.
• Export Plymouth-based Dodges and DeSotos could be ordered with Hy-Drive.
• Hy-Drive transmissions shared the engine's lubricating oil, requiring 11 quarts (10.4 L) for an oil change.

See also

• List of Chrysler transmissions

References

• "The Chrysler-Plymouth-Dodge-DeSoto Hy-Drive automatic transmission". Allpar.Com. Retrieved February 22, 2006.
• Flory, J. "Kelly", Jr. American Cars 1946-1959. Jefferson, NC: McFarland & Coy, 2008.

Notes

На других языках

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- [en] Hy-Drive

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[es] Hy-Drive

El Hy-Drive fue un sistema de transmisión semiautomática introducido por Chrysler en 1953 en los Plymouth del mercado estadounidense.[1] Era una transmisión manual híbrida equipada con un convertidor de par, como la mayoría de las cajas totalmente automáticas. Aunque los coches Hy-Drive tenían un pedal de embrague como una transmisión manual tradicional, solo se usaba para iniciar la marcha. Una vez circulando, el conductor podría subir y bajar de marcha usando la palanca de cambio sin pisar el embrague o incluso sin levantar el pie del acelerador.

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