overdrive

overdrive
[1] A unit with a planetary gearset which turns the driveshaft faster than the transmission output shaft.
[2] An additional gearbox which is mounted in the driveline. Normally the final drive ratio is 1:1; but the overdrive makes it less (e.g., 0.87:1). The overdrive can reduce gas consumption at sustained high-speed driving, engine noise, and engine wear. Also called "overdrive transmission." Also see aftermarket overdrive

Dictionary of automotive terms. 2015.

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  • overdrive — o ver*drive , n. 1. (Machinery) A gearing device which causes the drive shaft of an automobile or other machine to rotate at a speed greater than that of the engine crankshaft. [PJC] 2. (Automotive) The gear setting of a motor vehicle at which… …   The Collaborative International Dictionary of English

  • OverDrive — (homonymie) Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. La notion d overdrive peut renvoyer à : un procédé d optimisation matérielle, en informatique. un type de modulation sonore, en musique.… …   Wikipédia en Français

  • Overdrive — (homonymie) Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. La notion d overdrive peut renvoyer à : un procédé d optimisation matérielle, en informatique. un type de modulation sonore, en musique.… …   Wikipédia en Français

  • overdrive — s.n. Dispozitiv interpus în transmisia unui automobil pentru a multiplica turaţia roţilor sau a micşora pe aceea a motorului în scopul diminuării uzurii şi consumului. [pron. ovă dráiv. / < engl. over drive]. Trimis de LauraGellner, 02.07.2005 …   Dicționar Român

  • Overdrive — O ver*drive , v. t. & i. To drive too hard, or far, or beyond strength. [1913 Webster] …   The Collaborative International Dictionary of English

  • overdrive — index harass, ill use Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • Overdrive — Overdrive,der:⇨Schnellgang …   Das Wörterbuch der Synonyme

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