final drive

final drive
This is the end of the drive train before power is transmitted to the wheels. In a typical car, the engine (or electric motor) transmits its power through some sort of clutch into a transmission. Then the power is transmitted to differential gears that adjust the engine speed to the most efficient use intended. These final drive differential gears are either at the front axle or rear axle, depending on the vehicle's layout. A typical family car or one intended for high speeds will have a low numerical ratio, to give it speed and good fuel efficiency. A truck or performance car is likely to have a high numerical ratio for better pulling power or for better acceleration

Dictionary of automotive terms. 2015.

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  • final drive ratio — This is the ratio that describes the difference between the number of times the driveshaft must turn before the axle shaft turns once. In a final drive ratio of 3.55:1, for example, the driveshaft must turn 3.55 times before the axle will turn… …   Dictionary of automotive terms

  • final drive — noun (Machinery, industrial equipment) The final gear train between the transmission and the ground. In automotive and heavy equipment, this is the differential gear and axle assembly that turns the wheels or …   Wiktionary

  • final drive — noun the last part of the transmission system in a motor vehicle …   English new terms dictionary

  • final drive — noun : the means for transmitting power from the propeller shaft to the rear axle in an automotive vehicle …   Useful english dictionary

  • final drive gear — The last gear in a drivetrain before the driven wheels. Usually it is in the differential …   Dictionary of automotive terms

  • Drive shaft — This article is about the mechanical device. For the fictional music group from the American television series Lost , see Charlie Pace. Not to be confused with Axle. Drive shaft with universal joints at each end and a spline in the centre A drive …   Wikipedia

  • drive — [1] to travel in a car as in the expression, We drove to Chicago. [2] to operate a vehicle as in the expression, Martha drove to New York by herself. [3] to cause a wheel, shaft, etc. to turn or rotate. [4] to propel a vehicle. [5] a journey in a …   Dictionary of automotive terms

  • final — adj. & n. adj. 1 situated at the end, coming last. 2 conclusive, decisive, unalterable, putting an end to doubt. 3 concerned with the purpose or end aimed at. n. 1 the last or deciding heat or game in sports or in a competition (Cup Final). 2 the …   Useful english dictionary

  • drive gear — The gear which transmits the power to a driven gear. Also see final drive gear …   Dictionary of automotive terms

  • drive ratio — See final drive ratio …   Dictionary of automotive terms

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