Front-engine, rear-wheel-drive layout
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Afront-engine, rear-wheel-drive layout(FR)is anautomotive designwith an engine in front andrear-wheel-drive,connected via adrive shaft.This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the 20th century.[1]It is also used in trucks, pickups, andhigh-floorbusesandschool buses.
Front mid-engine, rear-wheel-drive layout[edit]
Afront mid-engine, rear-wheel-drive layout(FMR)places the engine in the front half of the vehicle butbehindthe front axle, which likewise drives the rear wheels via a driveshaft. Shifting the engine'scenter of massrearward aids in front/rearweight distributionand reduces themoment of inertia,both of which improve a vehicle'shandling.While the mechanical layout of an FMR is substantially the same as an FR car, the classification of some models of the same vehicle may vary as either FR or FMR depending on the length of the engine (e.g. 4-cylinder vs. 6-cylinder) and its center of mass in relation to the front axle.[citation needed]
FMR cars are often characterized by a long hood and front wheels that are pushed forward to the corners of the vehicle, close to the front bumper.2+2-stylegrand tourersoften have FMR layouts, as a rear engine does not leave much space for rear seats.
Gallery[edit]
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The 390 cid V8 engine in a FR 1968AMC AMXfunctionally straddles its front axle, with the centerline of the shock towers basically bisecting the center of the air cleaner
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The straight-6 DOHCXK engineclearly sits behind the front axle of an FMRJaguar E-Type
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AllChevrolet Corvettefrom the second generation (model year 1963) through the seventh generation (model year 2019) are FMR. Only ancillary aspects of thisChevrolet Corvette ZR-1'sengine may lie above the front axle.
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An FMRDodge Vipershowing its 8.4 L V10 positioned behind the car’s front axle
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TheF140 CV12 engine sitting behind theFerrari 599's front axle.
See also[edit]
References[edit]
- ^"Development of a New Hybrid Transmission for RWD Car".www.sae.org. Archived fromthe originalon 2009-02-07.Retrieved2008-01-11.