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Revision as of 14:58, 16 August 2024 edit2409:40e4:2d:7fe9:8000:: (talk) →Front mid-engine, rear-wheel-drive layoutTags: Mobile edit Mobile web edit← Previous edit Latest revision as of 18:34, 23 November 2024 edit undoVola31 (talk | contribs)28 editsmNo edit summary 
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A '''front-engine, rear-wheel-drive layout''' '''(FR)''' is an ] with an engine in front and ], connected via a ]. This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the 20th century.<ref>{{cite web|url=http://www.sae.org/technical/papers/2006-01-1339|title=Development of a New Hybrid Transmission for RWD Car|publisher=www.sae.org|access-date=2008-01-11|archive-url=https://web.archive.org/web/20090207074723/http://www.sae.org/technical/papers/2006-01-1339|archive-date=2009-02-07|url-status=dead}}</ref> It is also used in trucks, pickups, and ] ]es and ]es. A '''front-engine, rear-wheel-drive layout''' '''(FR)''', also called '''Systeme Panhard'''<ref name="R-MH">{{cite web |title=The Nostalgia of Forgotten Gods: Panhard & Levassor, France, 1886-1967 |url=https://roarington.com/media-house/stories/the-nostalgia-of-forgotten-gods-panhard-and-levassor-france-1886-1967 |website=Roarington |access-date=26 August 2024 |language=en}}</ref> is a ] with an engine in front and ], connected via a ]. This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the pre-1950s automotive mechanical projects.<ref>{{cite web|url=http://www.sae.org/technical/papers/2006-01-1339|title=Development of a New Hybrid Transmission for RWD Car|publisher=www.sae.org|access-date=2008-01-11|archive-url=https://web.archive.org/web/20090207074723/http://www.sae.org/technical/papers/2006-01-1339|archive-date=2009-02-07|url-status=dead}}</ref> It is also used in trucks, pickups, and ] ]es and ]es.


=={{anchor|FMR layout|FMR}}Front mid-engine, rear-wheel-drive layout== =={{anchor|FMR layout|FMR}}Front mid-engine, rear-wheel-drive layout==
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File:1968 AMC AMX yellow 390 auto md-er.jpg|The 390 cid V8 engine in a FR 1968 ] functionally straddles its front axle, with the centerline of the shock towers basically bisecting the center of the air cleaner File:1968 AMC AMX yellow 390 auto md-er.jpg|The 390 cid V8 engine in a FR 1968 ] functionally straddles its front axle, with the centerline of the shock towers basically bisecting the center of the air cleaner
E-Type Jag 4.2-litre engine 2022.jpg|The straight-6 DOHC ] clearly sits behind the front axle of an FMR ] E-Type Jag 4.2-litre engine 2022.jpg|The straight-6 DOHC ] clearly sits behind the front axle of an FMR ]
GMLT5.JPG|All ] from the second generation (model year 1963) through the seventh generation (model year 2019) are FMR. Only ancillary aspects of this ] engine may lie above the front axle. GMLT5.JPG|All ] from the second through the seventh generation are FMR. Only ancillary aspects of this ] engine may lie above the front axle.
Dodge Viper Motorraum.JPG|An FMR ] showing its 8.4&nbsp;L V10 positioned behind the car’s front axle Dodge Viper Motorraum.JPG|An FMR ] showing its 8.4&nbsp;L V10 positioned behind the car’s front axle
F_599_007.JPG|The ] V12 engine sitting behind the ]'s front axle. F_599_007.JPG|The ] V12 engine sitting behind the ]'s front axle.

Latest revision as of 18:34, 23 November 2024

Automobile layout
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FR layout

A front-engine, rear-wheel-drive layout (FR), also called Systeme Panhard is a powertrain layout with an engine in front and rear-wheel-drive, connected via a drive shaft. This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the pre-1950s automotive mechanical projects. It is also used in trucks, pickups, and high-floor buses and school buses.

Front mid-engine, rear-wheel-drive layout

FMR layout, the engine is located behind the front axle

A front mid-engine, rear-wheel-drive layout (FMR) places the engine in the front half of the vehicle but behind the front axle, which likewise drives the rear wheels via a driveshaft. Shifting the engine's center of mass rearward aids in front/rear weight distribution and reduces the moment of inertia, both of which improve a vehicle's handling.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.

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-style grand tourers often have FMR layouts, as a rear engine does not leave much space for rear seats.

Gallery

  • The 390 cid V8 engine in a FR 1968 AMC AMX functionally straddles its front axle, with the centerline of the shock towers basically bisecting the center of the air cleaner The 390 cid V8 engine in a FR 1968 AMC AMX functionally straddles its front axle, with the centerline of the shock towers basically bisecting the center of the air cleaner
  • The straight-6 DOHC XK engine clearly sits behind the front axle of an FMR Jaguar E-Type The straight-6 DOHC XK engine clearly sits behind the front axle of an FMR Jaguar E-Type
  • All Chevrolet Corvette from the second through the seventh generation are FMR. Only ancillary aspects of this Chevrolet Corvette ZR-1's engine may lie above the front axle. All Chevrolet Corvette from the second through the seventh generation are FMR. Only ancillary aspects of this Chevrolet Corvette ZR-1's engine may lie above the front axle.
  • An FMR Dodge Viper showing its 8.4 L V10 positioned behind the car’s front axle An FMR Dodge Viper showing its 8.4 L V10 positioned behind the car’s front axle
  • The F140 C V12 engine sitting behind the Ferrari 599's front axle. The F140 C V12 engine sitting behind the Ferrari 599's front axle.

See also

References

  1. "The Nostalgia of Forgotten Gods: Panhard & Levassor, France, 1886-1967". Roarington. Retrieved 26 August 2024.
  2. "Development of a New Hybrid Transmission for RWD Car". www.sae.org. Archived from the original on 2009-02-07. Retrieved 2008-01-11.
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