Rear-engine design

Last updated

In automobile design, a rear-engine design layout places the engine at the rear of the vehicle. The center of gravity of the engine itself is behind the rear axle. This is not to be confused with the center of gravity of the whole vehicle, as an imbalance of such proportions would make it impossible to keep the front wheels on the ground.

Contents

Rear-engine position / Rear-wheel drive Automotive diagrams 05 En.png
Rear-engine position / Rear-wheel drive

Rear-engined vehicles almost always have a rear-wheel drive car layout, but some are four wheel drive. This layout has the following features:

This layout was once popular in small, inexpensive cars and light commercial vehicles. Today most car makers have abandoned the layout although it does continue in some expensive cars, [3] like the Porsche 911. It is also used in some racing car applications, [4] low-floor buses, some Type-D school buses, and microcars such as the Smart Fortwo. Some electric cars feature both rear and front motors, to drive all four wheels. [5]

Notable rear-engined cars

Smart Fortwo's three-cylinder engine sits behind the rear axle. Smart Fortwo.jpg
Smart Fortwo's three-cylinder engine sits behind the rear axle.

See also

Related Research Articles

<span class="mw-page-title-main">Flat engine</span> Combustion engine using pistons facing to the sides on a common crankshaft

A flat engine is a piston engine where the cylinders are located on either side of a central crankshaft. Flat engines are also known as horizontally opposed engines, however this is distinct from the less common opposed-piston engine design, whereby each cylinder has two pistons sharing a central combustion chamber.

<span class="mw-page-title-main">Rear-engine, rear-wheel-drive layout</span> Automotive design

In automotive design, an RR, or rear-engine, rear-wheel-drive layout places both the engine and drive wheels at the rear of the vehicle. In contrast to the RMR layout, the center of mass of the engine is between the rear axle and the rear bumper. Although very common in transit buses and coaches due to the elimination of the drive shaft with low-floor buses, this layout has become increasingly rare in passenger cars.

<span class="mw-page-title-main">Rear mid-engine, rear-wheel-drive layout</span> Car layout in automotive design

In automotive design, an RMR, or rear mid-engine, rear-wheel-drive layout is one in which the rear wheels are driven by an engine placed with its center of gravity in front of the rear axle, and thus right behind the passenger compartment. Nowadays more frequently called 'RMR', to acknowledge that certain sporty or performance focused front-engined cars are also "mid-engined", by having the main engine mass behind the front axle, RMR layout cars were previously just called MR, or mid-engine, rear-wheel-drive layout), because the nuance between distinctly front-engined vs. front mid-engined cars often remained undiscussed.

Economy car is a term mostly used in the United States for cars designed for low-cost purchase and operation. Typical economy cars are small, lightweight, and inexpensive to both produce and purchase. Stringent design constraints generally force economy car manufacturers to be inventive. Many innovations in automobile design were originally developed for economy cars, such as the Ford Model T and the Austin Mini.

<span class="mw-page-title-main">Transaxle</span> Combined transmission, axle and differential in one assembly.

A transaxle is a single mechanical device which combines the functions of an automobile's transmission, axle, and differential into one integrated assembly. It can be produced in both manual and automatic versions.

<span class="mw-page-title-main">Flat-six engine</span> Horizontally opposed 6-cylinder piston engine

A flat-six engine, also known as a horizontally opposed-six, is a six-cylinder piston engine with three cylinders on each side of a central crankshaft. The most common type of flat-six engine is the boxer-six engine, where each pair of opposed cylinders moves inwards and outwards at the same time. An alternative configuration for flat engines is a 180-degree V engine, where both cylinders move to the right then the left at the same time.

<span class="mw-page-title-main">Mid-engine design</span> Automobile design in which the engine is placed between the front and rear axles

In automotive engineering, a mid-engine layout describes the placement of an automobile engine in front of the rear-wheel axles, but behind the front axle.

Getrag, stylized as GETRAG, was a major supplier of transmission systems for passenger cars and commercial vehicles. The company was founded on 1 May 1935, in Ludwigsburg, Germany, by Hermann Hagenmeyer; as the Getriebe und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG.

A swing axle is a simple type of independent suspension designed and patented by Edmund Rumpler in 1903 for the rear axle of rear wheel drive vehicles. This was a revolutionary invention in automotive suspension, allowing driven (powered) wheels to follow uneven road surfaces independently, thus enabling the vehicle's wheels to maintain better road contact and holding; plus each wheel's reduced unsprung weight means their movements have less impact on the vehicle as a whole. The first automotive application was the Rumpler Tropfenwagen, another early example was the 1923 Tatra 11 later followed by the Mercedes 130H/150H/170H, the Standard Superior, the pre-facelift Volkswagen Beetle and most of its derivatives, the Chevrolet Corvair, and the roll-over prone M151 jeep amongst others.

<span class="mw-page-title-main">Geneva International Motor Show</span> Annual Swiss auto show

The Geneva International Motor Show was an annual auto show held in March in the Swiss city of Geneva.

<span class="mw-page-title-main">International Motor Show Germany</span> Annual German motor show

The International Motor Show Germany or International Mobility Show Germany, in German known as the Internationale Automobil-Ausstellung, is one of the world's largest mobility trade fairs. It consists of two separate fairs, that subdivided in 1991. While the IAA Mobility displays passenger vehicles, motorcycles and bikes, the IAA Transportation specializes in commercial vehicles. Before the separation, the show was held solely at the Messe Frankfurt.

<span class="mw-page-title-main">Lists of automobile-related articles</span>

Lists of automobile-related articles cover a wide range of topics related to cars. The lists are organized by manufacturer, region, sport, technology and so on.

<span class="mw-page-title-main">LA Auto Show</span> Annual US auto show

The Los Angeles Auto Show, also known as the LA Auto Show, is an auto show held annually at the Los Angeles Convention Center in Los Angeles, California, United States. It is open to the public for ten days, filling 760,000 square feet (71,000 m2) of exhibit space. Since 2006 the event is held in November or December.

<span class="mw-page-title-main">Smart Forfour</span> Motor vehicle

The Smart Forfour is a city car (A-segment) marketed by Smart over two generations. The first generation was marketed in Europe from 2004 to 2006 with a front-engine configuration, sharing its platform with the Mitsubishi Colt. The second generation was marketed in Europe from 2014 after an eight-year hiatus, using rear-engine or rear electric motor configurations. It is based on the third-generation Renault Twingo, which also forms a basis for the third-generation Smart Fortwo. A battery electric version was marketed as the EQ Forfour beginning in 2018.

The 2006 Paris Motor Show took place from 30 September to 15 October 2006, in Paris expo Porte de Versailles, Paris, France.

<span class="mw-page-title-main">2010 Paris Motor Show</span> International auto show

The 2010 Paris Motor Show took place from 2 October to 17 October 2010, in Paris expo Porte de Versailles.

The European Motor Show Brussels is an auto show held biennial in the city of Brussels, Belgium. The number of visitors is around 600,000. The show is organized by FEBIAC and is scheduled by the Organisation Internationale des Constructeurs d'Automobiles.

<span class="mw-page-title-main">2014 Paris Motor Show</span> International auto show

The 2014 Paris Mondial de l'Automobile or 2014 Paris Motor Show took place from 4 October to 19 October 2014 on 'Automobile and Fashion' theme.

References

  1. "1965 Chevrolet Corvair" . Retrieved 16 March 2019.
  2. "What Is Rear Engine Layout And Know How Is It Beneficial?" . Retrieved 16 March 2019.
  3. Threewitt, Cherise. "10 Affordable Rear Engine Cars" . Retrieved 16 March 2019.
  4. Wong, J. Y. (2008). Theory of Ground Vehicles. Hoboken NJ: Wiley. p. 560. ISBN   0-471-35461-9.
  5. Adams, Eric. "The Secrets of Electric Cars and Their Motors: It's Not All About the Battery, Folks" . Retrieved 16 March 2019.
  6. Golseth, Andrew. "Why Is The Chevrolet Corvair Such An Overlooked Classic?" . Retrieved 16 March 2019.