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A transverse engine is an engine mounted in a vehicle so that the engine's crankshaft axis is perpendicular to the long axis of the vehicle. Many modern front wheel drive vehicles use this engine mounting configuration. (Most rear wheel drive vehicles use a longitudinal engine configuration, where the engine's crankshaft axis is parallel to the long axis of the vehicle, except for some rear-mid engine vehicles, which use a transverse engine and transaxle mounted in the rear instead of the front.) ==History== The Critchley light car, made by the Daimler Motor Company in 1899, had a transverse engine with belt drive to the rear axle. A 1911 front-wheel drive car had a transverse engine with a clutch at each end, driving the front wheels directly. The first successful transverse-engine cars were the two-cylinder DKW "Front" series of cars, which first appeared in 1931. After the Second World War, SAAB used the configuration in their first model, the Saab 92, in 1947. The arrangement was also used for Borgward's Goliath and Hansa brand cars and in a few other German cars. However, it was with Alec Issigonis's Morris Mini and Austin Seven that the design gained acclaim, in 1959. This design reached its ultimate extent starting with Dante Giacosa's elaboration of it for Fiat. He connected the engine to its gearbox by a shaft and set the differential off-center so that it could be connected to the gearbox more easily. The axleshafts from the differential to the wheels therefore differed in length, which would have made the car's steering asymmetrical were it not for their torsional stiffness being made the same. Now most small and small/medium-sized cars built throughout the world use this arrangement. The Lamborghini Miura used a transverse, mid-mounted 4.0 litre V12, a configuration that was unheard of in 1965, although now more common (e.g. Noble M12, Toyota MR2, Pontiac Fiero, Fiat X1/9) The Land Rover LR2 Freelander, along with all Volvo models from 1998 on (including V8 models), employ a transversely-mounted engine in order to increase passenger space inside the vehicle. This has also allowed for improved safety in a frontal impact, due to more front to back engine compartment space being created. The result is a larger front crumple zone.〔(【引用サイトリンク】 title= Volvo S80 )〕 Transverse engines have also been widely used in buses. In the United States they were offered in the early 1930s by Twin Coach and used with limited success in Dwight Austin's Pickwick Nite-Coach. Transverse bus engines first appeared widely in the Yellow Coach 719, using Dwight Austin's V-drive; they continued in common use until the 1990s, though shorter V-configuration engines in a straight in "T-drive" configuration became common in the 1960s. They were also used in the British Leyland Atlantean and in many transit buses and nearly all modern double decker buses. They have also been widely used by Scania,〔(【引用サイトリンク】 title= Scania at Busworld 2005: New range of Scania buses and coaches )〕 MAN, Volvo and Renault's bus divisions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「transverse engine」の詳細全文を読む スポンサード リンク
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