ATTESA (acronym for Advanced Total Traction Engineering System for All-Terrain) is a four-wheel drive system used in some automobiles produced by the Japanese automaker Nissan, including some models under its luxury marque Infiniti. Quite similar to offerings from other manufacturers, drive passes from the gearbox to a center viscous limited slip differential, into a transfer case splitting drive to a co-located front differential, and tail shaft connected to the vehicle's rear differential.
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| - ATTESA (cs)
- ATTESA (en)
- ATTESA (ja)
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| - ATTESA（アテーサ）は、日産自動車が開発した、前後輪に駆動力を配分する機械式センターデフに並列配置/並列駆動のビスカスカップリングを組み合わせたフルタイム四輪駆動 (4WD) システムである。1987年9月発売の日産・ブルーバード(U12型)に初採用された。 センターデフはベベルギアで、基本的に50:50の前後トルク配分をする。この点が、FWDを基本とし、前後輪の回転差が生じて初めてビスカストルクの力で駆動力をリアに伝える、従前のビスカス4WDと決定的に異なる。 ATTESAは、さらに前後のホイール間に回転差が生じると、センターデフと並行したビスカスLSD(リミテッド・スリップ・デフ)がトルクを発揮しはじめ、本来、50:50の駆動力配分を、適切な範囲で“再配分”が可能となっている。 ATTESAとは、"Advanced Total Traction Engineering System for All"のアクロニムであり、4輪駆動力最適制御に由来している。 また、広報やカタログでは「ATTESA＝4輪駆動最適制御システム」と銘打ち、その技術をアピールした。 (ja)
- ATTESA (zkratka z Advanced Total Traction engineering System for All-Terrain) je systém pohonu 4 × 4, který používají některé automobily japonské značky Nissan, včetně několika modelů značky Infiniti. Je podobný systému pohonu 4 × 4 ostatních automobilek, přičemž točivý moment přechází z převodovky do středového viskózního samosvorného diferenciálu, který ho rozděluje na přední diferenciál a hnací hřídelí na zadní diferenciál. (cs)
- ATTESA (acronym for Advanced Total Traction Engineering System for All-Terrain) is a four-wheel drive system used in some automobiles produced by the Japanese automaker Nissan, including some models under its luxury marque Infiniti. Quite similar to offerings from other manufacturers, drive passes from the gearbox to a center viscous limited slip differential, into a transfer case splitting drive to a co-located front differential, and tail shaft connected to the vehicle's rear differential. (en)
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| - ATTESA (zkratka z Advanced Total Traction engineering System for All-Terrain) je systém pohonu 4 × 4, který používají některé automobily japonské značky Nissan, včetně několika modelů značky Infiniti. Je podobný systému pohonu 4 × 4 ostatních automobilek, přičemž točivý moment přechází z převodovky do středového viskózního samosvorného diferenciálu, který ho rozděluje na přední diferenciál a hnací hřídelí na zadní diferenciál. Mechanický systém ATTESA byl vyvinut pro příčné uspořádání motoru vozidla a představil se RNU12 Bluebird na japonském trhu, vstoupil do výroby v září 1987. Tento systém se rozběhl po celé série U12 (RNU12/HNU12) a byl přizpůsoben mnoha modelů U12 s různými kombinace motorů a převodovek. Téměř totožný systém je připevněn na RNN14 GTi-R Pulsar a HNU13 Bluebird a Primera HNP10, našel využití také v mnoha dalších modelech Nissan. (cs)
- ATTESA (acronym for Advanced Total Traction Engineering System for All-Terrain) is a four-wheel drive system used in some automobiles produced by the Japanese automaker Nissan, including some models under its luxury marque Infiniti. The 'mechanical' ATTESA system was developed for transverse layout vehicles and introduced with the RNU12 Bluebird in the Japanese market, entering production in September 1987. The system ran right throughout the U12 series (RNU12/HNU12) and was fitted to numerous U12 models with differing engine and transmission combinations. An almost identical system is fitted to the RNN14 GTi-R Pulsar and the HNU13 Bluebird and the HNP10 Primera, finding usage in numerous other Nissan models. Quite similar to offerings from other manufacturers, drive passes from the gearbox to a center viscous limited slip differential, into a transfer case splitting drive to a co-located front differential, and tail shaft connected to the vehicle's rear differential. From 2000 model year onwards, the system received an update where, as with a typical FWD car, the transaxle now contained a differential that drives the front wheels. However, an extra shaft from this differential also drives a bevel gear housed in the transfer case that permanently turns a driveshaft for the rear wheels (i.e. there is no longer a "center" differential). Housed in the rear differential is a viscous coupling that in normal conditions is disengaged. This means that for general driving, the system is FWD only. When the computer detects slippage of the front wheels, the viscous coupling engages and transfers up to 50% of the torque to the rear wheels. This system is superior in some aspects since the standard operation is FWD there is less power lost due to friction. However, it is no longer a full-time 4WD system, and since the coupling is in the rear differential, the driveshaft itself is constantly driven even though it is not connected to anything, which saps some power and efficiency (the analogue being the front driveshaft of a part-time 4x4 truck without locking hubs). (en)
- ATTESA（アテーサ）は、日産自動車が開発した、前後輪に駆動力を配分する機械式センターデフに並列配置/並列駆動のビスカスカップリングを組み合わせたフルタイム四輪駆動 (4WD) システムである。1987年9月発売の日産・ブルーバード(U12型)に初採用された。 センターデフはベベルギアで、基本的に50:50の前後トルク配分をする。この点が、FWDを基本とし、前後輪の回転差が生じて初めてビスカストルクの力で駆動力をリアに伝える、従前のビスカス4WDと決定的に異なる。 ATTESAは、さらに前後のホイール間に回転差が生じると、センターデフと並行したビスカスLSD(リミテッド・スリップ・デフ)がトルクを発揮しはじめ、本来、50:50の駆動力配分を、適切な範囲で“再配分”が可能となっている。 ATTESAとは、"Advanced Total Traction Engineering System for All"のアクロニムであり、4輪駆動力最適制御に由来している。 また、広報やカタログでは「ATTESA＝4輪駆動最適制御システム」と銘打ち、その技術をアピールした。 (ja)
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