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Porsche 928 S4 (rear view) The Porsche 928 is a grand touring car with a 2+2 seating layout manufactured by Porsche AG of Germany from 1978 to 1995. Initially conceived to address changes in the automotive market, it represented Porsche's first fully in-house design for a production vehicle and was intended to potentially replace the Porsche 911 as the company's flagship model. [1]
The maximum torque capacity is 330 N⋅m (243 lb⋅ft). The 4HP 22 was produced for vehicles with rear wheel drive or 4X4 layout. Introduced in 1980, it was produced through 2003, and has been used in a variety of cars from BMW, General Motors, Jaguar, Land Rover, Maserati, Peugeot, Porsche, and Volvo.
Their eight-cylinder engine made 176 kW (240 hp) at a moderate 5,500 rpm, which was sufficient for a top speed of 230 km/h. The engine’s nominal torque was 350 Nm at 3,600 rpm. Progressively, Porsche engineers leveraged the potential within the eight-cylinder engine. The 928 S debuted at the 1979 IAA car show.
The 8HP 70 transmission with the gearset 4 in 23-85-teeth-configuration was the pilot series and therefore without generation designation. It was first used in the BMW 7 Series (F01) 760Li, has a torque handling limit of 700 N⋅m (516 lb⋅ft), and weighs 87 kg (192 lb).
The 5HP is the last transmission family with serial power flow: to provide more gears, components were added. This makes these transmissions larger, heavier and even more expensive to manufacture. As the presence of 10 main components (together with brakes and clutches) in the Ravigneaux gearbox types shows, this meant the end of the ...
Problems with this transmission are well known. [citation needed] This transmission locks up the torque converter in all gears, increasing wear. Combined with a sealed transmission pan and "lifetime fluid", some people have experienced catastrophic transmission failure.
A direct-shift gearbox (DSG, German: Direktschaltgetriebe [1]) [2] [3] is an electronically controlled, dual-clutch, [2] multiple-shaft, automatic gearbox, in either a transaxle or traditional transmission layout (depending on engine/drive configuration), with automated clutch operation, and with fully-automatic [2] or semi-manual gear selection.
Study for a Porsche 928 with aluminum body 2747: 1988: Proposed PFF (Porsche Vehicle Family) 2756 Study for a Porsche 928 with aluminum body 2758: 1990–1995: Mercedes 500E/E500 assembly 2800: 1990–1991: Studies of 3512-powered car for World Sportscar Championship: 2804: 1988: Four-cylinder engine derived from 2708 2806: 1988: Six-cylinder ...