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Freelander2 : New Six-Speed Automatic and Manual Transmissions
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By MartinW at 2007-12-13 09:08
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Thursday, 22 June 2006
Both Freelander 2 engines are available with a sophisticated six-speed automatic transmission, while a six-speed manual is also available for the TD4 (diesel auto models become available from spring 2007).
They are both new transmissions specially developed for Land Rover’s challenging blend of on-road and off-road driving, and deliver power to Freelander 2’s unique full-time intelligent 4x4 driveline.
The Aisin Warner AWF21 six-speed automatic transmission is a light, compact unit that features a unique remote breather, deliberately routed above Land Rover’s wade line (500 mm water depth). Seamless shift quality is ensured by a new fully integrated electronic Transmission Control Module. The module uses different gearchange maps, depending on whether the transmission is in full auto, sport or manual CommandShift mode, and when the vehicle is using one of the special Terrain Response programmes.
In sport mode, the auto transmission is programmed to hold low gears longer and to shift down more readily, to assist acceleration
CommandShift allows manual sequential gearchanging
When Terrain Response special programmes are engaged, different mappings are applicable, depending on the mode chosen. The Transmission Control Module also manages torque converter lock-up, which has different requirements depending on the selected Terrain Response mode
The six-speed manual gearbox, available only with the TD4 diesel, is a Getrag M66 unit, specially adapted for Land Rover use. It has a four-shaft design, and gear selection by twin cables, to ensure short, positive changes. The dual-mass flywheel carries a single-plate 250 mm (9.84 inch) hydraulically actuated clutch. The system is fully self-adjusting, to maintain constant pedal loads through the vehicle’s life.
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