Jaguar Reveals New XKR and XFR with GKN Driveline's Electronic Torque Manager ETM - COMPLETE VIDEO


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GENEVA - March 6, 2009: At the 2009 Geneva motor show this week, Jaguar revealed its new 503 horsepower XKR and XFR models fitted for the first time with the company’s new Active Differential Control system (ADC). At the heart of Jaguar's ADC system is GKN Driveline's ETM electronic limited slip differential (eLSD).


Click PLAY to watch the complete Jaguar Press Conference

The ETMŪ is a rear axle differential with an integrated active coupling that provides unsurpassed vehicle traction and stability through high speed optimal torque allocation to the powered wheels. Its integrated electronically controlled direct actuation makes it a highly suited module for improving dynamic performance in sports cars such as the new XKR and XFR.

Key to the ETMŪ’s performance are a smooth and immediate engagement (mechanically pre-emptive), high control accuracy and the exceptional release response time, all of which are ensured by the ETMŪ’s ‘smart’ actuator. An electronic control unit with GKN's proprietary IPM software constantly monitors torque requirements and manages an electric motor that directly rotates the cam gear of a unidirectional ball-ramp mechanism. The rotational torque causes the balls to roll up the opposing ramps, which pushes the front cam forward and activates the clutch. Without intervention from the driver, the system continuously adapts to both the driver’s demands and the amount of grip available at each individual wheel.

The decision to introduce the GKN Driveline product represents two firsts – Jaguar's first fitment of an eLSD for volume production cars and the first time that GKN Driveline has supplied its ETMŪ for a high performance car.

GKN Driveline also supplies the propshafts which transfer power from the engine to the rear axle and sideshafts, which transfer power from the rear axle differential to the wheels.

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