Range Rover and Porsche Panamera go hybrid

Land Rover is debuting its Range_e, a diesel hybrid plug-in prototype, at the 2011 Geneva Motor Show in March. According to the British car manufacturer, the technology-packed Range_e is one of several working prototypes currently being developed at Land Rover's design and engineering centre in the UK.

The Range_e is based on a Range Rover Sport and features a 3.0-litre TDV6 diesel with an eight-speed ZF automatic transmission. Matched with a plug-in parallel diesel hybrid system it offers a premium SUV that can run as a pure electric vehicle. The 'Range_e' is the first capable 4WD model from Land Rover to achieve 89g of CO2. It has an EV range of 20 miles, a top speed of around 120mph and a range of 690 miles.

Porsche is also unveiling in Switzerland a new hybrid model, its second, the Panamera S Hybrid. According to the German sports car manufacturer, the new Panamera model produces 380 horsepower with fuel consumption of only 6.8 L/100 km on the New European Driving Cycle (NEDC).

Porsche calls its Panamera S Hybrid the most fuel efficient Porsche of all time. Optional low-rolling-resistance tires developed especially for the Panamera help this hybrid performance sedan deliver its NEDC fuel economy figure. But even with standard performance tires, the Panamera S Hybrid's fuel consumption is a low 7.1 L/100 km. Official EPA fuel economy estimates will be available closer to the car's on-sale date, Porsche states.

The Panamera S Hybrid sets new standards in terms of Porsche performance as well as hybrid efficiencies, the manufacturer claims. The S Hybrid accelerates from 0 to 60 mph in just 5.7 seconds and has a top track speed of 167 mph (270 km/h). Its range in purely electric mode is approximately one mile, with electric-only acceleration possible up to just over 50 mph (85 km/h).

The Porsche parallel full hybrid system also reduces consumption at high speeds thanks to its 'sailing' or coasting mode. When the driver lifts off the accelerator at normal highway cruising speeds, the gasoline engine is completely switched off and disengaged from the drivetrain by a decoupling clutch. This eliminates the combustion engine's drag forces and braking effect in the interest of lower resistance, fuel consumption and emissions. As soon as the driver presses the accelerator, to pass another vehicle for example, the gasoline engine smoothly starts within fractions of a second and engine rpms are increased to match the current vehicle speed. It does this seamlessly thanks to the Hybrid Manager, which also helps the Panamera S Hybrid accelerate dynamically in gears at higher speeds much like a conventional Panamera.

The same gasoline engine/electric motor combination that has already proven itself in the Cayenne S Hybrid drives the Panamera S Hybrid. A 3.0-liter supercharged V6 engine delivering 333 horsepower is supported by a 47-horsepower (34 kW) electric motor. Depending on driving conditions, either drive unit can operate independently or together to drive the rear wheels. The electric motor, which also serves as the car's generator and starter, combines with the decoupling clutch to form the compact hybrid module located between the combustion engine and the transmission. The electric motor is connected to a nickel metal hydride (NiMh) battery that stores electric energy recovered from braking and other driving situations. The transmission is the same eight-speed Tiptronic S fitted in the Cayenne models, with a wide range of gear ratios.

The Panamera S Hybrid has an even higher level of standard equipment than the V8 Panamera S, Porsche says. Adaptive Air Suspension with the Porsche Active Suspension Management (PASM) adaptive shock absorber system, Servotronic variable-assist power steering and a rear wiper have been added to the list of standard equipment. Other standard features include Porsche Communication Management (PCM) with navigation, the universal audio interface to connect an external audio source such as an iPod or a USB stick to the PCM system, and Bi-Xenon headlights. Inside, this new model also features an innovative display that provides the driver with relevant information about the status of the vehicle's hybrid drive systems.