Jaguar and Land Rover has committed £800 million to reduce vehicle emissions

November 24th, 2010 by Mike Richardson

With increasing awareness of the contribution of road transport to CO2 emissions, vehicle manufacturers are focusing an unprecedented level of attention on measures for improving vehicle efficiency.

These measures include improving aerodynamics; reducing other vehicle level parasitic losses; weight reduction achieved with efficient high technology design methods combined with lightweight materials such as aluminium; and improvements to the efficiency of the engine and transmission.

Hybrid technology is another way of improving vehicle efficiency.

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Every time a vehicle is accelerated or slowed down there is associated energy consumption. The engine consumes fuel under acceleration and the brakes dissipate energy as heat during braking.

Hybrids work by recovering and storing the energy generated when slowing down or braking a car and re-using this energy to speed up the vehicle when the driver accelerates. In an electrically based hybrid this is achieved by combining the conventional engine with an electric machine. This machine is capable of operating both as a motor and a generator. A special battery also included and is used to store recovered energy for re-use.

Another significant waste of energy is that of running an engine when it is not required. Basic stop-start systems, which stop the engine when the vehicle is stationary, are already well established in the marketplace. These systems make a significant contribution to emissions reduction in urban stop start traffic.

Hybrid technology can extend the operating envelope of this engine stop start function so that it is able to operate when the vehicle is moving, since the electric machine is able to propel the vehicle whilst the engine is switched off.

These measures are broadly grouped under the heading of vehicle electrification.

Jaguar and Land Rover is very active in the field of vehicle electrification, with numerous significant activities and projects either already in the marketplace or in the development phases. The company has already committed more than £800m to environmental innovation, with a strong focus on low-carbon and sustainable technologies in the drive to reduce tailpipe emissions.

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Research into hybrids and the wider aspects of vehicle electrification are integral to Jaguar Land Rover’s advanced product engineering activities.

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Examples of work already completed and still on-going includes stop-start systems (first launched in 2009 on the 2.2 litre TDi Freelander); collaborative research on plug-in-parallel and range extended vehicles, a percentage of which is in association with other partners and the Technology Strategy Board; and of course hybrid electric vehicles, which Jaguar Land Rover will bring to market over the next few years.

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Our work in these areas is supported by working prototypes and advanced concepts – such as the stunning C-X75 sports car, which was unveiled at the end of September at the Paris motor show and has just recently been on display in Los Angeles.

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