Jaguar Mk V - Mark V - Radiator Grill on 2040-parts.com

Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.

Toyota Auris Hybrid emissions cut to 84g/km

We’ve long believed that car makers better serve their customers by offering ‘Green’ options as add-ons to regular car models, and adding the hybrid option from the Prius to the Auris has seen Auris sales climb steeply whilst Prius sales drop off. There’s only so many buyers who want to shout their green halo from the rooftops, so incorporating green technologies in the regular range opens up far more possibilities for a sale. Now, with the Auris Hybrid sales growing by 69 per cent year on year in the UK, Toyota has had a play to make the Auris Hybrid even more efficient.

Vauxhall Adam 1.0-litre Ecotec turbo petrol

Vauxhall If there’s one thing the Vauxhall Adam has really been missing since it was launched back in 2012, it’s a modern engine line-up. Now that’s about to change with the imminent introduction of a new 1.0-litre Ecotec turbo petrol unit. Vauxhall is targeting best in class refinement for its new turbo petrol The new engine follows the recent trend for high efficiency three-cylinder designs, and will come in 90hp and 115hp variants with emissions as low as 99g/km CO2.