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Mercedes-Benz unveils its revamped G-Class

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The all-new G-Class makes its public debut at the Detroit auto show in G550 form. Completely redeveloped and fitted with a 4.0-liter V8 biturbo gasoline engine offering 427ps and 450 lb-ft of torque at 2,000rpm to 4,750rpm, despite near-identical looks to its predecessor plenty has changed for the Mercedes-Benz SUV.


Ford’s F150 pickup gets its first diesel motor

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Developed by the powertrain team behind the 6.7-liter Power Stroke engine for super duty trucks, the all-new 3.0-liter V6 Power Stroke unit promises 250ps, 440 lb-ft of torque, and an anticipated 5175kg of towing capacity.


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In light of Fisker's solid-state battery breakthrough and claims of a one minute charge time, will this electric vehicle technology development kick-start mass BEV uptake? 

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SHOW NEWS: Piston deactivation engine takes centre stage

The world’s first piston deactivation engine (PDE) has made its debut at Engine Expo 2012. Joseph Scalzo, from Scalzo Automotive Research, unveiled the concept at the Messe Stuttgart, and has been kept busy throughout the day with visitors from all over the world wanting to know more about the technology.

Not to be confused with cylinder deactivation technology, PDE, says Scalzo, represents a much better way of achieving substantial fuel economy at a much lower cost using existing manufacturing processes, rather than high-cost hybrid technology.

At Engine Expo 2012 Scalzo revealed a prototype 1.7-litre, three-cylinder PDE that has run successfully on one, two and three pistons. Unlike cylinder deactivation engines, where the pistons still operate within the cylinder, PDE stops the pistons from moving and they are ‘parked’ until required. Scalzo says this substantially reduces overall engine friction and pumping losses and, at the same time, enables the operating piston(s) to work with a much higher open-throttle efficiency.

Scalzo’s prototype engine has been based on one half of a GM six-cylinder, 3.6-litre Alloytec unit. It uses part of the cylinder block with pistons, and the complete head and part of the manifold, thus effectively creating multicapacity engines of 567cc, 1,130cc and 1,700cc.

13 June 2012


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