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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: Z Engine creates a buzz

Another new engine attracting huge crowds at this year’s Engine Expo event was Aumet Oy’s 4/2-stroke car diesel powertrain. Tests have already shown that Aumet’s innovative unit, called the Z Engine, has very good levels of efficiency at part loads, while NOx levels are minimal. Meanwhile, latest simulations with a special modification of Diesel RK have shown that it is possible to have an HCCI combustion in the Z engine at all loads. “This is because in the Z engine the TDC temperature lowers when the load increases,” said a company spokesperson. “At part load the temperature is about 800ºK and at full load (BMEP of 25) about 700ºK. The ignition is triggered about 10°ATDC with an ignition injection to the hot isolated combustion chamber in the middle of the piston. This activates the cool flame and thus the Z engine uses the cool flame as an amplifier to trigger the hot flame.”
 

17 June 2009


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