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Mercedes-Benz unveils its revamped G-Class


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


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? 


Denso reveals first aircon system with an ejector

Denso has developed the world’s first passenger vehicle air conditioning system that uses ejector technology. The ejector, which is a small refrigerant injector, contributes to an overall reduction in power consumption, and the will be installed on the new Toyota Prius.

Right: The Prius will feature Denso's innovative air conditioning system

“With increasing demand for technologies to reduce carbon dioxide emissions and preserve the environment, Denso has been accelerating its efforts to develop more efficient air conditioning systems,” said Akio Shikamura, managing officer responsible for Denso's Thermal Systems Business Group. “The new air conditioning system reduces the compressor’s power consumption by up to about 25%, compared to conventional car air conditioning systems, and thus contributes to fuel savings.”

Much of the energy consumed by a vehicle’s air conditioning system is used by the compressor to compress the refrigerant. In conventional air conditioning systems, an expansion valve is used to reduce the pressure of the refrigerant before passing it through the evaporator to cool the air. Denso’s innovative new system uses an ejector instead of an expansion valve. The ejector recovers expansion energy, which was previously lost in the expansion valve, and converts it into pressure energy. This, reduces the compressor’s workload and helps reduce the air conditioner’s overall power consumption.



22 May 2009


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