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10-4-2008 09:39

Peugeot has been showing diesel hybrid concepts at auto shows for the past several years, and the latest is the new Prologue HYmotion4. Unlike the previous versions that were based on the 307 and 308 C-segment hatchbacks, the Prologue is an all-new vehicle. Also unlike the previous concepts that used a hybrid system where the engine and electric motor ran in parallel on the same axle, this one uses the company's new HYmotion4 system like the RC concept we showed you earlier today. And unlike the four-door coupe RC, the crossover-bodied Prologue flips the powertrain arrangement front to back. The CUV has a 163-hp 2.0L four-cylinder turbodiesel twisting the front wheels while a 27 kW motor sends torque to the rear axle. The combined output when both the diesel and motor are running is 200 hp with 221 lb-ft going to the front wheels and 148 lb-ft to the back. Like the RC concept, front-, rear- and all-wheel-drive modes are available. Since rear-drive is electric only and the motor output only 27 kW, that mode is only available up to 30 mph. The diesel engine up front sends power through an automated 6-speed manual gearbox that allows for manual shifting. Peugeot also claims the electric motor is activated during shifts to provide uninterrupted power flow and smoother operation. Whereas the RC concept uses lithium-ion batteries, the Prologue uses a cheaper nickel-metal hydride battery pack sitting under the rear seat. Altogether, the Prologue is claimed to achieve 57.4 mpg (U.S.) with carbon dioxide output of 109 g/km.

2008 Paris: Peugeot Prologue HYmotion4 diesel hybrid concept

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