Volvo Group Introduces Heavy-Duty Hybrids

The Volvo Group has unveiled a prototype hybrid system for heavy-duty vehicles (buses and trucks) which promises fuel savings of up to 35%, depending upon usage. The company is targeting series production of the hybrid vehicles by 2009.

Designated I-SAM (Integrated Starter, Alternator, Motor), the parallel hybrid system comprises a combined starter motor, drive motor and alternator fit between the clutch and the I-Shift automatic transmission. Effpower bi-polar lead-acid batteries are recharged by the diesel engine and via regenerative braking.

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