By mmillikin Volvo Trucks North America’s new VNL series delivers up to 7.5% improved fuel efficiency when spec’d with Volvo’s available D13 Turbo Compound engine (D13TC). (Earlier post.) Designed for customers with long-haul, steady-speed operations, the 13-liter Volvo D13TC utilizes turbo compounding technology that recovers energy typically wasted through the exhaust, converting it into useable mechanical energy that is transferred back to the engine.
By employing a secondary exhaust turbine downstream of the main turbocharger, the normally lost energy is routed to the flywheel, recovering as much as 50 hp and helping to improve fuel economy by up to 6.5% when compared
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