Focusing on fuel efficiency and durability, Volvo Trucks has made key improvements to the D13 VGT engine including: Piston Design: The improved seven-wave piston optimizes air and fuel mixture ...

the Volvo Group unit said. Powertrain enhancements account for nearly 30% of the fuel efficiency improvement, in accordance with VTNA launching a new engine, the D13 VGT diesel. The updated VNR ...