Renault Trucks has reduced the fuel consumption and CO2 emissions of its T, T High, C and K ranges with new DE11 and DE13 engines.
The new 11.0- and 13.0-litre diesel units feature Wave Piston technology. By redirecting the flames inside the combustion bowl, this solution allows better use of available oxygen and therefore better combustion. The engines are also equipped with new injectors with improved precision, which are adapted to the new combustion.
To improve efficiency, Renault Trucks has also focused on reducing frictional losses: connecting rods, pistons and the crankshaft have been redesigned and crankcase gas control has been optimised. A new high-performance ball-bearing turbocharger with improved response time and a variable flow oil pump combined with low-viscosity oil have also been developed.
Renault Trucks has also opted for an optimised post-treatment system and a new engine control unit.
For optimum performance, the Renault Trucks T, T High and C can be fitted as an option with the DE13 TC engine, featuring Turbo Compound technology, which provides further fuel savings without compromising manoeuvrability or commercial speed.
An additional turbine, positioned downstream of the turbocharger, converts the residual energy contained in the exhaust gases into mechanical energy and transmits it to the crankshaft in the form of additional engine torque.
Turbo Compound therefore allows higher levels of torque to be achieved at lower engine speeds. On the motorway, under cruise control, and when driving uphill, a constant speed can be maintained without the need to downshift.
The vehicles are equipped with the new generation Optidriver gearbox, which incorporates a new calculator, new control software and a new clutch actuator for smoother and faster gear changes.