A new inline six cylinder has resulted after Scania and Cummins with a new fuel efficient engine. Cummins and Scania have been long-term partners in engine and component development. Technology shared includes turbos and high pressure diesel injection systems.
The new seven litre engine, the DC07, has low-rev, high torque characteristics and a fixed geometry turbocharger, and it uses only selective catalytic reduction (SCR) for the exhaust gas after-treatment to meet Euro 6 compliance.
“The Scania DC07 is based on a well-known and robust six-cylinder engine,” says Anna Wingren, Assistant Chief Engineer, Scania R&D. “We’ve added Scania’s accumulated knowledge about advanced diesel engines, including our own technology and developed a Scania platform offering unparalleled characteristics for applications where a torque level of up to 1,200 Nm is required.”
The new engine is aimed at operators in urban and regional distribution, and civil and urban infrastructure maintenance. Weight is often a challenge in these types of applications and is also usually the main reason why these operators have bypassed Scania solutions in the past.
Starting from a design from Scania and Cummins with a new fuel efficient engine, the existing basic engine has been comprehensively developed further by Scania, including all of its monitoring and control systems. In addition, it has been provided with a completely new turbocharger installation, and the new version uses Scania’s exhaust gas after-treatment system, developed in-house, with only SCR, to reduce NOx emissions.
The new engines offer their best torque from revs as low as 1,050 rpm all the way to 1,600 rpm. This provides good driveability and, because of the low revs, the potential to save fuel, and like its larger siblings it works on thin low-friction oil, which contributes to the low fuel consumption.
“With its 3.07:1 final drive ratio, the engine is turning over at just 1600 rpm at 100 km/h, which is far lower than most comparable motors from rival brands in this segment,” said Dean Dal Santo, Director of Truck Sales at Scania Australia.
“The fuel savings this will return on longer freeway journeys can easily be imagined, as will the increased driver comfort and reduced fatigue as a result of the lower levels of noise, vibration and harshness from intruding into the cabin.”