Performance upgraded Scania DC16 118 650HP engine
Truck configuration, original horsepower and other details
The truck in question is equipped with a Scania DC16 118 650HP engine, with a displacement of 16.4 liters, capable of delivering a maximum power of 650 horsepower (479 kW) at 1900 rpm and a maximum torque of 3300 Nm between 950 and 1350 rpm. This engine complies with Euro 6 emission standards. The gearbox used is a GRSO925R manual gearbox, the same as that used on the 730. The engine computer is an EMD1, and the EGR valve system is not used . The truck is equipped with a fixed-geometry turbo for improved fuel efficiency, as well as an SCR aftertreatment system.
Optimization on R650, remaining within standards and tolerances
Optimization on R650 is to improve the performance of this Scania DC16 118 650HP. Our team of heavy-duty vehicle programming engineers carried out a stage 2 on this truck with the aim of increasing power and torque while reducing fuel consumption. This optimization was made possible thanks to a free exhaust which allowed us to develop a tailor-made program to maximize engine availability.
The DC16 118 engine is an engine that optimizes rather well. Its V8 allows significant gains by playing on injection times, torque limiters, boost pressure, IAT (Air Intake Temperature), engine speed, turbo pressure, etc. The gearbox speed as said above is that of the 730. It already cashes from origin on the 730, 3500Nm and up to 4000Nm when we optimize. In our current configuration, given that we wanted to remain ‘soft’, we have voluntarily limited the torque to 3800Nm.
In the end, it is no less than 780hp and 3800Nm of torque (estimated by our calculations). It turned out that our road test was very conclusive with a totally different driving experience from the truck in its 650hp version.
Optimization of the use of exhaust valves
The ability to use exhaust flaps on a truck can provide many benefits, especially in terms of sound. Heavy-duty enthusiasts can appreciate the characteristic sound of a V8 at rallies such as the 24 hours of Le Mans trucks.
We have developed a solution for using exhaust flaps without displaying faults on the dashboard. We achieved this by reprogramming the EMS (EMD1) and modifying some emission control parameters, such as NOx management and AdBlue injection.
Using this solution, when the switch is in the ON position, the CAN signals from the EEC3 emissions control unit are no longer sent, which allows the exhaust flaps to be used without displaying any faults. However, when the switch is in the OFF position, the truck uses its original exhaust system and it fully complies with current regulations.
Conclusion :
In conclusion, optimization on R650 and the use of a deactivatable SCR system are very interesting options for owners of trucks equipped with a Scania DC16 118 650HP engine. These improvements help increase power, reduce fuel consumption, comply with emissions standards, provide more flexibility and improve the driving experience. These improvements are made by respecting the standards in force and by having an easy and practical tilting system.
