I-Shift is designed to save fuel. First of all, the internal energy losses are low – actually lower than on manual gearboxes. But it’s the electronics that really make the difference. When driving in Economy mode, every gearchange is timed precisely, to let the engine work at its most efficient rpm range.
And then there’s I-Roll. It’s a unique feature used when driving downhill, automatically disengaging the engine to make use of the truck’s momentum instead of fuel. The result? Up to 2% lower fuel consumption.
Remember your route? I-See does too.
I-See literally takes the intelligence of I-Shift one step further. It’s a groundbreaking software feature that takes advantage of the integrated GPS to memorise the topography of the road, and upload this information to a central database free for all trucks to use.
This way, I-Shift can not only choose the best gear at the time, but also prepare for the upcoming topography. It’s like having an experienced co-pilot, who knows every bit of the road by rote. I-See saves up to an additional 5% fuel (when I-Cruise is engaged the whole time).
Learn more about I-See.
How it works.
It may seem strange. Beneath the surface of I-Shift, the hallmark of modern transmissions, hides an old-school unsynchronised manual gearbox. (Hence the compact design and low internal losses.) But of course there’s much more to I-Shift than that. The secret lies in the intelligent electronic control unit. It’s responsible for controlling the pneumatic system that handles the clutch and shifts. By constantly receiving information about vehicle speed, acceleration, weight, road grade, torque demand and more, it can carry out every shift with extreme precision. It also communicates closely with the engine, which in turn adjusts revs and engine brake effect for fast and comfortable shifting.