Juddian:
edd1974:
Never heard of eco roll
Is.it just another name.for adaptive cruise control?
I used have that on my daf found it was a good idea when running up.to ScotlandEco roll is sometimes known as ‘efficient cruise’, some lorries can have efficient roll as well as eco/efficient cruise, some don’t, some lorries you can turn these things off via the dash menu some you can’t.
Adaptive cruise is something else again.E/Cruise is really what is causing the issues, it uses GPS to a great extent to take advantage of terrain, cutting power before the crest of a hill allowing momentum to carry the vehicle over the top without wasting fuel. A fine design on its own and no problem at all on quiet roads, but our roads are generally too bust to take full advantage, if the vehicle slows by up to 8kph then vehicles you might be restricted to 3kph less than you will start to overtake you, there might be 4 in a bunch, so the elephant racing starts, because one of maybe two will get past but by the time the third one is alongside the ecorolling wagon will be up to full speed again the other side of the hill, we see this scenario played out hundreds of times a day.
E/roll is slightly different (but a particulare vehicle may have only eco roll not eco cruise as well hence the confusion in wording), if you turn off E/cruise but leave E/roll on, the vehicle won’t slow down as described, but it will allow the vehicle to take advantage of slipping into Neutral and coasting (if left in auto, using manual mode may stop this happening) for considerable distances, something lorry drivers have been doing decades before this electronic garbage was dreamed up, but was always frowned upon before as the vehicle is out of gear and liable to runaway, not sure how they’ve got round this re type approval but they have.
Adaptive cruise uses the radar sensor on the front to allow the vehicle in front to set the pace and the vehicle using AC to follow, the vehicle using Adaptive Cruise to maintain speed and distance from said vehicle in front.
I’m not a user of A/Cruise and wouldn’t use it myself, though others do and thats fine if it suits you, its not for me personally, doubtless some sarky little twerp will be along soon to say something disparaging in personal insults about those of us not sold on all of this tech.
I think the argument against coasting in neutral on older trucks was if going fast you couldn’t rev the engine enough to re-engage a gear with a constant-mesh or crash box?
That would have been correct then, but doesn’t apply (mostly) now.