I have never seen a 3.6R torque in the real world that looks like the one shown. I am part of a tuning group and I have seen quite a few 3.6R that are tuned, even some with headers. They are not a flat, at least not at wheels they are not.Is the effective torque at the wheels will be flat like that?
No, I was in (effectively) the same training, just at a different location. 277 lb ft at 2,000 RPM on up, and flat, as opposed to the surge peak of others.That's a reading directly from the flywheel, no doubt. From the flywheel thru the CVT is another story, may not be flat like that. I thought maybe since you're in the training, they may provide something verbally in regards to the actual performance at the wheel.
So can you dumb this down for me as a lay person? Is a flat torque curve better on the 3.6R? Is that sudden surge at lower RPM's better on the Ascent?
A flatter torque curve gives a more linear increase in power (smoother) as the revs increase. Remember, torque is per rev.So can you dumb this down for me as a lay person? Is a flat torque curve better on the 3.6R? Is that sudden surge at lower RPM's better on the Ascent?
Glad you grabbed the shot! I lost the pic I had, and people kept telling me it wasn't flat from 2,000-4,800.I took this picture at a training a couple weeks ago and asked if I could share it. Then I completely forgot about it
Don't know why it is sidways
Here it is:
Not you... I interact with a ton of people all over the place on many car (and computer and Star Trek and filming) related things, and I've been flat out told it's definitely not flat, and likely dies off very quickly.Actually, I was confused. If it's flat, then it's flat.
Keep in mind the Ascent has no set gear ratios under numerous circumstances where torque would be needed. When I pushed hard uphill, it acted very much like a CVT, finding the engine's sweet spot and slowly and smoothly sliding the gearing in whatever direction was appropriate - no shift points. That makes a lot of sense for when the car is under load, whether due to hill climbing at full throttle or due to towing.Since the Ascent has 8 gear ratios, here are the torque values (assumed no loss) if engine is @2000rpm+:
GEAR RATIO - Torque at gear @ gear speed (traveling speed)
Gear 1 (3.227) - 893ft-lbs @ 619rpm (12mph+)
Gear 2 (2.100) - 581ft-lbs @ 952rpm (18mph+)
Gear 3 (1.535) - 425ft-lbs @ 1303rpm (25mph+)
Gear 4 (1.191) - 329ft-lbs @ 1679rpm (32mph+)
Gear 5 (0.933) - 258ft-lbs @ 2143rpm (42mph+)
Gear 6 (0.749) - 207ft-lbs @ 2670rpm (52mph+)
Gear 7 (0.602) - 166ft-lbs @ 3322rpm (65mph+)
Gear 8 (0.467) - 129ft-lbs @ 4282rpm (84mph+)
values were calculated
The 3.6R would drop in ft-lbs as the RPM increases. For Ascent in 1st gear, you get 893ft-lbs of torque from 2000-4800rpm.