2016 Tacoma Dyno Torque HP Crve

Looks an awful lot like the 2GR-FSE torque curve to me. Pretty much the same engine minus VVT-iW (it has D-4S.)

 

No it isn't .BUt it does look like a rendition of how engine speed, load are related to the the injection system

 

yep. the injection mapping is interesting.

 

I agree.....

 

Yes..it does look like integral calculus and the area between two curves.

 

Sorry, should have been more specific. My 02 has a manual. 3.4 liter 4x4 TRD OR.

 

Bump.

No one has done a dyno on the truck?? I want to post it on the "This truck is going to bury the GM twins" thread!!

Mike Sweers and half a dozen Toyota reps say that the tranny is way more efficient than the 2nd gens.

I would like the whp and wtq

 

In reference to that little dip in the TW cure... Is that to say nothing happens between 2500 and 4000 rpm?

 

The meaning of that section is that you basically get the same amount of push.

Let's say that the truck has only one gear.

When riding that gear 1k-2.5k RPM you will feel a pull that gets stronger as your RPMS increase. 2.5k-4k, you will feel a constant pull. 4k+ the engine will have a huge pull and haul a$$.

Through out the whole gear, you will always be under acceleration.
The torque curve tells you how strong the pull you will get. The HP determines how fast you can get through that pull.

6+ years teaching/learning physics.

 

Thanks for the explanation! But since the torque does not increase as much as it does before and after that point, Wong acceleration in that range be less, of at least not linearly increasing?
(Note: by acceleration linearly increasing I mean velocity exponentially increasing, just with a smaller rate of change you could say?)

 

Take it from this geek.

http://youtu.be/iXAbCpqizok

He is correct except the comment that says that you have to double the diameter of the gear. For his explanation to hold, the circumference of the gear has to be twice the circumference of the crank shaft.

To answer your question, the rate of acceleration will decrease. In a curve like that, you really won't notice it. If it would have a huge drop-off you will notice it.

More food for thought, a transmission also plays with the torque like in the video to get you the acceleration that you want. So going through gears normally will get you a constant or increasing acceleration. And the ECU maps that out for your preference and style of driving.

When people say they want a high and flat torque curve, that's what they mean.

 

Nice video, but I can't stand that the narrator keeps referring to rpm's, rather than rpm. Revolutions per minutes???

Thanks for posting it......................... Frank

 

Theoretically, just having one more gear and fewer moving parts would make it more efficient.

 

WTF are you talking about? The Dyno is not measuring the transmission! Please leave the technical analysis to others who know what they are talking about.

 

Time out.

What are the basics of a dyno?

This dyno curve, like 95% of dyno curves are measured at the wheel.

So when running a dyno, you are measuring the power and turn force of your engine at the wheels.

The transmission and diff. deliver the power coming to the wheels.

Not all transmissions are built the same. Obviously when running a dyno, you do one gear.

Transmissions and differentials add drag to the power delivered.

Looking at the curve from the screenshot, the transmission takes up a lot of power to drive, friction gear weights... Etc. So yeah, this transmission on the Colorado is a piece of ineffective shit.

So before you start to tell me what I do and don't know. Don't mouth off and call me a dumb ass.

 

Anyone ever figure out if ECT Normal is bias to Atkinson cycle and ECT Power bias to Otto cycle?

 

2GR gets really good torque at 2k rpms and while it dips a little, b/t 2k and max torque, you should be seeing at least 250-260ft/lbs at the crank. I don't think the avg driver will notice much diff between the 1GR and 2GR after 2k rpms. Looks like b/t 1-2k RPM's is where the torque curves really differs b/t these two engines.