Torque Graph

Colorado

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Jun 24, 2024
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Lone Tree, Colorado
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2024 Toyota Land Cruiser
I'd read that the LC get's maximum torque at around 1,700 rpms. That didn't seem right as I believed that, for gas engines, torque equalled (HP x RPMs)/5,252. I took that to mean that torque and HP are always equal at 5,252 RPMs, which is a lot higher than 1,700 RPMs.

But as a lot of the LC's torque is provided by the electric motor, and electric motors deliver 100% of their torque at 1 RPM, everything is different. I needed to re-educate myself.

So I looked up a torque graph for the LC on Google and found a comparable one on MotorTrend, https://www.motortrend.com/news/2024-toyota-tacoma-i-force-max-hybrid-engine-details/. It is for the Tacoma's iForceMax engine. Here is the graph:

Torque-Curves-scaled.jpg
 
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I found this interesting. Look at how the torque descends from 1,700 RPMs until, at 5,252 RPMs, it is at about 326, the HP of the gas engine.
 
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The 5252 is merely a conversion factor and has nothing to do with an actual RPM. Substituting 9550 for 5252 in the same equation will give you the torque as measured in newton-meters instead of pound-feet.

Because of this, though, it just works out mathematically that at 5252 RPM, the HP and Torque (in pound-feet) will be equal. The same would be true at 9550 RPM where the Torque (in pound-feet) and horsepower would similarly be equal. Good luck testing that! 😁😁
 
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