The value of prius is easy to see as many people have pointed out already. If in-your-face hybrid look is all it takes, then the original insight would have been the best-seller (to some extent even the GM hybrids, with their prominent hybrid logos).

He is supposed to be an economist. If this is what a typical economist think like, no wonder we a re in a mess.

]]>Prius’ gas engine makes 105 lbs-ft torque and the electric traction motor makes 153 lbs-ft.

You can’t add them up because only 72% of the gas engine’s torque goes out to the wheel through reduction gear (3.267 final gear ratio). The rest turn the generator (*).

The electric traction motor goes through two reduction gears. It first goes through 2.636 SRU and then the final gear.

Total torque at the wheel = (105 x 0.72) + (153 x 2.636) x 3.267 = 1,565 lbs-ft

EVs normally has about 10x final gear ratio. If the Leaf’s motor torque is around 200 lbs-ft, we are looking at around 2,000 lbs-ft at the wheel.

(*) – Prius is 72% parallel and 28% series because the torque from the gas engine always split in this ratio. The amount of power that it splits depend on the speed of the generator (power = torque x rpm x constant). The less power the generator takes away, the more it goes to the wheel mechanically (think Civic hybrid). The more electricity it generates, the more it acts like the Volt.

]]>“The Leaf will double the torque of the Prius (pound-feet).”

Do you have source on it? Wonder if that’s at the wheel or you are just comparing from traction motor.

]]>“The Leaf will double the torque of the Prius (pound-feet).”

Do you have source on it? Wonder if that’s at the wheel or you are just comparing from traction motor.

]]>