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Old 01-06-2008, 08:48 PM
PineywoodsPete PineywoodsPete is offline
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Real Name: Pete Berry
Hybrids: '06 Highlander 4Wi Standard, 34,000 mi
Posts: 56
Default Re: How much max power really goes to the rear wheels?

[quote=Don R;156435]The rear electric motor develops 67 hp and 96 foot-lbs of torque. That 96 ft-lbs is available all the way down to 0 rpms because electric motors develop full torque at stall unlike a gas engine. This is enough torque to wildly spin the rear tires in a deep snow condition if not moderated by the traction control.



Although the rear motor is theoretically capable of developing 67 HP and 96 ft-lbs torque, the HiHy's traction battery is a 45 KW/60 HP max sustained output unit, and this is the maximum electric assist possible between the two motors. Thus the total HP rating of 268, with 208 delivered by the engine.

I suspect the reason the front motor's capacity is so large (123 KW/165 HP) is for reliability as it is used so frequently. And maybe this makes its ability to start and spin the ICE up to speed quicker when demanded, with a transient battery draw of more than 45 KW.

Pete
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