Prius in the snow?

Tom: The Prius can be really terrible in snow and mud. You do not want to get the front wheels mired in. I had an unfortunate encounter in February with a terrible muddy, rutted road in New Hampshire with my 2006 Prius. I almost got really stuck, but I did finally manage to back the car out of the muddy area. The Prius reacts to being immersed in mud in an unusual and not desirable way. When the wheels were really mired deep in mud, the car simply refused to put out power going forward. Really, the ICE would not rev up at all. With the gas pedal floored, the ICE was barely at idle; it would not propel the car at all. It was not that the wheels were spinning and the car would not move, the problem was that the car would not put out enough power to even spin the wheels. However, going backward, which is done solely on electric power, the car would put out enough power to spin the wheels, and I could modulate power off and on so as to rock the car and get it moving. I was able to back the car through muddy areas that the car would not go through in the forward direction. I got out of this awful mess by backing up for about 1/4 mile.

This was one trip that I wish I had taken in my Camry instead of my Prius.

Two possibilities. Possibility One: if you need really maximum torque from the ICE delivered to the PSD Planet-Carrier, then MG-1 is overwhelmed, and cannot put out enough counter-torque through the Sun-Gear to allow this high torque to be delivered to the Planet-Carrier, and so the computer throttles back the ICE.

Possibility Two: The Traction-Control algorithm senses that you are trying to spin the front wheels faster than the rear wheels and the computer says "No, you can't do that." and so it shuts down the ICE power.

P.S - After I was out of this mess, everything worked perfectly normal. And - Wow, did the car ever need that wash of hot, pressure-spray of soapy water sprayed all over the undercarriage, wheels, engine and brakes.

Dick

"tjq" wrote in message news: snipped-for-privacy@n59g2000hsh.googlegroups.com...

The wheels aren't allowed to spin like that in order to protect the electric motors from over-revving.

Wow! Thanks for posting this, Dick. Would have never thought about it until, like you, got stuck.

- Piper Be yourself. Everyone else is taken.