2007 LA Auto Show videos: Porsche Cayenne hybrid, Volkswagen Space Up!, Chevy Silverado hybrid
Feel like you're missing all the good stuff from LA? Perhaps some videos will ease the pain. The video above shows Porsche representatives at the 2007 LA Auto Show talking about hybrids. As we just reported, Porsche says their hybrids will go 75 MPH on battery power. Below the fold are two videos, including one that looks at the modern, clean design of the Volkswagen Space Up! concept. The second video is of GM's green giant (ho, ho, ho!), the Chevy Silverado Hybrid. Stay tuned, as we have many more video round ups from the 2007 LA Auto Show on the way.
[Source: YouTube]
Reader Comments (Page 1 of 1)
rgseidl 3:30PM (11/15/2007)
What Porsche CTO Wolfgang Duerheimer actually says in the first video is that the electric motor in the Cayenne Hybrid's drivetrain can be used at speeds up to 75mph. This does NOT mean the vehicle can sustain that speed using electric power alone, merely that the motor can still deliver some boost assist.
Beyond that vehicle speed the rotor of the permanent-magnet synchronous motor spins too rapidly even when the transmission is in its highest gear. Regular PMSMs have fixed field strengths and therefore near-constant torque across their speed range. However, beyond rated speed, operation is not possible due to excessive mechanical and thermal loads on the device.
Siemens VDO has presented a PMSM with additional coil windings on the rotor that permit changing the remanence of the permanent magnets on the fly. This permits operation of the motor at higher speeds, albeit at reduced torque - rated power is the limiting factor. However, Porsche is not using this technology in its hybrid drivetrain.
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Lascelles Linton 3:49PM (11/15/2007)
Rgseidl, I will e-mail Sam.
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Reeta Za 7:03PM (11/20/2007)
Fast Lane Daily has an exclusive inside look at the LA Auto Show. check out their video with highlights of the Nissan GT-R presented by Karan Singh of StreetFire.
http://www.veoh.com/users/carvideos
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