Chevrolet Gets A Little More Aggressive With The Lines Of The Volt For SEMA
The Chevrolet Volt's Traction Motor good for +38% more power.
We already know that Volt’s traction motor can be uprated to 135 kW from the current 110 kW. This can be seen from the ELR's preliminary specs. Also noted in the ELR’s specs is the following:
"Total system power= 154 kW"
Cadillac ELR Features 154 kW Of Total System Power
What does total system power mean? Is it due to some fancy clutch work as so often is suggested where we use power link to add ICE power to the traction motor? No. It has been shown that, under full acceleration, the Volt stays in series mode all the way to 103 mph (reference via GM-Volt.com).
We know that the Volt is faster with the engine running. How is this done? The answer is that the Volt runs in series adding approximately 8% more power electrically from the generator to the traction motor. (see Robert Patrison data). We also have some tuners on forums that are showing increased levels of performance by hot rodding the ICE and are getting better accel times as a result.
Based on the referenced data and what the tuners are doing I am speculating that the 150 kW total system power is in the case of the engine running in series mode and supplementing power electrically to the traction motor.
This means that the Volt’s traction motor is good for 154 kW.
Torque Softening Does Exist in the Current Volt
Looking For SS Design Ideas? We Suggest Starting With A Look Akin To The Opel Ampera
I proposed torque softening in an article I wrote earlier. That proposal was somewhat controversial, with one of our residents proposing that it was just an inherent characteristic of the Volts A/C traction motor (Constant torque from zero speed).
While the inherent constant torque theory may be true, it is also possible that the constant level of torque could be programmed to some lower level than the maximum capability of the motor.
We have it from a reliable GM source (WOT) that torque softening does indeed exist (see comments).
ELR specs show +8% more torque than the Volt so we know Voltec is good for at least that much more.
How does 6.9 seconds 0-60 sound?
If we scale the Volt’s 8.5 second 0-60 time by the ratio of 110 kW/154 kW we get a 0-60 time of 6.1 seconds. However, it is not a linear scale with power. Torque is up by only 8% so we would not get 6.1 seconds we would get something higher - 6.9 seconds is an estimate.
So what do you readers think? Is a Volt Super Sport edition a good idea?
Do you think it would sell?
I say yes. Bring it on GM!
Editor’s note: We have no direct input from GM that they plan to offer a Volt Super Sport edition. However we do know that GM has the capability to increase Voltec power significantly based on ELR specs.