Quote:
Originally Posted by fan
From a current thread ('Characteristics of the 1.4l engine'), the gas engine of Volt will deliver 100hp. For this type of car this may be decent as a maximum power output (even when battery is depleted).
I don't think it is wise to assume that a driver of a Volt would like to behave accordingly to Volt's 'will' - When the battery gets to 30% must go home slowly and recharge the battery.
The car may know that is close to home, but the driver may get an urgent call to get fast somewhere 100 miles away. This car should allow him to get decent there.
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The Volt 1.4 engine will have very different performance characteristics from any conventionally applied 1.4 in GM's range. It will be maximized for fuel efficiency in static operational bands. The battery will provide the power for dynamic response.
I don't know where you are getting this idea that the Volt behaves according to the Volt's 'will'. And that after it reaches or goes below it's charge sustain level (GM advises currently at 35%), and is close to home, that it goes slowly?
What I stated is that when close to home it will not bother to recharge back up to it's charge sustain level. That has no correlation with going slowly.
Quote:
Originally Posted by fan
So, I guess that when the battery is depleted and the car is under stress (driver in a hurry), it should be possible to rev the engine to get those 100 hp or more to power the emotors directly through the generator. Normally the engine would run at optimum rpm deliver less power to the generator.
Also, the 'power of the car' should be limited to this maximum power the gas engine can deliver with or without charged battery. It wouldn't be safe to have the car behave differently depending on the state of the battery. Like making a pass and especting to get 6s to 60mpg, but since the battery is down, this time you get only 12s and best wishes.
And since it's an electric car, people would be glad to get 9s to 60m and 100 mph speed, so no need to conceive complicated and dangerous scenarios for various power outputs of the car.
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GM has not published what the operational power bands will be for the ICE although 3 discrete levels have been mentioned along with the ICE's ability to transition smoothly between these so as not to suddenly surprise the passengers.
As to behaving differently after the charge sustain level is reached and the ICE is tasked: That was only my view when we all still were under the impression from GM statements (about 0-60 in 5 secs) so that I insisted that the ICE could not maintain these performance levels. And that therefore this would have to result in some noticeable performance drop.
However, now that GM has backed off hugely from it's performance claims for the Volt in electric only mode, I have stated clearly that I now believe it's performance will be adequate but not more than typical economy cars both in electric only mode as well as thereafter in ICE charge sustain mode as I previously held.
My views based on the information we knew then were correct and the others view that the Volt would have high performance at all times were wrong. Now my adjusted view, based on the lasted information, is also correct and still the others views are wrong.
Perhaps you can now explain that to the others on this thread....
