Wow, you do like to win an argument Paul. :-)
Where do they disagree with me? Plenty of us cover 50 miles in good weather and
even hypermile to 60 although I haven't.
What I will say is that the power module is a complicated bugger but works. It
normally runs on the main motor, then combines with the generator, using it as
a motor over 60mph or under hard acceleration to increase available power until
the battery reaches low when the gas engine runs and the generator links with
it to generate power.At high speeds with the gas engine the engine torque may
or may not be linked with the output shaft but that is never very clear.
At no time does the engine start to assist acceleration when in electric mode.
This link explains it well and there are youtube video's which are well worth
watching.http://www.autonews.com/assets/PDF/CA713241015.PDF
It is the best car I have ever owned and my last gas car was an M3!
Russ
From: Paul Dove <[email protected]>
To: Russ Sciville <[email protected]>
Sent: Thursday, 14 May 2015, 15:46
Subject: Re: [EVDL] Supercharging is not the way.
GM seems to disagree with you.
- Farah says that in his mind the Volt is unequivocally an electric car.
"The Volt is an electric vehicle...because for the first 40 miles you can get
full performance running on nothing but an electric motor until the battery is
depleted," he said.
- The Volt has three distinct motive forces in it: a large electric motor, a
small electric motor/generator, and a 1.4 liter engine. Up to two of those
three forces can be combined in select ways through the Volt's secret sauce
drive unit—given the road demands and state of charge of the battery—to drive
the vehicle.
- Only the large electric motor is capable of moving the car forward on its
own. The small electric motor/generator and the gas engine can only ever be
combined with one of the other motive forces to drive the wheels.
- Even when the gas engine is on and partially driving the wheels, it cannot
operate without electricity flowing to one of the other motors.
- The gas engine, under most conditions, will be used to drive the generator
and produce electricity, and will not be used to drive the wheels.
- There is no "direct" mechanical linkage between the Volt's gas engine and
the wheels, rather there is an indirect linkage that is accomplished by meshing
the power output of the engine with the power output of one of the other two
electric motors.
http://www.plugincars.com/exclusive-chevrolet-volt-chief-engineer-explains-volt-drivetrain-says-volt-electric-vehicle-90758.ht
Sent from my iPhone
On May 14, 2015, at 6:59 AM, Russ Sciville <[email protected]> wrote:
The electronics only register cell electricity usage in the kWh field and gas
use in the other field.I agree though that any use of gas when measuring range
could be slightly incorrect as the Volt/Ampera REX is a generator only and
starts and stops regularly if driving slowly to ensure that it doesn't put any
gas generated power into the cells. The software engineers try extremely hard
to only generate energy for the road when the cells are considered empty but
are actually topped up and emptied in a continuous process.
If you check earlier posts you will note that many display electricity only use
and are often over 50 miles.
BTW, these cars were so ahead of their time and are still probably the only
PHEV's that are pure electric with gas mode only used when the cells are empty
or "Hold/Mountain" mode is selected.They have huge power off the line and will
happily reach and cruise at 100mph (not on a public road) using battery only.
It is later hybrids like the Outlander that seem to need gas mode to assist the
electric motor.
From: Paul Dove <[email protected]>
To: Russ Sciville <[email protected]>
Sent: Thursday, 14 May 2015, 12:41
Subject: Re: [EVDL] Supercharging is not the way.
I think you all are mistaken. You are using gas. Maybe not much .3 of a gallon
like the guy said in the forum but then it doesn't take much gas to go 15
miles. Those cars go into gas mode if you go over 45 miles an hour I believe
Sent from my iPhone
On May 14, 2015, at 3:39 AM, Russ Sciville <[email protected]> wrote:
Hi Paul,
I never wished this to start an argument as we are all I hope avid EVers.
My post was simply to show that a well designed drive train is capable of high
mileages even when tugging around a heavy body and I totally agree with other
posts that removing weight and lowering the CD will inevitably reduce the need
for higher capacity battery packs.
The Volt/Ampera has a 16kWh pack but only allows around 10.4kWh to be used for
longevity and many are covering over 150,000 miles with little or no capacity
loss as I believe the loss is above the allowed amount.
As for proving the range, yes you need to drive steadily but it is an art many
EVers develop naturally and this forum link
https://speakev.com/threads/50-mile-club.304/page-11 will show that it is
exceeded regularly.
What has surprised me is that my Volt/Ampera exceeds the range efficiency of my
Lotus Elise EV which only weighs a tonne although is using an older drive train
which uses the original gearbox fixed in third..
From: paul dove via EV <[email protected]>
To: Electric Vehicle Discussion List <[email protected]>
Sent: Wednesday, 13 May 2015, 22:37
Subject: Re: [EVDL] Supercharging is not the way.
No they don't. 30 to 35 miles on battery.
You would have to prove that, Of course the i-MiEV will go further if you drive
40 MPH.
I was speaking of normal driving.
From: Russ Sciville <[email protected]>
To: Paul Dove <[email protected]>; Electric Vehicle Discussion List
<[email protected]>; Electric Vehicle Discussion List <[email protected]>
Sent: Wednesday, May 13, 2015 11:05 AM
Subject: Re: [EVDL] Supercharging is not the way.
Volt/Ampera's regularly do more than 50 miles on their 10.4kWh battery packs
and that includes dragging round a backup four cylinder engine in a steel
chassis.
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