Fran <Fran.Beta@[EMAIL PROTECTED]
> wrote:
>On Apr 30, 12:53=A0pm, Bernd Felsche <ber...@[EMAIL PROTECTED]
>
>wrote:
>> [Cross-posting to politics newsgroups zapped]
>> Fran <Fran.B...@[EMAIL PROTECTED]
> wrote:
>> >The EPA has built a modified hybrid that uses a hydraulic system, not
>> >a battery, to store braking energy. When you press the brakes, the
>> >wheels drive a pump that compresses nitrogen gas, which is inexpensive
>> >and inert. When you accelerate again, that compressed gas runs the
>> >pump in reverse to help power the vehicle.
>> That must be all of 20% efficient, at best.
>> >Perhaps that's why Charles Gray, the director of the Advanced
>> >Technology Division and one of the developers of the hydraulic hybrid,
>> >can't contain his excitement about its potential.
>> Potential to scam lots of $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
>> from ignorant, greedy fools.
>> >It sounds credible, and given that the applicability of this to
>> >existing vehicle designs is very wide, very exciting.
>>
>> It's *incredible*. Grossly inefficient and hydraulic motors don't
>> like to spin very fast at all.
>Well I suppose the test will be if it can be proved in a vehicle built
>as more than a prototype.
>If the technologies they are working on can be used in existing or
>modified vehicles, it would be useful.
You might be surprised that there are people who can tell, just by
looking at the proposal if it's worth pouring money into, based
on technical merits.
A compressed-nitrogen-powered hydraulic pump borders on the
ludicrous. It may be necessary in environments where there are
explosive gases, otherwise it's a very, very stupid idea for a car.
The energy conversions are inherently lossy. Far more so than in a
conventional road vehicle.
Adding the components to a an otherwise conventional vehicle to
provide regenerative braking and assistance during acceleration will
probably result in an increase in fuel consumption as very little
useful energy can be gathered during braking by those means; and
even less will be available during subsequent acceleration. Most of
the energy will be lost as heat; just like with normal brakes.
--
/"\ Bernd Felsche - Innovative Reckoning, Perth, Western Australia
\ / ASCII ribbon campaign | Great minds discuss ideas;
X against HTML mail | Average minds discuss events;
/ \ and postings | Small minds discuss people. -- Eleanor
Roosevelt
|
