Hybrid Car – More Fun with Less Gas

Electric AC Compressor in Dixie - Page 11

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Posted by Daniel who wants to know on May 25, 2011, 4:18 am
 


Did you even read the site at all?  He used a commercial UPS that uses a
nominal 240V lead acid battery bank and hooked it directly to the car's
traction battery.  NHW20 Prius nominal pack voltage is 201.6 (@1.2v/cell)
but since the traction pack is never below 40% charge the actual voltage is
higher, and during the engine on cycles the voltage would be higher due to
charging.


AFAIK There is no such thing. They just balance the load instead IE your
house or block is on phase A and your two neighbors houses or blocks might
be on B and C.  It would take one heck of a wye-delta wound zig-zag
transformer assembly to phase shift 2 of the legs 120, one forward one
back, to match the third.

More "random words" for you TYVM



Posted by Elmo P. Shagnasty on May 23, 2011, 12:08 am
 


So why the term "gasser", when the Prius uses gasoline and ONLY gasoline
as a source of energy?

And why the differentiation between "gasser" and diesel fueled cars?

Posted by bwilson4web on May 21, 2011, 3:15 pm
 wrote:

Al Falta, you have correctly identified the effect and the troll has
identified the mechanism, "managing the gasoline's energy" that
separates the Prius hybrid electric from gassers. But let's add some
technical details:

o electric motor generators and battery - the Prius carries a
substantial amount of energy in the traction battery that as you've
observed, can move the car several miles. Prius electric only range is
typically just a mile but it can be extended which makes the car
substantially safer than a gasser or diesel.

o continues to move when all gas is burned - I've run our Prius out of
gas over four dozen times to support my gasoline studies. With one
exception, I've always been able to move the car to a safe place to
add the one gallon, spare can. The one exception was my wife's ZVW30
which as a more subtle "out of gas" indicator. The ZVW30 requires
monitoring the energy flow display that suppresses the flow arrows
when all gas is finally burned. In contrast, the NHW11 and NHW20
provide an abundance of alerts and alarm with the last gas is burned.
This superior Prius ability to move the car to a safe place to refuel
is a major advantage over gassers.

o engine efficiency - because the electric power system provides power
instead of using the engine when it would be inefficient, limited or
exceptionally polluting. Gassers have to move the car at both low and
high power settings. At low power, gasser engines are especially
inefficient due to pumping losses through the throttle plate. The
Prius just turns the engine off and uses the electric power. On the
high power demands such as climbing a hill or passing, an efficient
engine can run out of power. However, the electric system provides
additional power and can give an apparent improvement in a hill climb
MPG:
http://hiwaay.net/~bzwilson/prius/pri_hill_climb.JPG
Notice that as hill climbing speed exceed 70 mph, the amount of fuel
burned decreases. The difference comes from the traction battery and
motor-generators.

So once again, the superior Prius goes where gassers and diesels can
not follow. Fuel efficiency and safety are important differences. For
example, here is the result of a 10 mile, loop:
http://hiwaay.net/~bzwilson/prius/pri_test_15_10mile.jpg
The display shows a maximum of 99.9 MPG on a flat track.


Bob Wilson

Posted by Al Falfa on May 21, 2011, 7:43 pm
 "bwilson4web"  wrote in message


Yes, from a dead start the electric-only range is only about a mile but, as
Newton's First Law of Motion so eloquently states, a body in motion tends to
stay in motion.  A little captured kinetic energy can extend that range
quite a bit if you going 40 mph when you run out of gas.




Posted by bwilson4web on May 21, 2011, 7:59 pm
 
Yes indeed and the Prius can climb on traction battery power say to
reach a gas station at the next off ramp. A lot of folks have voided
the 'gas can walk' because of this unique, Prius feature.

Bob Wilson

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