, 2005 18:28
Subject: Re: [Biofuel] Debatable statement?
Hi Greg,
now we're getting to something specific enough to work with.
Just to start debate on something I think about everyday, when I get
into my
LandCruiser.
I wonder how much extra fuel is being used, because of the small
.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Mike Weaver
Sent: Sunday, September 18, 2005 12:13 PM
To: Biofuel@sustainablelists.org
Subject: Re: [Biofuel] Debatable statement?
I'm in. let's buy a wrecked 1st generation Prius and do it.
And they're all gasoline
Great thread, wonderful read. I can't wait to add to it. But reading
has used all my time this morning. I love this group.
Cheers,
Brian
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ll" <[EMAIL PROTECTED]>To: <BIOFUEL@SUSTAINABLELISTS.ORG>Sent: Thursday, September 15, 2005 14:55Subject: Re: [Biofuel] Debatable statement? H.
Are you sure you want to get that applied? The academics willbe appalled. :)I am doing that right now with a VW rabbit, and
[EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Thursday, September 15, 2005 14:55
Subject: Re: [Biofuel] Debatable statement?
H. Are you sure you want to get that applied? The academics will
be appalled. :)
I am doing that right now with a VW rabbit, and I have settled on a
SVO
I'm in. let's buy a wrecked 1st generation Prius and do it.
And they're all gasoline powered! The only way to get a diesel electric
hybrid in this country is to build it yourself. I swear, before, I'm
dead, I'm going to build a solar-svo-diesel-electric-regenerative
hybrid out of some old
with a bigger / more powerful engine.
Greg H.
- Original Message -
From: Darryl McMahon [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Thursday, September 15, 2005 20:20
Subject: Re: [Biofuel] Debatable statement?
This is not what I understood as your intent from your
AGERATEC AB
- Original Message -
From: David Miller [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Friday, September 16, 2005 12:30 AM
Subject: Re: [Biofuel] Debatable statement?
Zeke Yewdall wrote:
One major way acceleration hurts is that engines are set to richen the
mixture
The stock transmission was a close ratio 5 speed, which ends up doing
about 4k rpm at 70mph. The only way I can explain this low gearing is
1) it was designed for towing (not likely in a rabbit)
2) it was designed to reduce the space between gearing, for faster accelleration
3) the gas engine is
Apparently not. I was referring to a VW GTI in an earlier post and
didn't realize you weren't.
Sorry.
Zeke
On 9/16/05, Greg and April [EMAIL PROTECTED] wrote:
???
Are we talking about the same type of vehicle?
I'm talking about a '85 Toyota LandCruiser BJ60 with a 3B engine.
IIRC,
The 4 banger is original equipment.
The trannie is a manual 5 sp.
Greg H.
- Original Message -
From: David Miller [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Thursday, September 15, 2005 14:51
Subject: Re: [Biofuel] Debatable statement?
My advice from a practical
If
your time is worth anything to you I doubt you'd ever make it back on a
$$ basis for the fuel saved.
I didn't think that this was about saving money. I thought it was
about reducing carbon emissions or something like that.For me the
most cost effective thing certainly wasn't parking my
trips to 10,000 - 12,000 ft. once a
month or so.
Greg H.
- Original Message -
From: Zeke Yewdall [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Friday, September 16, 2005 8:25
Subject: Re: [Biofuel] Debatable statement?
The stock transmission was a close ratio 5 speed, which
I agree with Taryn. I am to the point where I am going to be making my own vehicles. The automotive industry is regressing instead of progressing in the ecological responsibility. However, people want better, more attractive, faster "luxury" cars, so the industry is catering to this just to make
I would be inclined to think that turbocharging, or possibly
supercharging the engine would be a better alternative. Of course you
will have to fabricate all of the parts, and I would wager that the
injector pump won't be able to deliver the extra fuel that significant
boost would require for
No problem.
Greg H.
- Original Message -
From: Zeke Yewdall [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Friday, September 16, 2005 9:49
Subject: Re: [Biofuel] Debatable statement?
Apparently not. I was referring to a VW GTI in an earlier post and
didn't realize you
. We find the performance more than adequate.
Darryl McMahon
- Original Message -
From: Darryl McMahon [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Thursday, September 15, 2005 20:20
Subject: Re: [Biofuel] Debatable statement?
This is not what I understood as your
: Friday, September 16, 2005 9:45 AM
To: Biofuel@sustainablelists.org
Subject: Re: [Biofuel] Debatable statement?
I would be inclined to think that turbocharging, or possibly
supercharging the engine would be a better alternative. Of course you
will have to fabricate all of the parts, and I would
One major way acceleration hurts is that engines are set to richen the
mixture during hard acceleration in order to prevent detonation
(knocking, pinging) at high cylinder pressures.
Also, carburated engines richen the mixture to compensate for fuel
vapour condensing on the intake manifold walls
Charles Lindberg did some of this training for P-38 pilots in the Pacific.
For gasoline engines, high BMEP is good as long as you stay below the
range where you have to richen the mixture to avoid detonation.
Operation at lean mixtures is good as long as combustion is fast enough
so that you can
One major way acceleration hurts is that engines are set to richen the
mixture during hard acceleration in order to prevent detonation
(knocking, pinging) at high cylinder pressures.
Does this apply to diesel engines which almost always operate with
excess oxygen?
.
- Original Message -
From:
Michael Redler
To: Biofuel@sustainablelists.org
Sent: Tuesday, September 13, 2005
13:07
Subject: Re: [Biofuel] Debatable
statement?
I knew it wouldn't take long for these (good) questions to come up.
I'm just concerned
power.
Greg H.
- Original Message -
From: Michael Redler
To: Biofuel@sustainablelists.org
Sent: Tuesday, September 13, 2005 13:07
Subject: Re: [Biofuel] Debatable statement?
I knew it wouldn't take long for these (good) questions to come up.
I'm just
Very interesting discussion here.
How many people here are swapping engines?
I was giving some thought to removing the 351 ci gasaholic in my Ford
f150 and replacing it with a diesel engine.
Years ago (before I saw the advantage of diesel) I pulled a engine
from my Mercedes 240d and did major mods
Too underpowered and the vehicle will be too slow to overtake and pass other vehicles.
KirkGreg and April [EMAIL PROTECTED] wrote:
Ok, given the same vehicle ( and about the same weight ), how does one go about picking a replacement engine and perhapsthe replacing thetransmission as well?
The
Uh. Passing other vehicles? My first car was an old subaru that took
several miles to hit 70mph on the highway. I don't think I'll be
disapointed by a diesel rabbit.
But seriously, if the average automobile engine nowadays has 40% more
power than it needs for cruising at the speed limit (my
No, diesels are not susceptible to detonation which is a non-applicable
concept in its pure form. You want a diesel to burn the fuel wherever the
fuel is, as soon as it is injected. The problem is to get it to burn fast
enough.
Diesels do generate smoke from incomplete combustion as the air
Hi Zeke,
On Sep 15, 2005, at 5:59 PM, Zeke Yewdall wrote:
...
Even the new hybrids get lousy gas mileage,
because the hybrid design is optimized for adding power, not
increasing mileage like the insight and prius were. ...
Oh man, this just burns my a*s. I was so excited a few years ago
-
From: Darryl McMahon [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Tuesday, September 13, 2005 6:40
Subject: Re: [Biofuel] Debatable statement?
Why bother?
The wrong tool for the job is the wrong tool for the job. If you want to
split a
diamond, neither a sledge hammer
Greg and April wrote:
Ok, given the same vehicle ( and about the same weight ), how does one
go about picking a replacement engine and perhaps the replacing
the transmission as well?
The reason I ask, is that I would like to replace the engine I have
with a better engine, but, I don't
Sent: Thursday, September 15, 2005
15:35
Subject: Re: [Biofuel] Debatable
statement?
Too underpowered and the vehicle will be too slow to overtake and pass
other vehicles.
KirkGreg and April [EMAIL PROTECTED]
wrote:
Ok, given the same vehicle ( and about
Zeke Yewdall wrote:
One major way acceleration hurts is that engines are set to richen the
mixture during hard acceleration in order to prevent detonation
(knocking, pinging) at high cylinder pressures.
Does this apply to diesel engines which almost always operate with
excess oxygen?
Not if
Bingo!
Greg H.
- Original Message -
From: Brian Rodgers [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Thursday, September 15, 2005 15:27
Subject: Re: [Biofuel] Debatable statement?
Very interesting discussion here.
How many people here are swapping engines?
I was giving
Message -
From: Zeke Yewdall [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Thursday, September 15, 2005 14:55
Subject: Re: [Biofuel] Debatable statement?
H. Are you sure you want to get that applied? The academics will
be appalled. :)
I am doing that right now with a VW
Sent: Thursday, September 15, 2005 15:59
Subject: Re: [Biofuel] Debatable statement?
Uh. Passing other vehicles? My first car was an old subaru that took
several miles to hit 70mph on the highway. I don't think I'll be
disapointed by a diesel rabbit.
SNIP
I admit
.
Greg H.
- Original Message -
From: David Miller [EMAIL PROTECTED]
To: Biofuel@sustainablelists.org
Sent: Tuesday, September 13, 2005 14:05
Subject: Re: [Biofuel] Debatable statement?
Joe Street wrote:
SNIP
Someone - James Dolittle? made this famous during world war II. They
had
True or False
Underpowered vehicles can be just as inefficient as overpowered vehicles.
Why or why not?
Greg H.
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Greg and April [EMAIL PROTECTED] posited:
True or False
Underpowered vehicles can be just as inefficient as overpowered vehicles.
Why or why not?
Why bother?
The wrong tool for the job is the wrong tool for the job. If you want to split
a
diamond, neither a sledge hammer nor a feather
The fuel efficiency of an engine is not a constant. At high throttle settings economy is sacrificed for power. ie the grams of fuel used per horsepower hour increases. That is why infinite ratio transmissions would be worthwhile. And ideally - lossless.
At low loads the fixed burden of the engine
Greg H. wrote:True or FalseUnderpowered vehicles can be just as inefficient as overpowered vehicles.
Why or why not?All US models:
2000 Geo/Chevy Metro (1.3L 3cyl gasoline, 5 Spd Manual)
EPA MPG: City 39 Highway 46
2000 Ferrari 550 (5.5L V-12 gasoline, 6 Spd Manual)
EPA MPG: City 8 Highway 10
Kirk McLoren wrote:
snip. That is why infinite ratio transmissions would be worthwhile. And
ideally - lossless. snip
And there are such a transmission systems already
Check out the http://www.torotrak.com/howitworks.html
Dont miss the cool flash demo
Here's a discussion thread with links to graphs of the gm/kWh for a
few diesel engines. It changes based both on engine RPM and engine
throttle position. The VW TDI is one of the best small engines from
what I understand, peaking at under 200 grams/kWh.
(theoretically) True
(IMHO) Engine efficiency and engine size are almost mutually exclusive (very few things are perfectly scalable).
If your throttle control is nothing more than a request for more or less powerAND there is a correlation between a demand for power and a demand for fuel
Are we comparing exactly the same weight/aerodynamics/rolling
resistance car here, with just different powered engines? Or complete
different cars like a metro, corolla, and a ferarri.
I think for otherwise identical cars, a medium sized engine (but
smaller than what most cars come with nowdays)
Zeke Yewdall wrote:
Snip
I think for otherwise identical cars, a medium sized engine (but
smaller than what most cars come with nowdays) will get better
mileage, because it can accellerate fast enough to get out of the fuel
dumping acceleration, and into more fuel efficient cruising faster.
Wouldn't a variable displacement engine work best.
Say a 2+ liter 4 cylinder where 2 cylinders can be turned off at speed.
Dodge is doing this in their trucks with v8's.
A BMW mechanic behind me told me that BMW makes an engine with variable
compression. The head move in/out to change the
, September 13, 2005
9:22 AM
To: Biofuel@sustainablelists.org
Subject: Re: [Biofuel] Debatable
statement?
The fuel efficiency of an engine is not a constant. At high throttle
settings economy is sacrificed for power. ie the grams of fuel used per
horsepower hour increases. That is why infinite
Joe Street wrote:
I think for otherwise identical cars, a medium sized engine (but
smaller than what most cars come with nowdays) will get better
mileage, because it can accellerate fast enough to get out of the fuel
dumping acceleration, and into more fuel efficient cruising faster.
If
I knew it wouldn't take long for these (good) questions to come up.
I'm just concerned that we don't get too hung up on cars designed for maximum efficiencyvs maximum power. Some of the methods used to get fuel and air to high horsepower engines resemble toilet bowls and a lot of that fuel ends
David Miller wrote:
The first half of this is a good observation. The second half, however,
is all wrong. Sorry:(
Why is that? If the coefficient of friction remains constant (an
assumption) then the frictional force should be proportional to the
normal force which is directly
Does anyone else know of issues with running Biodiesel in the Dodge
Cummings engine?
From the various biodiesel forums I've read, most people have no
trouble with these (as long as they change the fuel filters and use
good biodiesel of course). But there has been a lot of discussion on
whether
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