Diesel And Gas Prices
Over the years, the prices of both gas and diesel
have experienced some drastic changes. Many years
ago, the price of gas was around a dollar or a
little more, nothing like it is today. Back then,
gas wasn't high in price although the demand for
vehicles wasn't what it is today either.
As the demand for vehicles grew, the demand for
fuel grew as well. Other actions and events have
played into the equation as well, resulting in
the rising costs of fuel. Fuel is something we
all need to run our vehicles, as we wouldn't be
able to go anywhere without it.
As you may know, a majority of the gas we get at
local gas stations comes from overseas, primarily
the Middle East. Therefore, we have to pay taxes
and such on the gas we use, which pays for the
gas as well as the shipping. If we got our gas
from within the United States, one can't help
but wonder whether or not the prices would indeed
be lower.
Diesel on the other hand, has always managed
to keep a price lower than gas. Diesel comes
from within the United States, so the prices are
of course going to be lower. The only problem
associated with diesel fuel is locating it, as
many gas stations don't sell it.
When it comes to the choice between the two,
diesel fuel is obviously cheaper to buy. Gas is
in supply more, which means that you can find
it almost anywhere. If you own a gasoline
vehicle, you obviously don't want to put diesel
in it. If you own a diesel vehicle, then you
of course wouldn't want to put gas in it either.
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Advantages Of Diesel Engines
If you've owned a diesel powered vehicle in the
past or if you own one now, you no doubt appreciate
the qualities this engine provides you with. More
torque, better fuel economy, and easier maintenance
are but a few of the attributes of owning diesel
powered vehicles.
However, there are some motorists that still
complain about the engine's weak power, especially
when accelerating from a full stop. What you
may not be aware of is the fact that a diesel
engine can be tweaked to give more power without
harming the fuel economy.
Diesel engines use air compression to create
combustion versus the fuel/air mixture that is
required by gas engines. This attribute means
that diesel engines don't require spark plugs
and therefore don't need to be tuned up.
Diesel fuel has a much high fuel density than
gas, which results in fuel economy increases
of 20 - 30% over gasoline powered vehicles.
Diesel engines are also cheaper to maintain as
they have less parts than that of a gasoline
powered engine. The life span of a diesel
engine is also much longer.
If you're looking for torque, for pulling a
boat or other equipment, then the diesel
engine has the supreme advantage. Diesel
engines are surely slower, especially when
starting from a dead stop, although when you
climb hills or go over bridges, the diesel
engine is surely up to the task.
With trucks, diesel is normally the leader
over gas engines in terms of performance and
miles per gallon. Diesel trucks will get
more miles than gas trucks, and the price for
diesel is a bit cheaper than gas these days.
And with gas prices on the rise, diesel will
continue to dominate for a long time to come.
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Diesel Passenger Vehicles
Both diesel cars and light trucks are receiving a
lot of attention in the United States as a near
term strategy to achieve fuel economy and climate
change goals.
The renewed interest in diesel as of late stems
from its potential to improve passenger vehicle
fuel economy. The best diesel passenger vehicles
of today are more efficient on fuel than their
gas counterparts, helping to reduce carbon
emissions by 30 percent or more.
There are some auto makers that are talking about
re-introducing diesel into light duty markets as
a solution for reducing global warming pollution
from both cars and trucks. Another important
reason is that the higher efficiency of diesels
will provide a quick fix for manufacturers who
are struggling to meet federal fuel economy
standards for light trucks.
Even if the efficiency benefits of diesel do
yield real world improvements on the economy, the
potential climate change benefits are modest.
Even though diesel achieves more miles per gallon
than gasoline, many are concerned about the
impact that diesel passenger vehicles have on
the economy. From time to time, the combustion
in the engine can cause black emissions to spit
from the exhaust, which is actually very bad
for the economy.
While gas is actually the worst, diesel is taking
strides to improve engines and the impact on
the economy. Diesel is getting more and more
popular these days, as gas prices continue to
rise and rise.
Although diesel engines can have an impact on
the economy, they are the way to go for those
looking to conserve mileage. Diesel vehicles
cost more than gas vehicles, although they will
offer you more than you can expect. If you are
looking for a quality ride, diesel is the way
to go.
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Gas Diesel Hybrid War
These days, gasoline prices may be crimping your
your household budget. You may like to reduce
the U.S. dollars that flow to the Middle East for
oil, or perhaps you are motivated by your concern
for the environment, or even the nagging reality
that oil is a depleting resource that shouldn't
be wasted.
Fuel economy
To put it into prospective, the fuel economy are
the numbers posted on the window sticker of a new
vehicle. Studies have shown that the average
driver only receives 75 percent or so of the
mileage figures that are on the sticker.
You can use these numbers to determine the best
type of vehicle for your purchase. The numbers
will let you know how many MPG your vehicle will
get, so you can compare vehicles and then go
from there.
Hybrid pricing
The gas electric hybrid vehicles are normally
priced higher than non hybrid counterparts,
anywhere from a couple of thousand dollars to
several thousand dollars.
Hybrids can get a lot of miles per gallon,
some averaging around 45 - 55. This is great
for those who want to save money on gas, as
hybrids can go many miles on a full tank of
fuel and they come with extended warranties
as well.
Diesel efficiency
Diesel powered vehicles are yet another fuel
efficient option. Diesels are known for getting
extra mileage from every gallon of fuel. They
offer much better torque than many gasoline
engines. The price differential they have
over gasoline engines are usually much smaller
than that of the hybrid.
With plenty of options available, you're sure
to find what you need to help conserve fuel.
Before you make a purchase, always remember
to shop around and find what's best for you.
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General Information On Diesel Engines
Diesel engines offer the lowest specific fuel usage
of any other large internal combustion engine. The
fact remains, two-stroke diesels with high pressure
forced induction, particularly turbo charging, make
up a large percentage of the largest diesel engines.
Throughout North America, diesel engines are generally
used in larger trucks, where the low stress, high
efficiency cycle will lead to a much longer engine
life and lower costs to operate. These advantages
also help to make the diesel engine ideal for use in
the heavy haul industry.
Cars however, continue to use gasoline, primarily
due to the consumer desire for a wider range of
RPM. In Europe, the use of diesel engines with cars
is far more common.
Even though diesel engines are more efficient when
throttled down, they aren't suitable for most types
of aircraft. The higher compression ratios of the
diesel cycle demand a much stronger block, head,
and almost all moving parts in general. These
stronger parts add a lot of weight, or a lot of
expense, especially if lighter alloys are being used.
The Otto cycle engines are much cheaper to build for
these reasons, although they have long been overtaken
by the turbine engines. For the same displacement
of the engine, Otto cycles will produce more actual
power than a Diesel cycle can, because the fuel
will burn at a much faster rate, allowing more power
strokes per minute than a standard diesel can offer.
What this means, is that less fuel has to be carried.
Additionally, commercial aircraft is normally run
at preset limits, so that Otto cycle engines used
in aircraft don't suffer anywhere near the efficiency
penalties that land vehicles do. Heavy equipment,
such as those used in mining and construction,
almost always uses diesel engines.
Diesel engines are also used with submarines. In
these types of submarines, the diesel engine is run
when the submarine is on the surface, which charges
the batteries that power the submarine once it is
submerged.
All across the world, diesel engines serve many
different purposes. They are used with almost all
types of heavy machinery, and other vehicles. Gas
isn't the way to go with heavy machinery, as the
engines simply can't withstand the beating.
Diesel has been popular for many years with machinery
and submarines, simply because the engines can
last for years and years. Although they won't offer
as much speed as gasoline, the torque and power is
still there.
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How Diesel Engines Work
When gas is compressed, the temperature of it will rise,
with diesel engines using this very property to ignite
the fuel. Air is then drawn into the cylinder and
compressed by the rising piston at a much high
compression ratio than gas engines, up to 25:1, with
the air temperature reaching 700 - 900 degrees C.
At the top of the piston stroke, the diesel fuel is
injected into the combustion chamber at high pressure,
then through an atomizing nozzle, it mixes with the
hot high pressured air. The resulting mixture will
ignite and burn very rapidly. This combustion will
cause the gas in the chamber to heat up rapidly,
which increases the pressure and forces the piston
downwards.
The connecting rod will transmit this motion to the
crankshaft. The scavenging of the engine is either
done by ports or valves. To get the most out of
a diesel engine, use of a turbocharger to compress
the intake of air is vital. You can also use an
aftercooler or intercooler to cool the intake air
after compression by the turbocharger to further
increase your efficiency.
An important part of older diesel engines was the
govenor, which limited the speed of the engine by
controlling the rate of fuel that was delivered.
Unlike gas engines, the air that comes in is not
throttled, so the engine would overspeed if this
wasn't done. Older style injection systems were
driven by a gear system that came from the engine.
The diesel engine is truly an advancement to vehicles
as we know it. As technology gets better, you
can expect the diesel engine to get better as well,
possibly even proving just how much better it is
to the gasoline engine.
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