domain name "buzztrader.com"
Sale at the
asking price of $10,000. Serious inquiries only, call 1.530.600.0564
9-5 PST. Domain Name Only, programming not included. High
traffic site, established 2004, unlimited potential.
Price is FIRM!
Computer, Lab and Road Testing Expertise To Improve Vehicle Fuel
Technologies Combined with Smart Driving Lead to Significant Fuel
General Motors is combining its sophisticated computer
modeling capabilities and laboratory and road testing expertise
to further improve vehicle fuel efficiency. As a result, GM
offers more vehicles that achieve 30 miles-per-gallon or better (Environmental
Protection Agency highway label data) than any other manufacturer
for 2006. The company provided an overview of its on-going fuel
efficiency improvement efforts today during a media briefing at
its Vehicle Engineering Center, in Warren, Mich.
Throughout GMs vehicle
development process, engineers attack the areas that will provide
the greatest opportunities to increase fuel efficiency including
aerodynamics, powertrain, and chassis and electrical systems. GM
has been implementing several vehicle technologies to address
These technologies, combined with
smart driving, can provide as much as one full tank of gas
savings every other month for the fuel-conscious consumer.
Fuel Efficient Vehicle
Showcasing GMs new full-size
SUVs, Ed Koerner, vice president of GM North America Engineering,
discussed how the company is able to engineer many of the most
fuel efficient vehicles on the market.
Getting the basics right in
the development of our vehicles is critical, said Koerner.
We continue to use our significant technical competency,
key fuel efficiency tools, and world-class laboratories to
further improve vehicle fuel economy. We know that we must
deliver outstanding fuel economy as well as all of the other
vehicle attributes that our customers demand.
GM engineers use a computer-based
fuel economy model to determine how energy is used and lost in
its vehicles, particularly with powertrain efficiency, chassis
system and electrical system losses, mass and aerodynamics.
Engine friction, aerodynamic drag and the transmission contribute
to the greatest energy losses on combined EPA cycle testing,
comprising of nearly 60 percent of the mechanical energy.
Once we determine where the
most significant opportunity for improvement exists, we evaluate
how to best optimize fuel energy during the early stages of the
design process, said Koerner. We use our analytical
modeling expertise to help us realize the best solution to
improve fuel efficiency while at the same time to allow us to get
our vehicles to market faster.
A key fuel-efficiency enabler for
GM is its aerodynamics capabilities that include virtual math
tools and a state-of-the-art laboratory. Every GM vehicle
undergoes rigorous mathematical analysis and physical testing in
the worlds largest automotive aerodynamics lab to optimize
aerodynamic shape development, cooling airflow and wind noise
reduction. While the most impressive improvements are derived
from the powertrain, aerodynamics is the second largest
contributor to truck/SUV fuel efficiency.
For example, the 2007 Chevrolet
Tahoe received an eight percent reduction in aerodynamic drag
over the previous model yields a three percent improvement in
fuel economy, positioning the vehicle as having the best fuel
economy, as well aerodynamic drag, in its class. Drag reduction
is achieved by looking at the total vehicle, from front-end shape
to the details of air dams to mirrors, roof racks and cross bars.
Fuel Saving Technologies
Once analysis and testing is
complete, GM engineers determine where the greatest efficiency
gains can be achieved and apply existing or develop new
There are several key powertrain
technologies that GM is implementing including engine variable
valve timing, Displacement on Demand cylinder deactivation and
As GM works to improve the
efficiency of its conventional engines, the same engineering
fundamentals are being applied to the integration of its hybrid
technology. GM currently offers a hybrid system in its Chevrolet
Silverado and GMC Sierra, the worlds first hybrid pickup
trucks. GM will also be implementing two other distinct hybrid
systems. A new hybrid system will debut on the Saturn Vue early
next year. In addition, GMs two-mode hybrid system
technology will be introduced in the Chevrolet Tahoe and GMC
Yukon in 2007.
In addition to these technologies,
GM has made a major commitment to E85 flex fuel vehicles in the U.S.,
with more than 1.1 million vehicles on the road today. E85 fuel
consists of 85 percent ethanol and 15 percent gasoline. GM
approved the use of 10 percent ethanol blended fuel in all GM
products more than 20 years ago and produces five million E10
capable vehicles annually.
Other key GM fuel-saving
- Regulated voltage control (RVC)
GMs patented RVC technology optimizes
alternator load by reducing voltage when the battery
reaches 80 percent state-of-charge. RVC extends battery
and electrical component life, delivering approximately
one percent fuel economy gain. RVC will be featured in
more than four million vehicles annually by 2007.
- Electric cooling fans
replaces engine driven fans, requires less horsepower and
produces less noise to deliver a one percent increase in
fuel economy. Electric cooling fans will be featured in
more than three million vehicles annually by 2007.
- Variable displacement air
conditioner (A/C) compressor replaces a fixed
displacement compressor, allowing it to operate more
efficiently, providing a three-five percent increase in
fuel economy while using A/C. Variable displacement A/C
compressors will be featured in more than two million
vehicles annually by 2007.
- Electric power steering
reduces mechanical losses by eliminating the pump,
hoses and hydraulic fluids to deliver a one-two percent
increase in fuel economy. Electric power steering will be
featured in more than 500,000 vehicles annually by 2007.
According to Roger Clark, GM North
America Engineering senior manager of energy and drive quality,
in addition to GMs efforts to improve fuel economy,
consumers can play an important role in maximizing the fuel
efficiency of their vehicles.
The fuel efficiency of a
vehicle depends upon more than the design and content, said
Clark. Consumer behavior can also have significant impact
on the number of miles traveled on a gallon of gasoline. If our
customers take advantage of their vehicles fuel economy and
optimize their own driving behavior, the fuel saving opportunity
GM recommends a few key tips that
customers could follow to help improve their vehicle fuel economy:
- Drive the speed limit. Gas
mileage decreases rapidly at speeds. On a typical SUV,
for every 10 miles-per-hour average speed increase, you
can lose four miles-per-gallon of fuel economy. In
addition, for some drivers, using cruise control on the
highway could help save as much as 10 percent.
- Avoid keeping unnecessary
items in your vehicle - an extra 100 pounds in a vehicle
could reduce fuel economy by up to two percent.
- Keep vehicles properly
maintained. For example, replacing a dirty air filter can
improve a car's gas mileage by as much as 10 percent.
Also, regularly check your tire pressure, following the
recommended inflation. Gas mileage can be improved by
three percent by keeping tires inflated to the proper
pressure and tire life may be as much as doubled.
For more information about GM's
fuel saving technologies and additional fuel saving tips, visit www.gmability.com.
General Motors Corp. (NYSE: GM),
the worlds largest automaker, has been the global industry
sales leader since 1931. Founded in 1908, GM today employs about
325,000 people around the world. It has manufacturing operations
in 32 countries and its vehicles are sold in 200 countries. In
2004, GM sold nearly 9 million cars and trucks globally, up 4
percent and the second-highest total in the companys
history. GMs global headquarters are at the GM Renaissance
Center in Detroit. More information on GM can be found at www.gm.com.