Opportunity for fuel savings exists on tractor trailers _ fleet management content from fleet owner

That doesn’t stop Ozark from spec’ing its equipment as fuel-efficiently as possible with improved aerodynamics, McDonald stresses. World j gastrointestinal oncol impact factor Right now, the company operates a little over 700 Freightliner Cascadia tractors spec’d with the full Evolution aerodynamic package, a Detroit DT12 AMT mated to DD15 engines, and fuel-efficient tires. 3 gases in the atmosphere All of its 53-ft. Electricity for refrigeration heating and air conditioning answer key dry van trailers are equipped with side skirts.

The fleet has even switched to full synthetic yet thinner viscosity motor oils. V gashi kenga e zagrebit Longer change intervals allow the company “to get more fuel mileage from them with less maintenance,” McDonald notes.

Yet figuring out the role of specific pieces of the fuel-saving equation, i.e, AMT, trailer skirts, etc., is the tricky part. Grade 9 electricity quiz “We’re doing so many things at once. Electricity terms and definitions How does each piece contribute?” McDonald points out. Electricity jeopardy game “We really rely on our partners to help us pick the best specifications and solutions. Electricity usage by appliance We have to trust them. Gas nozzle prank But I still have to use simple math to make it work. Electricity load shedding It has to pay out in the end.

“And the real world is very different than the test track,” he continues. Gas efficient suv 2015 “It’s also hard to figure [those specific savings] with different drivers in different weather conditions on very different roads.” Driver training

Paul Higgins, director of maintenance at Prime Inc., also struggles with similar questions and finds that the company requires a two-step solution that involves a focus on equipment specifications and on driver training.

“We have classes to teach drivers how to be the most fuel efficient. Electricity generation by state [It’s] a fairly straightforward process and not necessarily a magic pill,” he points out.

“Aerodynamics offer a huge opportunity for all of us to improve fuel mileage. Electricity 101 presentation We also realize we’re not doing all that we can to be more aerodynamic,” he explains. Electricity year invented “Based on our model, it’s crazy to spec a ‘square hood’ truck now.”

Higgins points out that trailer skirts offer 6% fuel savings and can get up to 9% in some cases. Gas 85 “Since we make our own skirts, we can make modifications based on how we see them work,” he adds.

Researchers are also starting to put some numbers to aerodynamic improvements. Electricity and magnetism connect to form The latest Confidence Report compiled by the North American Council for Freight Efficiency (NACFE), for example, determined that aerodynamic enhancements to Class 8 tractors can return a sizable saving in fuel efficiency—even for day cab models that many felt were incapable of benefiting from aerodynamics.

“During the past 20 years, truck manufacturers have done a good job of improving the aerodynamics of sleeper tractors, saving up to 10% in fuel costs,” the group notes in its Tractor Aerodynamics Report. Electricity 24 hours “Tractor aerodynamic devices improve fuel efficiency by reducing drag so that it takes less fuel to move down the road, especially at higher speeds.” Misperceptions

Even though day cab tractors operate at lower miles per hour, NACFE researchers found they benefit from the installation of aerodynamic devices.

“There is a long-standing misperception in the trucking industry that im­proved aerodynamics will only save fuel at speeds above 55 mph. Electricity news in nigeria Because of this, day cabs and other [tractor] duty cycles have lagged long-haul sleepers in their aerodynamic performance improvements,” the group notes.

“But in reality, aerodynamic drag is acting against the vehicle at all speeds above zero mph. Gas 1940 hopper Given the many low- or no-cost design elements that can reduce drag, even fleets operating at lower speeds should consider adoption,” NACFE adds.

Mike Roeth, the group’s executive director, believes truck manufacturers should make full aerodynamic packages like those offered on sleeper cabs standard on their day cab tractors.

“Not only do those packages provide substantial fuel economy benefits even at lower speeds, but fleets tend to have much longer trade cycles for their day cab trucks,” he says. Electricity 4th grade powerpoint “The fuel savings over a decade can also help fleets limit the risks of future diesel price increases.”

• Another 10% can be lost simply by pairing a mid-roof tractor with a dry van or refrigerated trailer. Save electricity images NACFE stresses that tractor and trailer heights should be matched for as many miles as possible.

• The greatest opportunity to benefit from aerodynamic tractor enhancements remains the on-highway van trailer segment for both day cabs and long-nose high-roof sleeper models.

• While the devices currently available on the market do add some weight to the vehicle, the impact of the weight on fuel economy is just 0.5 to 0.6% per 1,000 lbs.

• There is less than a 2,000-lb. Electricity nyc weight difference between the most aggressively optimized aerodynamic tractors and the least, so the maximum mpg reduction due to aerodynamics is less than 1.2%—far smaller than the potential fuel savings offered by aerodynamic enhancements.

• Many day cabs operate at highway speeds during nearly all of their duty cycle, so aerodynamic styling can increase fuel efficiency for day cab models by as much as 13%. Electricity cost nyc Even day cabs operating in start-stop city driving will see savings from certain aerodynamic technologies, NACFE found.

Consulting firm Fleet Advantage takes all of that a step further with a new data index resource it has compiled. Gas x strips walmart John Rickette, vice president of transaction management, notes the resource compares “all-in” costs of older model-year Class 8 trucks and calculates the savings of new model replacements to help fleets identify the sweet spot for replacement and which specs may add the most cost savings.

“When you do that, you are looking for the point in time when a truck becomes economically obsolete,” Rickette says. Electricity symbols and meanings “There’s always an inflection point, but that also depends on miles driven, type of duty cycle, etc. Electricity rates el paso Roughly between 400,000 and 500,000 mi. Types of electricity tariff is the sweet spot. Electricity symbols ks3 That is when maintenance and repair costs spike; there’s degradation in fuel economy; resale value spikes; and warranty coverage begins to expire.”

Using its index, Fleet Advantage calculates that companies using Class 8 trucks would save approximately $18,000 per truck in the first year by upgrading from a 2011 to a 2017 model-year day cab or sleeper unit while reducing carbon dioxide emissions by 14%.

Rickette does note that such calculations need to be addressed on a case-by-case basis to account for variables such as usage patterns and weather.

“The first six months represent the break-in period, so fleets may not be getting [the fuel economy gains] they expect to be getting. Gas usa That also applies to the seasons, as winter can affect performance,” he emphasizes.

On top of that, Fleet Advantage also plans to incorporate engine idle time, excessive speed, hours of operation, and other factors that affect vehicle wear and tear over the truck’s life­ cycle. Gas jockey “We’ll bake that in for the future,” Rickette notes.

Ozark’s McDonald stresses that when fleets try to project any sort of fuel savings, they must include items such as potential accident and repair costs.

“You’ve got to consider those,” he says. Electricity news australia “For example, trailer tails save money on fuel for certain; however, one fleet I work with found that they got torn up so much that the cost of repairing them could make the fuel savings a wash. Gas efficient cars 2016 That’s got to be factored in.” Human behavior

What’s the ultimate ingredient for maximizing fuel economy no matter the fuel-efficient specification? According to Prime, this ingredient affects about 80% of the fuel economy equation—and that’s the driver.

So, anything that can be done to ease back on the vagaries of human behavior behind the wheel will help further boost fuel economy gains down the road.

“We finally agree that AMTs can equal the best driver using a manual. Electricity worksheets for grade 1 AMTs are nice, fast, and smooth in terms of gear shifting now and are not nearly as herky-jerky as they once were,” Prime’s Higgins says. Electricity 80s song “Using GPS technology to adjust the truck to the topography is the next step; going around a corner, shifting in neutral because [the transmission] knows from GPS what the road is like there.”

At the end of the day, Prime says, it all comes down to engine speed; driving the engine “slower” in terms of rpm makes a big difference not just in fuel consumption but also in safety and driver comfort.