What’s the future for cng – green fleet – government fleet gas laws worksheet answers chemistry


There are advantages to running CNG over diesel, said Todd Richardson, fleet management director. CNG vehicles act like unleaded gasoline vehicles because there’s no urea and no regens. This makes it ideal in an urban environment. Making the Investment

When the City of Tulsa, Okla., Equipment Management Division first started building CNG infrastructure, it planned on using the fuel for its refuse trucks. But before the fueling station was completed, the city decided to outsource its refuse collection. The fleet continued to use CNG in its administration vehicles, and purchased CNG Honda Civics until the model was discontinued in 2015.

CNG is still used in the fleet when available — some user departments purchase their vehicles with bi-fuel packages capable of running on gasoline and CNG. But user departments own their own vehicles; while fleet can issue recommendations, it does not have final say on what vehicles are purchased. Over the past year, CNG usage within the city fleet dropped 30%, from 25,000 gallons to 17,000 gallons.

Even though the fleet’s consumption is lower than it used to be, CNG is thriving in Oklahoma. Robert Fazendine, fuel supervisor with the City of Tulsa, has seen demand grow at the city’s public-access fueling stations as Governor Mary Fallin has pushed for CNG adoption. The city received grant funding for its stations thanks to a statewide effort to build CNG stations every 100 miles along major corridors.

The City of Columbus, Ohio, has also seen high demand from the public. In 2017, the city’s CNG fueling stations pumped nearly one million gasoline gallon equivalents (GGEs) for its own fleet, as well as for several private sector fleets that fuel at these stations. Currently, the city is preparing to open its fourth CNG station. Dealing with Limitations

“Anywhere you can have a fixed route and it’s a predictable fixed route where you can come home every night and refuel the units on a slow-fill, it absolutely makes sense to use CNG,” Richardson said. “Where the application gets a little tougher is in things like snow removal where it’s an unpredictable route and you don’t know how long you’re going to be out there.”

In Phoenix, fuel savings was a major benefit when diesel cost $3.50 a gallon. The fleet does not see the same savings when diesel prices are low, but there are other benefits. For one, taxpayers largely support the use of CNG. For another, it’s a cleaner burning fuel and now that everything is set up, it doesn’t hurt to use it.

“We’re not seeing a lot of savings from fuel, no. But overall CNG vehicles are not more costly to maintain, there’s good public relations with them, and we have the infrastructure,” Gregg Duckett, Public Works operations manager for the City of Phoenix, said.

Kelly Reagan, fleet administrator for the City of Columbus, saw similar limitations. When the fleet was challenged by its City Council to reduce fuel spend, greening the fleet wasn’t even part of the conversation. Reagan made sure to frame his proposal in a way that emphasized financial benefits.

“We are in central Ohio, and there are no mandates for fleet to do this. None. But we did it because it’s the right thing to do and it saves the city money,” Reagan said. “You do need to take a long view, because fuel tomorrow can be $1.90 a gallon and the next day it could be $4 a gallon.”

Since 2011, the fleet has grown to 240 dedicated CNG vehicles. The city continues to replace diesel trucks with CNG, and plans to reach 404 CNG vehicles by 2020. Ten years ago, the city fleet consumed about 3.6 million gallons of petroleum fuel. In 2017, the fleet consumed 2.5 million petroleum gallons and has saved more than $2.6 million in fuel costs, thanks to its adoption of CNG and electric vehicles. The Rise of Electrification

Low petroleum prices aren’t the only thing affecting CNG’s popularity. The alternative-­fuel market is a crowded one, and the popularity of electrified vehicles has continued to grow in recent years, as OEMs introduce new hybrid and electric models.

Richardson noted there is a potential for growth for CNG as more fueling stations become available. But he doesn’t see much of a future for CNG in the long run. He believes that electric will be the next big powertrain and, until then, diesel and unleaded gasoline will continue to rule. The Future of CNG Is Uncertain

Duckett is a little more wary about the future alternative fuel for heavy-duty fleets. Whether that’s electric, or hydrogen, or some other source, he does not believe that technology will be ready any time soon. For now, he’s sticking to CNG and B-20.