Natural Gas Cars and Vehicles

Compressed natural gas (CNG) and liquefied natural gas (LNG) are considered alternative fuels under the Energy Policy Act of 1992. Natural gas cars are either fueled exclusively with CNG or LNG  or are capable of natural gas and gasoline fueling.

What is a natural gas car?

Dedicated natural gas cars are designed to run only on natural gas; bi-fuel natural gas cars have two separate fueling systems that enable the vehicle to use either natural gas or a conventional fuel (gasoline or diesel). In general, dedicated natural gas cars demonstrate better performance and have lower emissions than bi-fuel vehicles because their engines are optimized to run on natural gas. In addition, the vehicle does not have to carry two types of fuel, thereby increasing cargo capacity and reducing weight.

2008 Honda Civic GX Natural Gas Car

Natural gas vehicles are fueled with compressed natural gas (CNG) or liquefied natural gas (LNG). These fuels are considered alternative fuels under the Energy Policy Act of 1992 and qualify for alternative fuel vehicle tax credits. As a new twist, tests are being conducted using natural gas vehicles fueled with HCNG, a blend of CNG and hydrogen.

Compared with cars fueled with conventional diesel and gasoline, natural gas cars can produce significantly lower amounts of harmful emissions. In addition, some natural gas vehicle owners report service lives two to three years longer than gasoline or diesel vehicles and extended time between required maintenance.

The driving range of natural gas cars generally is less than that of comparable gasoline- and diesel-fueled vehicles because of the lower energy content of natural gas. Extra storage tanks can increase range, but the additional weight may displace payload capacity. Natural gas car horsepower, acceleration, and cruise speed are comparable with those of an equivalent conventionally fueled vehicle.

Other benefits of the cars include increasing U.S. energy security and paving the way for fuel cell cars.

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One Response to “Natural Gas Cars and Vehicles”

1. Hybrid Electric Vehicle Basics says:

   January 18, 2009 at 10:35 pm

   [...] electric vehicles of the future could use alternative fuels such as biodiesel, natural gas, or ethanol. The flexibility of HEVs makes them well suited for fleet and personal [...]