Combustion Engines
Driving with natural gas: NGT (natural gas technology)
In terms of both ecology and economy, natural gas drive is a viable alternative to conventional drive concepts. In comparison with conventional gasoline or diesel fuels, its advantages lie in a lower carbon content and low-emission combustion. Moreover, natural gas engines run very quietly and produce less CO2 than diesel engines.
 
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Mercedes-Benz Sprinter: Natural gas engines comply with the stringent EEV standards.
To date, natural gas vehicles still have the disadvantages of intricate fuel storage in bulky pressure cylinders and a limited filling station infrastructure. Thanks to their bivalent drive units, NGT passenger cars such as the Mercedes-Benz E 200 NGT BlueEFFICIENCY or the B 170 NGT BlueEFFICIENCY can run either on natural gas or on premium gasoline.
 
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Mercedes-Benz Citaro articulated bus with gas drive
The Mercedes-Benz Sprinter NGT BlueEFFICIENCY with bivalent natural gas drive has also been available since 2008. The Mercedes-Benz Citaro CNG is manufactured both as a solo and an articulated bus with natural gas engine; more than 1,600 of these vehicles are already in operation throughout the world. This was the first line-service urban bus with natural gas drive to comply with the EEV (Enhanced Environmentally Friendly Vehicle) exhaust standards. The Mercedes-Benz Econic NGT likewise undercuts the Euro V and EEV limits and is characterized by low noise emissions; around 1,000 of these trucks are on the roads of Europe in municipal service, collecting, and distribution operations. 1,300 natural gas vehicles on the basis of the MT45 walk-in delivery van have been delivered since 2000 by the Freightliner Custom Chassis Corporation (FCCC).
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