DETROIT – Chrysler is actively working on compressed natural gas vehicle technology and expects to begin selling CNG-fueled vehicles by 2017, the Detroit Free Press reported.

The newspaper quoted Bob Lee, Chrysler’s vice president of engine and electrified propulsion systems, who participated at the SAE 2011 World Congress auto engineering convention in Detroit.

In February, Fred Diaz, head of Chrysler’s truck unit, indicated that the automaker was exploring the possibility of adding CNG-powered engines to its Ram truck brand.