Roush CleanTech is the first propane autogas fuel system manufacturer to receive the Environmental Protection Agency’s (EPA) and California Air Resources Board’s (CARB) heavy duty-onboard diagnostics certification for all its engines, the company announced.
Until the 2018 model-year, alternative-fuel vehicles had been exempt from this certification, but are now held to the same requirements as gasoline vehicles.
“Vehicles powered by a fuel other than gasoline or diesel should no longer be considered an alternative,” said Todd Mouw, president. “As shown by the regulatory agencies decisions to require all fuels in its HD-OBD certification, propane autogas, and others like compressed natural gas are moving into the mainstream.”
This HD-OBD certification applies to all vehicles over 14,000-pounds GVWR. The onboard monitors will now track and report out the continuing compliance of the emissions performance of the vehicle, as they have since 2016 for gasoline vehicles. Passenger cars and light-duty vehicles have come equipped with onboard diagnostic systems since the 1990s.
All of Roush CleanTech’s propane autogas-fueled vehicles with Ford 6.8L 2-volt and 3-volt engines, including medium-duty fleet vehicles and school buses, are covered under the CARB HD-OBD certification. The 3-volt engine is also the first and only propane autogas engine available in Class 4-7 vehicles certified to the optional low nitrogen oxide level of 0.05 g/bhp-hr.
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