Propane Autogas Engine Certified to Lowest NOx on the Market

The Auto Channel

ROUSH CleanTech has developed the first propane autogas engine available in class 4-7 vehicles and Blue Bird Type C buses certified to the optional
low nitrogen oxide (NOx) level .05 g/bhp-hr. These new Environmental Protection Agency- and California Air Resources Board-certified propane engines
are 75 percent cleaner than the current emissions standard.

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