A Cleaner Two-Stroke Engine?

Millions of homeowners in the Great Lakes region use two-stroke
engines. They’re found in chain saws, grass trimmers, and lawn mowers.
But those engines are major polluters. Now government regulators have
finally begun to focus on the pollution these engines cause, and so have
manufacturers like the John Deere Company. Deere is bringing new
technology to the marketplace. It’s called compression wave injection,
and Deere says it makes two-cycle engines produce much lower emissions.
But not everyone is happy with the result. The Great Lakes Radio
Consortium’s Herb Trix reports: