Leaf Blowers: Extreme Polluters

  • By 2020 in California, gas-powered lawn equipment will be the biggest source of ozone/smog pollution in the state (SOURCE: California Air Resources Board)
  • Explanation here: The problem with small engines is that they generally have a primitive design and little or no emissions control technology. While cars and trucks have leaped ahead with catalytic converters, advanced combustion techniques, and computer-controlled fuel injection, small engines are still using technology that was outdated in the 1960s. Worst of all are two-stroke engines, which require oil to be mixed in with the fuel, about a third of which is forced out the exhaust instead of being burned, and so produce immense pollution as a basic function of operating.
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