This Tiny Engine Could Make Leaf Blowers Sound Less Like Jets

 

 

 

 

 

 

” Big engines like the 707-horsepower monster Dodge put in the Challenger Hellcat or Volvo’s little four-cylinder that makes 425 ponies get all the attention these days. But there are millions of tiny engines doing tiny things (think garden trimmers, leaf blowers, that sort of thing) that we never give much thought to. But just as there are engineers pondering how to make big engines more powerful, so too are there engineers pondering how to make tiny engines more powerful.

   Some of those engineers work at the engine development firm LiquidPiston, which has created a 70cc pistonless rotary engine that it expects to produce five horsepower at an astounding 15,000 RPM—in a package 30 percent smaller than a  similar piston engines. Now, five horsepower doesn’t sound like a lot, but it’s more than adequate for the applications such an engine might be used in. And further refinement of the prototype could, of course, bring more power.

  What’s more interesting is how those five ponies are produced. “

 

Read more at Wired