The efficiency of his design is further improved by using the moving piston to drive water through a special steam nozzle, which increases the effectiveness of the heat transfer between the inside and outside of the reactor.
After just six years of selling FAA-certified aircraft, the Duluth, Minn. privately held company in 2005 surpassed Cessna in sales ofpiston aircraft, as measured by dollar volume.
EcoMotors, a Detroit area startup backed by Khosla Ventures and Bill Gates, is one of several American companies bankrolled by Silicon Valley venture capitalists that are developing opposed piston engines.