et al., "Development of Free
Piston Engine Linear Generator System Part 1 - Investigation of Fundamental Characteristics," SAE Technical Paper 2014-01-1203, 2014, doi:10.4271/2014-01-1203.
At full load operation, oil consumption with stepped
piston engines has been observed to be typically 75% lower than conventional modern two stroke cycle engines.
The Exhaust gas temperature increases by 12.6% for multilayered ceramic coated
piston engine when compared to uncoated
piston engine at full load conditions.
There are four basic methods we can employ to manage and monitor condition of the cylinders on our
piston engines. First and simplest--at least when considering the tools required--is a close, detailed visual inspection.
Jets can generate more power than
piston engines, but they are less fuel efficient.
"Linear free
piston engines can capture a much greater proportion of the energy contained in the fuel burnt, not only because the linear gas expander extracts electrical power directly from the expansion stroke, but also by optimising the motion of the piston to improve combustion efficiency."
That Pan Am Clipper was powered by four Pratt & Whitney
piston engines. Although emblematic of the pioneering age of air travel, those commercial aviation
piston engines were prone to failure.
A big advantage of using Wankel engines in aviation is their small size in comparison with
piston engines with similar power, also their quick response to throttle movements.
Furthermore, he says, nearly all of the latest generation of
piston engines come factory-certified to operate on mogas.
It will also help Continental Motors compete globally in markets such as the one in China, where demand for
piston engines is expected to grow over the next decade.
We were used to seeing all sorts of unusual aircraft taking off such as ex-bombers with two of their four
piston engines replaced by jet engines.
They describe the planes that made commercial flight possible, from the earlier propeller-driven aircraft to the Lockheed Constellation to
piston engines and Douglas and Boeing designs.