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.