The MWfly B22 is a family of
Italian
Italian(s) may refer to:
* Anything of, from, or related to the people of Italy over the centuries
** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom
** Italian language, a Romance language
*** Regional Ita ...
aircraft engines, designed and produced by
MWfly of
Passirana di Rho for use in
light aircraft
A light aircraft is an aircraft that has a maximum gross takeoff weight of or less.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 308. Aviation Supplies & Academics, 1997.
Light aircraft are used as utility aircraft co ...
.
[Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', pages 260-261. Flying Pages Europe SARL, 2015. ]
Design and development
The B22 series are all four-cylinder
four-stroke,
horizontally-opposed
A flat engine is a piston engine where the cylinders are located on either side of a central crankshaft. Flat engines are also known as horizontally opposed engines, however this is distinct from the less common opposed-piston engine design, wh ...
, displacement, liquid-cooled, gasoline engine designs. They all employ single
electronic ignition
An ignition system generates a spark or heats an electrode to a high temperature to ignite a fuel-air mixture in spark ignition internal combustion engines, oil-fired and gas-fired boilers, rocket engines, etc. The widest application for spark i ...
systems and have a
compression ratio of 10.4:1.
Variants
;B22D
:Direct drive model with an output of at 3300 rpm
or at 3500 rpm, or at 4700 rpm.
;B22G
:Geared model with a mechanical gearbox
reduction drive
A reduction drive is a mechanical device to shift rotational speed. A planetary reduction drive is a small scale version using ball bearings in an epicyclic arrangement instead of toothed gears.
Reduction drives are used in engines of all kinds ...
with a reduction ratio of 1.731:1 or 1.958:1 and an output of at 4000 rpm, or at 4700 rpm, respectively.
;B22L
:Model with a mechanical gearbox reduction drive with a reduction ratio of 1.73:1 and an output of at 3950 rpm. By March 2018 the engine was no longer advertised on the company website and seems to be out of production.
;B22R
:Model with a mechanical gearbox reduction drive with a reduction ratio of 2.14:1 and an output of at 4700 rpm. By March 2018 the engine was no longer advertised on the company website and seems to be out of production.
Specifications (B22D)
See also
References
External links
*{{Official website, http://www.mwfly.it/mwfly%20b22%20engines.html
MWfly aircraft engines
Liquid-cooled aircraft piston engines
2010s aircraft piston engines