The MTH R 422-CG is an
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...
n
aircraft engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many ...
, designed and produced by
MTH Engines of
Mattsee
Mattsee is a market town at the eponymous lake in the district of Salzburg-Umgebung in the Austrian state of Salzburg.
History
About 765 Duke Tassilo III of Bavaria established the Mattsee Benedictine Abbey, which became a part of the Diocese of ...
for use in
ultralight aircraft
Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and conventional three-axis control aircraft with ailer ...
.
[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 engine is a twin-cylinder
two-stroke
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a Thermodynamic power cycle, power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being comple ...
,
in-line, displacement, liquid-cooled, gasoline engine design, with a toothed 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 t ...
with a reduction ratio of 3.0:1. It employs dual
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 engine#Ignition, rocket engines, etc. The widest ...
systems and produces at 6500 rpm, with a
compression ratio
The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values.
A fundamental specification for such engines, it is measured two ways: the stati ...
of 12:1.
Specifications (R 422-CG)
See also
References
External links
*{{Official website, http://www.mth-engines.at/
MTH aircraft engines
Two-stroke aircraft piston engines
Liquid-cooled aircraft piston engines
2000s aircraft piston engines