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| Company with limited liability | |
| Industry | Aerospace |
| Headquarters | Ober-Olm , |
Key people | Liliana and Martin Manthey |
| Products | Engines, Engine maintenance, Aviation Products |
| Website | Sauer Flugmotorenbau |
Sauer Flugmotorenbau (Sauer Aircraft Engines) or "Sauer" is a German manufacturer of aircraft engines based at Ober-Olm in Germany.
The first certified 4 stroke engine entered the market in 1987. The 4 stroke engines are certified according to CS-22 Subpart H [1] for use in motorgliders, CS-LSA [2] and CS-VLA [3] type of aircraft. They also makes engines for use in ultralights and Homebuilt aircraft. The production consist of 4 stroke engines based on VW "Type 1" engines (commonly known as air-cooled beetle engines) and based on the later Wasserboxer. Sauer also makes 2-stroke engines. [4] There have been development of a turbocharged 2 cylinder 4 stroke engine based on the Weber MPE [5] "recreational engine" in 2009-2010, but no commercial available engine exists to date. [6]
There are two main versions of the boxer 4-stroke engines. Those with the casing of air-cooled beetle engines, and those with the largely similar, but stronger Wasserboxer casing used in late VW vans before the Volkswagen Transporter (T4).
Even though the Wasserboxer engine is water-cooled, this involves only the cylinders and the top. The casing has no water lines, it is only stronger built. This makes it possible to convert the Wasserboxer "back" to an air-cooled engine. The benefits of this conversion is the added strength, and the size of the Wasserboxer casing will accept larger cylinders. In general it becomes a much more robust engine compared with engines using the original air-cooled casing. [7] These "water to air" converted engines are sometimes referred to as the misnomer oxyboxer in automobile VW engine circles.
Various engines from 14.9 to 100 HP, single cylinder to 3 cylinder. [4] These engines are re-branded Hirth engines built by Sauer. [8] The specifications are identical to the corresponding Hirth engine.
The naming format changed in 2003. The current naming format is: S aaaa-(b)-(XYZ)c
Whereas the old naming format found in older engines is: [13]
There is no defined naming for these engines from the manufacturer, but they all are named according to:
Limbach Flugmotoren is a German company that produces aircraft engines.
The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. It features liquid-cooled cylinder heads and air-cooled cylinders. Originally equipped with carburetors, later versions are fuel injected. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. Originally available only for light sport aircraft, ultralight aircraft, autogyros and drones, the 912-series engine was approved for certified aircraft in 1995.
The Jabiru 3300 is a lightweight four-stroke, horizontally opposed "flat-six" air-cooled aircraft engine produced by Jabiru Aircraft. The engines are direct drive and fitted with alternators, silencers, vacuum pump drives and dual ignition systems as standard. The engine is used to power homebuilt and ultralight aircraft.
The Jabiru 2200 is a lightweight naturally aspirated, pushrod four-stroke, flat four, air-cooled aircraft engine produced by Jabiru Aircraft.
The Volkswagen air-cooled engine is an air-cooled boxer engine with four horizontally opposed cast-iron cylinders, cast aluminum alloy cylinder heads and pistons, magnesium-alloy crankcase, and forged steel crankshaft and connecting rods.
The ULPower UL260i is a family of aircraft engines, produced by ULPower in Belgium.
The Hirth 3502 and 3503 are a family of liquid-cooled, in-line twin-cylinder, two-stroke, carbureted aircraft engines, with optional fuel injection, designed for use on ultralight aircraft and small homebuilts.
The 2si 215 is a family of single-cylinder, fan-cooled, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft.
The Sauer S 2400 UL is a 4 stroke aircraft engine for homebuilt and ultralight aircraft.
The Sauer S 2200 UL is a 4 stroke aircraft engine designed for homebuilt and ultralight aircraft.
The Sauer S 1800 is a family of German four-stroke aircraft engines, certified according to JAR 22-H
The Sauer S 1800 UL is a four stroke aircraft engine designed for homebuilt and ultralight aircraft.
The Sauer S 2100 ULT is a turbocharged four-stroke aircraft engine for homebuilt and ultralight aircraft.
The Sauer S 1900 UL is a 4 stroke aircraft engine for homebuilt and ultralight aircraft.
The Sauer S 2100 is a family of four-stroke aircraft engines, certified according to JAR 22-H
The Sauer S 2500 is a family of four stroke aircraft engines certified according to JAR 22-H
The Sauer S 2500 UL and Sauer S 2500 ULT are four-stroke aircraft engines for homebuilt aircraft
The Sauer S 2700 UL were a 4 stroke aircraft engine for homebuilt aircraft
The Hirth 3002 is a German aircraft engine, that was designed and produced by Hirth of Benningen for use in ultralight aircraft.
The LSA-Engines LSA850 is a family of German aircraft engines, produced by LSA-Engines of Berlin for use in light-sport aircraft.
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