Jabiru 2200 Engine: What We Never Know?

Jabiru is an air-cooled aircraft engine that is aspirated with pushrod four-stroke. The engine has been used for decades by experimental and certified lightweight aircraft all over the world. With the four-cylinder 65-hp engine’s rapid success, Jabiru is now a prominent option for aircraft manufacturers as it offers a better alternative to 2-stroke engines.

Recently, the Jabiru market has expanded with the introduction of the 120 horsepower, 6-cylinder engine. The 100-125 hp certified engine now eliminates more than 50 pounds off the forward firewall package. Now numbering at over 5,000 engines worldwide, the Jabiru 2200 model has thousands of fleet hours for flight training and recreational flying operations.

Jabiru 2200 Engine Design and Performance

Jabiru 2200 engine boasts of superior electronic systems as far as airplane engines are concerned. The company remains steadfast in creating aircraft engines that do not rely on electricity to run efficiently. Jabiru’s 2200 engine’s fuel and ignition systems are not dependent on the aircraft’s electrical system. That helps to eliminate the use of alternators and batteries.Jabiru 2200 engine set up offers a superb performance of thousands of quality flight hours and still retains its simplicity.

Engine Construction Specifications

Jabiru 2200 engines are constructed in small quantities using advanced Computer Numerical tools or CNC. Most of the components used to manufacture the engine originate from Southern Queensland, and an expansive network makes them of small high technology companies. What’s more, the cylinder, coil mounts, crankcase halves, gearbox cover, crankshaft, and starter motor housing are assembled using advanced CNC machine tools.

Jabiru’s 2200 engine cylinders are made from chrome molybdenum alloy steel, and the piston runs directly through the engine’s steel bore. More importantly, the crankshaft also boasts of molybdenum steel creation. The camshaft was installed by a specialized Jabiru 2200 engine camshaft manufacturer. On the other hand, the propeller is crankshaft-driven, which means it does not require gearbox reduction.

The small, lightweight design helps to keep low maintenance costs. The crankshaft comes with an adjustable propeller flange that allows easy installation of the propeller shaft extension. Moreover, the engine has an alternator fixed in position using earth magnets, thereby providing alternating current mainly as an accessory drive.

The flywheel consists of the alternator that drives directly to the crankshaft. However, the engine’s ignition system has an electronic system: two coils installed on the flywheel and energized by earth magnets. That way, the attractions pass on the locks to create a high voltage current that causes spark plugs on the cylinder head. What’s more, the ignition system has fixed timing and removes the inconvenience of timing adjustment.

Jabiru 2200 Specifications

Maximum Speed3300rpm*
Power Capacity 80hp (60Kw)*
Weight 62.3kg*
Fuel DeliveryCarburetor
Engine Type Direct drive, Flat four boxer
Mounting FlangeRotax 4in PCD with 13mm bush

Crankshaft and Pistons

Jabiru 2200 engine’s crankshaft has a double bearing between the main bearing and propeller flange end. That means it does not include flying webs. The thrust bearings are located at the double front bearing that allows pusher or tractor installation.

All the pistons are manufactured specifically to work on the Jabiru 2200 engine. Made by a specialized Jabiru 2200 engine manufacturer, the pistons have three rings, and the rings are cast iron, which complements the molybdenum chrome cylinder bores. The valves are stem dia (7mm) and include pushrods. Furthermore, the valve rockers are expertly forged and mounted steadily in the shaft using a lubricated brush.

The replaceable valves are made from nickel steel and then shrunk into aluminum cylindrical heads. And the valve gear and its components are well lubricated, particularly the hollow pushrods. With internalized gear pups, the camshaft comes with a spin-on automotive filter that offers optimum engine lubrication. But all installations require a working air cooler that meets all the desired oil temperature standards.

Furthermore, Jabiru’s 2200 aircraft engines have two working RAMAIR cooling ducts that directly cool the engine. They help direct air straight from the engine’s propeller to all the critical areas, mostly the barrels and cylinder heads. For that reason, these cooling ducts are a bonus to the engine installer or home builder since they eliminate the need to create baffles.

Cleaner installation

Since the Jabiru 2200 engine does not require baffles or a plenum chamber, this ensures a more manageable and “cleaner” installation. That, in turn, allows easier inspection and maintenance of all the engine components. So, the engine installation is done by the Jabiru team of experts, which offers convenience. As an alternative, RAMAIR ducts allow for pusher or tractor configurations, but special ducts can be used for specific installations.

The Jabiru 2200 engine comes with a starter motor with low vibration levels. However, it is supported by rubber shock mounts that have been attached steadfastly to the engine at the rear. The designers also made a standardized bed mount.

The fuel system consists of a compensating BING pressure carburetor. For proper carburation, the air/fuel mixture is then transported directly to the plenum chamber, where the cross is first warmed before it enters the induction tubes that have been attached to the cylinder heads. Moreover, the muffler and exhaust system are made of stainless steel, ensuring quiet operation at 62Db.

Nonetheless, some owners might want to install vacuum instruments on the aircraft. Customization is easy since the Jabiru 2200 engine consists of a vacuum pump drive directly installed on the crankshaft at the rear.

Jabiru 2200 aircraft engines are manufactured with the highest quality assurance standards to the ASTM F2279. All the components meet the quality assurance standards under the Australian Civil Aviation Safety Authority (CASA).

Jabiru 2200

Engine malfunction issues

There were about 322 reported Jabiru’s 2200 engine malfunctions that happened when the aircraft was air bound. Aircrafts powered by Jabiru 2200 engine have experienced frequent engine malfunctions with at least 130 reported cases over 6 -years period. Based on recent studies, malfunctions or engine failure in Jabiru’s 2200 engine powered aircraft is expected. That means Aircrafts powered by Jabiru 22 engines have a higher likelihood of engine malfunction or failure than other types of engines.

Jabiru 2200 engine manufactures have therefore required aircraft owners to install thicker belts and replace the nuts. Additionally, aircraft owners have been requested to upgrade and install thicker and newer through-bolts. Jabiru engineers suggest that varying crankcase frequencies in specific engine configurations cause these failures. For example, Jabiru’s 2200 engines with old through-bolt installations are at risk of defects and loss.

That said, individual reporting is encouraged to study the effectiveness of Jabiru 2200 engine data analysis. The manufactures encourage operators to continually report all Jabiru 2200 engine malfunctions and failures, with follow-up engine inspection reports.

Jabiru’s applications

Jabiru 2200 engine is often installed in small aircraft used for flight training, surveying, recreational flying, commuting surveillance, and rural property management. Jabiru 2200 engine is manufactured by advanced Fiber Reinforced Plastic technologies (FRP). It is a better engine system that is lightweight and still offers the same structural integrity as other engines. Additionally, it features a clean and improved aerodynamic design.

The Jabiru 2200 engine has 4- cylinders, 4-stroke of about 2200cc or 6 -cylinder 3300 cc that is air-cooled. The Australian factory designed this engine especially for use in small aircraft. It also consists of a dual electronic ignition that allows high-speed cruise with low fuel consumption. The Jabiru 2200 engine performs exceptionally well and delivers long-endurance, making air touring easier for licensed pilots.

Jabiru aircraft engine – Designed for superior performance

Australia is at the forefront in the competitive aviation industry, particularly in small aircraft engines. As a pioneer in the 20th century in the FDR or flight data recorder’s manufacture, the country has proven to be a respectable leader in aviation.

With the invention of the Jabiru 2200 engine and the corresponding advancements to improve the different components of the engine, Australia continues to shine in the aviation industry. The most significant improvement of the Jabiru 2200 engine is that it does not use fuel injection, enhancing its reliability and simplicity.

On the other hand, Carburettors work to supply the right amount of atomized fuel to the engine, igniting in the cylinders. Nonetheless, carburetors do not compensate for any changes in atmospheric density and that means atmospheric changes allow the engine to run more prosperous and cleaner than usual.

The carburetor cannot cause balanced fuel consumption between each cylinder, which affects the induction system’s quirks. As a result, these deficiencies cause issues, which often depends on the quality of the mixture. If it is too lean or too rich, spark plugs erupt, resulting in high fuel consumption. Over-lean power can cause overheating and potentially lead to engine failure.

So, to ensure the Jabiru 2200 engine performs optimally at all times, check for induction leaks and fuel exhaust. Often, the carburetor has dust impurities that can blow compressed air against the inward airflow. When the engine operates in dusty conditions, ensure you clean the air filters regularly at intervals other than the recommended normal conditions.

A clogged filter can ultimately affect the Jabiru engine’s performance and might lead to engine failure. So, check the air ducts and engine baffles to monitor functionality. As a suggestion, you can use the compression gauge technique to measure the engine’s compression. Readings are calculated at the full-throttle value of oil temperatures between 30 °C and 70 °C. Therefore, when the readings are lower than 90 psi, check the valves, cylinders, pistons, and cylinder head.

Conclusion

To address all the issues common in the Jabiru 2200 engine, the company announced that it had manufactured an advanced mixture control mechanism and the production of the Gen4 engine. These improvements work to enhance the mixture done by the carburetor and ensure each cylinder performs optimally. Overall, the Jabiru 2200 aircraft engine is recommended for small aircraft at is lightweight and fuel-efficient.

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