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When will a diesel be available for my aircraft? |
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News, facts, and comments on the coming revolution for piston-engine aircraft.News of December 30, 2008SMA continues development of diesel engine
 French engine manufacturer SMA continues to pursue development of its aviation diesel engine SR 305-230. Alain Pierre Deniau, Senior Vice President of the SMA subsidiary in the USA recently stated at the AOPA Expo: ”Both the EU as well as the American legislator are continuously tightening exhaust regulations. This means the end of avgas sooner rather than later.” SMA is absolutely confident that its diesel engine - which runs on Jet-A fuel - will produce lower exhaust gas and noise emissions than current aviation powerplants of this class. The latest improvements of the SR 305-230 encompass twin exhaust gas driven turbochargers, a new intercooler, as well as improved cooling due to optimized engine ventilation. In addition the starter and the alternator were renewed and the cylinder heads were overhauled. SMA is continuing to diligently collect field data. Currently there are 44 engines of type SR 305-230 in operation. No incident implicating the engine has been reported. The oldest of them has accumulated 763 flight hours. A TBO, however, has not yet been defined. For the achievement of type certificates and supplemental type certificates (STCs) for installation of the SMA diesel in further aircraft types including the Cessna 182, Maule-9 and various Piper models the manufacturer is continuing the cooperation with its partners. Potential candidates for the installation of this powerplant are basically all single and twin-engine aircraft with engine ratings between 200 and 700 hp, according to Deniau. posted at 11:22 AM News of December 10, 2008Introducing the CMD GF56 Diesel Engine for General Aviation
 CMD is an Italian firm active in design engineering services for the marine, automotive and general aviation applications of internal combustion engines using all fuels including diesel. See: www.cmdengine.com. It is also manufacturing parts and components, and the range of FNM marine diesel engines. Some engines are based on FIAT blocks and some other are the marine version of FIAT engines (e.g. FIAT 1.3 Multijet for marine applications). CMD developed two aero engines: the GF56 and the ULM 220. The ULM 220 is a 4-cylinder gasoline air-cooled engine of 2.2 liters and 106 kW developed for light aircraft (ULM and VLA). In 2000, CMD initiated design for an innovative aeronautical diesel engine. GF56 has been designed and developed by CMD in cooperation with major Italian universities, the National Research Center and the Italian Aerospace Research Center (CIRA). CMD started the certification process of GF56 on February 2008 CMD sending application in EASA for DOA and engine TC. The first Type Certificate Board Meeting with the selected EASA Team members has been held on May 15th, 2008. This meeting formally signed the starting point of the certification process. GF56 is now accomplishing the development tests in order to freeze the engine configuration for the prototypes dedicated to the certification tests, which will begin in 2009 within a new plant dedicated to the aviation programs. Flight tests will also be performed. The GF56 main natural market is retrofitting existing airplanes. Its engine mount is designed to be compatible with the attachment points of Cirrus aircraft. Main features are: 6 cylinders horizontally opposed. Direct drive-Bore x stroke 106x105mm-Total displacement 5.56 liter. Power 300 HP at 2400 rpm. Power-to-weight ratio of 1 kg/kW. 2-stroke Diesel uniflow cycle. Roots supercharging system with integrated wastegate valve. Liquid cooling. Capable of using automotive diesel fuel or Jet A1. Injection by high pressure Common Rail system. Low piston speed (reduced rpm speed). Low MAP (Mean Effective Pressure). Two camshafts (no long rods), timing with cascade gears. Modular cylinders enclosed in one integral rigid and light semi engine block allowing easy development of a series of engines from 2 to 8 cylinders. Cylinder barrels and cylinder heads form a unique integrated element called “cartridge”. Cartridges and crankcase are held together with studs. A high pressure injection pump is mounted at rear of the engine. It feeds the common rail that distributes the fuel to the electro-injectors located on each cylinder-head via steel fuel lines located on top of the engine. Contact: Mariano Landi, Head of Airworthiness, Technical Department, C.M.D. Costruzioni Motori Diesel, Direzione Generale (Head Office) Strada Statale 87, km 23.300 - 81020 S. Nicola La Strada (CE) – Italy. Tel: +39-0823-424055. Email: mariano.landi@cmdengine.com posted at 11:52 AM |
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