the diesel engine has demonstrated the lowest specific fuel consumption of any prime mover as low as .26 lb hp hr for very large 2 stroke marine diesels . it uses fuel which is much cheaper and still contains more energy per gallon than gasoline or avgas . decades ago there were several diesel aircraft engines built by guiberson packard rolls royce clerget fiat and others . in the 1930 s the junkers jumo 205 supercharged 2 stroke diesel was used in scheduled transatlantic service between europe and south america ; it had a cruise bsfc of .356 lb hp hr and a specific weight of only 1.5 lb hp . jumo diesel engines delivered full sealevel power up to 40 000 feet and powered aircraft flying at 50 000 feet . following these almost forgotten examples we are developing a new piston engine for general aviation the zoche aero diesel . it is a direct drive air cooled radial two stroke cycle diesel with 4 cylinders per row . it features two stage charging turbo and supercharger direct fuel injection and intercooling . compared to the opposed cylinder spark ignited aircraft engine zoche aero diesels offer many advantages the engine has half the specific weight half the frontal area and burns less fuel . this leads to remarkable improvements of aircraft parameters payload range and speed will be markedly better environmentally progressive low co2 emissions due to low fuel consumption low nox due to two stroke principle low soot and unburnt hydrocarbon emissions due to modern high pressure injection . diesel and jet fuels contain no toxic substances like lead benzene or scavengers . no fuel availability problem wordwide very low noise emission due to two stroke and turbocharging . no electromagnetic interference . very low vibration level the 4 cylinder bank can be 100 % balanced for all rotating and reciprocating inertias . torque vibration is minimal due to one power pulse per cylinder per revolution . full aerobatic pressure lubrication . greatly reduced fuel costs zoche aero diesels burn fewer lb hp hr ; diesel or jet fuel has more lb gallon and costs less per gallon . easy to operate one power lever only . no mixture no alternate air no aux fuel pump no magneto switches no mandatory temperature boost or power restrictions . good reliability and low maintenance cost due to the lack of a reduction drive the very low parts count and the use of reliable diesel components . streamlined installation without any hoses . high inflight reliability no carburetor icing no magneto or spark plug problems no vapor lock . turbine inlet temperature is so low that it needs no monitoring . even cylinder head temperatures are not critical . safe electrical power directly driven overload protected starter generator no belts gears or bearings . reduced hot and high problems sealevel power at least up to 9 000 feet . reliable starting and inflight restarting through powerful and highly efficient starter generator . cold start and acceleration to 2 500 rpm within a second has been demonstrated . dramatically reduced fire hazard diesel fuel has a much lower flammability . exhaust manifold temperature is about 720 f lower . no rubber hoses all ducts for oil hydraulics and manifold air are integrated into the castings . the very compact zoche aero diesel incorporates the latest cylinder technology as well as refinements like tungsten counterweights and full aerobatic pressure lubrication . the zoche aero diesel s high efficiency reduces the amount of rejected heat thereby minimizing cooling air requirement . cooling problems are further reduced by the fact that there are no areas in this diesel engine which demand such exact cooling as the cylinder head of a spark ignited engine . charge air pressure is generated by a combination of a highly efficient mechanical blower and a newly developed advanced turbocharger reducing power loss at altitude . the quadruple flow compressor scroll is integral to the monobloc intercooler resulting in a very high efficiency of the turbocharger and intercooler installation . the intake manifold is an integral part of the crankcase casting . the fuel injection pump together with its feed pump the fuel filter and all connecting plumbing are integrated into the crankcase assembly further reducing the parts count and improving reliability . the integrated dry sump oil reservoir features a sight glass for easy inspection . more info specifications zoche aero diesels brochure pdf 5 3 mb test bench video pictures gallery frequently asked questions for more information about our product please consult our frequently asked questions list or send us an e mail .