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US 4,957,072 AGranted
Balanced radial engine
OwnerMichael P. Goldowskyinventor
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OwnerMichael P. Goldowskyinventor
Estimating the term…
A low cost multi cylinder radial aircraft engine is composed of an even number of individually functional, single cylinder slider crank model engines. They are mounted to a plate to form equally spaced radially oriented cylinders. In the preferred embodiment, use of standard, low cost, & mass produced two cycles engines are used. This in conjunction with a novel exhaust muffler and throttle mechanism results in a low cost radial engine. The individual engine shafts surround and are parallel to a central output shaft. Pinion gears on each shaft transfer power to a larger sun gear on the output shaft. This gearing synchronizes opposed pistons to reach top dead center at the same time resulting in vibration free piston motion and perfect balance of the entire engine. Said gearing also provides speed reduction for use of large diameter scale propellers. A rear mounted throttle mechanism controls individual carburetor throttles. Each cylinder radially exhausts into a donut shaped exhaust manifold that also serves as a muffler at the front of the engine. It very effectively lowers cylinder exhaust noise by using opposed flow impingement. The muffler also utilizes turbulent gas cooling to greatly reduce exhaust gas temperature and energy. This results in very low noise like its 4 cycle competitor.
A gravity flow fuel delivery sytem for multi-carburetor engines that provides a single fuel mixture adjustment for all carburetors and compensates for fuel head elevation differences between carburetors, incorporating a plurality of fuel tank means with relative elevation differences corresponding to the elevation differences of the respective carburetors to be pressure head compensated, said individual fuel tank means each having outlet conduits that introduce fuel to an individually isolated inlet port of a single hydraulic valve, said valve posessing a single adjustment means and at least one isolated outlet port means matched to a respective one of said inlet ports for each fuel tank means, said valve producing equal and adjustable flow resistances due to movement of said single adjustment means between all the respective inlet and outlet port means in the valve thereby producing equal flow rates from each tank means.
A fuel control valve for multicarburetor engines that provides a single adjustment for apportioning equal rates of flow to all carburetors from a pressurized tank means, said tank means having an outlet conduit that introduces fuel to at least one isolated inlet port formed in said control valve, wherein said valve has a single spool with at least one circumferential groove, equal in number to that of said isolated inlet ports, cut into the spool at the same spacing as that of said at least one isolated inlet port, outlet ports formed in the valve body, each said outlet port serving a respective one of said carburetors, said at least one inlet port lying in a common plane with at least one of said outlet ports and communicating with such through said respective circumferential groove, said spool having cylindrical threads that produce longitudinal movement of the spool relative to the valve body by rotation of the spool, thereby creating variable and equal cross sectional flow areas between said inlet and outlet ports.
Dependencies are inferred from the claim text.