Method for preheating aircooled, aircraft engines

Details Method for preheating aircooled, aircraft engines Method for preheating aircooled, aircraft engines

1973-09-14

1976-04-27

Bartis, A.

Electric heating

Heating devices

Combined with diverse-type art device

123122F, 1231425E, 184104A, 219523, H05B 100, F02N 1702, F01M 502

Patent

active

039537072

ABSTRACT:
An aircooled aircraft engine is preheated prior to starting by the insertion of electric heating devices into the blind holes, normally provided for the reception of thermocouples, in the metal castings of the cylinder heads immediately adjacent to the spark plugs. The heating devices are of such size and shape that the heating devices are entirely confined in the metal wall of the cylinder casting so that when energized substantially all the heat is transferred to the castings immediately adjacent the spark plug. The heating devices are energized for a sufficient time prior to starting to generate enough heat to prevent frosting of the spark plug, prevent condensation and improve vaporization of fuel when starting the engine. Additional electric heating devices may be inserted into drain hole of the oil sump and/or the oil suction screen in the sump for simultaneous energization with the heating devices in the cylinder heads whereby heat is supplied to the engine oil to facilitate proper lubrication of the cylinders when starting the engine.

REFERENCES:
patent: 1211935 (1917-01-01), Groshans
patent: 1332970 (1920-03-01), Berres
patent: 1377352 (1921-05-01), Johnson
patent: 1395949 (1921-11-01), Eckman
patent: 1416897 (1922-05-01), Simon
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patent: 1553026 (1925-09-01), Brown
patent: 1784541 (1930-12-01), Rouillard
patent: 1794891 (1931-03-01), Gerhardt
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patent: 1817850 (1931-08-01), Schwalbach
patent: 2000825 (1935-05-01), Davies
patent: 2311146 (1943-02-01), Wiegman
patent: 2487326 (1949-11-01), Freeman
patent: 2680185 (1954-06-01), Basile
patent: 2834864 (1958-05-01), Grinde
patent: 3213263 (1965-10-01), Steenbergen

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