干旱区生态环境知识资源中心(Arid): Correction of Temperatures of Air-Cooled Engine Cylinders for Variation in Engine and Cooling Conditions

Arid

报告编号	NACA-TR-645
来源ID	NTRS_Document_ID: 19930091720
	Correction of Temperatures of Air-Cooled Engine Cylinders for Variation in Engine and Cooling Conditions
	Schey, Oscar W; Pinkel, Benjamin; Ellerbrock, Herman H , Jr
英文摘要	Factors are obtained from semiempirical equations for correcting engine-cylinder temperatures for variation in important engine and cooling conditions. The variation of engine temperatures with atmospheric temperature is treated in detail, and correction factors are obtained for various flight and test conditions, such as climb at constant indicated air speed, level flight, ground running, take-off, constant speed of cooling air, and constant mass flow of cooling air. Seven conventional air-cooled engine cylinders enclosed in jackets and cooled by a blower were tested to determine the effect of cooling-air temperature and carburetor-air temperature on cylinder temperatures. The cooling air temperature was varied from approximately 80 degrees F. to 230 degrees F. and the carburetor-air temperature from approximately 40 degrees F. to 160 degrees F. Tests were made over a large range of engine speeds, brake mean effective pressures, and pressure drops across the cylinder. The correction factors obtained experimentally are compared with those obtained from the semiempirical equations and a fair agreement is noted.
英文关键词	AIRCRAFT ENGINES CYLINDERS AIR COOLING TEMPERATURE CORRECTION COMPUTATION EQUATIONS CLIMBING FLIGHT TAKEOFF AIRCRAFT MANEUVERS ATMOSPHERIC TEMPERATURE FUEL-AIR RATIO EXPERIMENTATION THEORIES COMPARISON
出版年	1939
语种	英语
国家	美国
URL	http://hdl.handle.net/2060/19930091720
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/258247
推荐引用方式 GB/T 7714	Schey, Oscar W,Pinkel, Benjamin,Ellerbrock, Herman H , Jr. Correction of Temperatures of Air-Cooled Engine Cylinders for Variation in Engine and Cooling Conditions,1939.