Experimental Studies on the Gas Leakage of the Farm Diesel Engine

Abstract

By fitting the cylinder with various sizes of leakage-hole, the effect of the leakage of working gas upon the faculty of diesel engine was investigated, and the following facts were found.
1. The amount of fuel consumption (gr/hour) advances owing to the increase of gas leakage, but each minimum fuel consumption (gr/IP-hour) is plotted on the same out-put of maximum thermal efficiency. (Fig 2).
2. Maximum horse-power diminishes linearly in proportion to the increase of cross-sectional area of leakage-hole as far as the same amount of fuel is supplied.
3. For practical use, the faculties of diesel engine are not almost affected by the use of leakage hole less than 1mmφ.
4. The amount of piston ring blow-by and the temperature of exhaust gas are fluctuated with close reference to the width of leakage area, r. p. m. and load.
5. The relation between the degree of leakage temperature and the declination of properties of oil. is given.