Abstract

TESTS are reported from Japan on the use of soybean oil as Diesel fuel in a 12-horsepower engine of 150-mm. bore and 240-mm. stroke, running at 500 r. p. m. Because soybean oil has a higher viscosity, some difficulty was experienced at first in getting it to flow through the fuel pipe. This trouble was overcome by passing through some of the Diesel cooling water to heat the fuel tank and supply line. Although fuel consumption was greater than with the usual Diesel oils owing to the lower calorific value of soybean oil, results showed that starting was easier and that there were less knocking and a smaller ignition lag. Power output and thermal efficiency were less than with standard Diesel oil, but not so low as was expected. Putting Vitamins in Their Place Correction IN THE literature cited for this article [NEWS EDITION, 18, 758 (September 10, 1940)] the U. S. Patent referred to ...

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