The Journal Of The Society Of Automotive Engineers Vol 11

Excerpt from The Journal of the Society of Automotive Engineers, Vol. 11: July, 1922 Chairman 0. C. Berry opened the session by calling on W. James, of the Bureau of Standards, to present his paper on fuel-volatility Research at the Bureau of Standards, with demonstration of test-car equipment. Mr. James's talk was profusely illustrated with lantern slides which showed the various devices that have been adopted by the Bureau in connection with its fuel-research program. Among the devices illustrated and described briefly by Mr. James were the accelerometer, the velocity recording instrument, the oil and carbureter tester, draw bar dynamometer, and a multiple recorder. M. C. Horine inquired what data Mr. James had on the effect of friction of the springs. Mr. James replied that in driving at a uniform speed along level stretches of road it is possible to get a zero independent of spring action. Chairman Berry discussed calibration on level roads, and noted that inertia effect is eliminated largely because there is very little movement of the mercury itself in the accelerometer. The effect of temperature on the accelerometer can be practically eliminated by making the free ends wide. Mr. Chase was inclined to think that inaccuracies would creep in owing to the instability of the pens due to irregularities in the road. Mr. James replied that the friction of the pens made very little difference owing to the motion of the paper and the vibration of the car. The pens do not stick, thus avoiding the resulting reduction of sensitivity. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.