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Viewing 15271 to 15300 of 15301
1920-01-01
Technical Paper
200009
BENJAMIN LIEBOWITZ
The five fundamental criteria of the performance of a motor vehicle as a whole are stated. Riding comfort is investigated at length with a view to determining methods of measurement of the two classes of vehicle vibrations that affect the riding qualities of a car, so that suitable springs can be designed to overcome them. The underlying principles of the seismograph are utilized in designing a specialized form of this instrument for measuring vehicle vibrations, the general design considerations are stated and a detailed description is given. This is followed by an explanation of the methods used in analyzing the curves obtained, thus making possible a standardized measurement of riding comfort. The factors determining riding comfort are then analyzed in connection with spring-development work, the most important are summarized and the preliminary experimental results of those directly determined by the seismograph are outlined.
1919-01-01
Technical Paper
190038
P J DASEY
THE rapid development of heavy-duty trucks and farm tractors has made it necessary for manufacturers of engines used in such automotive apparatus to face problems regarding which there is no past experience to fall back upon. The necessity in both types of engine for maximum strength in all parts carrying excessive loads constitutes a problem of great importance, but in addition to it are others of the proper utilization of fuels at present available, lubrication under excessive load conditions over long periods of time; and, of nearly as much importance, the relation of fuels to lubricants and the effect of fuels upon lubricants. Moreover, information is to be acquired regarding the value of prospective fuels as power producers, the effects they have upon engines, lubricants, etc., comparisons of cost and the like. The tests recorded in the paper were made in an endeavor to ascertain some of these unknown values.
1919-01-01
Technical Paper
190049
E H BELDEN
Efficiency, appearance and comfort will be the catchwords of the car of the future. Extreme simplicity of chassis will be needed to reduce weight and permit the use of substantial sheet-metal fenders, mud-guards and bodies. The center of gravity should be as low as possible consistent with good appearance. For comfort the width and angle of seats will be studied more carefully and the doors will be wider. A new type of spring suspension is coming to the fore, known as the three-point cantilever. Cars adopting it will have a certain wheelbase and a longer spring base. A car equipped with this new mechanism has been driven at 60 m.p.h. in safety and comfort without the use of shock absorbers or snubbers. It is the opinion of the author that this new spring suspension will revolutionize passenger-car construction.
1918-01-01
Technical Paper
180027
W G CLARK
1918-01-01
Technical Paper
180013
O W A OETTING
1917-01-01
Technical Paper
170005
F. HYMANS
The author points out the necessity of obtaining dynamic or running balance of rotating parts, especially in automobile-engine construction. He discusses the manifestations of the lack of static and running balance, such as vibration and high bearing pressures. Formulas are supplied for calculating bending moments and centrifugal forces in a crankshaft that is out of balance. Methods for obtaining static balance are described and the possible conditions existing after static balance is obtained are treated, with especial reference to the existence of one or more couples. Descriptions are given of two representative machines that are used to locate couples and correct for them. The principles of operation are made clear and advantages and disadvantages of each type are brought out fully.
1917-01-01
Technical Paper
170003
WALTER T. FISHLEIGH, W. E. LAY
The authors outline some of the problems that confront the automobile engineer today, showing how the demand for better performance and economy and the ever-increasing cost of volatile fuels has emphasized the necessity for thorough engineering work in the successful automobile manufacturing plant. Believing that the accurate analysis of the heat distribution in a modern automobile engine will be of great value, the authors describe a comprehensive test, made under their direction, of such an engine. This test includes measurements of the brake horsepower, friction horsepower, fuel consumption and heat losses to jackets, exhaust and cooling air. The engine tested was inclosed in a hood, similar to that used on the car in normal service and an air blast was directed through this hood at speeds approximating those at which the engine would drive a car with a given gear ratio.
1917-01-01
Technical Paper
170015
WALTER T. FISHLEIGH
1917-01-01
Technical Paper
170043
R. M. ANDERSON
This paper emphasizes the importance of using standardized testing equipment in order that mental calculations may be avoided in interpreting the reports of other engineers. The situation and environments of the engine-testing plant, cooperation among the men conducting tests, standardized methods of conducting tests, value of venturi meters and testing of accessories are among the subjects discussed in the first part of the paper. The subject of the testing of engine cooling systems is treated at some length, the importance of obtaining operating conditions being emphasized. The paper concludes with two sections covering spark-plug testing and tests for preignition.
1915-01-01
Technical Paper
150044
O. F. WAGENHORST
1915-01-01
Technical Paper
150020
MAX BACHEM
1915-01-01
Technical Paper
150010
GEORGE W. HOUK
1915-01-01
Technical Paper
150009
R. B. Mudge
1914-01-01
Technical Paper
140017
CHARLES W. BURROWS
1913-01-01
Technical Paper
130045
P. P. DEAN
1913-01-01
Technical Paper
130030
K. W. ZIMMERSCHIELD
1913-01-01
Technical Paper
130022
F. R. HUTTON, HERBERT CHASE
1913-01-01
Technical Paper
130028
E. F. ROBERTS
1913-01-01
Technical Paper
130013
HERBERT CHASE
1912-01-01
Technical Paper
120026
HERBERT CHASE
1912-01-01
Technical Paper
120027
HERBERT L. CONNELL
1912-01-01
Technical Paper
120003
BERT MORLEY
1911-01-01
Technical Paper
110002
RADCLYFFE FURNESS
1911-01-01
Technical Paper
110020
R. C. Lanphier
1910-01-01
Technical Paper
100006
L. R. EVANS, R. P. LAY
1910-01-01
Technical Paper
100008
A. F. SHORE
1909-01-01
Technical Paper
090008
R. C. Carpenter
1909-01-01
Technical Paper
090013
H. S. BALDWIN
1908-01-01
Technical Paper
080001
HENRY HESS
Viewing 15271 to 15300 of 15301