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Technical Paper

Energy and the Automobile - General Factors Affecting Vehicle Fuel Consumption

1973-02-01
730518
Since 1968, vehicle weight increases and emissions controls have reduced fuel economy substantially. Additional losses in economy and acceleration will be experienced through 1976. Recommendations are made to lessen the impact of the predicted losses. Factors influencing fuel economy and acceleration are examined for an intermediate car. Changes in engine efficiency and displacement, compression ratio, torque converter, transmission, axle ratio, aerodynamic drag, tires, accessories, vehicle weight, and emissions controls are examined. When practical, the effects of 10% changes are analyzed. Comparisons are also made with a subcompact and a luxury vehicle.
Technical Paper

THE AUTOMOTIVE GAS TURBINE - Today and Tomorrow

1957-01-01
570057
THIS paper discusses the progress of research on the automotive gas turbine and predicts its future potentialities. Comparison of gas turbines and presently used engines shows the possibilities of the gas-turbine applications. Design, construction, and testing of gas turbines are discussed, especially in the light of economy and performance.
Technical Paper

Computer-Based Selection of Balanced-Life Automotive Gears

1960-01-01
600036
THIS PAPER describes balanced-life concept of gear design — in which the gear and pinion are designed to fail simultaneously. An example is presented to show how this concept allows a combination of minimum size and maximum capacity in gas turbine application. Various reasons for failure and factors in long gear life are discussed. The author analyzes the calculations needed and their programming for a digital computer. Calculating gear designs for production is a time consuming, demanding task to do manually. The use of the computer has changed this — and brought about better gear design by making it possible to study more detailed analyses to evolve optimum solutions. This paper was the Sixth L. Ray Buckendale Lecture, presented at the 1960 SAE Annual Meeting.
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