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Relationship between Gross Weights and Horsepowers of Commercial Vehicles Operating on Public Highways
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English
Abstract
This study investigates the relationship between the gross weight and net engine horsepower of commercial vehicles. The data were used to update current information on weight-power ratios of trucks and investigate the trend in the ratios since 1949.
There is a definite increase in the weight-power ratio as the number of axles increases, regardless of vehicle type. There is also an overall trend to lower weight-power ratios as evidenced by a 12% reduction in the ratio from 1949 to 1955 and a further reduction of 28% from 1955 to 1963. A performance requirement of 400 lb/hp is liberal and would affect only a small percentage of the total trucks.