How great a reduction in the Figure 1.7 “road load” horsepower requirement would be necessary to...

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How great a reduction in the Figure 1.7 “road load” horsepower requirement would be necessary to enable a car with an “ideal” transmission to get 30 miles per gallon (mpg) at 70 mph? (Assume that the engine would have a minimum brake-specific fuel consumption of 0.45 lb/hp

h, as shown in Figure 1.9.)

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Given:
The reduction that is required in the vehicle road load horsepower that enables the car to get 30 miles per gallon at 70 mph  given that the minimum brake – specific fuel consumption of 0.

How great a reduction in the Figure 1.7 “road load” horsepower requirement would be necessary to enable a car with an “ideal” transmission to get 30 miles per gallon (mpg) at 70 mph? (Assume that the...

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