Question

In order to reduce drag and thus improve fuel mileage, the design of side rearview mirrors has changed from a simple circular design (Cp-1.1) to a streamlined oval shape (C 0.4). Determine the yearly amount of fuel and cost savings as a result of replacing a 0.13 meter flat mirror with the oval shaped design. Assume that the car is driven 24,000 km per year at an average speed of 95 km/hr. The price of gasoline is S0.80/liter, the specific gravity of gasoline is 0.8, and the heating value of gasoline is 44,000 kJ/kg. The engine efficiency averages 30%.

Answer 1

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