Because a diesel engine has a higher thermodynamic efficiency, it takes a longer time to reach its most efficient operating temperature. Once the diesel engine has reached this stage, it will require a higher engine load to maintain its operating temperature. This means that a vehicle fitted with a diesel engine is better suited to driving long distances or for hauling heavier loads. If the diesel engine is not driven at this optimum operation temperature, it suffers a loss in energy and environmental efficiency. In summary, a diesel powered car would be a poor choice for those make shorter trips in a car that’s only carrying one or two people at most.
January 24, 2018