How to get better fuel economy

According to Kenworth, trucking fleet managers can maximize the fuel efficiency of their vehicles by following these tips:

1) Take advantage of aerodynamic vehicle designs. About half the energy used by a truck traveling 55 mph is used to move the air around the truck, while at 65 mph, about two-thirds of the energy is used to cut through the air.

2) Spec components that minimize mechanical rolling resistance. Larger gear sets usually have lower efficiencies, while larger capacity tires have more resistance. To increase fuel economy, use low-profile tires and aluminum wheels, and use all-position tires on the rear with the same tread as the steer-axle tires. Overinflation of tires is not effective as a fuel efficiency improvement method. Use wide base radial tires instead of less fuel efficient dual tire assemblies.

3) An engine with excessive power can sacrifice fuel efficiency, while automated transmissions can enhance fuel economy through computer-controlled shift logic.

4) Proper vehicle maintenance can yield significant fuel economy improvements. Remember to maintain proper tire inflation pressure, check tire wear, replace air and fuel filters at proper intervals, keep drive and steer axles properly aligned, monitor fuel quality, make sure the vehicle is not receiving dirty fuel that causes the fuel injectors to clog or disrupts the spray pattern, use quality synthetic oils and transmission fluids and avoid using a higherviscosity oil than is required for the operating conditions.

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