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Fuel efficiency of an agricultural tractor is a systems consideration. An efficient powertrain can waste fuel if it is not used properly. Ford Tractor Operations developed a Fuelminder to inform the operator of the fuel use and efficiency of his tractor and as a guide to improve its operation. Operators who evaluated this display module thought they could save fuel by using the information obtained.

The paper predicts that the hydraulic power lift (HPL) will continue to serve as the basic mechanism through which control of mounted and semimounted agricultural tractor equipment is accomplished. The evolution of the HPL is reviewed, hitching theory and operating characteristics are summarized and some factors that will be required in future HPL systems are discussed. Finally, an analysis is provided of advanced systems that can potentially furnish types of control that will make feasible fuller power utilization in larger tractors.