Dual pump drive system for compact construction vehicles

摘要

A compact construction vehicle includes a pump drive system including an engine having a flywheel. A first pump assembly is coupled directly to the flywheel such that a rotation rate of the first pump assembly is the same as a rotation rate of the flywheel. A power transfer system is coupled directly to the flywheel and provides a rotation rate which is different than the rotation rate of the flywheel. A second pump assembly is coupled to the power transfer system such that a rotation rate of the second pump assembly is the same as the rotation rate of the power transfer system. One of the first and second pump assemblies provides power for travel of the compact construction vehicle, while the other of the first and second pump assemblies provides power for a work group of the compact construction vehicle.