Urban omnibus with hydrostatic propulsion

摘要

The omnibus has at least one primary unit, driven by the vehicle engine, and in each case, for driving a wheel or wheel set of one side of each drive axle, a secondary unit which is connected hydraulically to the said primary unit. It is an object of the invention to develop such an urban omnibus in such a way that, without impairing the driving performance, the central aisle can be designed to be level throughout and can be lowered further than the extent possible at present. This is achieved by each drive axle being designed as a portal axle and each secondary unit comprising at least two mechanically intercoupled and hydraulically parallel-connected hydraulic motors, which are arranged on the portal axle in such a way that they do not substantially protrude beyond the level of the lower-lying, dropped part of the said axle. IMAGE