HYDROSTATIC-MECHANICAL TRANSMISSION ARRANGEMENT

摘要

1. A hydrostatic mechanical transmission system, especially for garbage collection vehicles, with the following features : - an engine (1) coupled by a transmission (4) ; - an engine-dependent P.T.O. unit driving a variable displacement pump (18), hydraulically connected to a hydromotor (22) used for creep speed operation ; - the variable displacement pump (18) which is connected to the hydromotor (22) by a closed circuit ; - an accessory hydraulic power system (30) is used for implement operation, characterised in that the variable displacement pump (18) is connectable with this hydraulic power system via a changeover valve (28) mounted before the hydromotor (22) used for creep speed drive.