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1. (WO1985005333) HYDROSTATIC VEHICLE CONTROL

Pub. No.:    WO/1985/005333    International Application No.:    PCT/US1984/001242
Publication Date: Dec 5, 1985 International Filing Date: Aug 8, 1984
IPC: B60W 10/04
B60W 10/06
B60W 30/18
E02F 9/22
F02D 29/00
F04B 49/06
F16H 61/46
F16H 61/465
F16H 61/42
Applicants: CATERPILLAR TRACTOR CO.
Inventors: MITCHELL, Randall, M.
Title: HYDROSTATIC VEHICLE CONTROL
Abstract:
An apparatus (10) for regulating the speed of internal combustion engine (16) of a hydrostatic system. A fuel control means (34) acts to control the quantity of fuel delivered to the engine (16) responsive to the immediate hydraulic flow demanded by operation of the hydrostatic system. The speed of the engine (16) is set to one of a plurality of discrete levels in response to the required flow being within one of a corresponding plurality of preselected ranges.