SPEED REGULATORS FOR INTERNAL COMBUSTION ENGINES PARTICULARLY DIESEL ENGINES IN EARTH WORKERS

摘要

1495822 Engine speed control for an earthworking vehicle AKERMANS VERKSTAD AB 20 Jan 1975 [23 Jan 1974] 2322/75 Heading F1B The fuel injector control lever 2 of an I.C. (e.g. diesel) engine in an earth-working vehicle of the type wherein earth-working implements are hydraulically powered by means of a pump 21 driven by the engine, is connected to a manually operable lever 4 by a piston and cylinder assembly 1 which is extended or retracted by hydraulic fluid flowing in the circuit operating the implements. When in operation, fluid is supplied to earth- working implements by operating control valves 7, 8 to connect lines 10 with the pump 21. At the same time fluid passes through non-return valves 11 into line 12 where it extends the piston and cylinder assembly 1 to move the lever 2 anticlockwise increasing fuel supply to the engine and engine speed. On closure of the control valves 7, 8 or moving them to a neutral position, pressurized fluid escapes to a tank 8 through an adjustable throttle 16, the piston and cylinder assembly retracting (under the action of a spring) pulling lever 2 clockwise to reduce engine speed. In a further embodiment means are provided for overriding the automatic control.