Energy conservation apparatus for an electric vehicle

Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy

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Details

60418, 60484, 60DIG2, F15B 102

Patent

active

039642607

ABSTRACT:
A hydraulic accumulator is provided in the hydraulic system of an electric vehicle, such as a lift truck, for conserving its battery power by minimizing the frequency of energy draining pump start-ups during operation. Pressurized fluid stored in such accumulator is utilized for powering any of the various hydraulically actuated work elements employed on the vehicle when the pump is not being run. The system further provides for automatically starting and stopping the pump to keep the pressure in the accumulator within a predetermined operating range and for starting the pump when required to achieve the desired actuation of a particular work element.

REFERENCES:
patent: 2330739 (1943-09-01), Piron
patent: 2595248 (1952-05-01), Greer et al.
patent: 3014344 (1961-12-01), Arnot
patent: 3083533 (1963-04-01), Schenkelberger

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