Hydrostatic vehicle control

Details Hydrostatic vehicle control Hydrostatic vehicle control

1984-05-14

1985-06-18

Look, Edward K.

Pumps

Condition responsive control of pump drive motor

By controlling internal combustion drive engine

60431, 60445, 60449, 417 53, 417218, 417222, F04B 4900, F04B 126

Patent

active

045238928

ABSTRACT:
An apparatus for controlling both pump displacement of a variable displacement hydraulic pump and the quantity of fuel delivered to an internal combustion engine for the purpose of delivering a requested hydraulic flow at a highly efficient operating point. The apparatus includes an underspeed control means for reducing pump displacement in response to the operating speed of the engine lugging below a desired operating speed. Additionally, a fuel control means operates to reduce the quantity of fuel delivered to the engine in response to the operating speed of the engine rising above the desired operating speed.

REFERENCES:
patent: 3788775 (1974-01-01), Leutner et al.
patent: 4074955 (1978-02-01), Nonnemacher et al.
patent: 4103489 (1978-08-01), Fletcher et al.
patent: 4248194 (1981-02-01), Drutchas et al.
patent: 4395199 (1983-07-01), Izumi et al.
patent: 4459806 (1984-07-01), Falk

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