Method for controlling a pressure supply device in a...

Details Method for controlling a pressure supply device in a... Method for controlling a pressure supply device in a...

2006-07-11

2006-07-11

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Control by independently operated punch card, tape, digital...

C060S403000, C060S452000

Reexamination Certificate

active

07073328

ABSTRACT:
The invention relates to a method for controlling a pressure supply device in a hydraulic circuit, especially in a hydraulic circuit in an automatic gearbox which comprises an hydraulic pump, a pressure control valve and a consumer. The hydraulic pump is controlled if the system pressure falls below a specific lower threshold value and is switched off if a specific higher threshold value of the system pressure is reached or exceeded. In the data on the system pressure is not available, the current system pressure is calculated.

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