초록 ▼

A device for reducing pressure in a compressor when it is in the idling and shut-down mode, in the induction manifold of which there is an induction control valve that controls the passage through the induction manifold, is provided with a bypass line that incorporates a closeable relief valve. The

A device for reducing pressure in a compressor when it is in the idling and shut-down mode, in the induction manifold of which there is an induction control valve that controls the passage through the induction manifold, is provided with a bypass line that incorporates a closeable relief valve. The device for reducing pressure incorporates a spring-loaded pressure keeper valve that can be adjusted to the desired pressure, and an additional second relief valve that is arranged in parallel to the first relief valve. This second relief valve is acted upon by the pressure immediately upstream of the compressor in the induction manifold, and opens an additional relief path as soon as this pressure exceeds a pro-determined level when the compressor is shut down. The two relief valves and the pressure keeper valve can be incorporated into a common housing.

대표청구항 ▼

A device for reducing the pressure of a compressor in the idling and shut-down mode in a pressure system of the type comprising an induction control valve for controlling the passage of a medium through an intake manifold, a bypass channel for bypassing the induction control valve and whose output l

A device for reducing the pressure of a compressor in the idling and shut-down mode in a pressure system of the type comprising an induction control valve for controlling the passage of a medium through an intake manifold, a bypass channel for bypassing the induction control valve and whose output leads through a pressure accumulator to a user, and an adjusting means for the induction control valve that is activated by the pressure in the pressure accumulator, said adjusting means including a return line that can be shut off by a first pressure relief valve leading back to the induction valve, said device being incorporated in said return line and comprising a first spring-loaded, pressure keeper valve that can be adjusted to the desired pressure, and an additional second pressure relief valve that is arranged in parallel with said first pressure relief valve, said second pressure relief valve being acted on by pressure immediately upstream of the compressor, and said second pressure relief valve opening an additional relief path as soon as said pressure exceeds a predetermined level when the compressor is in the shut-down mode.