Cold start valve and hydraulic arrangement having a cold start valve of this type

摘要

A cold start valve for a hydraulic circuit has a valve slide with two counteracting control faces. It is possible to load a first control face with a control pressure and to load a second control face with a feed pressure. In addition, the first control face is loaded with the spring force of a valve spring. A damping space is configured to damp a stroke movement of the valve slide. The damping space is delimited by a damping face formed on the valve slide and oriented in accordance with the first control face. The damping face is configured to be loaded via the damping space with a damping pressure to damp the stroke movement. The damping space is connected in a throttled manner to a pressure space. The second control face of the valve slide is configured to be loaded with the feed pressure via the pressure space.

主权项

1. A cold start valve for a hydraulic circuit, the valve comprising:
a valve slide configured to open and close in a controlled manner a pressure medium connection between a pressure connection and an outlet connection; a control space delimited by a first control face of the valve slide, the first control face configured to be loaded with pressure medium in a closing direction; an inlet space connected fluidically to the pressure connection and delimited by a second control face of the valve slide, the second control face configured to be loaded with pressure medium in an opening direction; and a damping space connected fluidically via an intermediate space, which acts in a throttled manner, to the inlet space and delimited by a damping face of the valve slide, the damping face configured to be loaded with pressure medium, wherein the valve slide is configured to be loaded in the closing direction by a spring force of a valve spring.