Proportional solenoid valve for a camshaft adjusting device of motor vehicles
AssigneeHydraulik-Ring GmbH
InventorMarius Cornea
Life of this patent
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Abstract
A proportional solenoid valve or a camshaft adjusting device of motor vehicles has a valve housing and a piston movably arranged in the valve housing and provided with at least one pressure medium passage. A solenoid part is connected to the valve housing and acts on the piston. The valve housing has at least one working connector, a tank connector, and a pressure connector configured to supply a pressure medium into the piston. A leakage passage is provided that connects the pressure connector at all times to the at least one working connector.
Claims18
A proportional solenoid valve for a camshaft adjusting device of motor vehicles, the proportional solenoid valve comprising:
- a valve housing;
- a piston movably arranged in the valve housing and provided with at least one pressure medium passage;
- a solenoid part connected to the valve housing and acting on the piston;
- the valve housing having at least one working connector, a tank connector, and a pressure connector configured to supply a pressure medium into the piston;
- one or more leakage passages connecting the pressure connector at all times to the at least one working connector;
- wherein the piston is a hollow piston having a wall and wherein the at least one pressure medium passage is at least one opening penetrating the wall;
- wherein several of the openings penetrating the wall are provided and wherein a first and a second one of the working connectors are provided, wherein the first and second working connectors each have at least one of the openings penetrating the wall correlated therewith.
A proportional solenoid valve for a camshaft adjusting device of motor vehicles, the proportional solenoid valve comprising:
- a valve housing;
- a piston movably arranged in the valve housing and provided with at least one pressure medium passage;
- a solenoid part connected to the valve housing and acting on the piston;
- the valve housing having at least one working connector, a tank connector, and a pressure connector configured to supply a pressure medium into the piston;
- one or more leakage passages connecting the pressure connector at all times to the at least one working connector;
- wherein the one or more leakage passages are comprised of openings provided in the valve housing;
- wherein the valve housing has a land between the at least one working connector and the pressure connector and wherein the one or more leakage passages are bores in the land.
A proportional solenoid valve for a camshaft adjusting device of motor vehicles, the proportional solenoid valve comprising:
- a valve housing;
- a piston movably arranged in the valve housing and provided with at least one pressure medium passage;
- a solenoid part connected to the valve housing and acting on the piston;
- the valve housing having two working connectors, a tank connector, and a pressure connector configured to supply a pressure medium into the piston;
- one or more leakage passages connecting the pressure connector at all times to the two working connectors.
A camshaft adjusting device for motor vehicles, comprising:
- an adjuster having an adjusting element;
- a proportional solenoid valve acting on the adjusting element for adjusting the adjusting element;
- the proportional solenoid valve comprising a valve housing provided with at least one working connector, a tank connector, and a pressure connector;
- the proportional solenoid valve comprising a piston movably arranged in the valve housing;
- the pressure connector adapted to supply a pressure medium into the piston;
- the piston having at least one passage for the pressure medium;
- one or more leakage passages connecting the pressure connector at all times to the at least one working connector for hydraulically clamping the adjusting element.
A camshaft adjusting device for motor vehicles, comprising:
- an adjuster having an adjusting element;
- a proportional solenoid valve acting on the adjusting element for adjusting the adjusting element;
- the proportional solenoid valve comprising a valve housing provided with two working connectors, a tank connector, and a pressure connector;
- the proportional solenoid valve comprising a piston movably arranged in the valve housing;
- the pressure connector adapted to supply a pressure medium into the piston;
- the piston having at least one passage for the pressure medium;
- one or more leakage passages connecting the pressure connector at all times to the two working connectors for hydraulically damping the adjusting element.
Dependencies are inferred from the claim text.