Electronic control device and control circuit for an air suspension system of a commercial vehicle

US11207935B2 · kind B2 · utility

Assignee

• Haldex Brake Products Aktiebolag · US

Inventors

• Dudley Harrison · Dudley, GB
• Carl Mellings · Lindley, GB
• Georg Sulzyc · Edingen-Neckarhausen, DE
• Christian Schering · Vreden, DE
• Siegfried Heer · Kirchdorf an der Krems, AT
• Stefan Becke · Neustadt, DE
• Joachim Noecker · Eberbach, DE
• Tobias Tschoeke · Heidelberg, DE
• Arne Busch · Frankenthal (Pfalz), DE

Key dates

• Filing date: Aug 20, 2018
• Grant date: Dec 28, 2021
• Expiry date: Jan 4, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2800/922
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An air suspension system of a commercial vehicle comprises an electronic control device with a level control valve device. A valve element is coupled to a drive element mechanically coupled to a vehicle wheel or axle. In a first relative position of the valve element and a counter valve element, a port for an air suspension bellow is blocked. In a second relative position, the port for the air suspension bellow is connected to a port for an aeration device. In a third relative position, the port for the air suspension bellow is connected to a port for a deaeration device. Control logic generates a control signal for an actuator which, when a level change is set by an operator, correspondingly changes the relative position of the valve element and the counter valve element or the relative position of the counter valve element and a valve housing.