This inventor holds 2 USPTO granted patents and 2 published patent applications. Top assignee: Dr. Ing. H.c. F. Porsche Aktiengesellschaft. Active years: 2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2025
Title: Andreas Freuer: Patents in Vehicle Technology
Introduction
Andreas Freuer is an inventor based in Ludwigsburg, Germany. His work includes inventions for vehicle systems, including gear-pump control and active chassis damping. He is associated with Dr. Ing. h.c. F. Porsche Aktiengesellschaft and has 2 patents listed in the information provided.
Latest Patents
**Method for Controlling a Gear Pump.** This invention describes a control method designed to compensate for tooth engagement-induced volume-flow pulsations and reduce noise emissions. The control device acquires the gear angle and the pump’s actual speed, then uses a relationship between modulation angle and pilot-control torque amplitude to determine compensation. It modulates the pilot-control torque based on the acquired gear angle, a correction angle, the modulation angle, the pump’s number of teeth, and the specified amplitude. The pump is driven by a torque overlaid with the modulated pilot-control torque. The modulation angle is calculated using a PT element, with actual speed as its input.
**Damping Arrangement for an Axle of a Motor Vehicle.** This patent describes an active-chassis damping arrangement for a vehicle axle, with a damping system associated with each wheel. Each system includes a damper with a double-acting hydraulic cylinder and piston, a reversible hydraulic pump, an electric motor, and a hydraulic unit with a reservoir and valves. Depending on the pump’s conveying direction, the system can move the piston in either of two actuation directions. A common control device drives the electric motors of both damping systems. Position sensors detect the motors’ rotor positions, while pressure sensors measure pressure at the hydraulic pumps.
Career Highlights
The two listed patents address distinct engineering challenges in vehicle technology: reducing noise from gear-pump pulsations and enabling controlled hydraulic damping in an active chassis. Together, they reflect Freuer’s contributions to mechanical and control systems for automotive applications.
Collaborations
The provided information identifies Thomas Witte as a coworker. It does not specify the nature of their collaboration or whether they worked together on either patent.
Conclusion
Andreas Freuer’s listed inventions focus on improving the operation of vehicle systems through gear-pump control and active chassis damping.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile