Ellen Greifenstein

Title: Ellen Greifenstein: Pioneering Innovations in Vehicle Technology

Introduction

Ellen Greifenstein, an innovative inventor based in Darmstadt, Germany, has made significant contributions to the realm of vehicle technology. With two patents to her name, her cutting-edge inventions focus on improving the efficiency and functionality of fuel cell engines and vehicle cooling systems. Greifenstein's work reflects a commitment to advancing sustainable technology within the automotive industry.

Latest Patents

Ellen Greifenstein's latest patents include a "Method and apparatus for starting a fuel cell engine in a vehicle equipped with an ultracapacitor" and "External control of a vehicle coolant pump with remote heating option". The first patent describes a hybrid fuel cell system integrating a fuel cell stack and an ultracapacitor. This innovative setup ensures that high voltage from the ultracapacitor does not interfere with the fuel cell operation, while effectively powering various system loads during start-up.

The second patent provides a system that operates a vehicle's cooling fluid pump and heater even when the vehicle is not in use, preventing the temperature of the cooling fluid from dropping too low in cold environments. This system includes an AC connector, AC/DC converter, and a temperature switch, enabling efficient temperature regulation.

Career Highlights

Ellen Greifenstein is a key member of Gm Global Technology Operations LLC, where her expertise in vehicle technology continues to flourish. Her career is marked by a dedication to developing innovative solutions that enhance vehicle performance and sustainability.

Collaborations

During her impactful career, Ellen has collaborated with prominent colleagues, including Matthew K. Hortop and David John Keyes. These partnerships have fostered a creative environment that drives innovation in the field of automotive technology.

Conclusion

Ellen Greifenstein remains a vital contributor to the automotive industry through her pioneering inventions and collaborative spirit. Her patents highlight her commitment to advancing eco-friendly vehicle technology, ensuring sustainable solutions for the transportation of the future. Ellen's work is a testament to the importance of innovation in addressing the challenges of modern automotive engineering.