Harald Fessler

Title: Innovations of Harald Fessler: Advancing Valve Actuation and Emission Systems

Introduction

Harald Fessler is a prominent inventor based in Arbon, Switzerland, known for his contributions to engine technologies. With a portfolio of five patents, Fessler has made significant strides in variable valve actuation systems and urea crystal prevention methods in exhaust treatments.

Latest Patents

Fessler's latest patent focuses on Variable Valve Actuation, which includes a cam mechanism and a valve designed to transition between closed and open positions. This system features a main rocker arm that swings over a fulcrum, enabling precise valve displacement and enhancing system stiffness while preventing valve brake due to the guide profile. Notably, this innovation also supports accumulator-less designs, showcasing its efficiency and effectiveness.

Another significant invention by Fessler includes a System for Preventing Urea Crystal Formation within an Exhaust Gas After Treatment System (ATS). This patent describes a dosing module equipped with a spray mechanism for a urea-based reducing agent, complemented by an electric heating element positioned to operate within the spray cone. This innovation aims to optimize exhaust treatment by preventing the crystallization of urea, thereby improving overall engine performance and emissions control.

Career Highlights

Throughout his career, Harald Fessler has worked with respected companies such as FPT Motorenforschung AG and Iveco Motorenforschung AG. His affiliations with these firms highlight his engagement in cutting-edge research and development in the automotive and engine industries.

Collaborations

Fessler has collaborated with notable individuals in the field, including Daniel Assalve and John Campbell. These partnerships have likely contributed to the innovative advancements reflected in his patents, further enriching his experience and expertise within engine technology.

Conclusion

Harald Fessler's innovative work, particularly in variable valve actuation and emission control systems, showcases his dedication to improving engine performance and compliance with environmental standards. His impressive patent portfolio is a testament to his creativity and technical skill, positioning him as a significant contributor to the field of automotive engineering.