Location History:
- Schwieberdingen, DE (1991)
- Salzgitter, DE (1993)
Company Filing History:
Years Active: 1991-1993
Title: The Innovations of Hans Koehnle
Introduction
Hans Koehnle is a notable inventor based in Schwieberdingen, Germany. He has made significant contributions to the field of internal combustion engines, holding 2 patents that showcase his innovative spirit and technical expertise. His work primarily focuses on improving engine efficiency and protecting vital components from damage.
Latest Patents
One of Koehnle's latest patents is an exhaust-gas recirculation system for an internal combustion engine. This system includes diagnostic means based on temperature values measured in the exhaust-gas return duct. It provides a differential value between the actual temperature and a reference temperature, which indicates the potential beginning of diagnosis. The system can perform a flow-through test and determine if the recirculation system is functioning correctly by comparing the differential value to a threshold value. Additionally, a leak test of the exhaust-gas return valve can be conducted based on the temperature differential.
Another significant patent is the high voltage ignition system monitoring circuit. This invention protects catalytic converters from damage caused by a malfunctioning ignition system. The monitoring circuit checks the current in the ignition coil primary winding and transforms it into a test primary voltage. This voltage is then compared with the ignition system supply voltage from the battery. If the test voltage exceeds the supply voltage by a predetermined amount, an error indication is generated, allowing for timely servicing of the ignition system before damage occurs.
Career Highlights
Koehnle's career is marked by his association with Robert Bosch GmbH, a leading company in automotive technology. His work at Bosch has allowed him to develop and refine his innovative ideas, contributing to advancements in engine technology.
Collaborations
Throughout his career, Koehnle has collaborated with esteemed colleagues such as Walter Viess and Ernst Kaller. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.
Conclusion
Hans Koehnle's contributions to the field of internal combustion engines through his patents reflect his dedication to innovation and engineering excellence. His work continues to influence the automotive industry, ensuring that vehicles operate more efficiently and safely.