James M Johnson

Title: James M Johnson - Innovator in Engine Detonation Sensing Technology

Introduction

James M Johnson is a notable inventor based in Anderson, IN (US). He has made significant contributions to the field of engine technology, particularly with his innovative patent related to engine detonation sensing.

Latest Patents

James M Johnson holds a patent for a Magnetostrictive engine detonation sensor. This sensor is designed to detect engine vibrations at a predetermined frequency characteristic of detonation. It comprises a housing that can be attached to an internal combustion engine, a magnetostrictive element that is axially compressed within the housing, and a pickup coil on a spool around the magnetostrictive element. The spool engages the magnetostrictive element in a force fit characterized by a predetermined push-out force. The sensor housing includes a first resonant assembly with a frequency slightly higher than the predetermined frequency, while the spool and coil create a second resonant assembly with a frequency slightly lower than the predetermined frequency. The overall output characteristic of the sensor features a single resonant peak at the predetermined frequency.

Career Highlights

James M Johnson is associated with GM Global Technology Operations, Inc., where he has been able to apply his expertise in developing advanced technologies for engine performance. His work has contributed to enhancing the reliability and efficiency of internal combustion engines.

Collaborations

Throughout his career, James has collaborated with notable colleagues, including Charles E Buck and Paul A Joseph. These collaborations have likely fostered innovation and the exchange of ideas within the field.

Conclusion

James M Johnson's contributions to engine technology, particularly through his patent for a Magnetostrictive engine detonation sensor, highlight his role as an innovator in the automotive industry. His work continues to influence advancements in engine performance and reliability.