Company Filing History:
31 out of 31,002 
3 out of 832,843 Years Active: 2012-2019
Title: Innovations by Stephen Paul Levijoki in Engine Technology
Introduction
Stephen Paul Levijoki, an innovator based in Swartz Creek, Michigan, has made significant contributions to the field of engine technology with 34 patents to his name. His inventive work focuses on improving the efficiency and control of internal combustion engines, showcasing his dedication to advancing automotive technology.
Latest Patents
Levijoki's latest patents include the "Method of cam phase control based on cylinder wall temperature." This innovative method involves controlling intake and exhaust cam phases in an internal combustion engine by sensing engine speed and load, as well as cylinder wall temperature. It utilizes lookup tables to transition intake and exhaust phaser constraint values from cold operation to normal hot operation.
Another notable patent is for "Electronic throttle control using model predictive control." This patent outlines a vehicle throttle control system that uses a torque control system to provide desired torque for a throttle valve. It incorporates multiple model predictive control (MPC) controllers to determine optimal target throttle motor duty cycle values, allowing for precise control of throttle valve operation and improving overall vehicle performance.
Career Highlights
Levijoki has worked at GM Global Technology Operations LLC, where he contributed to the development and innovation of technologies applied within the automotive industry. His work has enhanced engine efficiency and functionality, making strides in the ever-evolving landscape of automotive engineering.
Collaborations
During his career, Levijoki has collaborated with notable professionals, including John W. Siekkinen and Christopher E. Whitney. These partnerships have fostered an environment of creativity and innovation, furthering advancements in engine technology and related fields.
Conclusion
Stephen Paul Levijoki stands out as a significant figure in the realm of automotive innovations, with a strong portfolio of patents that reflect his expertise and commitment to improving engine technology. His recent patents demonstrate a forward-thinking approach to solving complex challenges in the industry, and his collaborations with esteemed colleagues underline the importance of teamwork in driving technological advancements.