Company Filing History:
Years Active: 2012-2016
Title: John Zeilstra: Innovator in Engine Control Systems
Introduction
John Zeilstra is a notable inventor based in Chicago, IL, with a focus on advancements in engine control systems. He holds a total of 3 patents that contribute to the efficiency and functionality of engine operations.
Latest Patents
One of his latest patents is titled "Control system and method for preventing hydrocarbon slip during particulate matter filter regeneration." This invention includes an engine control system that features an injection determination module and an injection regulation module. The injection determination module calculates the desired rate of hydrocarbon injection into exhaust gas for the regeneration of a particulate matter filter. The injection regulation module adjusts the rate of hydrocarbon injection from an initial rate to the desired rate during a specific period before the regeneration process, based on temperature differences.
Another significant patent is "Method and system for controlling an engine during diesel particulate filter regeneration at idle conditions." This method involves a diesel particulate filter regeneration request module that generates a signal for DPF regeneration. It also includes an idle condition module that signals when the engine is idling. The DPF regeneration control module manages the engine's oxygen levels during this process to optimize performance.
Career Highlights
John Zeilstra is currently employed at GM Global Technology Operations LLC, where he applies his expertise in engine control systems. His work has significantly impacted the automotive industry, particularly in enhancing engine efficiency and reducing emissions.
Collaborations
He collaborates with talented individuals such as Julian C Tan and Christoph Thoele, contributing to innovative projects and advancements in technology.
Conclusion
John Zeilstra's contributions to engine control systems through his patents demonstrate his commitment to innovation in the automotive field. His work continues to influence the development of more efficient and environmentally friendly engine technologies.