Company Filing History:
2 out of 25,946 
1 out of 34 Years Active: 1995-2019
Title: The Innovative Contributions of John Roberts in Diesel Technology
Introduction
John Roberts, an esteemed inventor based in Toledo, OH, has significantly contributed to the field of diesel technology with his innovative inventions. With a total of three patents to his name, Roberts focuses on enhancing the effectiveness of diesel engines, particularly in exhaust after-treatment systems.
Latest Patents
Roberts' latest patent, titled "System and method for diesel exhaust fluid injector cleaning," addresses the challenges associated with clogged diesel exhaust fluid (DEF) injectors. This invention outlines methods and systems for cleaning urea-clogged DEF injectors within selective catalytic reduction (SCR) engine exhaust after-treatment systems. In his method, when a diagnostic code signals a clogged injector, the engine operates in a cleaning mode. This mode includes running the engine at high idle speed, activating the DEF pump to deliver the required DEF at a specific flow rate, and measuring the duty cycle of the DEF pump during delivery. An increase in the duty cycle beyond a predetermined threshold indicates successful flow restoration of the DEF.
Another notable innovation by Roberts is the development of an exhaust system that features a conical shell equipped with an indentation traversing the exhaust passage. This design imparts mixing to the engine exhaust gas flowing through the inner passage. The indentation is formed through a stamping process, enhancing the efficiency of the exhaust system.
Career Highlights
Throughout his career, John Roberts has collaborated with leading organizations in the automotive industry, including Ford Global Technologies, LLC and Ap Parts Manufacturing Company. His work in these companies has allowed him to innovate and apply cutting-edge technologies within the field.
Collaborations
Roberts has worked alongside notable colleagues such as Colette Baxter and James Smarr Collins. Their combined expertise has undoubtedly contributed to the successful development of Roberts’ patents and innovations.
Conclusion
John Roberts’ inventive contributions, particularly in the realm of diesel engine after-treatment technologies, demonstrate his commitment to improving engine efficiency and performance. His insights and methodologies mark a significant advancement in the industry, showcasing how dedicated inventors can lead to substantial innovations in automotive technology.