Location History:
- Livonia, MI (US) (1989 - 1994)
- Swartz Creek, MI (US) (2016)
Company Filing History:
Years Active: 1989-2016
Title: Innovations by John C. Haraf
Introduction
John C. Haraf is a notable inventor based in Livonia, MI (US), recognized for his contributions to vehicle technology. He holds a total of 4 patents, showcasing his expertise in developing innovative solutions for automotive systems.
Latest Patents
One of his latest patents is focused on normalizing deceleration of a vehicle equipped with a regenerative braking system. This method involves determining the regenerative torque capacity and calculating a desired regenerative torque amount for the braking system. It also includes detecting when the desired regenerative torque exceeds the regenerative torque capacity and controlling the actuation of the friction braking system accordingly. Another operating method he developed assesses the coastdown torque capability of the vehicle, calculates a desired coastdown torque amount, and manages the friction braking system based on these calculations.
Additionally, Haraf has patented a canister purge control method. This method allows for the purging of fuel vapor from a canister to the vehicle engine, controlled by a solenoid valve. The valve's duty cycle is optimized to enhance the purge rate, utilizing closed loop fuel correction and block learn fuel correction factors to update a learned purge duty cycle stored in a keep-alive memory.
Career Highlights
John C. Haraf is currently employed at GM Global Technology Operations LLC, where he continues to innovate in the field of automotive technology. His work has significantly contributed to advancements in vehicle efficiency and performance.
Collaborations
Throughout his career, Haraf has collaborated with notable colleagues, including David C. Poirier and George T. Stephens, further enhancing the impact of his inventions.
Conclusion
John C. Haraf's innovative work in vehicle technology, particularly in regenerative braking systems and fuel vapor management, highlights his significant contributions to the automotive industry. His patents reflect a commitment to improving vehicle performance and efficiency.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.