Company Filing History:
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Years Active: 2007-2015
Title: Jack Marshall: Innovator in Fuel System Technologies
Introduction
Jack Marshall is a notable inventor based in Detroit, MI (US). He has made significant contributions to the field of fuel system technologies, holding a total of 2 patents. His innovative work focuses on enhancing the reliability and efficiency of fuel systems in hybrid electric vehicles.
Latest Patents
One of Jack's latest patents is titled "Fuel tank pressure sensor rationality test for a PHEV." This invention provides a method for verifying the reliable operation of a fuel tank pressure transducer positioned within a fuel tank of a plug-in hybrid electric vehicle (PHEV). The method detects the initiation of a refueling cycle, which leads to the opening of a system vent valve positioned between a carbon canister and a system vent, as well as the opening of a fuel tank isolation valve. A controller monitors fuel system pressure within the fuel tank and at the vent valve, determining rates of change of the fuel system pressure. Reliable operation of the fuel tank pressure transducer is indicated when these rates of change are uniform within a predetermined range.
Another significant patent is the "Method and system for seamless transition between multiple feedback ranges." This invention addresses the processing of multiple sensor output signals of different ranges and sensitivities, ensuring a seamless transition when switching between them. The method involves determining whether a selected sensor output range has a sensitivity higher than a predetermined sensitivity. If so, the higher sensitivity sensor output is converted to a value corresponding to the predetermined sensitivity range. An error value is then calculated, and the sensor output is modified based on this error value to prevent glitches during the switchover.
Career Highlights
Jack has worked with prominent companies in the automotive industry, including Ford Global Technologies, LLC and Visteon Global Technologies, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in fuel system technologies.
Collaborations
Throughout his career, Jack has collaborated with notable professionals such as Mark W. Peters and Robert Roy Jentz. These collaborations have contributed to the advancement of his inventions and the successful implementation of his ideas.
Conclusion
Jack Marshall is a distinguished inventor whose work in fuel system technologies has led to significant advancements in the automotive industry. His patents reflect his commitment to innovation and reliability in hybrid electric vehicles.