This inventor holds 1 USPTO granted patent. Top assignee: Eaton Corporation. Active years: 1994.
Company Filing History:
Years Active: 1994
Title: Innovations of Chia H Liu in Automatic Clutch Control
Introduction
Chia H Liu is an accomplished inventor based in Northville, MI (US). She has made significant contributions to the field of automatic clutch control, showcasing her expertise through her innovative patent.
Latest Patents
Chia H Liu holds a patent for "Touch point identification for automatic clutch controller." This invention provides an automatic and reliable determination of the touch point of a clutch controlled by an automatic clutch actuation controller. The invention determines the touch point while idling the engine, with the transmission in neutral and an inertial brake applied. The clutch actuation controller engages the clutch so that the measured transmission input speed matches a reference speed signal, preferably between 40% and 60% of the idle speed. This reliably provides the degree of clutch engagement at a small torque matching the braking torque. When the transmission input speed is within a predetermined amount of the reference speed signal, such as 4%, this invention determines the clutch touch point corresponding to the degree of clutch engagement. This degree of clutch engagement may be a clutch position signal or a clutch pressure signal produced by an existing sensor used in the automatic clutch control. If no measured clutch engagement signal is available, this degree of clutch engagement may be the clutch engagement signal used to control the degree of clutch engagement. The touch point is set as the difference between this degree of clutch engagement for the small torque and a clutch touch point offset. The determination may begin with the clutch fully engaged and gradually released according to control by the input and reference speeds. When the previous touch point is known, the clutch is preferably initially positioned just above the known touch point and then gradually released.
Career Highlights
Chia H Liu is currently employed at Eaton Corporation, where she continues to innovate and develop solutions in the automotive sector. Her work has been instrumental in enhancing the functionality and reliability of automatic clutch systems.
Collaborations
Chia has collaborated with her coworker, James Melvin Slicker, to further advance their projects and share insights in their field of expertise.
Conclusion
Chia H Liu's contributions to automatic clutch control through her innovative patent demonstrate her commitment to advancing automotive technology. Her work at Eaton Corporation and collaboration with colleagues highlight her role as a key player in the industry.