C
Charles L. Gray
Researcher at Government of the United States of America
Publications - 8
Citations - 235
Charles L. Gray is an academic researcher from Government of the United States of America. The author has contributed to research in topics: Relief valve & Hydraulic pump. The author has an hindex of 6, co-authored 8 publications receiving 235 citations. Previous affiliations of Charles L. Gray include United States Environmental Protection Agency.
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Patent
Hydraulic hybrid vehicle
TL;DR: In this paper, a hydraulic drive circuit includes a hydraulic pump/motor having a shaft fixed to for rotation with the crankshaft of an internal combustion engine and a pair of pump/motors coaxially arranged to share a common shaft on which is mounted a gear of a gear set for transmitting output to the vehicle drive wheels.
Patent
Efficient bypass valve for multi-stage turbocharging system
TL;DR: In this article, a bypass channel is configured such that exhaust gas entering the bypass channel passes only through the second turbine, and a valve positioned in the bypass can be controlled so as to maintain the valve in a closed position while exhaust gas pressure above the first turbine pressure is below a first threshold.
Patent
Vehicle drive-train including a clutchless transmission, and method of operation
Charles L. Gray,Daniel W. Barba +1 more
TL;DR: In this paper, the output shaft of the drive-motor and the input shaft of a transmission are coupled together such that, during normal operation of a vehicle drive-train, rotation of the output-shaft of a drive-motors output shaft results in a proportionate and uninterrupted rotation of its input shaft.
Patent
On-demand power brake system and method
Charles L. Gray,Mark Stuhldreher +1 more
TL;DR: In this article, a hydraulic brake system includes a piston that separates a first pressure chamber from a second pressure chamber of a cylinder bore, and a valve within a piston bore is movable between three positions.
Patent
Quiet fluid supply valve
TL;DR: In this article, a pilot-controlled supply valve is coupled between a hydraulic machine and a high-pressure fluid source, and includes a control port for an actuation signal at the control port.