Abstract: A drive module for a hydraulic hybrid vehicle includes two variable displacement over-center bent-axis hydraulic pump/motors with respective yokes that reside and pivot within a common fluid-filled case. The cylinder barrel of each pump/motor is connected to high pressure through fluid-conducting yoke legs, and is connected to low pressure through the fluid-filled case, which is connected by a port to a low pressure source. As a drivetrain for a vehicle, one pump/motor acts primarily as a pump driven by an engine and the other pump/motor acts primarily as a motor to propel the vehicle. A removable support structure facilitates installation to a variety of vehicle chassis.
Type:
Grant
Filed:
March 8, 2012
Date of Patent:
November 25, 2014
Assignee:
The United States of America, as represented by the Administrator of the U.S. Environment Protection Agency
Abstract: A method and apparatus for generating a standardized surface contaminated by an aerosol deposited on its surface is described. Aerosols are propelled horizontally onto a vertical surface. The standardized contaminated surface is used to evaluate the effectiveness of cleaning and removing techniques.
Type:
Grant
Filed:
June 2, 2009
Date of Patent:
October 16, 2012
Assignee:
The United States of America as represented by the Administrator of the U.S. Environments Protection Agency
Inventors:
Sang Don Lee, Shawn P. Ryan, Emily G. Snyder