Abstract: An air bottoming powertrain, suitable for use in automobiles includes an internal combustion engine, a compressor which receives gaseous working fluid and compresses it to an elevated pressure, a cooler for operating the compressor isothermally, an expander for deriving work from the compressed gas and a heat exchanger located in the compressed gas line for indirect heat exchange between the compressed working fluid and exhaust gas from the internal combustion engine. The expander may have a cylindrical barrel with a plurality of cylinders arranged in the circle and open at one end face of the cylinder barrel, which end face is sealed closed by a valve plate. The cylinder barrel and valve plate allow relative rotation therebetween to drive an output shaft, driven by compressed gas from the compressor. An alternative expander is a Scotch Yoke piston motor which includes plural paired and axially aligned cylinders on opposing sides of an output shaft.
Type:
Grant
Filed:
September 17, 2001
Date of Patent:
July 9, 2002
Assignee:
The United States of America as represented by the
Administrator of the U.S. Environmental Agency
Abstract: A non-destructive unambiguous method of measuring the presence and level of acid sulfates, particularly ammonium bisulfate in air is disclosed including infrared energy absorbance measurements of particles deposited on the filter through which the air passes.
Type:
Grant
Filed:
May 2, 1995
Date of Patent:
February 18, 1997
Assignee:
United States of America as represented by the Administrator of the U.S. Environmental Agency