The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 1995
Filed:
Mar. 28, 1994
Mostafa M Kamel, Columbus, IN (US);
Greg A Moore, Columbus, IN (US);
Cummins Engine Company, Inc., Columbus, IN (US);
Abstract
A computer controlled, spark-ignited, turbocharged internal combustion engine has stored in memory, turbocharger compressor outlet absolute pressure for desired engine performance throughout the engine speed range at sea level (760 mm. H.sub.g) ambient pressure engine operating conditions. A sensor responsive to absolute pressure at the turbocharger compressor outlet continuously monitors the absolute pressure and compares it with the stored pressure for the engine speed at which the engine is operating at any particular time. When there is a difference, the computer responds to hold or change the waste gate position such as to hold or change the boost to re-establish the same compressor outlet absolute pressure as was stored for that engine speed under sea level ambient conditions.