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:
Dec. 31, 1991
Filed:
Jan. 11, 1990
Applicant:
Inventors:
Peter G Hartman, Worcester, MA (US);
Steven L Plee, Northborough, MA (US);
Assignee:
Barrack Technology Limited, Perth, AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123489 ; 123494 ; 123478 ; 204424 ;
Abstract
A means and method for measuring and controlling smoke emissions from an internal combustion engine using a luminosity probe which measures the luminosity of soot in a combustion chamber of the engine. The luminosity signals generated by the probe are then used to measure smoke emissions based on an equation developed by the inventors which correlates the actual smoke being emitted from the exhaust with a predicted smoke emission value resulting from the luminosity signals. This smoke emission measurement can, in turn, be used in an engine control loop to control smoke emissions.