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:
May. 15, 2001
Filed:
Nov. 25, 1998
Applicant:
Inventors:
John E. Cook, Chatham, CA;
Murray F. Busato, Clinton Twp., MI (US);
Assignee:
Siemens Canada, Ltd., Mississauga, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 2/507 ; G01D 1/800 ;
U.S. Cl.
CPC ...
F02M 2/507 ; G01D 1/800 ;
Abstract
An automotive emission control module has an emission control valve containing a main flow passage having a valve member that controls fluid flow through the flow passage. An internal pressure sensing passage communicates pressure at one side of an orifice in the main flow passage to a pressure sensor. The pressure sensor and a fluid pressure regulator valve are integrated with the body of a fluid-pressure-operated actuator that operates the valve member. The module is calibrated and tested in a test stand, and can be re-calibrated after installation in an automotive vehicle.