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:
Jun. 23, 1992
Filed:
Jan. 25, 1991
Ramin Younessi, Hagerstown, MD (US);
Guy T Rini, Hagerstown, MD (US);
Mack Trucks, Inc., Allentown, PA (US);
Abstract
A system and method for closed loop control of a pressure-activated variable geometry turbocharger (VGT) for use in internal combustion engines, such as heavy duty diesel engines, provides sensors for detecting both intake manifold boost pressure as well as VGT actuator pressure. Sensors are also provided for detecting various engine operating parameters. Target VGT actuator pressures and target intake boost pressures are read from look-up tables according to the engine operating parameter values. Closed loop control of VGT geometry is effected based upon either VGT actuator pressure error or intake manifold boost pressure error as a function of engine operating mode, e.g., steady state or transient state operation. Turbine overspeed protection and adaptive compensation for transient state control are also performed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile