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. 06, 2023
Filed:
Dec. 09, 2020
Caterpillar Inc., Peoria, IL (US);
Rajesh Narayanan Nair, Rossville, IL (US);
Samuel Were, Peoria, IL (US);
James Harris Mutti, Germantown Hills, IL (US);
Behnaz Ensan, Peoria, IL (US);
James Vernon Dornberger, II, Canton, IL (US);
Rodney L. Menold, Hanna City, IL (US);
Timothy David Schwartz, East Peoria, IL (US);
Kevin Walsh, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An engine braking system includes engine braking actuators for adjusting exhaust valve timings to engine braking timings in a cylinder-number braking mode. The system further includes an engine braking controller coupled to a control switch that produces a request indicating a requested cylinder-number braking mode. The engine braking controller is structured to transition exhaust valves to the engine braking timings, determine a control term to adjust intake air pressure for varying a braking power of the engine, and to adjust geometry of an exhaust turbine based on the control term. An adjusted speed of a compressor rotated by the exhaust turbine provides a change to intake air pressure that adjusts the braking power of the engine. Different levels of braking power are provided within different cylinder-number braking modes.