Turbocharger compressor anti-surge engine control strategy and method

US9683498B2 · kind B2 · utility

Assignee

• Caterpillar Inc. · US

Inventors

• Urvish Joshi · Dunlap, US
• Travis E. Barnes · Peoria, US
• Eric W. Cler · Oswego, US
• Anand KrishnamurthyGopalan · Albion, US
• Eric A. Hutchison · Peoria, US
• Kirti C. Tamhane · Dunlap, US
• Andrew N. Schifferer · Batavia, US
• Tyler Bowman · Albuquerque, US
• Kevin J. Sergott · Dunlap, US
• Matthew Mowers · Peoria, US
• Daniel R. Puckett · Peoria, US

Key dates

• Filing date: May 19, 2015
• Grant date: Jun 20, 2017
• Expiry date: Dec 18, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for operating an internal combustion engine includes monitoring engine parameters using an electronic controller, determining a surge speed limit for the engine based on a compressor map, determining an offset engine speed based on a margin between the surge speed limit and an engine speed, determining a minimum engine speed based on the margin, applying the offset engine speed to an engine speed signal to provide an adjusted engine speed, and applying the adjusted engine speed to a desired engine speed when a speed of the engine approaches the surge speed limit.