Gas or dual fuel engine

US9605602B2 · kind B2 · utility

Assignee

• Caterpillar Motoren GmbH & Co. KG · DE

Inventors

• Eike Joachim Sixel · Kiel, DE
• Adam Stubbs · Woodhall Spa, GB
• Aradhita Chakrabarty · Peterborough, GB
• Daniel Wester · Felde, DE
• Rodney Stazicker · Pidley, GB
• Michael A. Snopko · Nashville, US
• Arvind Sivasubramanian · Peoria, US

Key dates

• Filing date: Mar 6, 2015
• Grant date: Mar 28, 2017
• Expiry date: May 8, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method of operating a gas or dual fuel engine having a plurality of cylinders, includes monitoring a characteristic of each of the plurality of cylinders during operation of the gas or dual fuel engine. The method also includes detecting a pre-ignition condition associated with one or more cylinders of the plurality of cylinders based on the monitored characteristic. The method further includes reducing fuel supply to the one or more cylinders having the pre-ignition condition. The fuel supply to remaining cylinders of the plurality of cylinders is increased, to maintain a constant power output of the gas or dual fuel engine. The method further includes adjusting an amount of air supplied to each of the plurality of cylinders based on the increased amount of fuel supplied to the remaining cylinders, to maintain an air-to-fuel ratio within a desired range.