Process of controlling operation in a multi-cylinder engine

US10215125B2 · kind B2 · utility

Assignee

• Caterpillar Motoren GmbH & Co. KG · DE

Inventors

• Eike Joachim Sixel · Kiel, DE
• Andre Schmidt · Herzogenaurach, DE
• Adam Stubbs · Woodhall Spa, GB
• Kai RUSCHMEYER · Fintel, DE
• Christian Hoffmann · Leonberg, DE

Key dates

• Filing date: Jan 11, 2017
• Grant date: Feb 26, 2019
• Expiry date: Jan 11, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/086
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A process of controlling operation in a multi-cylinder engine either during start of operation or low-load conditions is disclosed. The process may include skipping a supply of fuel in a first set of cylinders of the multi-cylinder engine for a pre-defined number of multiple working cycles. The process may further include supplying fuel-air mixture to a second set of cylinders of the multi-cylinder engine for the pre-defined number of multiple working cycles. The process may also include executing combustion of the fuel-air mixture supplied to the second set of cylinders for the pre-defined number of multiple working cycles. In addition the process may include either changing a selection of cylinders included in the first set of cylinders and the second set of cylinders respectively, or switching the supply of fuel, after the pre-defined number of multiple working cycles, from the second set of cylinders to the first set of cylinders.