Skip fire engine control

US8651091B2 · kind B2 · utility

Assignee

• Tula eTechnology, Inc. · US

Inventors

• Adya S. Tripathi · San Jose, US
• Christopher W. Chandler · Campbell, US
• Christopher Hand · San Jose, US
• Joshua P. Switkes · Menlo Park, US
• Mark A. Wilcutts · Berkeley, US
• Matthew A. Younkins · San Jose, US

Key dates

• Filing date: Jul 18, 2013
• Grant date: Feb 18, 2014
• Expiry date: Jul 18, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/047
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. In one aspect, the spark timing associated with each fired working cycle is based at least in part on the firing history of the fired working chamber.