Methods and systems are provided to improve engine temperature control. Cylinders
scheduled for deactivation may have their exhaust retained in the cylinder by holding an …

Related US Application Data continuation-in-part of application No. 13/004,839, filed on Jan.
11, 2011, now Pat. No. 8,616,181, and a continuation-in-part of application No. 13/004,844 …

Methods and systems are provided for enhancing turbocharger performance for a boosted
engine system configured to operate with a pattern of deactivated cylinders. In one example …

Various methods and arrangements for determining a com bustion control parameter for a
working chamber in an engine are described. In one aspect, an engine controller includes a …

US9506411B2 - If method and system for engine knock control - Google Patents US9506411B2
- If method and system for engine knock control - Google Patents If method and system for …

Methods and systems are provided for particulate matter control in an engine configured for
skip-fire operation. A cylinder pattern selected for selective cylinder deactivation, including a …

Jun. 3, 2015, now Pat. No. 9, 541, 050, which is a continuation of application No. 14/188,
479, filed on Feb. 24, 2014, now Pat. No. 9, 086, 024, which is a continuation of application …

In one aspect, an engine controller for an engine including multiple working chambers is
described. The engine controller includes a mass air charge determining unit that estimates …

Abstract Systems and methods are provided for increasing the accuracy of air charge
estimation for a cylinder that is selectively deactivatable. A controller may deactivate the …

A variety of methods and arrangements for improving the fuel efficiency of internal
combustion engines based on skip fire operation of the engine are described. In one aspect …