Methods and system for skip-firing of an engine

US10947917B2 · kind B2 · utility

Assignee

• Transportation IP Holdings, LLC · US

Inventors

• Pradheepram Ottikkutti · Erie, US
• Alok Kumar · Supaul, IN
• Michael Majewski · Joliet, US
• Seung-Hyuck Hong · Clifton Park, US
• Kevin McElhaney · Erie, US
• Roy James Primus · Niskayuna, US
• Omowoleola Chukwuemeka Akinyemi · Clifton Park, US
• Thomas Michael Lavertu · Ballston Lake, US
• Santosh Meghani · Bengaluru, IN

Key dates

• Filing date: Feb 16, 2018
• Grant date: Mar 16, 2021
• Expiry date: Feb 16, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/0814
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Various methods and systems are provided for skip-firing an engine. As one embodiment, a method for an engine includes firing all cylinders of the engine and not altering the closing timing of the intake valves when fueling demands are greater than a threshold. The method further includes skip-firing the engine when fueling demands are less than a threshold, and holding open the intake valves of skipped cylinders for a greater duration than intake valves of firing cylinders.