The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2022
Filed:
Apr. 16, 2021
Ford Global Technologies, Llc, Dearborn, MI (US);
Rani Kiwan, Canton, MI (US);
Chris Paul Glugla, Macomb, MI (US);
Brad VanDerWege, Plymouth, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Methods and systems are provided for providing secondary air to an exhaust system during catalyst warm-up. In one example, a method may include operating an engine in a thermactor mode responsive to a cold start condition, the thermactor mode including skipping a first number of engine cylinders and producing torque via a remaining number of the engine cylinders, and differently adjusting a cylinder valve of at least one of the first number of the engine cylinders relative to the remaining number of the engine cylinders while operating in the thermactor mode. In this way, exotherms may be generated by the secondary air reacting with fuel in exhaust gas, thus increasing a temperature of the catalyst.