Caterpillar Inc.
THERMAL MANAGEMENT LIGHTOFF ASSIST SYSTEMS AND METHODS FOR REGENERATING OXIDATION CATALYST IN EXHAUST SYSTEM

Abstract:

A compression ignition internal combustion engine system includes an engine and an exhaust system with an upstream exhaust conduit, and an oxidation catalyst device (DOC). Systems and methods of desulfating the oxidation catalyst by the injection of a lightoff fluid to promote ignition of uncombusted fuel in the exhaust stream are disclosed.