Patent ID: 9518486
Filing Date: 2016-12-13
CPC Classification: F01N,F02D,F02M,Y02T

Claim Text:
1. A method for operating an internal combustion engine, the method comprising: post-injecting fuel, by an injector in at least one cylinder of the internal combustion engine, to assist in regeneration of a particle filter situated in an exhaust gas tract of the internal combustion engine and downstream from an oxidation catalytic converter; controlling an advance of a closing time of an exhaust valve of a cylinder of the internal combustion engine in such a way that intermediate compression of exhaust gas in the combustion chamber of the cylinder occurs, wherein the advance of the closing time is performed in a first temperature range for a temperature of the oxidation catalytic converter, and the post-injections occur in a second temperature range for the temperature of the oxidation catalytic converter, wherein an upper range limit of the first temperature range has a lower value than an upper range limit of the second temperature range; and wherein within the first temperature range, the advance of the closing time of the exhaust valve is reduced as the temperature of the oxidation catalytic converter increases.