Patent ID: 9322351
Filing Date: 2016-04-26
CPC Classification: F01N,F02D,Y02T

Claim Text:
1. A method for operating an internal combustion engine with an exhaust gas cleaning system that includes at least one catalytic or filter-effective exhaust gas cleaning component, where, in connection with a cold start or a warm-up of the internal combustion engine, the internal combustion engine is operated with a cold start engine operation method for heating up the exhaust gas cleaning component, the cold start engine operation method having predefined values for predefined internal combustion operation variables, comprising: estimating an HC storage amount of hydrocarbons stored in one or more of the at least one exhaust gas cleaning component; and activating the cold start engine operation method when the estimate indicates that the HC storage amount exceeds a predefined HC storage amount limit value, wherein the cold start engine operation method comprises wherein the predefined desorption temperature range is where a desorption of hydrocarbons stored in the exhaust gas cleaning component takes place and is below a start-up temperature of the heated at least one exhaust gas cleaning component.