초록 ▼

A method for operating an internal combustion engine system includes operating the internal combustion engine system in a desulfurization mode each time following a cold-start of the engine prior to the transition to a normal operating mode. The internal combustion engine system includes (1) an exha

A method for operating an internal combustion engine system includes operating the internal combustion engine system in a desulfurization mode each time following a cold-start of the engine prior to the transition to a normal operating mode. The internal combustion engine system includes (1) an exhaust line; (2) a sulfur-rich exhaust purification component comprising at least two exhaust purification units connected in series in the exhaust line; and (3) a secondary air supply having separate branches for the sulfur-rich exhaust purification units.

대표청구항 ▼

[ What is claimed is:] [2.]2. A method for operating an internal combustion engine system comprising an exhaust line; a sulfur-rich exhaust purification component comprising a plurality of exhaust purification units connected in series located in the exhaust line; and a secondary air device, said me

[ What is claimed is:] [2.]2. A method for operating an internal combustion engine system comprising an exhaust line; a sulfur-rich exhaust purification component comprising a plurality of exhaust purification units connected in series located in the exhaust line; and a secondary air device, said method comprising:following each cold-start of the engine, heating the sulfur-rich exhaust purification component to a predetermined temperature;supplying secondary air at one or more points in the exhaust line to the sulfur-rich exhaust purification component or to an exhaust line section upstream of the sulfur-rich exhaust purification component during said heating;terminating said supplying of secondary air;switching to desulfurizing the sulfur-rich exhaust purification units in sucession;introducing secondary air into the exhaust line at one or more points downstream of the corresponding sulfur-rich exhaust purification unit undergoing desulfurization; andsubsequently operating the engine in a normal operating mode.