Patent ID: 8176902

Claim:
An internal combustion engine system, comprising: an internal combustion engine, a make-up gas installation for supplying make-up gas to the internal combustion engine wherein the make-up gas installation includes a control section, an exhaust gas installation for evacuating exhaust gas from the internal combustion engine, an exhaust gas recirculation installation for extracting exhaust gas from the exhaust gas installation and introducing the extracted exhaust gas into the make-up gas installation, at least two make-up gas paths through which gas can flow in parallel that are formed in the control section of the make-up gas installation, a make-up gas valve for each of the at least two make-up gas paths, wherein the make-up gas valve controls a cross section through which gas flows of the respective make-up gas path and controls an exhaust gas recirculation rate of the exhaust gas recirculation installation, wherein the make-up gas valve is arranged in the at least two make-up gas paths, and wherein the make-up gas valves are fast switching valves, and a valve control provided for actuating the make-up gas valves, said valve control driving during operation of the internal combustion engine the make-up gas valves to generate pressure fluctuations in the make-up gas installation, wherein said pressure fluctuations with regard to at least one of frequency and amplitude are a function of an exhaust gas recirculation amount to be adjusted, so as to adjust the exhaust gas recirculation amount as a function of an current operational state of the internal combustion engine.