Exhaust-gas recirculation system and method for exhaust-gas recirculation

摘要

An exhaust-gas recirculation system (2) for a turbocharged internal combustion engine (1) of a motor vehicle comprises an exhaust-gas lambda sensor (16) arranged downstream of the turbocharger (6), a speed sensor (17) for measuring the speed of the turbocharger (6), and an exhaust-gas recirculation valve (13) which can be controlled as a function of measurement results from the exhaust-gas lambda sensor (16) and from the speed sensor (17).