Patent ID: 9163572
Filing Date: 2015-10-20
Classification: F02D,F02M,Y02T

Abstract:
1. A method for determining a pressure at an output of an exhaust gas system of an internal combustion engine system of a vehicle, the internal combustion engine system comprising: an internal combustion engine; a fresh air supply; an exhaust system; and a low-pressure exhaust-gas recirculation component including a low-pressure exhaust-gas recirculation valve, which couples the fresh air supply to the output of the exhaust gas system, the method comprising: detecting a mass flow through the internal combustion engine system; detecting an ambient pressure at a fresh air supply of the internal combustion engine system; determining a throttling of the mass flow through the internal combustion engine system by determining throttling of mass flow through the low-pressure exhaust-gas recirculation component as a function of a setting of the low-pressure exhaust-gas recirculation valve; and determining the pressure at the output of the exhaust gas system as a function of the mass flow, the ambient pressure, and the throttling of the mass flow through the internal combustion engine system.