| abstract |
An aftertreatment system includes a housing that defines an internal volume. A filter is arranged in the housing, the filter being designed to remove fine dust contained in the exhaust gas. A delta pressure sensor is designed to measure an intake slip pressure value upstream of the filter. An ambient pressure sensor, which is separate from the first delta pressure sensor, is designed to measure an ambient pressure value of an environment in which the aftertreatment system is located. A controller is configured to receive the intake pressure value, receive the ambient pressure value from the ambient pressure sensor, determine a relative intake exhaust pressure value based on the intake pressure value and the ambient pressure value, and adjust an exhaust gas flow rate of the exhaust gas based at least on the relative intake exhaust pressure value. |