Mild-hybrid electric vehicle (MHEV) emissions aftertreatment system

A vehicle, comprising:

• an engine configured to generate power from a combustion reaction, where the combustion reaction produces exhaust gases;
• a battery configured to store electrical power;
• an exhaust line comprising an exhaust port configured to deliver the exhaust gases from the engine to an external environment of the vehicle;
• an after-treatment system configured to reduce Nitrogen Oxides (NOx) content in the exhaust gases;
• an Exhaust Gas Recirculation (EGR) line fluidly coupled to an inlet portion of the exhaust line disposed upstream of the after-treatment system and configured to recirculate a first portion of the exhaust gases from the inlet portion of the exhaust line;
• an EGR pump comprising an inlet line fluidly coupled to an outlet portion of the exhaust line disposed downstream of the after-treatment system such that the EGR pump recirculates a second portion of the exhaust gases from the outlet portion of the exhaust line, and
• a NOx adsorber fluidly coupled to the outlet portion of the exhaust line and configured to capture and store the NOx content from the exhaust gases,
• wherein the NOx adsorber comprises an adsorber inlet line fluidly connected to the outlet portion of the exhaust line and an adsorber outlet line fluidly connected to the outlet portion of the exhaust line, and the outlet portion of the exhaust line extends between the adsorber inlet line and the adsorber outlet line to bypass the NOx adsorber, and
• wherein the inlet line of the EGR pump is fluidly coupled to the outlet portion of the exhaust line downstream of the adsorber inlet line and the adsorber outlet line such that the outlet portion of the exhaust line extends at least from the adsorber inlet line to the adsorber outlet line and to the inlet line of the EGR pump.