A hybrid electric vehicle (HEV) includes an internal combustion engine and a motor/generator configured to drive the engine or be driven by the engine to generate electricity to charge a high voltage (HV) battery and/or drive an electric traction motor. The HEV includes an exhaust system, a HV system electrically coupling the HV battery and the electric traction motors, and a control system including a controller for monitoring an underhood environment of the HEV and performing a cooling operation to cool the exhaust system. The controller is programmed to determine if a temperature of the underhood environment, the internal combustion engine, and/or the exhaust system is above a predetermined threshold indicating a potential degradation of HV system performance, and operate the internal combustion engine in fuel shut-off to generate a flow of air to the exhaust system for cooling of the exhaust system to thereby cool the HV system.
HYBRID VEHICLE RAPID CATALYST EXHAUST COOLING
2025-03-06
Patent
Electronic Resource
English
IPC: | F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen |
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