In the present invention, an internal combustion engine (1) is mounted for power generation in a series hybrid vehicle and has an exhaust system with an upstream-side catalytic converter (8) and a downstream-side catalytic converter (9). When the temperature of the upstream-side catalytic converter (8) at starting of the internal combustion engine (1) is lower than or equal to a threshold value, the internal combustion engine is operated at low rotation speed and low load with significant ignition timing retardation. When the warm-up of the upstream-side catalytic converter (8) is judged as completed based on the amount of heat input thereto, the internal combustion engine is shifted to operation at rotation speed and load in the vicinity of the optimal fuel consumption point with the ignition timing set in the vicinity of MBT. The operation of the internal combustion engine (1) is continued, regardless of the power generation request, until the warm-up of the downstream-side catalytic converter (9) is judged as completed. When the warm-up of the downstream-side catalytic converter (9) is judged as completed based on the amount of heat input thereto, stopping of the internal combustion engine is permitted.
CATALYST WARM-UP CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE, AND CATALYST WARM-UP CONTROL DEVICE
VERFAHREN ZUR STEUERUNG DER ERWÄRMUNG EINES KATALYSATORS FÜR EINEN VERBRENNUNGSMOTOR UND VORRICHTUNG ZUR STEUERUNG DER ERWÄRMUNG EINES KATALYSATORS
PROCÉDÉ DE COMMANDE DE RÉCHAUFFAGE DE CATALYSEUR POUR MOTEUR À COMBUSTION INTERNE ET DISPOSITIF DE COMMANDE DE RÉCHAUFFAGE DE CATALYSEUR
2024-01-03
Patent
Electronic Resource
English
IPC: | 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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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