Abgasemissionsregeleinrichtung für ein Hybrid-Fahrzeug

摘要

An exhaust emission control system of a hybrid car capable of relieving a load upon an engine fuel injection device by eliminating a use of sub-injection and recovering from S-poisoning as well as purifying an exhaust gas even by eliminating the use of sub-injection. The exhaust emission control system of an internal combustion engine, used for the hybrid car traveled by two types of power sources of a diesel engine (1) and an electric motor (101), includes a combustion heater (17) as separate body from the engine, a catalyst (39), provided in an exhaust passageway (42), for purifying an engine exhaust gas, a combustion gas passageway through which a combustion gas emitted from the combustion heater (17) flows toward the catalyst (39), and a three-way valve (97') for introducing the combustion gas to the catalyst via the combustion gas passageway (99) or an EGR passageway (90) when the diesel engine (1) is in a stop state and when the electric motor (101) is in a driving state.