Regenerative catalytic apparatus in hybrid vehicle

摘要

The exhaust emission of a hybrid vehicle is improved by providing a technology of achieving effective functioning of a regenerative catalytic apparatus (14) by utilizing a feature of the hybrid vehicle of being driven by selectively operating an internal combustion engine (100) and an auxiliary power source (200). The regenerative catalytic apparatus (14) in a hybrid vehicle is provided with a hybrid mechanism for driving the vehicle by selectively operating an internal combustion engine (100) and an auxiliary power source (200); an exhaust-purifying catalyst (14) provided in an exhaust passage (12) of the internal combustion engine for purifying exhaust flowing in the exhaust passage (13); and heat-storage mechanism for storing heat generated in the internal combustion engine (100) while the internal combustion engine is in an operating state, and utilizing the stored heat to suppress decrease in the temperature of the exhaust-purifying catalyst after the internal combustion (100) engine is stopped.