Vehicular control device and vehicular control method

摘要

In a vehicle including an engine, an electrically heatable catalyst device (EHC), and a first motor generator that generates electric power in accordance with the engine's motive power with the vehicle in a substantially stopped state with a vehicular speed lower than a threshold vehicular speed, an ECU determines, based on an amount A by which an accelerator pedal is operated and a vehicular speed V, whether a large accelerator operation has been performed with the vehicle in the substantially stopped state. If the ECU determines that the large accelerator operation has been performed with the vehicle in the substantially stopped state, the ECU activates an energization timer, and before the energization timer reaches a reference energization period of time α, the ECU energizes the EHC, and once the energization timer has reached the reference energization period of time α, the ECU ceases energizing the EHC.

主权项

1. A vehicular control device for a vehicle including an engine, an electrically heatable catalyst device purifying exhaust gas of said engine, and a first rotating electric machine, said first rotating electric machine generating electric power in accordance with motive power of said engine for a low speed state with a vehicular speed being a speed lower than a first vehicular speed, the vehicular control device comprising:
a relay switching an electrical connection state of said first rotating electric machine and said catalyst device; and an electronic control unit controlling said relay to control energizing said catalyst device, wherein the electronic control unit is programmed to:
responsive to determining that said vehicle is starting up a hill or in said low speed state when an accelerator is operated in an amount exceeding a threshold amount to perform an accelerator operation, estimate a temperature of a catalyst attained when said catalyst device is energized for a reference period of time,responsive to said estimate indicating that said catalyst would attain a temperature lower than a tolerable temperature, energize said catalyst device, andresponsive to said estimate indicating that said catalyst would attain a temperature exceeding said tolerable temperature, avoid energizing said catalyst device.