Kenyon & Kenyon LLP
Hybrid vehicle and control method thereof
A hybrid vehicle that runs in an electric running priority mode after the engine reaches a driving condition appropriate for heating the catalyst (S130-S150) if the system has been started up and the following conditions are met: the vehicle is running in an electric running priority mode in which electric power is used preferentially to drive the vehicle; the temperature (Tc) at which the catalyst becomes activated to purify the engine exhaust falls below a threshold value (Tref); and a battery storage rate (SOC) falls below a threshold value (Scd) which reaches a threshold value (Shv). Then the system switches to a hybrid running priority mode after running on electric power for the length of time necessary to heat the catalyst.
Toyota Jidosha Kabushiki Kaisha
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Masaya Norihiko
Yamamoto Kato