Method for controlling powertrain of hybrid vehicle
AssigneesHyundai Motor Company, Kia Corporation
InventorsSung Mu Choi, Ji Ho Cho
Life of this patent
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Abstract
A method for controlling a powertrain of a hybrid vehicle includes the following steps performed by a hybrid controller: determining whether an ambient air temperature is lower than a predetermined temperature; driving a motor and operating a heating disc of an electrically heated catalytic converter disposed in an exhaust pipe of an internal combustion engine during a predetermined operating time when an ambient air temperature is lower than a predetermined temperature; supplying ambient air to the heating disc; and varying a flow rate of the ambient air supplied to the heating disc in response to a temperature change of the heating disc.
Claims8
A method for controlling a powertrain of a hybrid vehicle including an internal combustion engine and a motor, the method comprising:
- determining, by a hybrid controller, whether an ambient air temperature is lower than a predetermined temperature;
- driving, by the hybrid controller, the motor when the ambient air temperature is lower than the predetermined temperature;
- operating, by the hybrid controller, a heating disc of an electrically heated catalytic converter of an internal combustion engine;
- supplying, by the hybrid controller, ambient air to the heating disc at a first flow rate while operating the heating disc;
- determining, by the hybrid controller, whether a temperature of the heating disc exceeds a limit temperature;
- and
- when the temperature of the heating disc exceeds the limit temperature, supplying, by the hybrid controller, the ambient air to the heating disc at a second flow rate higher than the first flow rate to lower the temperature of the heating disc.
A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
- program instructions that determine whether an ambient air temperature is lower than a predetermined temperature;
- program instructions that drive the motor when the ambient air temperature is lower than the predetermined temperature;
- program instructions that operate a heating disc of an electrically heated catalytic converter of an internal combustion engine;
- program instructions that supply ambient air to the heating disc at a first flow rate while operating the heating disc;
- program instructions that determine whether a temperature of the heating disc exceeds a limit temperature;
- and
- program instructions that supply the ambient air to the heating disc at a second flow rate higher than the first flow rate to lower the temperature of the heating disc, when the temperature of the heating disc exceeds the limit temperature.
Dependencies are inferred from the claim text.