System and method for controlling hybrid electric vehicle using driving tendency of driver

Abstract

A system and method for controlling a hybrid electric vehicle using a driving tendency are provided. The method includes determining a driving tendency level based on data to determine a driving tendency of a driver and determining a target engine torque using an engine torque map based on a vehicle speed and a required torque. Whether the driving tendency level corresponds to a predetermined level is determined as well as whether the required torque is equal to or greater than a torque that corresponds to an optimal operating point of an engine when the driving tendency level corresponds to the predetermined level. The target engine torque is then adjusted when the required torque is equal to or greater than the torque that corresponds to the optimal operating point of the engine.

1 - 3 . (canceled) 
     
     
         4 . A method for controlling a hybrid electric vehicle using a driving tendency, comprising:
 determining, by the controller, a driving tendency level based on data to determine a driving tendency of a driver;   determining, by the controller, whether an idle lock-up charge entering condition is satisfied; and   performing, by the controller, an idle lock-up charge control when the idle lock-up charge entering condition is satisfied,   wherein the idle lock-up charge entering condition is satisfied when an engine is in a driven state, the hybrid electric vehicle is in a coasting state, and an state of charge (SOC) of a battery is less than or equal to an idle lock-up charge entering SOC, and the idle lock-up charge entering SOC is set based on the driving tendency level.   
     
     
         5 . The method for controlling a hybrid electric vehicle using a driving tendency of  claim 4 , wherein in the performing of the idle lock-up charge control, an engine clutch is maintained in an engaged state, and the battery is charged through electric power generation of a motor and an integrated starter and generator. 
     
     
         6 . The method for controlling a hybrid electric vehicle using a driving tendency of  claim 4 , further comprising:
 determining, by the controller, whether an idle lock-up charge release condition is satisfied; and   releasing, by the controller, the idle lock-up charge control when the idle lock-up charge release condition is satisfied,   wherein the idle lock-up charge release condition is satisfied when the coasting state is released or the SOC of the battery is equal to or greater than an idle lock-up charge release SOC, and the idle lock-up charge release SOC is set based on the driving tendency level.   
     
     
         7 . A method for controlling a hybrid electric vehicle using a driving tendency, comprising:
 determining, by the controller, a driving tendency level based on data to determine a driving tendency of a driver;   setting, by the controller, a shift pattern based on the driving tendency level; and   performing, by the controller, a shift control based on the shift pattern.   
     
     
         8 . The method for controlling a hybrid electric vehicle using a driving tendency of  claim 7 , wherein the driving tendency level is any one of a mild level, a normal level, an aggressive level, and a racer level, and the shift pattern is any one of a mild shift pattern that corresponds to the mild level, a normal shift pattern that corresponds to the normal level, an aggressive shift pattern that corresponds to the aggressive level, and a racer shift pattern that corresponds to the racer level. 
     
     
         9 . The method for controlling a hybrid electric vehicle using a driving tendency of  claim 7 , further comprising:
 setting, by the controller, a creep torque map based on the driving tendency level; and   performing, by the controller, a creep torque control using the creep torque map based on a vehicle speed and a shift stage,   wherein the shift stage is determined based on the shift pattern.   
     
     
         10 . A method for controlling a hybrid electric vehicle using a driving tendency, comprising:
 determining, by the controller, a driving tendency level based on data to determine a driving tendency of a driver;   determining, by the controller, whether an engine start condition is satisfied in a state in which an engine is stopped; and   performing, by the controller, an engine start control when the engine start condition is satisfied,   wherein the engine start condition is satisfied when power required by the driver is equal to or greater than a first threshold value, and the first threshold value is set based on the driving tendency level.   
     
     
         11 . The method for controlling a hybrid electric vehicle using a driving tendency of  claim 10 , wherein the engine start condition is satisfied when accumulated driving energy is equal to or greater than a second threshold value, the accumulated driving energy is calculated based on required power during a predetermined time in a section in which a change rate of a position value of an accelerator pedal is a positive value, and the second threshold value is set based on the driving tendency level. 
     
     
         12 . The method for controlling a hybrid electric vehicle using a driving tendency of  claim 10 , further comprising:
 determining, by the controller, whether an engine stop condition is satisfied in a state in which the engine starts; and   performing, by the controller, an engine stop control when the engine stop condition is satisfied,   wherein the engine stop condition is satisfied when power required by the driver is less than or equal to a third threshold value, and the third threshold value is set based on the driving tendency level.   
     
     
         13 - 18 . (canceled)