| 摘要 |
A secondary shock reducing method in starting a hybrid engine is provided to reduce shock during first explosion by minimizing target torque during first explosion in an engine and to control secondary shock changed according to an OPD(Operating Point Determination), at uniform level by keeping target torque uniform. A secondary shock reducing method in starting a hybrid engine comprises a follow-up control step for executing engine demand torque fixed at a constant value, by adding predetermined torque to friction torque if an engine start bit and a fuel injection bit are input at the same time(S302,S304); a maintenance and control step for keeping engine demand torque uniform by delaying engine demand torque for the predetermined time to a hybrid mode range while predetermined torque is added to friction torque(S306,S308); and a follow-up control step for determining target torque with reference to maximum torque at the present speed and engine maximum torque at the normal state by executing engine demand torque according to an OPD, if an engine start bit and a fuel injection bit are not input at the same time or after a maintenance and control step is executed, and then passing only target torque of a low-frequency band by restraining the inclination of target torque(S310,S312,S314,S316,S318).
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