| 摘要 |
A knocking reduction device of a vehicle and a knocking reduction method thereof are provided to reduce knocking in a tip-in section in case of high-load operation by controlling the temperature of the air flowed into the intake pipe less than 70°C. A knocking reduction device of a vehicle comprises: an engine intake pipe(4) delivering air to a cylinder(2) of an engine; a heat exchanger(6) which is bored through the engine intake pipe and in which air conditioner refrigerant is flowed; and an electronic control unit(8) injecting the air conditioner refrigerant into the heat exchanger in case the temperature of the air flowed in the engine intake pipe exceeds the constant temperature.
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