| 摘要 |
PURPOSE: A turbocharger engine is provided to prevent shock noise in a turbo lag and a decelerating operation. CONSTITUTION: An exhaust turbine of a turbocharger(13) is rotated by using energy of exhaust gas from an exhaust manifold(12) of an engine(11) in operation of the engine. Then, a compressor(14) compresses air inputted through an air cleaner(15). The compressed air is cooled through an inter-cooler(16) for being transferred to an intake manifold(17). Herein, a larger amount of air is transferred to a combustion chamber for improving output. In acceleration, a throttle valve of a throttle body(31) is opened. In case of a sudden change in a TPS(Throttle Position Sensor), an auxiliary valve(32) is opened by an actuator(34) for inputting the air to the intake manifold while not passing through the compressor. In case of change in an absolute pressure in the intake manifold over a reference value, the auxiliary valve is turned off. Shock noise in deceleration is prevented through dropping a boosting pressure by turning on the auxiliary valve.
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