RESONANT TYPE OF NOISE REDUCTION DEVICE CAPABLE OF COMPENSATING A TEMPERATURE AND REDUCING EXHAUST NOISES EFFECTIVELY

摘要

PURPOSE: A resonant type of A noise reduction device, capable of compensating a temperature is provided to reduce exhaust noises more effectively than any operation condition because a resonant volume is controlled considering the temperature of exhaust gases and the number of rotations of an engine.;CONSTITUTION: A resonant type of noise reduction device capable of compensating a temperature comprises an exhaust pipe(10), a branch pipe(11), a vessel unit(12), a resonance volume variable unit(16), an exhaust gas temperature measuring unit(15), a sensor for the number of rotations of an engine(18), a control unit(17), and a driving unit. The branch pipe is branched into the exhaust pipe. The vessel unit is connected through a hole of the branch pipe. The resonance volume variable unit controls a volume of a vessel unit. The exhaust gas temperature measuring unit is inserted into the exhaust pipe near the branch pipe. The control unit calculates resonant volume according to an inputted signal from the exhaust gas temperature measuring unit and the sensor for the number of rotations of an engine. The control unit offers the signal to the resonance volume variable unit. The driving unit changes the resonant volume by receiving the signal from a fisherman.;COPYRIGHT KIPO 2012