Overhead composite exhaust muffler for emergency power supply vehicle

Abstract

The utility model discloses a kind of top-mounted composite exhaust mufflers for emergency power supply vehicle, to solve the problem of poor sound attenuation effect and large exhaust resistance caused by unreasonable structure design in traditional sound attenuation structure. The exhaust muffler of the utility model, including first shell, second shell, air inlet pipe and air outlet pipe;First shell is arranged at the top of emergency power supply vehicle, and the sound attenuation cavity is formed in first shell, and second shell is located in the sound attenuation cavity, and sound-absorbing material is filled between first shell and second shell, and the exhaust cavity is formed in second shell, air inlet pipe passes through first shell and extends into exhaust cavity, air outlet pipe passes through first shell and extends along exhaust cavity, and air inlet pipe is connected with diesel engine exhaust port of emergency power supply vehicle. Top-mounted arrangement effectively avoids that exhaust muffler occupies the space of other important structure of power supply vehicle, and meanwhile, exhaust gas generated by diesel engine can be discharged from the top of emergency power supply vehicle along air outlet pipe, to avoid interfering with the lateral working environment of emergency power supply vehicle.

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