Piezoelectric power generation device using pulse vibration of vehicle tail gas to generate power and power generating method

A technology of pulse vibration and piezoelectric power generation, applied in machines/engines, mechanisms that generate mechanical power, mechanical equipment, etc., can solve problems such as higher costs, complex energy transmission routes, and complex exhaust system structures, and save resources. , The effect of reducing exhaust noise and simple structure

Active Publication Date: 2014-07-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Application Information

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Problems solved by technology

Although the working power of the sensor is small, due to the complexity of the energy transmission route or the need for a special power supply, the structure of the exhaust system will be complicated and the cost will be high

Method used

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  • Piezoelectric power generation device using pulse vibration of vehicle tail gas to generate power and power generating method
  • Piezoelectric power generation device using pulse vibration of vehicle tail gas to generate power and power generating method
  • Piezoelectric power generation device using pulse vibration of vehicle tail gas to generate power and power generating method

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0028] The exhaust gas produced by the engine 1 enters the exhaust gas catalytic conversion device 5 through the exhaust manifold 2 and the connecting flange 3. The oxygen sensor 4 can measure the oxygen content in the exhaust gas and transmit the information to the vehicle. The catalytic conversion device 5 is used to catalyze the harmful substances in the exhaust gas to undergo chemical reactions, so as to reduce the emission of harmful gases. The exhaust gas after catalytic treatment passes through the flexible joint for preliminary noise reduction, and the oxygen content, pressure and temperature signals of the exhaust gas after preliminary noise reduction are measured by the oxygen sensor 7, pressure sensor 8 and temperature sensor 17, and transmitted to the vehicle. The exhaust gas enters the muffler 13 through the connecting flange 12, and finally enters the at...

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Abstract

The invention relates to a piezoelectric power generation device using the pulse vibration of vehicle tail gas to generate power and a power generating method and belongs to the technical field of piezoelectric power generation. The piezoelectric power generation device comprises a silencer in a vehicle exhaust system; the silencer in the vehicle exhaust system is provided with a gas inlet pipe and an exhaust pipe; the piezoelectric power generation device is characterized in that the silencer in the vehicle exhaust system is divided into two resonance cavity chambers; a plurality of groups of resonant cantilever beam piezoelectric vibrators are arranged in each resonance cavity chamber; two electrodes of the resonant cantilever beam piezoelectric vibrators are lead out by leads. The piezoelectric power generation device using pulse vibration of the vehicle tail gas to generate power and the power generating method have the advantages of simple structure, no heating, no electromagnetic interference, no pollution, easiness for realizing the miniaturization of the mechanism, integration and the like.

Description

technical field [0001] The invention relates to a piezoelectric power generation device and a power generation method using pulse vibration of vehicle exhaust to generate power, and belongs to the technical field of piezoelectric power generation. Background technique [0002] Engine noise is the main noise source of internal combustion engine vehicles. The noise generated by the air vibration caused by the intake and exhaust can directly radiate to the surrounding air, which is the largest noise source of the engine. Engine exhaust is intermittent, and there are air pressure pulsations in the exhaust pipe, so when the exhaust gas is discharged into the atmosphere, it will produce noise with a relatively complex spectrum. The muffler can reduce the exhaust pressure by various means, attenuate the exhaust pulsation, and make the exhaust energy lose faster. However, under normal circumstances, this part of energy is converted into heat energy in the muffler and directly disch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G7/08
CPCF03G7/08
Inventor 臧利国赵又群李波李小龙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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