1、 The core breakthrough of silent technology

1.1 Revolutionary design of sound insulation structure

The modern silent generator set adopts a "sandwich" composite sound insulation structure: the outer layer is 3mm thick Q235B cold-rolled steel plate, the middle layer is 50mm thick glass fiber sound-absorbing cotton, and the inner layer is 2mm thick damping sound insulation board. This structure can achieve a sound insulation level of 35dB at a frequency of 1000Hz, which is 400% higher than traditional single-layer steel plates. The silent unit of a certain manufacturer in Yunnan optimized the box structure through finite element analysis, controlling the resonance frequency below 200Hz and completely eliminating low-frequency noise.

1.2 Innovative Applications of Silencing Systems

The latest developed multi-stage impedance composite muffler integrates an expansion chamber (length 1.2m), a resonant cavity (volume 8L), and a perforated plate (perforation rate 25%). Test data shows that the muffler can reduce exhaust noise from 110dB to 65dB at 1500rpm, improving efficiency by 30% compared to traditional mufflers. The "intelligent noise reduction" system of a certain brand can automatically adjust the internal baffle of the muffler according to the load, achieving dynamic noise reduction.

1.3 Technical upgrade of vibration control

Using magnetorheological fluid shock absorbers, the damping coefficient can be infinitely adjusted within the range of 0.1-1000N · s/m. Combined with rubber metal composite shock absorbers (hardness 70 Shore A), the vibration transmission rate of the unit can be controlled below 5%. The "suspended base" technology of a certain enterprise is supported by air springs to further reduce the vibration amplitude to 0.05mm, meeting the medical grade vibration standard.