| Simply put, what we hear is a compression wave traveling through the air. |
| A high speed impact, though, will chemically mix the materials, igniting them and leading to a compression wave and significant overpressure. |
| Multiple product sizes have demonstrated Compression Wave Injection technology with consistent emissions reductions. |
| Now a compression wave is driven inside the jet. |
| Seismic down-hole tests were performed to measure the speed of compression wave and shear wave at different layers. |
| With a simple geometric model, it is found that one of the main noise sources for the intake stroke is the pressure surge, which is a compression wave due to the compressed air near the intake valve after closing. |
