1989-09-01

The Development of an Intake Silencer for a Two-Stroke Cycle-Spark Ignition Engine 891757

In the case of small outboard motors, intake noise is the main sound source. Consequently, intake silencer improvement is a significant factor in the development of outboard motors.
A theoretical simulation was developed to aid the design of improved silencers. This simulation was based on the one-dimensional transfer matrix method (2,3)* and was validated by measurements recorded from a 2-channel FFT experimental testing apparatus. The resonance and anti-resonance characteristics of the measured and calculated results showed good consistency.
The simulation technique was utilized to develop an improved configuration and evaluation on a running engine indicated a significant noise reduction.
This study has demonstrated that the simulation technique is an effective silencer development method.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X