Engine system with turbulence assisted damping of low frequency sound
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 6, 2018
Issued Date -
N/A
app pub date -
May 20, 2016
filing date -
May 20, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present disclosure relates to an engine system comprising an ICE; an exhaust system; and an engine control unit for controlling operation of the engine system between at least a first operating state resulting in a first exhaust temperature range, and a second operating state resulting in a second, higher, exhaust temperature range. The exhaust system comprises a low frequency sound attenuation portion including a first tubing section having a first flow area; a second tubing section, having a second flow area smaller than the first flow area; and a third tubing section having a third flow area greater than the second flow area. The low frequency sound attenuation portion is dimensioned to achieve laminar flow through the third tubing section when the engine system is in the first operating state; and turbulent flow through the third tubing section when the engine system is in the second operating state.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully