Skip to main content

MarQuip exhaust system reduces sounds and emissions

The Dutch exhaust manufacturer is working with an Italian boatyard to develop the custom module silencer/SCR system.
The new exhaust system reduces decibel levels and complies with clean emissions limits.

The new exhaust system reduces decibel levels and complies with clean emissions limits.

MarQuip said it created a marine exhaust system that combines the principles of selective catalytic reduction, which eliminates nitrogen oxide compounds, with highly efficient noise reduction.

The Dutch exhaust manufacturer is working with an Italian boatyard to develop the custom module silencer/SCR system, which is compliant with International Maritime Organization Tier III emissions standards and reportedly reduces sound levels by 35 db(A).

The silencer/SCR module is integrated into MarQuip’s water-injection side of a system that also features underwater exhaust. The exhaust manufacturer said the first challenge was to stay within the maximum back pressure specified by the engine manufacturer.

This can be complicated because adding after-treatment equipment to exhaust systems can increase back pressure. A specially designed underwater scoop helped reduce it.

Noise reduction was the second step, and MarQuip said it combined the high-frequency capabilities of the SCR unit with dedicated low- and medium-frequency components.

The final step was to marinize the SCR module. MarQuip said it knew from experience that pressure pulses in waves of up to 500 mbar in heavy weather cause equipment failure, so its engineers designed the unit to withstand up to 600 pressure pulses.

Production of the new silencer/SCR system has begun. It is slated for delivery in September.

Related

Norm#4

Ten Ways To Sell in a Tough Economy

These keys to successful selling can help you create customers who keep coming back, even when sales dip

1_ASA.BOARD

ASA Names New Board Members

The American Sportfishing Association filled two at-large seats and two regional seats on its board of directors.

1_EXEC.SEARCH

Dammrich, Hopkinson Partner With Marine Resources Recruitment

The industry veterans will help clients fill executive-suite, marine industry job openings around the world.

1_PULSE.PING.0630

DEALERS: How Was Business in the First Half of 2022?

With the second quarter coming to a close, was there parity between the budget and financial performance in the first six months? Take the Pulse Report survey here.

1_PMMPODCAST

Passagemaker Relaunches Podcast

Trawler Talk aims to connect with those who are interested in the cruising lifestyle, with episodes dropping every other week

1_AQUILA

Aquila Celebrates 10 Years

The builder said it has sold more than 500 power cats and is the No. 1 brand in that segment.

1_FISHERY.COUNCILS

Commerce Department Appoints Fishery Council Members

The Center for Sportfishing Policy said the new members are favorable to the recreation sector

Norm#4

Doing Good for a Good Night’s Sleep

The Massachusetts Marine Trades Association partnered with “A Bed for Every Child” to build beds for families in need.