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.
Author:
Updated:
Original:
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

Yamaha Rightwaters To Launch Trash Interceptor

Developed in conjunction with the FAMU-FSU College of Engineering, the device is designed to remove debris from waterways before it reaches the ocean.

Vessel Vanguard Releases Latest Management Platforms

The company upgraded the features, functionality and security of its suite of maintenance management programs.

Cox Marine Appoints COO

Gavin Wesson will oversee the continued development of the company’s diesel outboard.

Netherlands Eases Covid Measures as Metstrade Approaches

The moves by the Dutch government open up travel prior to the show, which is scheduled for Nov. 16-18 at RAI Amsterdam.

Coming to America

Swedish electric boat builder X Shore has established a North American sales office in Newport, R.I.

Registration Opens for ABYC Standards Week

Scheduled for Jan. 10-14, the conference includes sessions to review current and new standards, the group’s annual meeting and the Marine Law Symposium.

New Initiatives To Push Boating Safety

The Marine Industries Association of Southwest Florida and Discover Boating are promoting on-water safety, one in a digital format and and one analog.