{"id":74845,"date":"2023-09-26T14:40:09","date_gmt":"2023-09-26T12:40:09","guid":{"rendered":"https:\/\/vetus.com\/blog\/marine-exhaust-system\/"},"modified":"2023-09-28T10:34:36","modified_gmt":"2023-09-28T08:34:36","slug":"marine-exhaust-system","status":"publish","type":"page","link":"https:\/\/vetus.com\/es\/blog\/marine-exhaust-system\/","title":{"rendered":"Marine Exhaust System"},"content":{"rendered":"\n
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VETUS marine exhaust systems are based on \u2018wet\u2019 systems. This is the process in which the cooling water is injected into the exhaust line.\u00a0 This reduces the gas temperature along with reducing fumes.<\/p>\n

With the engine being at the heart of any vessel, it is important to fit the correct engine exhaust system. This will reduce maintenance costs, increase performance and is also safer for the crew.<\/p>\n

The system is often hidden but plays a vital role in making sure the crew are not exposed to toxic exhaust gases by transporting these safely away. It also transports raw water or sea water and protects the engine against water ingress.<\/p>\n

The main components of the exhaust system are the mixing elbow, the waterlock and the gooseneck. Additional components are an exhaust alarm and an air vent. There are also lesser-known options such as a gas water separator for a very quiet installation.<\/p>\n

It starts with the intake grate\/inlet valve<\/strong><\/h3>\n

The first part of a well-designed wet marine exhaust system is the intake grate which only allows the engine cooling water to be sucked in when the engine is running and will filter the water to make sure items like plastic bags are not sucked up.<\/p>\n

The mixing elbow is where hot exhaust gases of up to 400 degrees Celsius are mixed with cold cooling water with temperatures dropping to around 40 or 50 degrees Celsius.<\/p>\n

A flexible hose supplies cooling water to the impeller pump which moves the water through the heat exchanger where it is then forced into the mixing elbow. When installing the system, the hose should be kept as straight down as possible from the mixing elbow to the water lock to ensure a good mix of cold water and hot gases, if this is not possible, a swirler or mixer can be fitted.<\/p>\n <\/div>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/section><\/section>\n\n

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Prevention of backflow<\/strong><\/h3>\n

A waterlock, which fits onto the hose, is used to pump the mix of exhaust gases and cooling water overboard. A VETUS waterlock of the correct capacity will prevent water backflowing into the engine. When the engine is stopped, the waterlock will collect the water in the system, preventing it from damaging the engine.<\/p>\n

VETUS designs waterlocks to withstand temperatures found in exhaust systems and has developed special plastics to use instead of stainless-steel.<\/p>\n

We prefer to use specialist materials for our waterlocks as it has a longer lifespan than stainless-steel. The drawbacks of stainless steel are that it needs oxygen to form a protective layer for longevity. This oxygen is not found in an exhaust system because the engine uses it to burn fuel.\u00a0In addition, the acidic exhaust fumes will start to attack and corrode the stainless-steel.<\/p>\n

Other features of our waterlocks include noise reduction capabilities and a drain plug for winter storage.<\/p>\n

There are three steps to follow when choosing the correct waterlock.<\/p>\n

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  1. Check the exhaust diameter of the mixing elbow<\/li>\n
  2. Check how much room is available and how the hoses in and out of the waterlock are connected<\/li>\n
  3. Calculate how big the waterlock should be so that it is able to contain all the water that is in the system at engine shut down. The more hose there is, the more water there will be in the system.<\/li>\n<\/ol>\n <\/div>\n \n
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    \n \n Discover our exhaust systems<\/span>\n <\/a>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/section><\/section>\n\n\n
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