Marine Engine Cooling System Diagram. Seawater cooled models 6a 7 cooling system flow diagram mercruiser engines with standard cooling systems use seawater water in which the boat is being oper ated to remove the heat given off by the engine. This means that there is a small tank on the top of the engine that uses a combination of fresh water and coolant.
The marine unique issue so unlike automotive applications where air is the primary element in extracting heat from the engine in marine applications we count on seawater or lake water or river water to do the job. 5 rows description. Closed cooling flow diagrams.
5 rows description.
Learning objectives as a result of this lesson you will be able to. Main bearing system oil at an operating pressure of 55kgcm2 is also supplied to the pistons at 25 35kgcm2 in order to act as a coolant for the working piston crown. Designing a marine exhaust system for a boat is something that apparently takes the back seat during the planning stages when doing a repower. The inlet valve is open and a fresh charge of air is being drawn or pushed into the cylinder by the turbocharger.