Marine Engine
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Several parts are essential for its proper functioning. Here are the main categories of components found in a marine engine:
Anodes - Rope Cutter - Damper - Engine Instruments - Exhaust - Purifier - Filter - Tank - Engine Mount - Coupling - Ventilation - Propellers - Engine Bed
1. Propulsion System
- Propeller Shaft: Transfers power from the engine to the propeller.
- Propeller: Generates the thrust needed to move the boat forward.
- Gearbox (Reverse Gear): Changes the direction of the propeller’s rotation (forward/reverse).
- Shaft Seal: Ensures watertightness where the shaft passes through the hull.
2. Engine Block
- Cylinders: Where combustion occurs.
- Pistons: Convert the pressure created by combustion into linear motion.
- Piston Rings: Ensure sealing between the piston and the cylinder.
- Valves: Control the intake of the air/fuel mixture and the exhaust of burned gases.
- Cylinder Head: The upper part of the engine, containing valves and sometimes injectors.
3. Cooling System
- Water Pump: Circulates water or coolant to maintain an adequate temperature.
- Heat Exchanger: Cools the water or coolant using seawater.
- Thermostat: Regulates the engine temperature.
4. Fuel System
- Fuel Pump: Supplies fuel to the engine.
- Fuel Filter: Filters impurities from the fuel.
- Injectors: Spray fuel into the cylinders.
5. Exhaust System
- Exhaust Manifold: Collects exhaust gases from the cylinders.
- Silencer: Reduces engine noise.
6. Electrical System
- Alternator: Generates electricity for the boat’s electrical systems.
- Spark Plugs (for gasoline engines): Produce the spark necessary for combustion.
- Battery: Stores electrical energy.
7. Lubrication System
- Oil Pump: Circulates oil to lubricate internal engine components.
- Oil Filter: Removes impurities from the oil.
- Oil Sump: The oil reservoir at the base of the engine.
8. Other Components
- Turbocharger (if present): Increases the amount of air in the cylinders to improve performance.
- Compressor: Used in some engines to increase intake air pressure.