21DMRN62 MARINE ENGINEERING & CONTROL SYSTEMS – III 4003 Course Objective: After successful completion of this course, cadet should be able to understand the concept of Marine Engineering Auxiliaries, understand the Main Propulsion units, understand the automation and control engineering, UNIT I MARINE ENGINEERING (AUXILIARIES) 12 1. Fuels: Different types and properties. Fuel storage and supply on board the ship. Treatment of fuel. 2. Turbines: Impulse and reaction turbine, gas, turbines, steam turbine operations and care. Turbines as prime movers for various duties including as cargo pumping operations of tankers. 3. Propellers and main shafting: types of propellers, fixed pitched and variable pitch propellers. Pitch, pitch angle, real and apparent slips, propeller efficiency, calculations. Shafting tail end shaft, thrust block, intermediate shaft, alignment. Effect of condition of hull, tips of propeller on fuel coefficient, fuel consumption and propeller efficiency. Calculate bunker fuel required for the voyage, speed for a given daily consumption, speed required to complete a voyage with given consumption 4. Deck machinery; cargo winch, windlass, lifeboat winch. Hydraulic, pneumatic electric drives. Safety features 5. Pollution control: Sewage disposal, methods, limits, regulation. Bilge oil water separator, regulations. Control of pollution form machinery exhausts, block diagram for the operation of a waste incinerator regulations UNIT II MAIN PROPULSION UNITS (IC ENGINES & OTHERS) 12 1. Process of exhausting, scavenging and supercharging. Scavenge fire. 2. Lubricating oil, jacket (and other) cooling water system. Types of lubricating oils for different duties. Simple CW, L.O. and F.O. flow circuit for large diesel engine. Reasons and method of chemical treatment of CW system. Testing of jacket cooling water. 3. Operations of IC engine as main propulsion engine. Warning up, starting manoeuvring, reversing and full power running of the main engine. Limitations and care required on IC engine during manoeuvring and at full power. Purpose of turbocharger and need to control rpm whilst carrying out turbocharger washing. 4. Selection criterion of IC engines, power weight ratio, specific fuel consumption, indicated power, brake power, shaft power, delivered power, thrust power, effective power.5. Various efficiencies, calculation. Maximum continuous rating (MCR). Calculation of fuel consumption, economic speed. Heat balance, various losses and calculations 6. Other Propulsion units: Steam turbine, gas turbine as main propulsion units. Advantage and disadvantages. Manoeuvring operations. Steam Turbines: 1. Impulse & Reaction Turbines- Use of Steam Turbine for Main Propulsion & also for 2. Other duties including Cargo Pumping—Steam Turbine operation &care. 3. Typical Lay-Out of Closed Steam Cycle— Boiler & Steam Turbine arrangement 4. Gas Turbines- Gas Turbine as main Propulsion Unit-Its basic principle of operation UNIT III PROPELLERS & MAIN SHAFTING 12 1. Types of Propellers-Fixed Pitch & Variable Pitch Propellers- Pitch, Pitch Angle, Real & Apparent Slip Propeller efficiency & calculations. 2. Shafting- Thrust Shaft-Intermediate Shaft-Propeller Shaft—Thrust Block- Plummer Block—Stern Tube Bearing & Gland- Lubrication & Sealing arrangement. Alignment of Shafts. UNIT IV AUTOMATION & CONTROL ENGINEERING 12 1. Introduction & growth in shipboard operations-Understanding Terminology-Sensors & Measuring elements for Temperature, Pressure, Level Flow etc- Transmitters & Actuators. 2. Automatic control systems- Open & Closed Loop Systems- Controllers & Proportional Controllers. 3. Pneumatic, Hydraulic, Electric & Electronic Control Systems- Applications to various shipboard operations. 4. Bridge Control of Main Propulsion System- Electric Telegraph operation- manoeuvring aids – Operation of Control Pitch Propeller & Bow Thruster. 5. Arrangements necessary for appropriate and effective engineering watches to be maintained for the purpose of safety under normal circumstances and UMS operations. Arrangements necessary to ensure a safe engineering watch is maintained when carrying dangerous cargo. 6. Liquid Cargo Loading—Storage & Discharge Operations Monitoring—Remote Level Gauges & Control of Valves. Remote Control Operation of Hatch Covers- Remote operation of Ballast System. 7. Information Display, Data Logging & Alarm Systems—Testing & Maintenance UNIT V SAFETY ARRANGEMENTS 12 1. Fire detectors, smoke, heat, flame etc. fire alarm circuits. 2. Firefighting systems. Fixed firefighting installation for engine room, accommodation and cargo holds. CO2 flooding, high pressure water system, water sprinkler system, bulk dry powder and foam systems. 3. Inert gas for cargo. Inert gas production, generation from boiler fuel gas etc. inert gas system plant. Use of O2 analyzer, explosive meter, dragger pump and other portable measuring instruments. 4. Smoke helmets, breathing apparatus, fire suit and other safety equipment 5. Lifeboat engine, emergency fire pump engine, lifeboat winch, operation and care. Course Outcome: CO – 1: Calculate bunker fuel required for the voyage, speed for a given daily consumption, speed required to complete a voyage with given consumption. CO – 2: Understand the Deck machinery; cargo winch, windlass, lifeboat winch. Hydraulic, pneumatic electric drives. Safety features. CO – 3: Understand the Process of exhausting, scavenging and supercharging. Scavenge fire. CO – 4: Understand the Selection criterion of IC engines, power weight ratio, specific fuel consumption, indicated power, brake power, shaft power, delivered power, thrust power, effective power. CO – 5: Understand the types of propellers. TEXT BOOKS: 1. Reed, “Engineering Knowledge for Deck Officers”, 2nd Edition, Reprint 1996 2. Reed, “General Engineering Knowledge Vol 8”14th Edition, Reprint 2009 3. Hannah & Hiller, “Mechanical Engineering Science” 4. Souchette& Smith, “Marine Auxiliary Machinery”, 7th Edition, Reprint 2010 5. JK Dhar, “Engineering Knowledge”, 10th Edition REFERENCE BOOKS: 1. L. Jackson & T. Morton, “General Engineering Knowledge for Marine Engineer”, IME Publications, Reprint 1997 2. “Basic Electro Technology”, Thomas Reed Publications, 8th Edition, 2014 3. Gth Flanogan, “Marine Engineering Series – Marine Boilers”, Henemann Professional Publication, Reprint Edition, 2009 4. Wharton A.S, “Marine Engineering Series Diesel Engines”, Henemann Professional Publication, 6th Edition, Reprint, 2008 5. D.W. Smith, “Marine Auxiliary Machinery”, Thomas Reed Publications, 3rd Edition 6. G.O. Watson, “Marine Electrical Practice”, Thomas Reed Publications