Marine EngineeringKnowledge & Articles

Comprehensive technical comparison of MAN B&W ME-C and MC-C low-speed two-stroke engines, including control philosophy, fuel injection, exhaust valve control, HPS/HCU systems, diagnostics, maintenance, and troubleshooting.

Main engine overhaul scope for MAN B&W two-stroke engines, including piston, liner, cover, exhaust valve, bearings, crankshaft checks, and documentation requirements.

Comprehensive guide to marine main engine overhaul for large low-speed two-stroke engines, covering planning, dismantling, component inspection, measurements, reconditioning, reassembly, testing, and reporting.

Marine diesel engine piston overhaul guide covering piston crown inspection, ring groove measurement, piston rings, skirt, cooling spaces, piston rod or pin arrangements, reconditioning, reassembly, and post-overhaul checks.

Marine engine connecting rod inspection guide covering big-end bearing inspection, small-end bush checks, crankpin condition, bearing clearance, fasteners, lubrication, alignment, failure diagnosis, reassembly, and post-overhaul verification.

Marine engine crankshaft inspection guide covering main journals, crankpins, cracks, NDT, crankshaft deflection measurement, ovality, taper, runout, alignment influence, bearing condition, troubleshooting and documentation.

Comprehensive marine engine main bearing inspection guide covering bearing function, construction, wear patterns, wiping, scoring, fretting, overlay fatigue, clearance, bearing crush, crankshaft main journal condition, lubrication, temperature trends, crankshaft deflection, alignment influence, root-cause investigation and post-maintenance monitoring.

Comprehensive four-stroke marine engine cylinder head overhaul guide covering dismantling, cleaning, combustion-face inspection, inlet and exhaust valves, valve seats, valve guides, springs, rotators, injector sleeves, starting-air equipment, cooling-water spaces, crack inspection, pressure testing, reconditioning, reassembly, installation and post-overhaul monitoring.

Pillar guide to MAN B&W ME-C electronically controlled two-stroke marine engines, covering system architecture, Engine Control System, HPS, HCU, FIVA, ELFI, ELVA, fuel injection, exhaust-valve actuation, Alpha cylinder lubrication, sensors, feedback, redundancy, alarms, diagnostics and troubleshooting philosophy.

Comprehensive guide to the MAN B&W ME-C Hydraulic Power Supply system covering HPS purpose, architecture, oil flow, pumps, pressure control, filtration, accumulators, sensors, oil cleanliness, failure modes, inspection, maintenance, troubleshooting and condition assessment.

Comprehensive technical guide to MAN B&W ME-C fuel injection architecture, electronic control, hydraulic actuation, fuel valves, pressure boosters, common faults, inspection and troubleshooting.

Comprehensive guide to MAN B&W ME-C exhaust valve actuation covering ECS command, FIVA or ELVA control, HPS hydraulic energy, actuator movement, air spring closing, valve condition, alarms, inspection, overhaul and troubleshooting.

Comprehensive guide to MAN B&W Alpha cylinder lubrication systems covering purpose, architecture, electronic dosing, feed-rate philosophy, quills, cylinder oil selection, drain-oil monitoring, liner and piston-ring condition, inspection, maintenance and troubleshooting.

Comprehensive guide to FIVA valve function, electronic command, hydraulic control, feedback alarms, fuel-injection and exhaust-valve actuation relationship, inspection, bench testing and troubleshooting on applicable MAN B&W ME-C engines.

Comprehensive guide to marine fuel injector testing and overhaul, covering nozzle and needle inspection, leakage, spray pattern, atomisation, opening behaviour, reassembly, bench testing and root-cause troubleshooting.

Fuel pump overhaul and calibration guide covering plunger/barrel condition, delivery valve, leakage, timing, output balance, and workshop testing.

Explanation of gas injection valve, fuel block injection valve, and main block injection valve functions in dual-fuel marine engine systems.

Technical overview of SOGAV valve function in gas engine systems, including inspection, response, leakage, contamination, and maintenance considerations.

Overview of marine dual-fuel gas admission systems, including gas valves, pilot fuel, interlocks, leakage checks, control systems, and troubleshooting principles.

How marine cylinder liners are inspected for wear, ovality, taper, scuffing, cracks, corrosion, cloverleaf wear, and honing suitability.

Technical guide to cylinder cover overhaul, including sealing surfaces, cracks, cooling passages, studs, valves, injectors, and pressure testing considerations.

Exhaust valve overhaul guide covering spindle, seat, cage, guide, actuator, air spring, leakage, burning, deposits, and testing.

Principles of marine workshop component reconditioning, including cleaning, measurement, NDT, repair decision-making, calibration, testing, documentation, and return-to-service checks.

Troubleshooting guide for ME-C hydraulic pressure problems, including oil condition, filters, pumps, leakage, accumulators, sensors, and control components.

Troubleshooting high exhaust gas temperature on marine diesel engines, including fuel injection, exhaust valve leakage, turbocharger, scavenge air, compression, and load distribution.

Technical diagnosis of low compression pressure in marine diesel engines, including piston rings, liner wear, exhaust valve leakage, cylinder cover sealing, and measurement checks.

Practical troubleshooting guide for marine main engine starting failure, including starting air, interlocks, control signals, turning gear, fuel admission, and safety systems.

Marine turbocharger surging explained, including dirty compressor/turbine, air cooler restriction, exhaust restriction, engine overload, scavenge problems, and corrective actions.

Causes of abnormal cylinder liner wear, including lubrication, fuel quality, abrasive particles, corrosion, piston ring condition, scuffing, and inspection planning.

Troubleshooting low lubricating oil pressure in marine engines, including oil level, pump condition, filters, cooler, viscosity, bearing leakage, relief valves, and instrumentation.

Marine engine vibration troubleshooting guide covering misfiring, cylinder imbalance, bearing condition, alignment, foundation, turbocharger, and rotating components.

Technical overview of scavenge fire causes, warning signs, immediate safety actions, inspection points, and prevention for two-stroke marine diesel engines.

Troubleshooting starting-air problems on auxiliary and generator engines, including air pressure, starting valves, control air, distributors, and safety interlocks.