Marine Propulsion & Diesel Engines

Engine Basics & CyclesEngine fundamentals first: Otto, Diesel and dual cycles, engine terminology, and two-stroke vs four-stroke differences — the base every Motor answer builds on.4 lessons Two-Stroke ConstructionInside the big two-stroke: engine structure, crankshaft types, main/guide/thrust bearings, chain drive and charge-air coolers — with inspection and failure points.10 lessons Two-Stroke Construction & Scavenging1 lessons Fuel Injection & Governing1 lessons Fuel Injection & Atomisation1 lessons Electronic ControlCamless marine diesel engines: MAN ME and Sulzer RT-flex hydraulic power supply, servo-oil actuation, electronic fuel injection (ELFI) and electronic exhaust valves (ELVA).1 lessons Four-Stroke EnginesAuxiliary four-stroke engines: layout, cylinder-head valves, fuel injection, trunk-piston lubrication and the checks that keep them running.1 lessons Gas TurbinesRotating power without pistons: gas-turbine working, performance, steam-vs-gas comparison and the auxiliaries that support them.1 lessons Performance & IndicationProving the engine makes its power: indicator cards, mean effective pressure, efficiencies and the running adjustments that fix them.1 lessons Engine OperationStarting, reversing, manoeuvring and stopping: two-stroke and four-stroke operation with the alarms and interlocks that guard each step.5 lessons Lubrication & Fuel SystemsOil and fuel readiness: lube-oil system and purification plus fuel preparation and changeover — the systems behind every reliable running hour.1 lessons Safety & TroublesWhen engines misbehave: protections, performance curves, starting and running faults, and the emergencies — with causes and actions.5 lessons Engine Control & Automation2 lessons Governor & ScavengingSpeed control and breathing: governors, pulse vs constant-pressure turbocharging, surging and the washing routines that restore air flow.1 lessons Cylinder LubricationMarine crosshead engine cylinder lubrication: mechanical lubricators vs electronic timed injection, MAN B&W Alpha Lubricator, WinGD Pulse Lubricating System (PLS) & Swirl Injection Principle (SIP), feed rate optimization (ACC), and BN selection.1 lessons Engine Dynamics & VibrationMarine propulsion shaftline and engine dynamics: torsional, axial and transverse vibrations, nodal resonance frequencies, barred speed range, viscous and Geislinger tuned spring dampers, hydraulic axial detuners, and top bracing.1 lessons Dual-Fuel TechnologyModern two-stroke dual-fuel engines: MAN ME-GI high-pressure Diesel cycle vs WinGD X-DF low-pressure Otto cycle, pilot fuel ignition, methane slip reduction (iCER/EGR), Gas Valve Units (GVU), double-wall piping, and IGF Code safety.1 lessons Fuel InjectionHow fuel gets injected at the right moment: valve-controlled and helix fuel pumps, mechanical and electronic VIT, and injection timing.1 lessons