MAN B&W L23/30H — tehniskā informācija

Četrtaktu palīgdīzeļdzinējs (ģeneratoragregāts)

Technical description chapters of the MAN B&W L23/30H auxiliary generating sets: engine data, cross section, systems (fuel, lube oil, cooling water, compressed air, turbocharging, control and safety), fuel, lube oil and cooling water quality and treatment, operation data and alarm/shutdown set points, tightening torques, pressures and tolerances, the planned maintenance programme, operating and out-of-service instructions, crankcase ignition, and troubleshooting tables for running disturbances, starting failures, the turbine starter, lube oil cooler, cooling water and the centrifugal by-pass filter.

Noklikšķiniet uz detaļas modelī, lai redzētu tās numuru un nozīmi.Atvērt 3D rokasgrāmatu

Tehniskās apkopes intervāli

Objekts	Kad	Darbība	Rokasgr.
Cylinder head nuts, conrod, counterweights, bearing caps, holding-down bolts	after 200 h on new/overhauled parts	Retighten	101. lpp.
Inlet/exhaust valves	8000 h	Overhaul and regrind spindle and seat	101. lpp.
Valve clearance	2000 h	Check and adjust	102. lpp.
Fuel injection valves	2000 h	Overhaul and adjust opening pressure	104. lpp.
Turbocharger	daily/weekly	Water washing of compressor and wet cleaning of turbine side	103. lpp.
Lube oil	every bunkering/analysis	Samples per section 504	104. lpp.
Main bearing alignment (autolog)	8000 h	Measure crankshaft deflection	102. lpp.
Piston, rings, liner	16 000 h	Inspect, hone and measure liner	101. lpp.

Bojājumi un ko darīt

Exhaust temperature rises on all cylindersCharge air cooler ineffective, fouled air/gas passages, poor fuel, wrong camshaft positionExhaust temperature rises on one cylinderDefective fuel valve, leaking exhaust valve, blow-by, damaged fuel camExhaust temperature drops on one cylinderAir in fuel pump, sticking fuel valve spindle, sticking pump plungerEngine rpm dropsLow fuel pressure, water in fuel, governor or valve faults, increased frictionSmoky exhaust in normal runningFouled turbocharger, defective nozzles, low air supplyExhaust valve knockingLoose adjusting screw, damaged push-rod discLube oil pressure failsPump defective, filters or cooler fouledEngine does not turn on startLow air pressure, main valve closed, pinion not engaging, start valve stuck, electrical fault

Tehniskie parametri

Valve clearance (cold 15–55 °C)	inlet 0.50 mm, exhaust 0.90 mm	33. lpp.
Fuel valve opening pressure	320 bar	33. lpp.
Max. combustion pressure at full load	130 bar; max. 6 bar difference between cylinders	33. lpp.
Pmax adjustment	0.10 mm thrust-piece spacer ≈ 1 bar; 1° camshaft gear ≈ 3 bar	33. lpp.
Big-end bearing clearance	0.15–0.20 mm	33. lpp.
Main bearing clearance	0.2–0.3 mm	33. lpp.
Cylinder liner	new 225.000–225.046 mm, max 225.50 mm, ovality max 0.1 mm	33. lpp.
Crankshaft deflection (autolog)	see working card 510-01.00	33. lpp.
Cylinder head nuts	M45, 750 Nm (Copaslip); studs M48 200 Nm	34. lpp.
Main bearing nuts / side screws	M45 × 3 750 Nm / M24 300 Nm	34. lpp.
Counterweight screws	M30 × 2, 200 Nm + 60°	34. lpp.
Fuel valve nozzle nut	M26 × 1.5, 100–120 Nm	34. lpp.
Lube oil inlet pressure	3–4 bar (SAE 30) at full load; alarm 2.5 bar, shutdown below	94. lpp.
Lube oil temperature	after cooler 45–60 °C; alarm TAH, shutdown 85/95 °C	94. lpp.
HT cooling water	outlet 70–85 °C; alarm 90 °C, shutdown 95 °C	94. lpp.
Exhaust gas	before TC 425–475 °C; outlet cylinders average ±50 °C alarm	94. lpp.
Charge air	2–2.5 bar, 35–55 °C after cooler	94. lpp.
Starting air	7–9 bar, alarm below 7 bar	94. lpp.
Overspeed (750 rpm engine)	alarm 825, shutdown 815 (el.) / 860 rpm (mech.)	94. lpp.

Avots: ražotāja rokasgrāmata “MAN L23-30H technical information”, 126 lpp. Lappušu numuri atbilst oriģinālam. Pirms darba pārbaudiet rokasgrāmatu uz kuģa.

Lappuse tulkota automātiski. Detaļu numuri, kodi un lappuses ir kā oriģinālā.