Two-Stroke Main Engine
AssemblyA six- to seven-cylinder slow-speed two-stroke crosshead diesel of around 80-90 cm bore delivering ~25-30 MW directly to the propeller at low rpm. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Two-Stroke Main Engine parts and their functions
9 top-level parts · 1,124 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Bedplate | 1× | Welded base structure carrying the main bearings, chocked to the engine seating. |
| 2 | Crankshaft | 1× | Semi-built crankshaft of forged throws shrunk onto journals, carrying full engine power to the shaft line. |
| 3 | Cylinder Assembly 8 parts | 7× | One per cylinder |
| 4 | Crosshead | 7× | One per cylinder |
| 5 | Turbocharger | 2× | Exhaust-gas turbochargers |
| 6 | Main Bearing | 8× | White-metal main bearings |
| 7 | Scavenge Air System 4 parts | 1× | Scavenge receiver, coolers and blowers |
| 8 | Fuel Injection System 5 parts | 1× | Heavy-fuel injection supply |
| 9 | Lubrication System 5 parts | 1× | System and cylinder lubrication |
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Bill of materials for Two-Stroke Main Engine
9 top-level lines · 31 rows shown · 1,124 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Bedplate | oil-tanker-ship-bedplate | 1× | 1 | · | part |
| 2 | Crankshaft | oil-tanker-ship-crankshaft | 1× | 1 | · | part |
| 3 | Cylinder Assembly 8 parts | oil-tanker-ship-cylinder-assembly | 7× | 7 | 126 | assembly |
| 3.1 | Piston | oil-tanker-ship-piston | 1× | 7 | · | part |
| 3.2 | Piston Rod | oil-tanker-ship-piston-rod | 1× | 7 | · | part |
| 3.3 | Cylinder Liner | oil-tanker-ship-cyl-liner | 1× | 7 | · | part |
| 3.4 | Cylinder Cover | oil-tanker-ship-cyl-cover | 1× | 7 | · | part |
| 3.5 | Exhaust Valve | oil-tanker-ship-exhaust-valve | 1× | 7 | · | part |
| 3.6 | Fuel Injection Valve | oil-tanker-ship-fuel-injector | 3× | 21 | · | part |
| 3.7 | O-Ring Set | oring-set | 8× | 56 | · | part |
| 3.8 | Fastener Set | fastener-set | 110× | 770 | · | part |
| 4 | Crosshead | oil-tanker-ship-crosshead | 7× | 7 | · | part |
| 5 | Turbocharger | oil-tanker-ship-turbocharger | 2× | 2 | · | part |
| 6 | Main Bearing | oil-tanker-ship-main-bearing | 8× | 8 | · | part |
| 7 | Scavenge Air System 4 parts | oil-tanker-ship-scavenge-system | 1× | 1 | 68 | assembly |
| 7.1 | Scavenge Air Cooler | oil-tanker-ship-scavenge-cooler | 2× | 2 | · | part |
| 7.2 | Auxiliary Blower | oil-tanker-ship-aux-blower | 2× | 2 | · | part |
| 7.3 | Pressure Sensor | pressure-sensor | 4× | 4 | · | part |
| 7.4 | Fastener Set | fastener-set | 60× | 60 | · | part |
| 8 | Fuel Injection System 5 parts | oil-tanker-ship-fuel-system | 1× | 1 | 97 | assembly |
| 8.1 | Fuel Injection Pump | oil-tanker-ship-fuel-pump | 7× | 7 | · | part |
| 8.2 | Fuel Filter | oil-tanker-ship-fuel-filter | 2× | 2 | · | part |
| 8.3 | Coolant Pump | coolant-pump | 2× | 2 | · | part |
| 8.4 | Pressure Sensor | pressure-sensor | 6× | 6 | · | part |
| 8.5 | Fastener Set | fastener-set | 80× | 80 | · | part |
| 9 | Lubrication System 5 parts | oil-tanker-ship-lube-system | 1× | 1 | 58 | assembly |
| 9.1 | Lube-Oil Pump | oil-tanker-ship-lo-pump | 2× | 2 | · | part |
| 9.2 | Lube-Oil Cooler | oil-tanker-ship-lo-cooler | 1× | 1 | · | part |
| 9.3 | Cylinder Lubricator | oil-tanker-ship-cylinder-lubricator | 7× | 7 | · | part |
| 9.4 | Oil Seal | oil-seal | 8× | 8 | · | part |
| 9.5 | Fastener Set | fastener-set | 40× | 40 | · | part |
Where the two-stroke main engine is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $500–$50k. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| weichai.com ↗ | Weifang, CN | Diesel & power engines | 50 units | 12–16 wks |
| cumminsindia.com ↗ | Pune, IN | Diesel engines | 50 units | 12–16 wks |
|
🇨🇳Yuchai
yuchai.com ↗
|
Yulin, CN | Diesel engines | 50 units | 12–16 wks |
| koel.co.in ↗ | Pune, IN | Diesel & gas engines | 50 units | 12–16 wks |
| ashokleyland.com ↗ | Chennai, IN | Engines & commercial vehicles | 50 units | 12–16 wks |