Please Choose Your Language
Please Choose Your Language
| Quantity: | |
|---|---|
Marine Diesel Engine Turbocharger is a key engine component used to increase the air intake volume of the combustion chamber. It uses exhaust gas energy to drive the turbine and compressor, helping improve combustion efficiency, engine power, and overall performance.
With reliable efficiency and durable resistance to high temperature, pressure, and continuous operation, this turbocharger is suitable for marine engine maintenance, overhaul, and replacement applications. It helps improve engine response, reduce fuel consumption, and support stable operation under demanding working conditions.
NA70 turbochargers serve as the core supercharging unit for large-bore marine diesel engines. Utilizing high-temperature exhaust gas energy from the engine, the turbine drives the compressor rotor to operate at ultra-high speed. It efficiently compresses ambient intake air, increases air density and delivers stable high boost pressure. The integrated flow design of the NA70 unit directly determines engine air intake volume, combustion efficiency and overall power output of the marine propulsion system.
Consistent and sufficient supercharging pressure ensures uniform air-fuel mixing inside engine cylinders. The precisely calibrated flow passage and rotor matching of NA70 turbochargers maintain stable supercharging efficiency across full engine load ranges. It effectively reduces exhaust emissions and specific fuel consumption, sustaining rated power output and reliable combustion performance during long-term continuous ocean voyages and variable load operation.
NA70 turbocharger adopts dual mature material configurations for marine working conditions. The integral housing is made of high-strength precision cast alloy, featuring strong structural rigidity and deformation resistance, suitable for long-duration steady-load navigation. Core rotating parts and turbine components are manufactured from high-temperature corrosion-resistant superalloy, adapting to harsh marine environments with high salt fog, humid air and high-temperature exhaust erosion.
All core components of the NA70 turbocharger undergo 5-axis CNC finish machining and dynamic balance calibration. Key assembly and running tolerances are strictly controlled within 0.008 mm, and all processing and assembly standards fully comply with MAN B&W original OEM drawings. High-precision manufacturing ensures perfect matching of rotor clearance, flow passage smoothness and sealing tightness for the complete turbocharger unit.
MAN B&W | NR15,NR20,NR26,NA40,NA48,NA57,NA70 |
IHI | RH133,RH143,RH163,RH183,RH203,RH223,RH253,RH1022,RH1221,RU110,RU120,RU203Y |
MHI | MET33SB,MET42SB,MET53SB,MET66SC,MET71SC,MET83SC,MET30,MET33,MET42,MET53,MET66,MET71 |
ABB | VTR160,VTR161,VTR200,VTR201,VTR214,VTR250,VTR251,VTR254,VTR304,VTR320,VTR321,VTR354, VTR400,VTR401,VTR454,VTR500,VTR501,VTR564,VTR714 |
TPS44,TPS48,TPS50,TPS52,TPS57,TPS61,TPL65,TPL69,TPL73,TPL77,RR131,RR151,RR181,RR221 |
Alongside NA70 complete turbochargers, complementary components for the same turbocharger series are available, including turbine wheels, compressor impellers, nozzle rings, compressor diffusers, bearing bushes, thrust bearings, floating bearings, shaft seal rings, rotor shafts, bearing housings, wastegate valves, gas outlet flanges, seal bushes, insert pieces, turbine shafts, repair kits, cartridges, turbine casings, and slide bearings.
Each finished NA70 turbocharger undergoes ultrasonic flaw detection, dynamic balance testing, dimensional verification, and surface finish inspection. Full performance test and tightness test are completed before delivery. Inspection records are archived per unit and can be provided to enterprise customers upon request.
NA70 marine turbochargers are supplied with CCS Type Approval documentation where required. These documents support vessel classification surveys and dry-docking audits for ship owners and marine service companies operating under international maritime regulations.
NA70 turbochargers are core supporting equipment for large marine main propulsion diesel engines. Long-term high-load operation may cause rotor wear, flow passage fouling, efficiency attenuation and structural aging, resulting in insufficient boost pressure and increased fuel consumption. Replacement of qualified NA70 turbochargers restores the engine supercharging system to original design specifications and rated power performance.
NA70 turbocharger units are also applicable to high-power marine auxiliary generator engines operating in dusty port environments or coastal routes with high airborne salt content. Scheduled replacement and overhaul ensure stable supercharging performance and uninterrupted auxiliary power supply during port stays and at-sea operations.
Which turbocharger brands and models are compatible with this NA70 unit?
This NA70 turbocharger is specially designed for MAN B&W marine diesel engines and matches the NA series turbocharger system. Customers can confirm exact compatibility by providing equipment model and part number from the manual.
Are CCS certification documents available with each order?
CCS Type Approval certificates can be provided for applicable model ranges. Please specify certification requirements at the time of inquiry so that the correct documentation set is prepared before shipment.
What is the typical lead time for NA70 turbocharger orders?
Standard NA70 turbocharger units are held in stock and can be dispatched within 7 to 10 working days after order confirmation. Custom-tuned and overhauled variants require additional production and testing time based on technical requirements.
Can NA70 turbochargers be manufactured or customized per customer requirements?
Yes, NA70 turbochargers can be produced and calibrated according to customer technical drawings or actual equipment operating demands. Technical validation and performance parameter confirmation are completed before production to ensure dimensional and functional matching.
