TOR: The Next-Generation Turbocharger
Following the introduction of the TCA axial turbocharger two years ago, MAN B&W Diesel Group announced an expansion of the range to include a completely new radial turbocharger. The TCR turbocharger will replace the current NR series that has been in production for nearly 50 years culminating in the current NR/S design. The new TCR series has a compressor pressure ratio of 4.7; but capable of up to 5.2 when built as a special version. Aimed specifically at the medium and high-speed diesel and gas markets, six different models are able to cover a wide range of outputs from 400 to almost 6,000 kW.
The TCA and TCR are the first MAN B&W Diesel turbochargers to be completely designed using a 3D-CAD system, a move which simplified and reduced development work by integrating innovative software tools during the CFD (flow) and FEA (strength) analysis.
With regard to the rotor support, the MAN B&W engineers came up with something special: The axial bearing was located between the two radial bearings which permitted minimization of the bearing space requirements. The sealing system was also designed to be as compact as possible and without any additional sealing air requirement. The piston ring gasket, combined with a labyrinth seal, was thoroughly tested and proved to provide optimum sealing capacity both in operation and at standstill.
Flow calculations played a major part in the development of the new turbine in order to create a shape with high efficiency on the one hand and a wide application range on the other.
Consequently the new turbine is designed to provide optimum values in part load and full load operation and the manufacturer reports that it is equally suitable for constant and pulse pressure turbocharging. Development work also concentrated on the noise level by the introduction of a completely new intake silencer, which reduces the turbocharger noise.
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Other stories from September 2004 issue
Content
- SSI Concerns Continue page: 5
- Signed Confessions page: 9
- OMI to Pay $4.2M for Waste Oil Dumping page: 14
- NASSCO Delivers Alaskan Frontier page: 17
- Alabama Shipyard to Build Hopper Dredge page: 17
- Merwede Tapped for Navy, Commercial Contracts page: 18
- FBM Babcock Wins U.S. Contract page: 19
- New Vessels from VT Halmatic page: 19
- ABCO Launches Three New Boats page: 20
- IR Generates $64M in Orders page: 24
- Sideways to Swimmers: Unusual Tank Testing page: 26
- Current Uses of FEA in Shipbuilding page: 30
- BMT Aims to Improve Vessel Evac page: 32
- Flensburg Makes its Mark Again page: 36
- SMM 2004: Ready for the World page: 36
- German Shipyards Propose Merger page: 37
- Voith to Exhibit VWT Baut at SIMM page: 37
- Blohm + Voss Repair Wins Business page: 38
- Methane Arctic Benefits from German Technology page: 39
- Becker Kort Rudder Nozzles for Improved Maneuverability page: 40
- Payer Presented Cross of the Order of Merit page: 42
- Xantic: Focus on Integrated Solutions page: 44
- A Benchmark in Electronic Fuel Injection page: 45
- Q&A with Wartsila CTO Matti Kleimola page: 46
- Seacor Crewboats "Eliminators" Some Maintenance Costs page: 49
- (Fuel) Cells of Endeavor page: 50
- Containerships: When Will One Engine Not Be Enough? page: 52
- Most Powerful Common- Rail Engine Passes Test page: 54
- Clean Concept for Brostrom Tankers page: 54
- Canadian Towing Firm Refits for the Future page: 56
- TOR: The Next-Generation Turbocharger page: 57
- Duramax Marine Creates Largest Ever DuraCooler page: 58
- ABS: Large Ship Hull Deflections Impact the Shaft Alignment page: 60
- The Great Maritime Disruption... that Never Happened page: 66
- New Positioning Technique Helps Cut Costs in Deepwater GOM page: 76
- U.S. Ferry Market Prospects Looking Up page: 77
- "Ship Design and Construction" page: 81
