SHAFT POWER METERS
Binsfeld Engineering is proud to be a market-leader in the marine market, offering user-friendly and easily integrated torque and power measurement solutions. Whether our customers want to monitor vessel performance, diagnose the root cause of repeated component failures, or increase fuel efficiency, Binsfeld shaft power meters provide the data needed to get the job done.
- Reduce downtime by knowing when engine, propeller, gearbox, or bearing performance is degrading
- Initiate preventative maintenance or replace worn components only when needed
- Diagnose propulsion problems
- Figure out why hull efficiency has degraded (hull-fouling)
- Determine the root cause of an excessive torsional vibration on a propeller shaft
OPTIMIZE FUEL EFFICIENCY & REDUCE EMISSIONS
- Combine mechanical horsepower measurement with vessel speed and fuel consumption sensors to monitor fuel consumption and increase fuel efficiency
- Meet emissions requirements by optimizing fuel efficiency
MARINE PRODUCTS & SERVICES
EDISON CHOUEST OFFSHORE
CANADIAN COAST GUARD
ADDITIONAL MARINE CASE STUDIES
BACKGROUND With increased emissions regulations and rising fuel costs, vessel owners are constantly looking for ways to reduce fuel consumption of their fleet and tugboats are no exception. In a typical tug operation, there are 2 basic modes of operation: in-transit...
THE CLIENTThe S.S. Badger is a passenger and vehicle ferry that has been in service since 1953. Currently, she shuttles across Lake Michigan between Manitowoc, Wisconsin and Ludington, Michigan. What makes her unique is this: she is the very last coal-burning...
THE CLIENTFounded in 1982, MACSEA has acquired decades of experience in providing ship performance monitoring solutions to both Naval and commercial shipowners. MACSEA was the first company to unleash the power of neural network-based software agents for real-time...
Hagen Andersen, DNV (USA) Inc., uses the TorqueTrak 10K telemetry instrument from Binsfeld Engineering to perform true mechanical Torque & Power measurements on marine propeller shafts. Shown below is a recent case study. DNV was contracted by a United States ship...
CENTA Transmissions Far East Pte. Ltd. used the TorqueTrak 10K telemetry instruments from Binsfeld Engineering to diagnose and solve a problem aboard a twin-propeller ship, where the couplings on both shafts repeatedly suffered damage after only a couple hours of sea...
When power is money, using Binsfeld TorqueTrak TT10K torque meters can assist engine manufacturers to set maximum power output. A tug barge owner, operating in Alaska, had to re-fit his tug propulsion system in order to comply with environmental regulation. In his...
MARINE TECHNICAL TOPICS
WHAT IS A MARINE SHAFT POWER METER?
A marine shaft power meter measures the real time torque (torsion), speed, and power of a marine shaft. The meter uses a strain gage to measure torque and a tachometer to measure shaft speed. Power is calculated by combining these two inputs (shaft speed and torque) into a simple equation.
WHAT IS ENGINE THRUST AND HOW IS IT MEASURED?
Engine thrust is the axial force exerted by an engine. This is realized as compression on the shaft. The most common way thrust is measured in the marine industry is through the Bollard Pull test. In this test, a boat is tethered to a post, and the engines are brought up to maximum power. A force/tension gage is used in-line with a rope to determine what the maximum Bollard Pull rating (or maximum towing weight) is.
The Bollard Pull test measures the cumulative pull force of all the propellers on a ship. If the thrust value for each of the ships individual engines is desired, then the thrust on each shaft can be measured by using a thrust pattern strain gage. Careful consideration for accuracy should be taken when using this method. Since the compressive displacement of a shaft is much lower than torsional displacement, the strain gage method is not as accurate (typically +/- 10%). An added advantage to using a shaft power meter during Bollard Pull Testing is that the true mechanical horsepower of the engine can be monitored, which can help identify if one engine is underperforming or help root-cause/prevent a failed Bollard Pull test.
WHAT IS HULL FOULING?
Hull fouling is defined as the buildup of organisms (plants, algae, barnacles, etc) on an engine hull. The buildup of these organisms causes the vessel to lose fuel efficiency (due to increased drag on the hull), can lead to the transfer of invasive species, and promotes corrosive damage on the hull. Hull fouling can be discovered by visual inspection or through the use of a shaft power meter. By comparing the output power to a calibrated baseline, ship performance monitoring can help identify if excessive drag is prevalent, which could indicate hull fouling.
BINSFELD ENGINEERING INC.
Binsfeld's Torque Measurement Systems measure true mechanical torque and power on rotating shafts. We also offer consultation, strain gaging and installation services.
Binsfeld's Rotary Temperature Transmitter Systems provide accurate and reliable temperature control on heated godets and calendars. We also offer design and OEM services.
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