How is BHP of marine diesel engine calculated?

BHP is measured by applying a resistance torque as a brake on the Shaft . … A ) BHP = (2πnT ) /33000 ,2πnT = Power in lb-ft per min. n =no. of revolution per minute of the engine , T = Torque applied on shaft.

How is marine diesel engine power calculated?

How to calculate power of Main Engine (2 stroke engine)?

  1. Power card or PV diagram can be used to measure indicated power in diesel engines. …
  2. Calculations.
  3. Work done in one cycle = Mean Indicated Pressure x Area of the Piston x Length of stroke = [Pm] x [A] x [L]
  4. Indicated Power of Unit = Pm L A N.


What is BHP in marine engine?

Brake Horse Power: Brake Horsepower measures the HP of an engine without considering the loss in power that is caused by auxiliaries attached to the engine, such as the shaft generator, alternator, gearbox, and other auxiliary parts.

How is BHP calculated?

BHP = Q × P / (1714 × n)

*Many positive displacement pumps are assumed to operate at 90% efficiency. A value of 0.9 is often used for this calculation.

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How do you calculate the specific fuel consumption of a marine diesel engine?

SFOC (g/kwh) = Mass of fuel consumed per hour / Power developed in KW

  1. The readings of the flow meter to the main engine should be noted over the specified time interval say 1 hour. …
  2. The mass of the observed volume of fuel consumed can be determined by following the above-said bunker calculation procedure.


What is peak pressure in marine diesel engine?

The MSI Series of Peak Pressure Indicators measure the maximum compression or combustion pressure (Pmax) on single cylinder at two- or four-stroke engines. This peak pressure gauge can be used on internal combustion engines and compressors. In this case, pressures of up to 300 bar can be measured.

How is main engine BHP calculated?

Calculating Brake horsepower

  1. BHP = (Torque × RPM )/5252,where torque is lb -ft and n = revolution per min.
  2. BHP = BP /33000,where BP (in watt ) = Torque×2π×RPM (RPM in min. ) Where torque in the formula of BP is in lb -ft.
  3. BHP =BP (in Watt ) / 746 we get it in horse power ,since 1 HP = 746 watt.


Who makes the best marine diesel engine?

Here is our list of some of the best marine diesel engines from top manufacturers.

  • Caterpillar C8. …
  • Caterpillar C12.9 Marine Diesel Engine.
  • Caterpillar C18 Marine Diesel Engine.
  • Caterpillar C32 Marine Diesel Engine.
  • Cummins QSB 6.7 Marine Diesel Engine.
  • Cummins QSC 8.3 Marine Diesel Engine.
  • Cummins QSL 9 Marine Diesel Engine.


What is main engine MCR?

The maximum continuous rated power output as specified on the nameplate and in the Technical File of the marine diesel engine.

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What is MCR speed?

MCR is maximum continuous rating and is used for describing the specific fuel consumption or the daily fuel consumption when the ship is cruising at maximum speed. For the propulsion engine the speed and engine load are same or corresponding and hence these ratings. The ship is always operating at service speed.

How many HP is RPM?

In other words, power is the rate of completing work (or applying torque) in a given amount of time. Mathematically, horsepower equals torque multiplied by rpm. H = T x rpm/5252, where H is horsepower, T is pound-feet, rpm is how fast the engine is spinning, and 5252 is a constant that makes the units jibe.

What is the value of 1 BHP?

The electrical equivalent of one horsepower is 746 watts in the International System of Units (SI), and the heat equivalent is 2,545 BTU (British Thermal Units) per hour. Another unit of power is the metric horsepower, which equals 4,500 kilogram-metres per minute (32,549 foot-pounds per minute), or 0.9863 horsepower.

What horsepower is 5252?

One horsepower is equal to 33,000 foot-pounds of work per minute. Add in the equations relating to torque and velocity, and you’ll find that horsepower always equals torque multiplied by rpm, divided by 5,252. Canceling out the equal variables, you wind up with horsepower equaling torque… at 5,252 rpm.

How do you calculate fuel consumption of a diesel engine per hour?

Simple Method

  1. Formula To Estimate Maximum Engine Fuel Consumption. Gallon Per Hour (GPH) = (specific fuel consumption x HP)/Fuel Specific Weight. …
  2. 300-hp Diesel Engine Example. GPH = (0.4 x 300)/ 7.2 = 105/7.2 = 16.6 GPH.
  3. 300-hp Gasoline Engine Example. GPH = (0.50 x 300)/ 6.1 = 150/6.1 = 24.5 GPH.
  4. Other Related Resources:
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How much fuel does a diesel engine burn per hour?

Likewise, a well-maintained diesel engine burns about 0.4 pounds of fuel per hour for each unit of horsepower it produces.

What is the formula for fuel consumption?

Divide mileage by fuel usage to see your car’s fuel consumption. This tells you how many miles you drove per gallon of gas. For example, if you drove 335 miles before refueling, and you filled your car up with 12 gallons of gas, your fuel consumption was 27.9 miles per gallon, or mpg (335 miles / 12 gallon = 27.9 mpg).