Table of Contents
What is a good brake specific fuel consumption?
Actual efficiency can be lower or higher than the engine’s average due to varying operating conditions. In the case of a production gasoline engine, the most efficient BSFC is approximately 225 g/(kW⋅h), which is equivalent to a thermodynamic efficiency of 36\%.
What is BSFC and ISFC?
Brake-specific fuel consumption (bsfc) and indicated specific fuel consumption (isfc) is the specific fuel consumption on the basis of brake power (bp) and indicated power (IP) respectively.
How do you calculate BSFC mpg?
To calculate Fuel Consumption for a 400 hp Gas engine with a BSFC of .50 lbs/hp/hr:
- 400 hp x .50 = 200 lbs/hr.
- 200 lbs/hr / 6.25 lbs/gal = 32 gph.
- 400 hp x .0800 = 32 gph.
- 800 hp x .70 = 560 lbs/hr 560 lbs/hr / 6.59 lbs/gal = 84.98 gph.
- 800 * .106 = 84.80 gph.
At what value of air fuel ratio is the brake specific fuel consumption?
It is easy to perceive from the figure that there is an optimum minimum value of BSFC occurred within a range of AFR from 38.144 (φ =0.9) to 49.0428 (φ =0.7) for the selected range of speed. At very lean conditions, higher fuel consumption can be noticed.
What is SFC in diesel engine?
We then define specific fuel consumption (SFC) as the quantity of fuel burned in unit time required to produce a given engine output. SFC is a technical figure of merit that indicates how efficiently the engine converts fuel into power.
What is ISFC in engine?
Brake specific fuel consumption (bsfc) and indicated specific fuel consumption (isfc) is the specific fuel consumptions on the basis of brake power (bp) and indicated power (ip). The specific fuel consumption per kW-hr for a diesel engines is very close to 0.27 kg / kW-hr.
Is high BSFC good?
BSFC stands for Brake Specific Fuel Consumption. It tells you how much fuel your engine will use per hour for each horsepower it makes. A lower BSFC value is MORE efficient. Higher BSFC numbers are LESS efficient.
How do I find specific fuel consumption?
Simple Method
- Formula To Estimate Maximum Engine Fuel Consumption. Gallon Per Hour (GPH) = (specific fuel consumption x HP)/Fuel Specific Weight.
- 300-hp Diesel Engine Example. GPH = (0.4 x 300)/ 7.2 = 105/7.2 = 16.6 GPH.
- 300-hp Gasoline Engine Example. GPH = (0.50 x 300)/ 6.1 = 150/6.1 = 24.5 GPH.
- Other Related Resources:
What is SFC in tractor?
[spə′sif·ik ′fyül kən‚səm·shən] (mechanical engineering) The weight flow rate of fuel required to produce a unit of power or thrust, for example, pounds per horsepower-hour. Abbreviated SFC.
How do you calculate brake specific emissions?
To determine brake-specific emissions for a test interval as described in paragraph (b)(3) of this section, calculate a value proportional to the total mass of each emission. Divide each proportional value by a value that is similarly proportional to total work.
How do you calculate fuel consumption?
Fuel consumption figures for excavators are usually expressed as gallons per hour. To calculate the fuel consumption, simply divide the number of gallons of diesel required to fill the excavator’s fuel tank by the number of hours that the machine has worked.
What is BP fuel?
Restore Fuel Economy. BP gasoline with Invigorate ® is like hundreds of scrubbing brushes inside your engine helping to clean and restore the miles lost due to dirt from ordinary fuel. Ordinary Fuel refers to minimum detergency gasoline. Dirt refers to deposits on critical engine parts. Requires continuous use over 5000 miles.
What does specific fuel consumption mean?
Specific fuel consumption is the amount of fuel consumed by a vehicle for each unit of power output. A vehicle’s specific fuel consumption is more or less independent from its nitrogen oxide emissions per kilometer. The specific fuel consumption of an engine is the rate of fuel burnt to produce a unit of thrust.
What is brake oil?
Brake fluid is a non-compressible substance that lies within the brake lines, delivering the force created by your push on the brake pedal to each of the brake rotors on the four corners of your vehicle.