Table of Contents
What is BSFC on dyno?
BSFC stands for Brake Specific Fuel Consumption. It tells you how much fuel your engine will use per hour for each horsepower it makes. BSFC changes with engine load and rpm.
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.
Why does BSFC decrease with engine speed?
The decrease in BSFC is due to the better physical and chemical properties of fuel which assisted in improving combustion at low engine speeds. On the other hand, at high speeds, the friction heat losses occur and combustion deteriorates which increases the BSFC.
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.
What is BSFC unit?
Commonly BSFC is expressed in units of grams per kilowatt-hour (g/(kW⋅h)).
What does BSFC measure?
BSFC is the measurement of efficiency of fuel by the engine that combusts the fuel air mixture and produces the rotational motion of the crankshaft. This is used for comparing the efficiency of the engine. BSFC is the ratio of the rate of fuel consumption and the effective power produced from the engine.
What affects BSFC?
One of the main parameters used to determine the characteristics of biodiesel on BSFC is calorific value. The higher the calorific value, the lower the BSFC because a reduction in the calorific value of a fuel results in a rise in the fuel consumption for attaining the corresponding power output.
What is BSFC Mcq?
What is a good BSFC?
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\%. An iso-BSFC map (fuel island plot) of a diesel engine is shown. The sweet spot at 206 BSFC has 40.6\% efficiency.
What is BSFC value?
BSFC is a measure of the fuel efficiency of any engine that burns fuel and produces rotational power output. The BSFC value indicates how efficiently the engine converts fuel supplied into useful work. One of the main parameters used to determine the characteristics of biodiesel on BSFC is calorific value.
Which is more efficient Otto or Diesel?
Explanation: Otto cycle is more efficient than Diesel cycle for a given compression ratio. For constant maximum pressure and heat input, the air standard efficiency of the gas power cycle is in the order.
How does the BSFC change as the thermal efficiency of the engine increases?
Rise in inlet air temperature results in increased BSFC ultimately decreasing the thermal efficiency. Full-load fuel conversion efficiency values were very close for all types of fuel used. Decrease in engine efficiency and negligible change in fuel conversion efficiency as compared to pure gasoline fuel.
What is the meaning of BSFC?
BSFC is the Brake Specific Fuel Consumption of an engine. It can be defined as the amount of fuel consumed by the engine to produce 1 KW of Brake Power. BSFC is Brake Specific Fuel Consumption.
What is the BSFC of a diesel engine?
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\%. An iso-BSFC map (fuel island plot) of a diesel engine is shown.
What is the difference between BSFC and brake power?
BSFC is the Brake Specific Fuel Consumption of an engine. It can be defined as the amount of fuel consumed by the engine to produce 1 KW of Brake Power. Brake Power is the amount of power output available at the crankshaft of an engine.
What is the efficiency of a 206 BSFC engine?
The sweet spot at 206 BSFC has 40.6\% efficiency. The x-axis is rpm; y-axis is BMEP in bar (bmep is proportional to torque ) BSFC numbers change a lot for different engine designs, and compression ratio and power rating.