What is consumption map?
What is consumption map?
A consumption map or efficiency map shows the brake-specific fuel consumption in g per kWh over mean effective pressure per rotational speed of an internal combustion engine.
How do you calculate the specific fuel consumption of a diesel engine?
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.
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What is fuel consumption of diesel engine?
Diesel engines generally achieve greater fuel efficiency than petrol (gasoline) engines. Passenger car diesel engines have energy efficiency of up to 41% but more typically 30%, and petrol engines of up to 37.3%, but more typically 20%. A common margin is 25% more miles per gallon for an efficient turbodiesel.
What is engine performance map?
Performance maps are a common method used to convey engine performance information within the operating limits of each respective engine. Typical performance maps express fuel efficiency in brake specific fuel consumption (BSFC).
What is SFC G kWh?
Specific fuel consumption SFC (g/kWh) of the ICE as a function of engine rotational speed and engine torque. For confidentiality reasons, the data are normalized.
How do you calculate fuel consumption in km L?
To work out how many kilometres your car drives on one litre of fuel simply divide the total distance travelled by the total litres of fuel used. Example: 400 km / 42 litres = 9.5 km’s per litre.
What is the formula for specific fuel consumption?
It is the rate of fuel consumption divided by the power produced. In traditional units, it measures fuel consumption in pounds per hour divided by the brake horsepower, lb/(hp⋅h); in SI units, this corresponds to the inverse of the units of specific energy, kg/J = s2/m2.
What is the average fuel consumption?
The average fuel economy for new 2020 model year cars, light trucks and SUVs in the United States was 25.4 miles per US gallon (9.3 L/100 km).
Why an engine map is important?
of tests on the engine and the program for these tests is called engine mapping. These tests determine the performance and investigate the effects of each variable that has some bearing on the output of the engine.
How is SFC calculated?
The units of this efficiency factor are mass per time divided by force (in English units, pounds mass per hour per pound; in metric units, kilograms per hour per Newton).
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.