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What is the fuel consumption rate of a diesel engine?
April 20, 2022
Diesel engine is actually a power machine that converts the chemical energy of fuel into mechanical energy and outputs power to the outside world. Industry plays an important role.
Diesel engine is an internal combustion engine that uses diesel as fuel, which belongs to compression ignition internal combustion engine. When the diesel engine is working, the air sucked into the cylinder is compressed to a high degree due to the movement of the piston. When the compression ends, the high temperature in the cylinder can reach 500~700℃ and the high pressure of 3.0~5.0MPa, and then the fuel is misted. The form is sprayed into the high-temperature air, and mixed with the high-temperature air to form a combustible aiki, which automatically ignites and burns. The energy released during combustion (maximum explosion pressure exceeding 10.0MPa) acts on the top surface of the piston, pushes the piston and converts it into rotating mechanical work through the connecting rod and crankshaft, and then outputs power to the outside. So what is the fuel consumption rate of a diesel engine?
The fuel consumption rate of a diesel engine is an important indicator reflecting the economic performance of a diesel engine. It refers to the amount of fuel consumed per kilowatt of power per unit time, and is a relative index measured and calculated in the laboratory. On the diesel engine test bench, by measuring the power of the diesel engine and the fuel consumption per unit time, the fuel consumption rate of the diesel engine can be calculated, which is represented by the letter ge, and the unit is g/kW·h.
1. Calculation formula: ge=(103×G1)/Ne
In the formula, ge is the fuel consumption rate (g/kW h); G is the fuel consumption of lh (kg); Ne is the power (kW). The fuel consumption rate of a diesel engine is a relative indicator. Under the same conditions, the lower the fuel consumption rate, the better the economic performance of the diesel engine and the more fuel-efficient.
2. 100km fuel consumption (L/100km): In actual use, the general method to measure whether the diesel engine is fuel-efficient is to look at the fuel consumption of the car every 100km. 100km fuel consumption can only be obtained through actual use.
100km fuel consumption (L/100km) = the actual fuel consumption of the vehicle (L) / the distance traveled by the vehicle (km). The actual fuel consumption is related to the vehicle's operating conditions, deadweight tonnage, driving habits, etc. Under the same driving conditions, the lower the fuel consumption of 100km, the more fuel-efficient the diesel engine is.
3. Hourly fuel consumption: For agricultural diesel engines, construction machinery diesel engines, etc., the fuel consumption of the diesel engine can also be expressed by the weight of the fuel consumed by the diesel engine within 1 h, which is called the hourly fuel consumption, and the unit is kg/h. Due to the different power of diesel engines, the fuel consumption per hour or per lOOkm is also different, so the fuel economy of different diesel engines cannot be measured by fuel consumption.
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