I.Core answer
The fuel consumption of Huaquan diesel generator sets does not have a fixed value, primarily depending on two core factors: the power output of the unit i the load rate. Fuel consumption is typically measured in units of litara na sat (L/h) ili grams per kilowatt-hour (g/kW·h).
The full series of Huaquan power diesel generator sets have undergone energy-saving technology optimization, resulting in fuel consumption rates and lubricating oil consumption rates that are significantly better than similar domestic products. They exhibit excellent overload capacity at no-load rated voltage.
Taking Huaquan’s different power units as an example, the hourly fuel consumption during full-load operation is as follows:
| unit power | fuel consumption rate | Estimated fuel consumption per hour at full load | Applicable scenarios |
| 30kW | ≤258.4g/kW·h | About 6-8 litara | Household backup, small shop |
| 50kW | ≤231g/kW·h | About 10-14 litara | Medium-sized construction site, school |
| 100kW | ≤231g/kW·h | About 20-26 litara | Large factories, bolnicama |
| 120kW | 195g/kW·h | About 24-28 litara | Industrial park, podatkovni centar |
| 150kW | 190g/kW·h | About 28-32 litara | Large construction sites, shopping malls |
| 300kW | — | About 60-75 litara | Mines, naftna polja |
| 450kW | 220g/kW·h | About 95-110 litara | Large-scale industrial projects |
| 500kW | 220g/kW·h | About 110-125 litara | Power stations, overseas projects |
Huaquan Power reminds you that some Huaquan units boast a thermal efficiency of up to 45% and a fuel consumption rate as low as 190 grams per kilowatt-hour, resulting in low operating costs and remarkable economic benefits.
II.Three core factors affecting fuel consumption
- Load factor (the most crucial factor)
Load rate is a decisive factor affecting fuel consumption, and its importance surpasses that of the unit size. Huaquan Power’s research indicates that the fuel economy of the unit is optimal when operating within the 70%-80% load range.
| load rate | fuel consumption performance | Impact on the engine | Huaquan’s suggestion |
| Manje od 20% | Fuel consumption has increased significantly | Harmful – incomplete combustion, carbon buildup | Prolonged operation is strictly prohibited |
| 50% | moderate | passable | Acceptable in the short term |
| 70%-80% | Lowest (highest efficiency) | Best – Fully Combusted | Preferred operational range |
| 90%-100% | Fuel consumption will increase | Acceptable – high heat load | Emergency availability |
Empirical testing by Huaquan Power shows that when the diesel generator operates at 80% of its rated load, one liter of fuel can generate 3.5 kWh of electricity. Kako se opterećenje povećava, fuel consumption rises accordingly. Huaquan’s generating sets exhibit minimal changes in fuel consumption rate when operating at loads ranging from 50% do 100%, making them economical for peak shaving and adaptable to a wide range of load variations.
- Unit power level
The absolute fuel consumption of large units is higher, but their relative fuel consumption (g/kW·h) is usually lower. The following is detailed fuel consumption data for different power units from Huaquan Power:
Small-sized unit (30-50kW):
| Unit model | vlast | fuel consumption rate | Engine model | Applicable scenarios |
| HQ30GF | 30kW | ≤258.4g/kW·h | K4100D | Household reserve, small-scale livestock farm |
| HQ50GF | 50kW | ≤231g/kW·h | R4105ZD | Small and medium-sized factories, škole |
Medium-sized unit (100-150kW):
| Unit model | vlast | fuel consumption rate | Engine model | Applicable scenarios |
| HQ100GF | 100kW | ≤231g/kW·h | R6105AZLD | Large factories, bolnicama |
| HQ120GF | 120kW | 195g/kW·h | — | Industrial park, podatkovni centar |
| 150jedinice kW | 150kW | 190g/kW·h (as low as) | — | Large construction sites, shopping malls |
Large-scale units (450-500kW):
| Unit model | vlast | fuel consumption rate | Engine model | Applicable scenarios |
| HQY450GF | 450kW | 220g/kW·h | YC6T700L-D20 | Large-scale industrial projects |
| HQY500GF | 500kW | 220g/kW·h | YC6TD780L-D20 | Power stations, overseas projects |
- Engine condition and maintenance
| Maintenance status | fuel consumption performance | explanation |
| In good condition | Fuel consumption is close to the nominal value | Air filter is clean, fuel injector is normal, and engine oil is qualified |
| Poor maintenance | 10%-20% higher than the normal value | Air filter blockage, worn fuel injector nozzle, severe carbon buildup |
| Long-term low-load operation | Abnormal increase in fuel consumption | Carbon buildup leads to a reduction in combustion chamber volume and a change in compression ratio |
Huaquan Power reminds you that due to delayed maintenance and repair of the diesel engine, incorrect detection and adjustment, or defects in certain parts of the diesel engine, although the diesel engine can still operate, the diesel combustion is not sufficient, resulting in black smoke emission from the exhaust pipe, which can lead to increased fuel consumption.
III. Fuel consumption estimation formula
- Quick estimation method (L/h)
For commonly used 50-500kW units, the following empirical formula can be used to quickly estimate fuel consumption per full-load hour:
Estimated fuel consumption (L/h) ≈ Unit power (kW) × 0.25
Instance calculation:
- Huaquan 100kW unit: 100 × 0.25 = 25 liters/hour (at full load)
- Huaquan 450kW unit: 450 × 0.25 = 112.5 liters/hour (at full load)
- Precise calculation method (based on fuel consumption rate)
Based on the technical parameters of Huaquan power, the fuel consumption rate can be accurately calculated:
Hourly fuel consumption (L/h) = Power (kW) × Fuel consumption rate (g/kW·h) ÷ Diesel density (approximately 0.84 kg/L) ÷ 1000
Example calculation – Huaquan HQ120GF (120kW, fuel consumption rate 195g/kW·h):
120 × 195 ÷ 840 × 1000 = 120 × 0.232 ≈ 27.9 liters/hour
Example calculation – Huaquan HQ100GF (100kW, fuel consumption rate 231g/kW·h):
100 × 231 ÷ 840 = 27.5 liters/hour
Bilješka: The density of diesel fuel is typically between 0.82 i 0.86 kg/L, and is generally taken as 0.84 kg/L for calculation purposes.
- Consider the revised estimation of load rate
The Huaquan Power study indicates that the fuel economy of the unit is optimal at 80% opterećenje:
Fuel consumption at 80% load hours ≈ Fuel consumption at full load × 0.9
Example calculation: For the Huaquan 100kW unit, with a full-load fuel consumption of 25 liters/hour, na 80% opterećenje (80kW):
25 × 0.9 = 22.5 liters/hour
U ovo vrijeme, the fuel consumption per kilowatt-hour is: 22.5 ÷ 80 = 0.28 liters/kWh
IV.Example of fuel cost calculation
Instance 1: Factory Standby Power Supply (300kW Unit)
A certain factory has equipped Huaquan 300kW diesel generator sets as standby power supply:
- Diesel price: 7.5 yuan/liter
- Estimated annual operation time: 200 sati (s rezervno napajanje opskrbiti)
- Average load rate: 75%
Calculation steps:
- Estimation of fuel consumption per hour at full load: 300 × 0.25 = 75 liters/hour
- 75% load correction: 75 × 0.9 = 67.5 liters/hour
- Hourly fuel cost: 67.5 × 7.5 = 506 yuan/hour
- Annual fuel cost: 506 × 200 = 101,200 yuan/year
Instance 2: Main power supply for mines (500jedinice kW)
A certain mine utilizes Huaquan 500kW Yuchai generator sets as its primary power source:
- Fuel consumption rate: 220g/kW·h
- Diesel price: 7.5 yuan/liter
- Annual operation time: 6000 sati
- Average load rate: 80%
Calculation steps:
- Precise hourly fuel consumption: 500 × 220 ÷ 840 = 131 liters/hour
- 80% load reduction by about 10%: 131 × 0.9 = 118 liters/hour
- Fuel cost per hour: 118 × 7.5 = 885 yuan/hour
- Daily fuel cost: 885 × 24 = 21,240 yuan/day
- Annual fuel cost: 885 × 6000 = 5,310,000 yuan/year
Huaquan Power reminds you that for primary power supply scenarios, fuel cost is a major expense in long-term operations. Some Huaquan Power units have a thermal efficiency of up to 45% and a fuel consumption rate as low as 190 grams per kilowatt-hour. Choosing high-efficiency units can save considerable fuel costs annually.
V.Practical methods to reduce fuel consumption
| method | explanation | Expected fuel-saving effect |
| Maintain the economic load range | Try to operate the unit at 70%-80% opterećenje | Avoid high fuel consumption under low load conditions |
| Redovito održavanje | Replace the air filter, oil filter, and diesel filter on time | Avoid consuming 10% more fuel due to poor maintenance |
| Select high-efficiency units | Choose a model with a low fuel consumption rate (such as 195g/kW·h) | It saves 5%-10% fuel compared to ordinary models |
| Use high-quality fuel | Diesel from regular gas stations has a stable calorific value | Avoid increased fuel consumption caused by inferior fuel |
| Multiple machines are powered on in parallel as needed | When there is significant load fluctuation, multiple small units should be connected in parallel | It can save 5%-15% gorivo |
Special reminder from Huaquan Power: To reduce fuel consumption of a diesel generator, operate the unit at oko 80% of its rated load. Prolonged low-load operation can actually increase fuel consumption and even damage the generator set, so it is important to correctly understand the relationship between fuel consumption and load of a Dizel generatorski set.
VI.Common problems
P1: Why is Huaquan diesel generator set fuel-efficient?
A: After undergoing energy-saving and innovative technological upgrades by Huaquan craftsmen, Huaquan generator sets exhibit significantly better fuel consumption and lubricating oil consumption rates compared to similar domestic products. Certain units boast a thermal efficiency of up to 45%, and a fuel consumption rate as low as 190 grams per kilowatt-hour. When the load of Huaquan units varies between 50% i 100%, there is minimal change in fuel consumption rate, indicating good economic performance during peak shaving.
Q2: How much fuel does a 300kw diesel generator set consume in one hour at full load?
A: When the Huaquan 300kw diesel generator set operates at full load, its fuel consumption per hour is approximately 60-75 litara. The actual fuel consumption depends on the load rate, with optimal fuel economy achieved at 80% opterećenje.
Q3: What factors affect the fuel consumption of a 550kw diesel generator set?
A: Huaquan Power’s research indicates that the fuel consumption of a 550kw diesel generator set is primarily influenced by two factors: firstly, the fuel consumption rate of the generator set itself, and secondly, the magnitude of the load. općenito, people believe that for diesel generator sets of the same brand and model, a higher load will result in greater fuel consumption, and conversely, a lower load will result in relatively lower fuel consumption.
Q4: Will fuel consumption be higher in winter?
A: Fuel consumption may slightly increase in winter (by approximately 3%-5%), primarily due to poor diesel atomization caused by low temperatures and increased friction resistance resulting from higher engine oil viscosity.
Q5: How can I find out the actual fuel consumption of my Huaquan generator?
A: There are three methods:
- Consult the technical manual: The product manual provided by Huaquan Power includes fuel consumption rate parameters
- Field measurement: After running for 1-2 sati, record the refueling amount of the fuel tank
- Using intelligent controller: The unit equipped with Huaquan intelligent control system can display cumulative fuel consumption
📌 Summary: Huaquan moć – a power generation expert with low fuel consumption and high energy efficiency
The fuel consumption of Huaquan diesel generator sets depends on three major factors: izlazna snaga, load rate, and maintenance condition. Quick reference table for core data:
| unit power | fuel consumption rate | Fuel consumption per hour at full load | Fuel consumption per hour at 80% opterećenje |
| 30kW | ≤258.4g/kW·h | 7-9 litara | 6-8 litara |
| 50kW | ≤231g/kW·h | 12-15 litara | 11-13 litara |
| 100kW | ≤231g/kW·h | 24-28 litara | 22-25 litara |
| 120kW | 195g/kW·h | 25-30 litara | 23-27 litara |
| 150kW | 190g/kW·h | 30-35 litara | 27-32 litara |
| 450kW | 220g/kW·h | 110-120 litara | 100-110 litara |
| 500kW | 220g/kW·h | 120-135 litara | 110-120 litara |
Core advantages of Huaquan Power:
- Low fuel consumption rate: Some units have a thermal efficiency as high as 45%, and the fuel consumption rate can be as low as 190g/kW·h
- Strong load adaptability: the fuel consumption rate changes little when the load varies from 50% do 100%
- Izdržljiv: After being upgraded with energy-saving and innovative technologies, it highlights its stability and convenience even more
- National joint warranty: 1,168 service stations established across the country provide users with prompt and timely services
For further technical details or to obtain fuel consumption data for specific models, please contact Huaquan Power’s customer service.




