Katerina Swanson
Fuel consumption is a crucial metric for understanding a vehicle's efficiency, and it is calculated by dividing the amount of fuel used in litres by the distance travelled in kilometres, and then multiplying that number by 100. This value is usually expressed in litres per 100 kilometres (L/100km). Trucks tend to have low fuel efficiency due to their heavy weight and inconsistent drive cycles. For example, a 2012 Hino 617 165 HP manual truck can consume 16-18 L/100km, while a 2006 Isuzu FSS 550 190 HP manual 4x4 truck can consume 26-30 L/100km.
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What You'll Learn
- Fuel consumption formula: (Litres used x 100) ÷ kilometres travelled
- Fuel economy: efficiency measured in miles per gallon (MPG) or kilometres per litre (kmpl)
- Fuel consumption rates: the Isuzu FSS 550 190hp manual 4x4 truck consumes 26-30 litres per 100 km
- Refuse trucks: lower fuel economy due to weight and inconsistent drive cycles
- Class 8 trucks: lower fuel economy due to heavier loads
Fuel consumption formula: (Litres used x 100) ÷ kilometres travelled
Fuel consumption is a measure of how efficiently a vehicle uses fuel. It is calculated by dividing the amount of fuel used in litres by the distance travelled in kilometres. This can be done for any distance, but it is most commonly measured in litres per 100 kilometres (L/100km).
To calculate fuel consumption per 100 km, you can use the formula:
> Fuel consumption (L/100 km) = (Litres used x 100) ÷ kilometres travelled
For example, let's say a car consumes 65 litres of fuel to travel a distance of 500 kilometres. To calculate its fuel consumption in L/100 km, we can use the formula:
> Fuel consumption (L/100 km) = (65 litres x 100) ÷ 500 km
> Fuel consumption (L/100 km) = 6500 ÷ 500
> Fuel consumption (L/100 km) = 13 L/100 km
This means that the car consumes 13 litres of fuel to cover a distance of 100 kilometres.
It's important to note that fuel consumption can vary significantly depending on the vehicle and other factors such as payload and terrain. For example, a 2012 Hino 617 165 HP manual truck might consume 16-18 L/100km, while a heavier service truck might consume 30 L/100km.
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Fuel economy: efficiency measured in miles per gallon (MPG) or kilometres per litre (kmpl)
Fuel economy, also known as fuel efficiency, is a form of thermal efficiency that measures how efficiently a vehicle uses fuel. It is calculated as the ratio of distance travelled per unit of fuel consumed. This can be quantified in miles per gallon (MPG) or kilometres per litre (kmpl).
The formula for calculating fuel consumption is:
> Fuel consumption = Fuel used / Distance travelled
For example, if a vehicle consumes 100 litres of fuel to travel a distance of 1320 km, the calculation would be:
> Fuel consumption = 100 L / 1320 km = 0.07576 L/km
To convert this to the more typical unit of litres per 100 kilometres, we can multiply the above value by 100 km/100 km:
> Fuel consumption = 0.07576 L/km x 100 km/100 km = 7.576 L/100 km
Fuel economy is typically expressed in litres per 100 kilometres (L/100 km) in countries using the metric system, such as most European countries, Canada, China, South Africa, Australia, and New Zealand. In Ireland and the UK, miles per imperial gallon may also be used alongside L/100 km. In the US, fuel economy is commonly expressed in miles per US gallon, with the window sticker on new cars displaying both the mpg and L/100 km values.
The fuel economy of trucks can vary depending on their payload and weight. For example, a 2012 Hino 617 165 HP manual truck with a payload of 4.5 tons may consume 16-18 L/100 km, while a heavier truck, such as the Isuzu FSS 550 190 hp manual 4x4 truck weighing 7.7 tons, may consume 26-30 L/100 km.
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Fuel consumption rates: the Isuzu FSS 550 190hp manual 4x4 truck consumes 26-30 litres per 100 km
Fuel consumption rates vary depending on the type of vehicle. For instance, a car's fuel consumption rate is 13 litres per 100 kilometres, while a truck's fuel consumption rate can be much higher.
The fuel consumption rate of a truck depends on various factors such as the weight of the load it is carrying, the terrain it is traversing, and the efficiency of the truck's engine. For example, a Hino 617 165 HP manual truck with a load of 4.5 tons is estimated to have a fuel consumption rate of 16-18 litres per 100 kilometres.
The Isuzu FSS 550 190hp manual 4x4 truck, weighing in at 7.7 tons, consumes 26-30 litres of fuel per 100 kilometres. This is a significantly higher fuel consumption rate compared to other trucks in its class.
To calculate the fuel consumption rate, one can use the following formula: Fuel Consumption (L/100 km) = (Litres Used x 100) / Kilometers Traveled. This formula allows for a standardised measurement of fuel consumption, enabling comparisons between different vehicles.
By understanding the fuel consumption rates of vehicles, individuals can make more informed decisions when purchasing a vehicle, especially when considering the associated fuel costs and environmental implications.
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Refuse trucks: lower fuel economy due to weight and inconsistent drive cycles
The fuel consumption of a vehicle is a measure of how efficiently it uses fuel, or fuel economy. This can be calculated by dividing the amount of fuel used in litres by the distance travelled in kilometres and multiplying the product by 100. This is usually expressed in litres per 100 kilometres (L/100km).
For trucks, the fuel consumption varies depending on the weight of the truck and its cargo, the model, and the driving conditions. For example, a 2012 Hino 617 165 HP manual truck loaded to 4.5 tons consumes 16-18 L/100km. A heavier 2006 Isuzu FSS 550 190hp manual 4x4 truck, weighing 7.7 tons, consumes 26-30 L/100km.
Refuse trucks, which are heavy-duty diesel vehicles, tend to have lower fuel economy due to their weight and inconsistent drive cycles. These trucks spend about 50% of their time idling and more than 25% of their time at speeds of 25 mph or higher. The average fuel economy of these trucks is 4.4 mpg, with an average speed of 16 mph. The low fuel economy of refuse trucks can be attributed to the weight of the vehicle and the trash it collects, as well as the stop-and-go nature of their drive cycles.
The fuel economy of refuse trucks can be improved by optimising their weight and reducing idle time. For example, front-loader trucks have 55% better fuel economy than side-loader trucks due to differences in weight and activity patterns. Additionally, newer model trucks have lower CO2 emissions and better fuel economy than older models. By analysing the effect of haul weight on fuel use, fleet managers can make informed decisions to reduce fuel costs.
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Class 8 trucks: lower fuel economy due to heavier loads
The fuel economy of a vehicle is a measure of how efficiently it uses fuel, often quantified in miles per gallon (MPG) or kilometers per litre (kmpl). Class 8 trucks, which carry heavier loads, have relatively low fuel economy.
To calculate the fuel consumption per 100 kilometres, you divide the amount of fuel used in litres by the distance travelled in kilometres, and then multiply that figure by 100. For example, a vehicle that consumes 100 litres of fuel to travel 1320 kilometres has a fuel consumption rate of 7.576 litres per 100 kilometres.
Fuel consumption rates for trucks vary depending on the weight of the load they carry. A 2012 Hino 617 165 HP manual truck with a load of 4.5 tons consumes 16-18 litres per 100 kilometres. A heavier 2006 Isuzu FSS 550 190hp manual 4x4 truck weighing 7.7 tons consumes 26-30 litres per 100 kilometres. An even heavier 8-ton service truck consumes 30 litres per 100 kilometres.
The average fuel economy of Class 8 trucks has improved in recent years, increasing from 5.85 MPG in 2013 to 6.91 MPG in 2022, with an average fleet-wide fuel economy of 7.77 MPG in 2023. However, there is still room for improvement, as modern production-level trucks can achieve fuel economy in excess of 10 MPG on long-haul routes.
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Frequently asked questions
On average, a car consumes 13 litres of fuel per 100 kilometers.
To calculate fuel consumption per 100 km, divide the amount of fuel used in liters by the distance traveled in kilometers and multiply the product by 100.
Trucks that are heavier and drive inconsistent, stop-and-go drive cycles tend to have lower fuel economy.
The fuel consumption rate depends on the weight and model of the truck. For instance, a 2012 Hino 617 165 HP manual truck that weighs 4.5 tons has a fuel consumption rate of 16-18 L/100km, while a 2006 Isuzu FSS 550 190hp manual 4x4 truck that weighs 7.7 tons has a rate of 26-30 L/100km. For a service truck weighing 8 tons, the fuel consumption rate is 30L/100km.
