Instruction

1

To calculate the

**consumption****of gasoline**, it is easiest to install in the car trip computer. Way of course the easiest, but not very reliable. Modern systems give information you close to reliable data, but most of the devices continue to lie shamelessly.2

To calculate the

**consumption****of gasoline**, forgive just install in car trip computer. Way of course the easiest, but not very reliable. Modern systems give information you close to reliable data, but most of the devices continue to shamelessly and cowardly to lie.3

am required to drive as long as the panel is not red light, notifying you that your gasoline is running out. Visit the gas station - it is important that

**gasoline**is still enough to a nearby gas station. Pour a full tank and note the odometer reading. Next, you need to go a hundred miles and again stop at a gas station to fill my tank to the brim. Now, rate the amount of fuel – this figure will be your**expense**ohms per hundred kilometers. In practice, however, to drive a hundred miles and be at the gas station - is quite problematic.4

You can drive any amount of miles and doing the same manipulations, after calculate

For example, you drove 115 miles. At the gas station filled 13 gallons. Now we make the calculation. # 115 km -13 liters

# 100 km X litres.Thus: X = 1300/ 115 = 11.3 liters per 100 km.

Here it is your

**the flow rate**using this equation.For example, you drove 115 miles. At the gas station filled 13 gallons. Now we make the calculation. # 115 km -13 liters

# 100 km X litres.Thus: X = 1300/ 115 = 11.3 liters per 100 km.

Here it is your

**flow rate**: 11.3 liters per 100 km.5

It is often necessary to make such measurements. They will give you an idea about the technical condition of your car. And once warned is protected.

Note

So if you do not know everything, and surely is)), write the formula. consumption per 100 km=(100 km*number of refuelled gasoline )/mileage fueled on gasoline. Example: consumption per 100km =(100 km*(say the bosses 15 l))and divide by mileage(dopustim pribilina these 15 litres 200 km)= 7.5 liters of Guys counted the cost 100km on gas and on petrol...

Useful advice

How to calculate fuel consumption. The problem of fuel consumption concerns everyone who has a car. But more on that later, but for now let's look at why it may increase the fuel consumption and what actually affects it. All the causes can be divided into subjective and objective. The first are those that affect the expense of "our fault" and we may affect them.

# Advice 2 : How to calculate the rate of flow of fuel

The norm

**of consumption****of fuel**of the car is the value which shows how much was spent of petrol (diesel**fuel**, gas) during the passage of the vehicle a certain number of kilometres.Instruction

1

Lately, most cars (especially cars) are equipped with on-Board computers. Therefore, to know the norm

**of consumption****of fuel**is not difficult to define, just look at the scoreboard on that computer, which displays all the information.2

If you have no onboard computer to determine the consumption

- reset the counter on the speedometer to know how many miles you drive;

- when gasoline runs out, divide the number of kilometers by the number of litres flooded with

**of fuel**as follows:- fill fuel tank completely;- reset the counter on the speedometer to know how many miles you drive;

- when gasoline runs out, divide the number of kilometers by the number of litres flooded with

**fuel**and you will get the rate**of consumption****of fuel**.3

However, the consumption

**of fuel**is not always the same. Large influence a lot of factors.You first need to check the air filter and if necessary replace it with exhaust filter consumption**of fuel**is greatly increased.4

The second action you want to perform is the measurement of carbon monoxide (CO) during idling at rpm 2000 – 3000 rpm. If the level is too high, you will need the help of experts.

5

It should be remembered that it is not adjusted, the machine consumes about 10% more

**fuel**. Wheel with a little pressure just to increase the consumption**of fuel**.6

The alignment must be very accurately adjusted, this will save on gasoline. If the car has air conditioning, the consumption

**of fuel**increases by 10%, and sometimes more, it will depend on the operation mode.7

Remember that open Windows of the car at a speed exceeding 50 km/h increases consumption by 2-3%, the higher the speed and more open the glass, the greater the expense.

8

With frequent deceleration of the vehicle and subsequent dispersal also increases gasoline consumption. Do not brake sharply try to smoothly decelerate.

9

Being on a hill or slope, keep the car on the handbrake and not using the clutch and accelerator pedal.

10

Proper selection of gear also help to reduce the consumption

**of fuel**, do not switch high gear ahead of time, this will reduce acceleration and increase the consumption**of fuel**.11

Observe the optimum speed at which the consumption

**of fuel**is minimal, usually equal to 90-100 km/hour.12

Don't warm up your car longer than two minutes, unless of course the street is not a strong negative.Calculate

*the norm***of consumption****of fuel**of the vehicle by using the data provided, which must be considered when choosing the mode of driving. Should be considered and what the technical status of the car.# Advice 3 : How to calculate fuel consumption

To calculate

**the consumption****of fuel**for a specific vehicle without any sorts of measurements. Methods for calculating fuel consumption based on measurement of fuel consumed per 100 km, often give contradictory testimony. However, fuel consumption is a strictly defined value and is calculated from knowledge of the laws of physics.You will need

- Calculator

Instruction

1

During operation of the internal combustion engine is the combustion process the fuel-air mixture with heat. Thermal energy is converted into mechanical and causes to move the car. The optimum air-fuel mixture for gasoline engines: 1 gram of gasoline 14.7 grams of air. In other words, 14.7 grams of air contains a necessary and sufficient amount of oxygen to burn 1 gram of fuel.

2

The engine will not be able to run on a too rich mixture and too lean and eventually stall. For normal operation of the engine optimum (close to ideal) fuel mixture. Carbureted engines run on enriched to 3-5% of the mixture, injection 3-8% lean mixtures. Anyway, the engine operates within a very narrow range of composition of the fuel mixture, and will stall if given fuel for 10% more or less.

3

Fuel consumption is the amount of fuel in the combustible air-fuel mixture. It is easy to calculate the amount of fuel consumed by the engine. The basis is the volume of engine cylinders, a quantity of the fuel mixture which will burn in the engine in one cycle (2 revolutions). Dividing the volume of the engine in half, it turns out the same amount for 1 turn. For example, the BMW 320 engine 2000 CC per revolution burns 1 liter of the mixture.

4

To calculate the amount of fuel contained in 1 liter of the mixture is used the weight of the air (1.2928 kg per cubic meters at normal conditions) and the optimal mixture ratio (14.7:1).

1.2928/14.7=0.088 Therefore, in one liter optimal fuel-air mixture contains 0.088 gram of fuel. Then multiply the amount of combustible mixture per revolution on the contents of fuel in the mixture. In our example it will be 1*0.088=0.088 grams. This value – fuel consumption of the engine per revolution.

1.2928/14.7=0.088 Therefore, in one liter optimal fuel-air mixture contains 0.088 gram of fuel. Then multiply the amount of combustible mixture per revolution on the contents of fuel in the mixture. In our example it will be 1*0.088=0.088 grams. This value – fuel consumption of the engine per revolution.

5

Multiplied by the number of revolutions is calculated the fuel consumption. For our example, at idle (700 rpm) in the engine of the BMW will burn 0.088*700=61.6 grams of fuel. On the track, when the engine is running at 2000 rpm the fuel consumption will be 0.088*2000=176 grams per minute or 176*60=10560 grams per hour. During this time, the car will travel about 60 km.

6

From all this it is evident that the fuel consumption of the engine is directly proportional to its volume. Mounted on the vehicle's onboard computer to more accurately calculate and show the fuel consumption.

7

However, the air-fuel mixture in all operation modes optimal. It is depleted with engine braking, short-term enriched with a sharp set of revs and when the engine is under load. Warmed up the engine at high rpm and rich mixture. Fuel consumption in these modes will be different from the calculated one.

Note

The calculated fuel consumption can vary from actual for the following reasons: inaccurate quantity of filled fuel, fuel leaks in the tank or fuel line and others.

Useful advice

For accuracy the result of the calculation can be corrected: 3-5% in a big way for the carbureted engine and 3-8% lower for fuel injected engine.