What happens to the sudden drop in fuel consumption of a new car, a liter of fuel per 100 kilometers

This is how the engine works, sometimes the engine consumes a lot of fuel when it is just started, which means that the engine is heating up after the car has just started. In this way, the maintenance of the car is also better. So after you drive for a while, the fuel of the vehicle will drop, because the fuel consumption has been generated when the car is started, which is the engine has entered a low rev period, and the natural fuel consumption is laughing a lot.

The fuel consumption of the new car will drop during the departure period, and the instantaneous fuel consumption of some of your road sections will be high and the average value will be lowered, and the economic speed will lower the average value.

This has something to do with your driving habits, of course, it may also be because of the inaccurate reason of the fuel gauge, as well as air conditioning and many other reasons, before buying to the 4S shop to check whether there is a problem with the oil circuit, if not, that is the above several large reasons, my friend is JAC again, running in the middle of the road suddenly turned off, and then the maintenance person did not know the reason for a long time, and later found that the oil gauge was broken, in fact, there is no oil and half a line of oil on it.

If you run a closer distance (a few kilometers), it will consume more fuel! Because the car is not hot, the engine does not reach a certain temperature is more fuel-burning, and the average fuel consumption of a car is calculated, the fuel tank must be filled, and then start running.

First, more than 200 kilometers, and then fill the fuel tank, then you can calculate the standard fuel consumption of the car, fuel money divided by the kilometers run = how many gross kilometers, I hope to help you.

Abnormal. If the car's fuel consumption suddenly decreases in a short period of time, it may be caused by the failure of some parts of the vehicle.

First, the sudden reduction in fuel consumption pressure relief valve is the culprit?

Generally speaking, a sudden decrease in fuel consumption is not common on self-priming models, and turbo versions are relatively common. We all know that the biggest difference between the self-priming engine of the turbine engine is that the turbo engine has an additional supercharger, and the function of the supercharger is to "blow" the inside of the engine to increase the air intake, so that the engine squeezes more power. Of course, the higher the engine intake, the more fuel the engine must inject in order to maintain a constant air-fuel ratio, and the fuel consumption will increase accordingly.

And when the turbine is in working condition, the higher the speed, the greater the intake pressure of the engine. However, if the engine does not limit the intake pressure, it will lead to excessive engine intake pressure, and the pressure in the cylinder is too large when the engine cylinder is compressed, and the cylinder may not be able to withstand this strength, resulting in the cylinder bursting and the engine being scrapped! Therefore, in order to avoid too much intake pressure, the turbocharging must be limited, so the turbine engine is equipped with a "pressure relief valve".

The average fuel consumption fluctuates, which may be caused by the driver's driving habits or external factors. The average fuel consumption of the car suddenly increases, which is very affected by the driver's driving habits, if the driver often drives the car intensely, the average fuel consumption of the car will naturally increase, and only by maintaining the correct driving habits, the fuel consumption of the car will remain in the best state.

Summary. Hello dear and honored to answer your <>

The reason why fuel consumption has been fluctuating for 100 kilometers is that the engine has too much carbon deposit, which causes unstable fuel consumption, in this case, it is recommended to clean the throttle and intake tract carbon deposits, and then check whether the carbon deposits in the cylinder are serious, and then use the computer to rematch the throttle.

What is the reason why fuel consumption per 100 kilometers has been changing?

Hello dear and honored to answer your <>

The reason why fuel consumption has been fluctuating for 100 kilometers is that the engine has too much carbon deposit, which causes unstable fuel consumption, in this case, it is recommended to clean the throttle and intake tract carbon deposits, and then check whether the carbon deposits in the cylinder are serious, and then use the computer to rematch the throttle.

Hello dear, the following is the relevant extension I found for you, I hope it will help you<> constant velocity fuel consumption is the fuel consumption of 100 kilometers of vehicles obtained in the constant speed driving fuel consumption test of certain types of vehicles specified in the national standard. These types of vehicles include: (1) M1 class, M2 class and N1 class compressed natural gas vehicles with a maximum design total mass not exceeding them; For M1 and N1 vehicles with a maximum design total mass not exceeding the test method specified in the GB T Passenger Car Fuel Consumption Test Method.

2) Compressed natural gas vehicles of M2 class, M3 class, N2 class and N3 class with the maximum design total mass exceeding; Class M2, Class M3 and Class N vehicles with a maximum total mass greater than or equal to 2T shall be tested according to the test method specified in the Test Method for Fuel Consumption of GB T Commercial Vehicles.

The reasons for the following aspects are for reference only: 1. Sensor failure; 2. The quality of gasoline is not up to standard; 3. The air leakage of the inlet pipe leads to the mixture being too thin; 4. The fuel pressure is low, and the injector and fuel filter are blocked; 5. The signal of the pressure sensor and the throttle position sensor is abnormal; 6. The ignition timing is inaccurate and the ignition is too late. 7. Weak high-voltage sparks due to poor spark plugs, igniters or high-voltage wires; 8. The throttle is dirty; 9. The exhaust gas recirculation system works poorly; 10. The exhaust pipe is blocked; 11. The cylinder pressure is low; 12. Turbocharging system failure 13. Clutch three-piece set, 14. Air filter blockage, piston ring broken or stuck, poor valve sealing, late time of point segment fire, carburetor mechanical failure, air intake pipe leakage, individual cylinders do not work well or do not work, etc. However, some of the faults of insufficient engine power can be solved by use. Such as:

General wear of the cylinder, poor flow of the carburetor oil passage, etc. When the user reflects the lack of engine power, burning oil, we should first judge the cause of the lack of power under the spine, in the exclusion of the air filter blockage, carburetor throttle can not be fully opened, ignition timing is not good, the intake pipe gasket is damaged, individual cylinders do not work or work badly and other reasons, and then according to the engine fuel consumption is too high to judge the carburetor working conditions, if the fuel consumption is too high, the exhaust smoke is very thick, it is likely that there is a mechanical failure such as the volume hole falling off, this fault must be repaired. Finally, we have to judge the wear and tear of the engine cylinders of the Sakura Fuel Balance.

Engine wear directly affects the tightness of the cylinder; Therefore, checking the tightness of the cylinder can largely reflect the degree of wear of the cylinder, and the most convenient way to check the tightness of the cylinder is to use the cylinder pressure gauge to check the compression pressure of the cylinder.

The party that thinks that the fuel-saving side of the gear coasting thinks that when the car is coasting at high speed, the engine will automatically cut off the fuel, and the engine will automatically stop supplying fuel before the engine speed is higher than the "reverse sequence injection point". Models with instantaneous fuel consumption display can pay attention to the fact that in the case of coasting in gear (without stepping on the accelerator), the instantaneous fuel consumption will be displayed as 0, and the coasting in neutral gear will show fuel consumption.

The automatic car is estimated to be wasted, coasting is OK, but do not slide downhill and turning and overtaking, otherwise it will cause traffic accidents because of the brakes, neutral sliding, easy to lose control and affect driving safety, there is no ramp where the inertia speed is limited, idle neutral continuous braking, brake disc is easy to heat, affect braking performance. Sometimes coasting in gear consumes less fuel than coasting in neutral, and it also ensures driving safety.

Therefore, coasting is not fuel-efficient, if it is an AT transmission, coasting will increase the oil temperature, and there are hidden dangers to the transmission and lubricating oil, which is not conducive to the safety of the whole vehicle. For example, in the process of coasting in high-speed gears, in fact, there is no fuel injection, and the instantaneous fuel consumption is O. Coasting, on the contrary, produces idle fuel consumption.

Therefore, the car coasting in high-speed neutral gear will not only not save fuel, but will increase fuel consumption. When coasting in gear, the engine itself will provide a certain amount of pulling, and with the braking, the braking distance of the car will be shortened. Moreover, the neutral coasting car is easy to stall, resulting in the failure of the brake booster drum and the decline of braking performance.

I am a model, Volkswagen CC, the lowest average fuel consumption has run to 100 kilometers per 100 kilometers, do you believe it? Anyway, I don't believe it, it's okay to have a difference of 1L per 100 kilometers between the fuel consumption gauge and the actual fuel consumption. After all, the models are different, the displacement is different, and the weight of the vehicle is different, and the corresponding ideal fuel consumption level is completely different.

It is impossible to uniformly say that the fuel consumption of 100 kilometers is low fuel consumption. No matter how you calculate it, you can't count three barrels of oil, if the oil price is the same as the export, yuan l, and the oil quality is good, no one will calculate the fuel consumption.

Engine parts need to be maintained, so when the fuel consumption is abnormal, you should check whether the engine parts need to be maintained, repaired and replaced in time.

Tires, tire pressure, tire pattern is appropriate, and whether the wear is serious. These can not only directly affect fuel consumption, but also affect driving safety.

Spark plugs, if the spark plugs are used for too long, there will also be an increase in fuel consumption.

It may be that there is carbon deposit, or there may be some small faults inside the engine that cause fuel consumption to increase, and it is also necessary to see if the quality of the oil added recently is the same as usual.

Usually very fuel-efficient, but the main reason for the sudden increase in fuel consumption is because of the engine, at this time the engine must have failed, so there will be such a significant increase in fuel consumption.

1.Carbon deposits in the engine and long-term operation of the car will inevitably produce carbon deposits and sludge during gasoline combustion. If these sludge and carbon deposits are not cleaned up in time, the fuel consumption of the car will increase.

2.If the spark plug fails, the function of the automobile spark plug is to use high-voltage electricity to generate an electric spark to ignite the gas mixture. If damaged, the ignition energy will decrease, and the hail stove mixture will burn unevenly, resulting in slower vehicle speed and higher fuel consumption.

3.Abnormal tire pressure and abnormal tire pressure in cars can also have an impact on the fuel consumption of the car. When the tire pressure is too low or the tread is seriously worn, the contact area between the tire and the road surface becomes larger, the source friction increases, the rolling resistance increases, and the fuel consumption naturally increases.

4.Long-term pulling of the load on the vehicle will increase the weight of the overloaded vehicle, increase the driving pressure of the vehicle, and increase the fuel consumption of the vehicle.

5.The injector atomization effect is not good. This may be a blockage of the injector of the car, which greatly affects the effect of the injector of the car, and will also lead to an increase in the fuel consumption of the car.

6. The failure of the car sensor is also the main reason for the increase in fuel consumption of the car, when the water temperature transmission crack sensor fails, so that the engine mistakenly thinks that the car belongs to the cold state, and will always transmit the information of fuel injection, resulting in the increase of fuel consumption of the car.

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Reasons for the sudden increase in car fuel consumption 1. Tires:

In the normal driving process, if there is a sudden increase in fuel consumption, first check the tires of the car, if the tire pressure is insufficient, the phenomenon of increased fuel consumption may occur, the tire pressure of the car is abnormal, and there will be abnormal wear of the tire, the tire pressure is too low, which increases the friction between the tire and the ground, resulting in an increase in the fuel consumption of the vehicle.

2. Serious carbon deposition in the engine

Automobile carbon deposition will affect normal combustion, fuel can not be fully combusted, directly discharged, and does not provide greater power for the engine, but increases the fuel consumption of the car, so the owner needs to clean up the car carbon deposition in time to avoid the increase in automobile fuel consumption due to carbon deposition in the process of driving.

3. Gasoline filter element:

After the gasoline filter element is abnormal, the signal can not be accurately transmitted, and when the error signal is provided to the control unit, the amount of fuel injection will increase, resulting in the waste of fuel and the phenomenon of rising fuel consumption, so it is necessary to replace the gasoline filter element in time, especially when maintaining the car, check the gasoline filter element.

4. Inferior gasoline:

After adding inferior gasoline, it will directly affect the power of the car, and there are more impurities in inferior gasoline, resulting in insufficient combustion of gasoline, and fuel consumption will also increase.

What's going on with a sudden increase in car fuel consumption.

1. Carbon deposition in the engine, long-term operation of the car, gasoline in the combustion process, will inevitably produce carbon deposition and sludge, these sludge and carbon deposition if not cleaned in time, will lead to an increase in automobile fuel consumption.

2. If the spark plug fails, the function of the automobile spark plug is to use high-voltage electricity to generate electric sparks to ignite the mixture. If the damage will reduce the ignition energy and the mixture will burn unevenly, it will cause the car to slow down and increase fuel consumption.

3. Abnormal tire pressure and abnormal pressure of automobile tires will also have an impact on the fuel consumption of the car. When the tire pressure is too low or the tread is seriously worn, the contact area between the tire and the road surface becomes larger, the friction increases, the rolling resistance increases, and the fuel consumption naturally increases.

4. If the car is loaded for a long time, the weight of the vehicle with too much load will increase, the driving pressure of the car will also increase, and the fuel consumption of the car will also increase.

5. The atomization effect of the fuel injector is not good, and this situation may be that the car fuel injector is blocked, which will greatly affect the effect of the car fuel injector, which will also lead to an increase in car fuel consumption.

6. The failure of the car sensor is also the main reason for the increase in fuel consumption of the car, when the water temperature sensor fails, the engine mistakenly thinks that the car belongs to the cold state, and the fuel injection information will be transmitted all the time, resulting in the increase of the fuel consumption of the car. (Photo by Q&A: Q&A called the beast) @2019