What road conditions does the car cost fuel? What is the reason for the cost of car fuel?

It is most fuel-intensive in congested road conditions.

We all know that in addition to the fixed driving fuel consumption of each car, the most fuel-consuming place is the start, when we need a lot of kinetic energy to drive the car every time the vehicle starts, this time will instantly increase the energy required by our engine, this energy ** is our fuel. Therefore, it is the most fuel-intensive in congested road conditions and other road conditions that require us to start and stop constantly. Look

1. The fuel consumption when overtaking is higher than that of normal driving, especially the fuel consumption of the narrower road section is the most serious when the car starts and brakes fiercely.

2. Waiting for a long time without turning off the engine, daily driving is easy to encounter traffic jams in front of the traffic accident, more than 5 minutes should choose to turn off the engine and wait.

3. The gear does not match the vehicle speed, and the low-speed gear will increase fuel consumption if the low-speed gear is high-speed, and the high-speed gear and low-speed driving will increase fuel consumption.

4. Frequent start and brake, such situations are mostly due to the inaccurate prediction of road conditions and inaccurate speed control of the owner.

5. There are many sundries in the car, and the car is "loaded" and naturally consumes oil.

6. Failure to check the tire pressure in time, and the fuel consumption of low-pressure tires is serious.

8. The fuel consumption of air conditioning and refrigeration is very large! Look

The car is in the noisy urban area, and it costs fuel in the most dense places, because the car starts again after braking and stopping. It must cost gas, he is only on the road at a constant speed. He can achieve a fuel-efficient state.

The car is in that uphill time. It's the kind of splash that is steeper. In addition, there are many cars in the city, and the driving is relatively slow, so in this case, it is more fuel-intensive. In addition, when the car is driving very slowly, it also consumes fuel.

Cars generally cost more fuel when driving in relatively congested road conditions in urban areas, especially in the case of frequent starting and braking.

The car starts to consume fuel as soon as it is on, especially when climbing hills and carrying people.

Hello, when climbing slopes or uneven roads, and when there is a traffic jam in the urban area, I hope mine will help you.

There are mainly the following reasons for the cost of car fuel:

First, the driver's technical level: unreasonable addition and reduction of gears and excessive braking in driving, artificially increasing the power loss of the engine. At the same time, too much braking will increase the number of starts, because the fuel consumption rate is very high at the start.

Low temperature driving: the car requires the engine to drive at a normal temperature (80 to 90), if it is driven without preheating after starting, the engine is in a low temperature state, which will make the mixture atomized poorly and the combustion is not complete.

Second, the technical condition of the engine. (1) Carburetor. The oil level of the carburetor float chamber is too high; The air filter is too dirty, and the carburetor air volume hole is too dirty; In long-term use, the oil volume hole of the carburetor is enlarged by fuel; The idle speed adjustment is too high; The semi-balanced hole of the float chamber is blocked, resulting in siphoning, etc.

2) Ignition system. The partial short circuit of the high-voltage coil, the ablation of the distributor contact, and the breakdown of the capacitor will cause the high-voltage fire to be weak, the ignition capacity to decrease, and the fuel consumption of some mixtures can not be completely ignited. Excessive carbon accumulation in spark plugs, leakage of spark plugs, spark plug sleeves and individual high-voltage lines will also cause the ignition capacity to decrease and individual cylinders do not work to increase fuel consumption.

3) Gas distribution mechanism. In the valve mechanism, the valve clearance is too large or too small can not achieve the purpose of sufficient air intake and clean exhaust, at the same time, the valve spring is too soft, the valve, the valve is ablated, so that the valve can not reach the ideal sealing degree, so that the cylinder pressure is reduced, and the engine power is reduced. (4) With the growth of engine working time, the wear of cylinders, pistons and piston rings increases, so that the sealing property decreases, and the fuel consumption naturally increases.

At the same time, the overlapping ports during piston ring assembly are also a factor during repairs.

3. Lubrication and adjustment of the drive train. The automobile is operated by the high-speed rotation of the various parts of the drive train, and when the parts of the drive train are poorly lubricated, or the gap is not properly adjusted, the transmission resistance will be increased and the fuel will be consumed.

The reasons for the increasing fuel consumption of the car are: engine carbon deposit, spark plugs need to be replaced, oxygen sensor is broken, the "three filters" are not replaced in time, the idle time is too long, and the tire pressure is abnormal. Here's an analysis of the specific reasons why cars are becoming more and more fuel-intensive.

Reasons why cars are becoming more and more fuel-intensive:

1. Engine carbon deposit. Stop-and-go road conditions in the city will increase carbon deposits, and the habit of idling in place to warm up the car will also increase carbon deposits, and many road conditions and driving habits will increase carbon deposits. If there is too much carbon deposit, it will affect the air intake of the throttle, and the car will become easy to stall. Carbon deposits can also adhere to the intake tract, reducing the intake efficiency and making the oil-gas mix poor. Severe carbon deposits can also crowd out the cylinder volume, which also affects the combustion quality and causes knocking.

2. The spark plug is about to be replaced. The spark plug is responsible for igniting the mixture in the cylinder. Perennial operation will consume it, which will lead to insufficient ignition energy and insufficient sparks.

The combustion time of the cylinder is very short, and it is too late to slow down, and the quality of the ignited spark is directly related to the quality of combustion and the completion of combustion.

3. The oxygen sensor is broken. If the car reaches such a condition of 12 150,000 km, you can consider replacing it. The oxygen sensor is installed in the exhaust pipe of the vehicle, which is responsible for detecting the oxygen content in the exhaust gas, which is fed back to the engine EFI control system.

4. The "three filters" were not replaced in time. If the "three filters" are not replaced for a long time, there will be more dirt inside it, which will affect the use, and there will be a large error in the data transmitted to the engine ECU, resulting in an increase in fuel consumption.

The reason for high fuel consumption is first of all caused by poor driving habits. Personal driving habits have a big impact on fuel consumption. Due to the mechanical design.

and other factors, the engine needs to run for a period of time to achieve the best running effect! Move and refuel, minimizing the driving habit of putting one foot on the accelerator and the other on the brakes. Generally speaking, 60-90 kilometers per hour is the most economical speed.

At high speed, do not exceed 100 metric miles of silver, fuel consumption will be very good.

The second reason is:Car enginescondition and excessive tire pressure。Abnormal ignition system of the engine also has a great impact on fuel consumption, such as inaccurate ignition time and high-voltage lines.

Leakage, spark plugs.

Carbon deposits lead to poor ignition, etc., which will reduce the combustion efficiency of the car. engine and increase fuel consumption. There is also the maintenance of the engine. According to statistics, it is normal for a poorly maintained engine to increase fuel consumption by 10% or 20%. If the air filter.

Too dirty, it may also increase fuel consumption by 10%. To maintain the optimal performance of your car, it is best to change the oil and check the filter every 5000 km.

If you don't change the oil and air filter for a long time, it will also lead to an increase in fuel consumption. If the oil is not changed for a long time, it will lead to poor lubrication, which will increase the resistance of the movement of engine components, and more resistance needs to be overcome, which will significantly increase fuel consumption. If the air filter is too dirty, it will lead to poor air intake, and the engine will consume more energy when inhaling; In addition, insufficient air intake will also lead to insufficient combustion, and some gasoline will not burn or form carbon deposits, which will also increase fuel consumption by bending the bridge.

To know that when driving, you must first understand the current road conditions, and what kind of road conditions determine what kind of driving style. Other motor vehicles on the road, non-motor vehicles.

Pedestrians, road conditions, etc., depending on the road conditions, the driving style is also different. The city test consists of four identical cycles, each consisting of a series of acceleration, steady speed, deceleration, and idling.

Compose. The maximum speed of each cycle is 50 km h, the average speed is 19 km h, the test time is 195s, and the mileage of the four loops is about 4 km.

Causes of high fuel consumption in automobiles and how to solve them:

1. Reason for high fuel consumption of automobiles: tires. Tires are easier to inspect, so you should check your tires first.

If the tire pressure is insufficient, the fuel consumption will increase. If there is no problem with the air pressure, then check the wear degree of the tire, when the tire wear is severe, there will be frequent signs of slippage, which will also increase fuel consumption.

2. The second reason for the high fuel consumption of the car: the engine. If there is a lot of carbon deposition in the engine in the short term, it will also cause high fuel consumption of the car, which is likely to be the use of substandard oil.

The solution is to add a certain amount of detergent when refueling, if the effect is not obvious, it means that there is more carbon in the engine, which has to be handed over to the 4S shop or maintenance shop, and the technician will clean the carbon deposit in the engine.

3. The third reason for the high fuel consumption of automobiles: oxygen sensor. As the internal control unit of the car, the oxygen sensor is mainly used to monitor the engine oil and gas ratio, and once it is damaged, it will cause the engine oil and gas ratio to be out of balance, and the fuel consumption will inevitably increase abnormally, after the oxygen sensor is damaged.

When the vehicle is driving, the exhaust pipe will exhaust a darker exhaust fume. At this time, the oxygen sensor should be replaced as soon as possible.

4. Reason 4 for high fuel consumption of automobiles: a control unit of the engine. Although the engine's electronic control unit is highly reliable, it is inevitable that it will fail in those cars that have been used for a long time.

If one of the control units fails, it is likely to increase fuel consumption, accompanied by poor dynamics and dark exhaust gases.

This may be because your car has a very large displacement, and then pretend to be and your driving habits are not good, always slamming on the accelerator, or slamming on the brakes to return to Kai or frequently stepping on the accelerator, frequently stepping on the brakes, and turning on the air conditioner, fuel consumption is not usually large.

Due to the inter-city driving in Pitan Cave, the traffic flow is large, the state of the car is unstable, and when there is a vehicle in front or a passer-by in front, you need to step on the brakes, and there will be idling and waiting for the red light to burn the core, which will increase fuel consumption.

This situation is caused by a problem with your driving habits, always pressing the accelerator, and the fuel consumption will definitely be high.

Recently, the car has been particularly fuel-hungry for the following reasons:

1. If there is a problem with the electronic control system of the engine, the concentration of mixed gas is too large, which will increase the fuel consumption of the car. If the vehicle is in a cold start.

The reason for the increase in fuel consumption is that the electronically controlled engine has the function of cold start and concentrated mixture, which will increase the fuel consumption of the car.

2. Clean the throttle.

Resulting in high fuel consumption, because the throttle valve is not washed for a long time, the wear of the throttle valve and throttle arm increases, and after cleaning the throttle, the gap will become larger, and the fuel consumption will naturally increase. However, this situation will return to normal fuel consumption after a period of cleaning.

3. Engine carbon deposits.

Too much is a common cause of sudden increase in fuel consumption, and too much carbon will lead to insufficient fuel burning, so car owners need to clean up the carbon deposits regularly.

4. Ignition coil.

If there is a problem with the output high pressure, the ignition will not ignite, and the natural fuel consumption will increase.

5. Spark plugs.

It is mainly responsible for igniting the engine, which is equivalent to the heart of the engine, and its damage or aging will increase fuel consumption.

6. If the inside of the car injector is seriously worn or damaged, the fuel consumption will increase.

7. After the cooling system of the engine has problems, the engine temperature will be very low, the viscosity of the oil will increase, the resistance during mechanical operation will increase, and the fuel consumption will increase.

8. After the ventilation of the vehicle fuel tank does not work, the vapor of the fuel will leak, which will also cause the fuel consumption to increase. <>

Tips to save fuel

1. Reduce the load on the car.

The more debris you put on your car, the heavier your car will be, and your fuel consumption will increase. Therefore, in the process of daily car use, try not to pile unnecessary debris on the car, which can effectively save fuel.

2. Prevent the engine from running dry.

When the engine is running at idle rpm, gasoline consumption is slow, so if you are waiting in line or waiting for someone, try to avoid running the engine at idle rpm to effectively save fuel consumption.

Solution: Find a professional auto repair personnel to help clean up the carbon deposit, and check whether the spark plug needs to be replaced.

2. The fuel supply system is not smooth: check the fuel supply system, whether there is blockage or gas resistance in the fuel pipeline, whether the gasoline pump is working normally, whether the oil level height of the carburetor float chamber meets the specified requirements, whether the air filter is blocked, whether the exhaust system is blocked, etc.

Solution: It is recommended to dredge the fuel supply system.

3. Poor tire pressure of automobiles: Poor tire pressure is also one of the reasons for the decline of engine power, especially when the tire pressure is insufficient and the number of people is large.

Solution: Therefore, when the tire is inflated, it must be filled enough, and it should be filled according to the tire pressure gauge marked on the body.

4. Air filter blockage: air is one of the power of the engine, if the air filter is not cleaned in time for a long time, the lack of air volume will cause the combustible mixture to be too thick, so that the engine power will decrease; In the case of a vehicle with a turbocharger, the failure of the supercharger will also cause the engine power to be reduced or weakened.

Solution: It is recommended to clean the air filter.

5. In addition, the efficiency of the spark plug is reduced and the water temperature is too high; There was a knock in the cylinder; Reasons such as excessive oil temperature in the engine can also affect engine power.

Solution: It is recommended to go to a professional repair station for inspection and repair.

6. The car is added to the gasoline of poor quality (such as too many impurities such as mixture), which is also the reason for this failure in many cars, whether it is a new car or an old car. Because there are too many impurities in the gasoline composition, it is easy to cause the generation of carbon deposits, and it will also affect the blockage of the oil circuit, thereby causing the power to decline due to the unsmooth oil supply.

7. The working principle of the throttle valve is to control the air intake volume of the engine, and its opening angle has a standard value, if it does not reach this standard value, it will affect the abnormal amount of fuel injection, resulting in power decline or power instability.

Solution: It is recommended to clean the throttle valve by the way when carrying out car maintenance, and check whether the air filter needs to be replaced;

8. The function of the belt is to drive the engine, compressor, generator, and water pump to run the transmission, if the belt is aging and there is a phenomenon such as slippage or cracks, it will directly affect the power of the car.

Solution: During maintenance, you should also call the maintenance master to help check whether the belt is good.