There must be something you don't know about the car knowledge book!

Car maintenance knowledge you know how much, the following is a fusion of car maintenance, driving knowledge and other popular knowledge, quickly see what you know?

A. Driving skills

Car power transmission, first from the engine to the transmission, and then from the drive shaft to the drive wheels, so that the car forward, the amount of power output, depending on the magnitude of the throttle pedal. From the point of view of fuel saving, to achieve the fastest speed with the minimum power output, you will have the highest efficiency.

1, light fueling, light braking, early braking in the driving brake, hard start, slamming on the gas pedal is a big taboo to save fuel.

The fuel saving test shows that it is 2 to 3 times more expensive to step on the accelerator than to drive at medium speed. Therefore, you should reduce the throttle range under the premise of ensuring the normal driving of the car. When you see a red light coming on or when you enter or leave the highway, you can apply the brakes lightly in advance to slow down and use the remaining engine power to let the vehicle glide forward.

2、Shift timing and gear selection

Shift timing as far as possible to choose between 2500-3000 rpm, so as to ensure the power supply under the premise of getting better economy. To eliminate the low gear high speed, driving a manual transmission car, after the speed stabilization should be promptly shifted to a high gear; and driving an automatic transmission car, should try to avoid using the "sports" mode. In addition, manual transmission users should eliminate the high gear start.

3、Warm up the engine and then accelerate

Engine running at low temperature is more fuel-efficient than running after the temperature rises, so do not accelerate immediately when you first start, but should slow down for a few minutes to let the engine warm up before accelerating.

4, grasp the vehicle's economic speed

Economic speed refers to the most fuel-efficient driving speed, various models of economic speed varies, to read the vehicle manual carefully, but roughly will be in the 70-90 km / h or so. Below or above this speed, fuel consumption will rise.

5, pay attention to the new car break-in period

The correct driving method during the break-in period will have a great impact on the fuel economy of the engine in the future. Therefore, be sure to keep in mind that the speed does not exceed 80 kilometers per hour, the speed does not exceed 4,000 revolutions and other thunderous driving principles of the new car break-in period, do not break the rules.

6、Rational use of air conditioning

When the temperature is suitable, when the speed is less than 60 km/h, you can open the window to ventilate without opening the air conditioner, or only use the ventilation function of the air conditioner without its cooling function, so that the air conditioner compressor will not start, thus saving fuel. However, at speeds higher than 90 km/h, it is not recommended to open the windows, because the air resistance at this time is very large, open the air conditioning instead of more fuel-efficient.

Second, maintenance

Regular maintenance of the car is very important. If the tires are deflated, the spark plugs are worn out and the air filter is clogged, it will cause gasoline depletion.

1、Check the tire system

Insufficient air pressure will increase the friction between the tires and the ground and increase gasoline consumption, so check the tire pressure frequently, different models and tires have different air pressure standards. In addition, if the tires are badly worn, there will be slippage and will increase fuel consumption, so replace the tires if necessary.

2、Check the brake system frequently

Some cars will have a slight dragging brake, including hand brakes, which is equal to increasing the load of the car when driving and will increase fuel consumption, so check it regularly.

3、Reduce the load

Statistics show that each additional 1 kg of load will increase fuel consumption by 1%, so try to reduce the unused clutter in the trunk.

4、Regular maintenance, replacement parts

Air filter, gasoline filter, oil filter, etc. need to be replaced every 5,000 kilometers or more, because the air filter blockage will cause a reduction in air volume, resulting in inadequate combustion of gasoline, reducing fuel efficiency. Clutch disc, clutch pressure plate wear, spark plugs used for too long, there will be increased fuel consumption, so it should also be replaced regularly.

Third, driving knowledge misconceptions

1, put in neutral gear can save fuel

The early carburetor car in neutral can save fuel, but now we use the EFI car is not. Because some cars release the throttle in the acceleration, the injection system to stop the fuel supply, when the engine speed down to 2000 rpm to resume fuel supply, so the EFI car will save fuel when coasting with gear at high speed, put in neutral instead of fuel.

2、The higher the octave value of gasoline, the better

The applicable gasoline for each model of car is generally marked in the manual. Now many car owners tend to think that the better the oil, the better for the car, but in fact, it is not. The use of higher quality oil than the requirements of the vehicle itself is not only expensive, and will also have a negative impact on the engine.

3、Long idle time

Fuel saving test proves that the fuel consumption of the engine idling for 3 minutes will allow the car to travel 1 km. Therefore, if the stalling time exceeds 1 minute, turn off the engine. But the fuel consumption of restarting is often 20% more than normal driving, so short time parking should still choose idling.