A friend said, "Why do cars age so fast?" When I bought a car, I was very oily. If you feel flattered, you can brag to others. After several years, how come the fuel consumption is 15? What the hell? Is it really old? Or do we ignore some places? If we handle them properly, maybe the fuel consumption will come down.
Low tire pressure will increase fuel consumption.
1 It's as simple as that. What is this? I forgot to pump up. That's tire pressure.
Michelin shared a data: the normal tire pressure loss is 0.07bar/ month. After a long time, the tire pressure naturally becomes lower and leaks, which is easy for everyone to understand.
The lower the tire pressure, the greater the contact area between the tire and the ground, and the greater the resistance.
Su Jing of Jilin University has a paper "Research on tire pressure estimation algorithm based on wheel speed characteristic analysis".
When the tire pressure is 35% lower than the normal tire, the fuel consumption per 100 kilometers increases 1 to 3 liters.
Originally, the fuel consumption of 7 oil per 100 kilometers was already 9 oil 10 oil. Do you still want to repair the car? Do you want to do maintenance? Actually, it's not very encouraging.
And too low tire pressure will increase the risk of puncture, so I feel high fuel consumption. Let's solve it first ... do the cheapest and simplest thing.
Don't always think: my car is terminally ill and doesn't have to be repaired.
Dirty air filter will affect air intake.
What is the second thing that is easy to ignore? Air filter element.
The air filter is actually the mask of the engine, which should be replaced regularly.
Gu et al. said this in "Quality Analysis of Air Filter Products".
Once the air filter absorbs too much impurities, the engine will have insufficient air intake and incomplete fuel combustion, which will lead to unstable engine work, decreased power and increased fuel consumption.
We change our masks every day, don't we? Car masks will only be changed once every few months or even half a year. If it hadn't been changed at that time, it would have been banned, wouldn't it?
If the driving environment is poor and the wind and sand dust are heavy, it is also good for the car to replace the air filter used in the car in advance.
Don't think that every time you repeat it, the owner blows away the dirty things and can use them again. Nobody changes them these days. Pay attention.
More carbon deposits will also increase fuel consumption.
The third point that is easily overlooked is carbon deposition.
Yang Qi said this in "Research on Control and Evaluation Methods of Engine Carbon Deposition".
With the increase of vehicle mileage and service life, carbon deposition will occur after the gasoline engine runs for 30 thousand kilometers (or 24 months), which will lead to problems such as increased fuel consumption, insufficient power and idling jitter.
Especially in this city, there are frequent traffic jams, stop-and-go and idling engines. It won't take that long at all Carbon deposition started long ago, and fuel consumption began to change. How to do it?
In the previous paper, Yang Qi also compared six common methods to clean up carbon deposits. After testing, the comprehensive effect of disassembly-free cleaning method and scientific addition method is better.
Disassembly-free cleaning is cleaner and the price will not be too low. Moreover, the operating technicians are required, and non-professionals are not recommended.