The EFI system cannot be warmed up for a long time[汽车维修知识]

For a new car, running-in is particularly important. It can make our car have a more stable and healthy state in the future. But there are some small details in the running-in period, we still have to pay attention.

During the running-in period of the EFI vehicle, the vehicle speed should be repeatedly changed between low speed and high speed.When running in, the speed should be every hour20value="90" HasSpace="False" Negative="True" NumberType="1" TCSC="0">-90kilometerChange between, occasionally more thanvalue="90" HasSpace="False" Negative="False" NumberType="1" TCSC="0">90kilometer, But the time should not be too long, it is also good for the engine. The purpose of this is to allow the engine to be run-in at various speeds, so that its components can be fully stretched to achieve a balanced performance.On urban roads or loops, the speed should not be too conservative. For safety reasons, the maximum speed of some cars is rarely exceeded.passvalue="90" HasSpace="False" Negative="False" NumberType="1" TCSC="0">90kilometer, So the speed is not fast, especially in summer, the air volume of the front air inlet is not large enough to be cooled sufficientlyWater tank, Resulting in a high water temperature, which forces the electronic fan to start. After starting for a period of time, the water temperature drops, the electronic fan stops, and then the water temperature rises again, causing the electronic fan to start repeatedly, which will increase the engine load, increase fuel consumption and shorten the service life of the electronic fan. The correct way is to maintain a certain speed, use more natural wind for cooling, and reduce the starting frequency of the electronic fan. Low-displacement cars should use less air-conditioning systems in summer. Cars should be kept under full load as much as possible. Use lower gears when encountering uphill roads. Don't accelerate quickly during driving, and try to avoid bad habits such as emergency braking.

In addition, I will also specifically mentioncar"Preheating".First, when the EFI car starts, you should first turn the key to the second gear and wait5-10After the key door is opened, the gasoline pump is turned on to adjust the oil pressure and fuel injection volume. Therefore, restarting after a few seconds will affect the car’smotorAnd the engine is good. After getting in the car, most people are accustomed to letting the engine run at idle speed, waiting for the water temperature to reach normal temperature before driving away.This method of preheating is actually very wrong, because the EFI engine is not likeCarburetorThe engine, before reaching the operating temperature, the fuel supply system can not work normally, at this time, if you barely drive, it will naturally appearRotating speedInstability, flameout, etc., so preheating the carburetor engine at idle speed is a last resort. However, if the EFI engine adopts a long-term preheating, it is not only unnecessary but also harmful.Shorten the warm-up time can be extendedThree-way catalytic converterThe service life of the gas can also increase the conversion rate of pollutants in the exhaust gas, and also save fuel. Therefore, the correct way is to start the car as long as the engine can maintain a stable speed after the engine is started. Before the water temperature rises, properly control the speed of the car, and then you can drive normally after the water temperature is normal.

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