How to prevent automobile throttle from freezing in cold winter?

The icing in the throttle is mainly because the exhaust gas enters the intake pipe through the exhaust pipe and the exhaust gas recirculation system. After the vehicle is turned off, the high-temperature exhaust gas entering the intake pipe stays near the throttle. Because the throttle valve is mainly made of aluminum, it conducts heat quickly and cools quickly, so the cold air outside and the high-temperature exhaust gas staying in the throttle valve alternately form water droplets. When the temperature inside and outside the throttle valve is consistent, freezing will occur. Throttle icing mainly occurs in winter in the north.

Some drivers will unplug the exhaust pipe after the throttle freezes, so that the exhaust gas can be directly discharged from the car, and then reinstall the exhaust pipe in summer to solve the problem of throttle freezing.

The exhaust gas recirculation system reintroduces exhaust gas from the exhaust pipe through the intake pipe into the engine combustion chamber to participate in combustion, thus reducing the combustion chamber temperature and nitrogen oxide emissions. The exhaust gas recirculation system does not work when the engine is in a cold state, idling, low-load operation and the vehicle is started. If the exhaust gas recirculation system fails, the idle speed of the engine will be unstable and the emission of nitrogen oxides will exceed the standard.

Other vehicles should also change the appropriate grade of engine oil before winter to avoid starting failure due to excessive resistance when starting at low temperature. At this time, even if the battery starter is normal, it can't be started because the engine resistance is too large.

If the speed is enough when starting, but the vehicle is not easy to start, check the relevant oil circuits and circuits at this time. Sometimes the quality of gasoline is not good, and the departure time in the morning will be extended. When parking at night, try to choose a sheltered place, and try not to stop at the tuyere and other places.

Hot cars are needed in winter, and they have to be heated at idle speed. Idle hot car is the most serious time of carbon deposition on the accelerator, and there is no one; In fact, winter is more than the throttle, because the cooling water heats up slowly, and the engine is prone to insufficient combustion of mixed gas in a cold environment, resulting in a large amount of carbon deposition. In winter, it is especially necessary to reduce the short-distance driving and frequent starting of the car. If the car stops before it is hot, it will easily lead to a large amount of carbon deposition. Throttle carbon deposition will lead to unstable idling and jitter of the car, especially in cold winter. So pay special attention to the throttle in winter. Under normal circumstances, when the car is idling, the jitter increases or the idling is unstable, so it is necessary to consider cleaning the throttle.

It is difficult to start a car in winter, which may also be related to spark plugs. Spark plugs are the wearing parts of automobiles. If the spark plug gap is large or carbon deposition is serious, it will affect the ignition of the engine and the acceleration performance of the car. The poor working condition of spark plug directly leads to insufficient combustion of mixed gas, weak power of automobile and increased fuel consumption. Ordinary spark plugs need preventive replacement. For example, the service life of ordinary copper core spark plugs is less than 50,000 kilometers, and it is best to replace them after 50,000 kilometers. The service life of iridium spark plugs is about 80,000 kilometers, and platinum spark plugs can be used for 65,438+10,000 kilometers. Usually pay attention to preventive replacement according to the spark plug material.