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Engine preheating is Binance download iOSa preparation that every driver must do before driving. Correct engine preheating can extend engine life, reduce failures, improve fuel economy, and ensure driving safety. Next, this article will introduce in detail the correct method of engine preheating. I. What is engine preheating? Engine preheating refers to heating and operation for a period of time before the engine starts, so that the temperature of all parts of the engine is uniform and the lubrication system can work normally, so that it is easier to start the engine to ensure the normal operation of the vehicle. II. Why should the engine be preheated? First of all, after the engine stops working, the heat will be lost, resulting in a drop in the internal temperature of the engine. If it is started directly, it will cause the temperature to rise suddenly when the engine is running, causing hot expansion and cold shrinkage problems, and it is easy to damage the engine.And the engine preheating can gradually increase the engine temperature, make the temperature of the engine parts uniform, and provide the best conditions for the next start-up. Secondly, oil pressure will be generated at the start-up, and the high viscosity of the cold oil, insufficient oil pressure, and incomplete lubrication may cause wear and even damage to all parts of the engine. And the preheating of the engine can promote the lubrication of the oil and improve the lubrication effect of the engine. Finally, engine preheating can also improve fuel economy, because during cold start, the engine needs more fuel to start, resulting in increased fuel consumption. And engine preheating can raise the internal temperature of the engine to a suitable level before starting, reducing fuel consumption. III. How to preheat the engine? 1. Preparation Before the engine is preheated, it is necessary to check the water cooling system of the engine to ensure that the waterway is smooth, the coolant in the water tank is sufficient, and the coolant quality is excellent.At the same time, check whether the amount of oil and the quality of the engine meet the requirements. If there is a problem with the quality of the oil, it should be replaced in time. Two. Before ignition and preheating, please pay attention to turn off all electrical load equipment, including interior lighting, audio, air conditioning, etc. In order to reduce the consumption of battery energy and provide sufficient starting energy at startup. Then insert the key into the ignition switch, turn it to "ACC" gear, and wait for a few seconds to start the electromechanical equipment. Then, turn the ignition switch to "ON" gear, but do not start the engine immediately. If the on-board thermometer indicator is low, you can let the vehicle run for 3 to 5 minutes first to fully heat the engine and the battery to ensure that there is enough electricity to start the engine. 3. When the on-board thermometer indicates that the on-board thermometer is biased to "temperature", or the tachometer pointer of the engine is about 50%, it indicates that the engine has been preheated to the normal working temperature.At this time, the engine can be started. When starting, please keep the engine speed at the lowest gear and do not step on the accelerator in idle or idle. After the engine is successfully started, keep the low speed running for 1-2 minutes so that the oil can lubricate the moving parts. After the engine starts to warm up, you can open the window at the same time, ventilate and adjust the air conditioning equipment to an appropriate amount, etc., so as to further cool the air inside the car. IV. Precautions 1. Don't idle for a long time. Over-term idling preheating will lead to an increase in engine fuel consumption, and it is also easy to accumulate unburned grease in the exhaust pipe, resulting in difficulty in cold start-up and increased emissions. Two. Do not overload until the engine is fully preheated. When the engine is cold started, the liquid slip is unstable, and the parts are easy to wear out. At this time, it is not suitable for overloading.3. In extremely cold weather conditions, it may cause difficulty in starting the engine. At this time, the preheating time should be lengthened, and you can also choose to use auxiliary equipment such as heaters to reduce the impact of the cold environment. Generally speaking, engine preheating is a necessary step to ensure the safety of the vehicle and maintain the health of the engine. Every driver should master the correct method and follow the precautions. Only in this way can the vehicle run for a long time and be more stable, safe and fuel-efficient.

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