Does a winter car need a hot car?

During the cold winter months, the temperature can sometimes be as low as a few degrees below zero. At this time, small ice sheets may hang on the bottom of cars parked outdoors or indoors. Many car owners worry that freezing will affect the engine and choose hot cars. Is this reasonable? According to a statistic, the engine parts are worn out, and more than 90% of them are caused within three minutes after the cold vehicle starts. Therefore, the correct hot car is very important.

Slow jogging is the hot car:

Although hot cars are necessary, the method of idling hot cars in situ is actually not desirable. The reason is that in the cold car gear oil flow to the lower half of the gearbox, the solution is not a hot car can be resolved. Because the gearbox does not have a gear pump, only the engine of the local hot car is moving, and the rest of the car has not moved. Only after waiting for the actual road, it is slowly moving for a while to improve the situation.

Most cars today are EFIs (EFI, the computer-controlled gasoline injection system - EFI, which is eco-friendly and energy-saving, and can improve the performance of car engines.) Different from the old-fashioned carburetor models, EFI The vehicle oil supply system is completely controlled by the ECU module of the engine. Its control system is not affected by the air flow rate and temperature. As long as the oil pressure rises, the water temperature can reach around 50 degrees Celsius. The correct hot car method should be: 30 seconds to one minute after the start of the road, the vehicle will continue to slow down.

Disadvantages of hot car in situ:

First, idle speed will produce a large amount of exhaust gas. These exhaust gases are poisonous and harmful. Adults who inhale for a long time will have an impact on physical health. They have physical and intellectual effects on underage children. Therefore, it is okay to bring children to an underground garage. Go to the underground garage and don't stay too long. If the underground garage is not well ventilated, these exhaust gases will accumulate in the car. If your car has an outside circulation and air is passed into the car, a long time will be detrimental to the body.

Second, the in situ hot vehicle efficiency is not high, the purpose of the hot car is to make the engine parts have oil lubrication, and one is to allow the parts to reach the appropriate operating temperature. In-situ hot cars have too slow a rise in the engine's water temperature, and slower normal driving can make the water temperature reach the operating temperature faster.

After the editorial: Xiao Bian described above is for most models, and some models can be operated according to the requirements of the manual or the 4S shop.