How to start before the Spring Festival, vehicle maintenance and heating

Now the sudden drop in temperature, "hot" has become the focus of discussion, in many people's minds, always think in the morning the car, car to idle in place to start the vehicle after a few minutes, so the vehicle most beneficial, in fact, the wear of engine parts, there are more than ninety percent of the proportion is in by three minutes after the car, let us discuss the necessity of how hot and hot.

How to start before the Spring Festival, vehicle maintenance and heating

Composition of engine lubrication system

First, let's first understand the lubrication system of the engine. The lubrication system of the engine is mainly composed of an oil pump, an oil filter, an oil radiator and an oil cooler. In the cold start, we are concerned with the oil pump. After the vehicle is electrified, the oil pump will start to work and transport the oil from the oil bottom to all kinds of friction surfaces.

Engine lubrication schematic diagram

When the engine works, many of the transmission parts are in a very small gap under the high-speed relative motion, such as crankshaft and main bearing, crank pin and connecting rod bearing, cam shaft and cam bearing, piston, piston ring and cylinder wall, the gas distribution mechanism and the transmission side gear pair etc.. Although the working surfaces of these parts are carefully processed, it is magnified to see that these surfaces are uneven.

Function of engine lubrication system

The main functions of the engine lubrication system are: lubrication, cleaning, cooling, sealing, corrosion protection, hydraulic and damping buffer.

And today's topic, mainly reflects the role of lubrication and shock absorption. The oil film is formed on the surface of the moving parts. The surface of the lubricating part reduces the resistance and wear, reduces the power consumption of the engine, and absorbs the shock to reduce the vibration.

Lubrication system of lubricating system

The lubrication system of the lubrication system mainly includes pressure lubrication, splash lubrication and regular lubrication. We will meet in the winter heating is to allow the engine to get sufficient lubrication oil to the friction surface on the pump, we must rely on the splash lubrication so that the engine can get sufficient lubrication.

Splash lubrication

Is the use of splash lubrication lubrication during operation of the engine moving parts flying up in the drop of oil or oil mist lubrication to the friction surface, it can be exposed under the cylinder walls, load lighter outside relative piston pin, sliding speed and smaller valve cam surface, tappet lubrication.

Why hot

After a long time the vehicle is parked, the oil inside the engine oil bottom shell, will flow back to the lower part of the engine so that in the long term is not used or overnight after winter, start the vehicle when the engine is in the upper part of the state, the lack of no oil lubrication condition, about 30 seconds after the war, the oil will be delivery to the engine the need for lubrication of piston, connecting rod and crankshaft parts through the pump operation and splash lubrication, but even if the engine is on the road, as long as you don't step on the accelerator racing, keep running at a low speed, the effect is the same and idle.

The working environment of the engine

Before reaching the working temperature, the engine is about 90-110 degrees away. Because of its low temperature, the fuel supply system can't completely vaporized the gasoline. When the gasoline is not vaporized and liquid is liquid, it is not easy to burn, so it will form carbon deposition.

Engine carbon deposition

The lubrication of gearbox gearbox is the most difficult and easy to ignore. Gearbox gear oil is the same as engine oil. When gear is cold, the gear oil will flow back to the lower part of the gearbox. Only when the vehicle moves up will the gear oil at the bottom be transported to the upper half of the gearbox because of the gear's operation, so that it is lubricated.

This is the reason why to let the car move, no gearbox gear pump, in situ hot only when the engine is in motion, the rest are in stationary state. This kind of situation can only be improved after a period of time for a vehicle to move.

Buick cares for cars and housekeepers. It reminds us that some drivers should shift gears to N gears to save fuel and drive gears at high speed or downhill, which is likely to burn the transmission. While the current slope needed to slide, the shift lever can be maintained in D sliding block, but can not make the engine flameout.

Is the right way

Place the idle hot car is influenced by temperature and idling, gasoline combustion is not full, easy to form carbon and fuel is not sufficient, easily lead to serious exhaust emissions exceed the standard, virtually increased three waycatalytic load.

The car is in the correct way, start the vehicle 30 seconds to 1 minutes after the road slowly, when not speeding up, should be maintained at a low speed, and control the engine speed at 1000 rpm, until the engine temperature rises to normal operating temperature, according to the daily driving habits.

The oil supply system of the electric spray car

Nowadays, the vehicles on the market basically belong to the EFI. Because the EFI vehicle is different from the old cars in the past, the fuel supply system of EFI is completely controlled by the ECU module of the engine, and its control system is not affected by the air flow rate and temperature. Therefore, as long as the oil pressure increases, the water temperature reaches about 50 degrees.

Tachometer for diesel vehicle

If it is a diesel car, some vehicles need to be added to the fire when it is started. The other diesel vehicles need to press the hot button 30--50 seconds to restart the vehicle, which is better to fire. The refueling door is just an old diesel car.