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List of the contents of this article:

• 1,casino plus free 100 What is the difference between a high-speed engine and a low-speed engine?
• 2, Is the low-speed engine very fuel-consuming?
• 3, Is the lower the idling speed of the car engine, the better?

What is the difference between a high-speed engine and a low-speed engine?

Analysis of the difference between high-speed engines and low-speed engines: the difference lies in the cylinder diameter and piston stroke: because the piston stroke of high-speed engines is very short, and it can only reach high speed when it is short, its cylinder diameter is slightly larger.

Cars with high-speed engines start slowly, drive fast on the highway, and perform weakly when going uphill. Cars with low-speed engines start faster. When driving slowly on the highway, they will perform more energetically when going uphill. Therefore, there is also a difference in the rotational speed of the maximum output power and torque of the two engines.

But these different definitions are almost the difference between high-speed engines and low-speed engines that are generally not available: the difference is the inner diameter of the cylinder and the piston movement stroke.Generally speaking, the inner diameter of a high-speed engine must be slightly larger. The reason why it is large is that the piston stroke is short, and it must be short to achieve high speed.

Is the low-speed engine very fuel-consuming?

1. The fuel consumption of low-speed engines and high-speed engines is very low. If you want to improve fuel consumption, you need to control the optimal speed. Generally speaking, when driving, the engine speed of the electric injection vehicle is between 2200-2500, and the fuel consumption is highest. In any gear, the engine speed should be kept between 2200-2500.

2. Driving at low speed for a long time causes insufficient combustion of the engine, resulting in serious carbonization of spark plugs and throttle valves. Cars driving at low speed also consume a lot of fuel. Generally, you need to replace the spark plugs, clean the throttle valve and electric nozzle after driving 5,000 kilometers, which consumes a lot of gasoline.

3. Both high-end low-speed and low-gear high-speed are relatively fuel-consuming, and will also seriously wear the engine and clutch. High-end low-speed may cause the engine to shake during driving, which is because the output power of the engine cannot meet the load requirements, but This kind of shaking will not cause damage.

4. At low speed, it is the most fuel-consuming, and the small displacement is also 15 or 6 oil. The fuel injection per unit time may not be large, but the speed is slow. As soon as it is divided, the ratio is high. Especially when starting, low-speed driving is also very harmful. Long-term low-speed driving is relatively harmful to the car.

5. First of all, when the electric injection engine slides with gear, when the speed exceeds the preset value, the fuel supply is automatically stopped (the fuel consumption is zero). The preset value of each engine is different, generally at 1200~1500 rpm u002F.Therefore, it does not step on the accelerator when sliding with gears. It does not consume fuel at a speed of more than 1500 runs, while it consumes fuel at a speed of less than 1500 runs.

Is the lower the idling speed of the car engine, the better?

1. It is not difficult to see that although the idling speed of the car is low and good, the current technical level does not support us to do so. Compared with the more fuel it consumes, the price of the engine and its own driving experience are more important, so more people will choose to increase the idling speed.

2. Diesel cars are best between 400 and 600, which varies depending on the model: too low idle speed will damage the engine, which will cause poor oil supply in the lubrication system, and the oil pressure is too low, causing early wear of the engine; the lower the idling speed of the engine, the easier it is to shut down.

3. Under the condition of stable operation of the engine, the lower the idle speed, the better, because the engine consumes very low fuel at this time. However, considering the reduction of emissions, the idle speed should not be too low. When the idling speed of the car is less than 600r/min, the idling speed of the car will be significantly reduced, which is said to have a bad impact on the engine.

4. In general, in the normal range, the lower the idle speed, the better the engine is, but this is not the only criterion for judging whether the engine is good or bad.

5, "Related introduction: Personally, I think it's better to lower the idling speed of the car engine. Reference: The engine has been developed for more than 100 years, and idling speed is still necessary in most cases, and it requires a certain speed, not the lower the better.