Difference between Michelin 3ST and 4st
Different drainage performance, different rubber formula and different safety. The drainage performance of 4st is better than that of 3st, and 4st also adopts a brand-new formula.
Tire is the only part of the car that touches the ground, which is very important for the driving stability and safety of the car.
Tires are rubber products, which will age after long-term use and need to be replaced regularly.
Drivers are advised to change their tires every four years. If the mileage is short within four years, they also need to replace it, because the tires used for four years will age.
Tire pressure is also important for tires. Tire pressure should not be too high or too low. Too high air pressure will reduce the contact area between the tire and the ground, thus reducing the grip and affecting the maneuverability.
If the tire pressure is too low, wave deformation will occur when driving at high speed, which will increase the probability of tire puncture.
It is suggested that drivers and passengers often check the tire pressure when using the car, and also check whether the tire surface is damaged.
Be sure to check the tires in advance before driving on high-speed and long-distance sections.
If the tire is eccentric, it is because the data of four-wheel alignment is inaccurate, and riders need to do four-wheel alignment again.
What does Miller cycle mean?
The principle of Miller cycle is the same as Atkinson cycle, but it is called Miller cycle for patent reasons.
In fact, most people like to call Miller cycle Atkinson cycle.
Ordinary gasoline engine is Otto cycle, which has four strokes when working, namely intake stroke, compression stroke, power stroke and exhaust stroke.
Atkinson cycle makes the working stroke longer than the compression stroke, and the expansion ratio of the engine is greater than the compression ratio of the engine, which can improve the efficiency of the engine and reduce the fuel consumption of the engine.
Atkinson cycle engine can only be seen in some hybrid vehicles, but Atkinson cycle engine is rarely used in pure gasoline vehicles.
Atkinson cycle engine has insufficient power at low speed, which is very suitable for hybrid electric vehicles.
Hybrid electric vehicles can rely on electric motors to provide power when driving at low speed.
When the engine is at a low speed, the motor can also drive the wheels together with the engine, so that the driver will not feel lack of power.
Mazda's blue sky technology uses Atkinson cycle, while Mazda's engine uses Atkinson cycle under certain working conditions, and does not use Atkinson cycle under certain working conditions.
If you are interested in Atkinson cycle, you can try the Atkinson cycle engine car. What's the difference between Michelin 3ST and 4st? What does Miller Cycle @20 19 mean?