I believe that 99% of car users will know from all kinds of old birds: the new car should run slowly, and when free, go to the high speed to pull up and turn to clean up the carbon deposits.
So the rider continued to ask: usually pull upRotating speedDid it hurt the car?
Lao Niaohui: Master the timing of the 2000 shift to master the manual block cheats.
But the fact is that high speed hurts the engine? Is this true?
There is also a manual mode that makes people excited
Insufficient fuel combustion, excessive fuel impurities, poor engine oil sealing and high temperature, these conditions will lead to the production of carbon deposits. When the ratio of oil and gas is too high (rich), the fuel cannot be completely burned and carbon deposits are generated. Compared with diesel engines, gasoline engines always limit the air flow when they work. Simply put, they are always held back when inhaling. Imagine breathing in with the mouth shape when you whistle. ECU according toThrottleOpening oxygensensorWait for the equipment to detect the air intake, and then calculate the most suitable air-fuel mixture ratio according to the current working conditions (cruise/acceleration/sudden acceleration, etc.), and then inject the fuel according to the amount. It can be said that the fuel injection volume at each moment is accurately calculated.
Non-direct injection models need to inject fuel into the intake port to obtain a mixture of oil and gas. This process cannot ensure that the mixture of oil and gas is completely uniform, resulting in incomplete combustion.PastCarburetorModel fuel injection accuracy and HyundaicarIt's incomparable. Too low speed and too rich fuel should also be avoided as much as possible. When it comes to real cars, there is no need to worry about these things. Less than one hundred thousand and two hundred thousand kilometers will not have a significant impact. So everyone can drive boldly with confidence. Whether it accumulates carbon or not is a long-term matter.
Is it true that pulling at a high speed to clean up carbon deposits?
I often hear a lot of people say "pull the high speed to clean up the carbon deposits", and then go to the 6th gear on the high speed to clean up the carbon deposits like this. But in fact, what really means to increase the speed is that when the third gear is 3500 rpm, it can be regarded as "low gear and high speed" in the true sense.
Professional racers can complete gear shifts in half a second
For fuel impurities, generally long-chain hydrocarbons, due to slow combustion and greater viscosity, and failure to discharge with the exhaust gas in time, components will adhere to them when they encounter high temperatures.The more typical is to enterValveCarbon deposits (non-direct injection engines). The valve opens when the intake is in, and the surface temperature of the valve is still high. The gasoline naturally enters the cylinder, but impurities will adhere to the back of the valve.The valve lift is small at high speed, and the valve lift is large at low speed. The effect of valve opening on carbon deposit is not certain, butSpark plugNearby, there is no problem with the breakdown of oil and gas during ignition. The discharge area at the top of the spark plug is not lucky. The residue after the burning of impurities adheres to the discharge electrode, and carbon deposits are formed over time.
The main cause of the formation of carbon deposits due to poor oil seal is the valveOil seal, The seal between the valve and the cylinder,pistonBetween the cylinderPiston ring(Gas ring oil ring) seal. The impurities that are washed off by the engine oil and engine oil are formed when exposed to high temperatures. No amount of vicious words can express my resentment against them. Among them, the valve oil seal is relatively easy to replace, and the other two are more dependent on the engine design and the attitude of the engineer. The wear of various parts of the car is inevitable, but the engineers with attitude have thought about it for you. After the wear, the clearance, tolerance, accuracy, fit, etc. can still continue to work without pressure, at the cost of losing a little power.However, the engine of less than 100,000 kilometers is actually not a worn-out one. The engine of 300,000 kilometersBenzIt is stress-free to change the seal to overtake 140 at high speed. It is acceptable for engine oil to burn in the cylinder. After all, most of it can be taken out of the cylinder together with the exhaust gas. Burning engine oil is also known as blue smoke.
How to solve?
Do maintenance on time and occasionally do special cleaning is enough, maintenance and replacement of spark plugs on time. Yes, fuel additives are basically powerless.
Ferrari 360 Modena V8 engine structure
Which of the low gears and high speeds or the high gears and low speeds hurts the engine more?
Simply speaking, these are just two normal operating conditions, and no one has a greater negative impact on the engine.
According to the domestic driving habits of 2000 shift gears and frequent traffic jams, such a high gear and low speed for a long time does have a negative effect on the engine, but this kind of negativeness will not hurt your muscles, bones, oil leaks, and the like. To put it simply, there are generally two operating conditions for high gear and low speed. One is cruising at high speed. There is nothing to say about it. It is fuel-efficient and economical and the speed is generally around 2000 rpm, which is completely fine.
The other is high gear and low speed at low speed but want to accelerate rapidly. People who use manual gear will encounter this situation. Whether they are too lazy to downshift or have no reaction, the engine will make a very unpleasant sound when the speed is around 1500 full throttle. It is often accompanied by a slight vibration, and then the speed slowly rises to 2500, then the power will keep up. In this process, the oil-gas mixture ratio has always been high, which indulges the generation of carbon deposits.
Followed by low gear and high speed. 2500 to 3000 conversion gear I think this should be very popular. The fuel consumption is not as ridiculous as everyone thinks, but in exchange for a more comfortable driving experience, sufficient power at all times will take you away from the dangers on both sides. Gasoline engines below 4000 rpm are completely normal and no problem working conditions, more than 4000 is actually no problem, but it will always be distressed.The only biggest problem is that the gear is too low and the speed is high.Transmission systemImpact, such as 4000 rpm in the first gear, when you lower the throttle, you’ll slam on itbrakeThe same, but this is all within the scope of the design, you really don't have to worry about it.
The 8000 rpm on Toyota's lowest-end Yaris tachometer is really not for decoration
The real damage to the engine body is the temperature cycle of the material. That is to say, the engine warms up and then cools down and then warms up, this is the culprit of the life loss.
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