What should I do if the engine alarm on the way? Do you call to ask friends and relatives or call for rescue? In fact, it is nothing more than these two options, but the difference is that the owner needs to determine whether the car can continue to drive, and can drive to the maintenance plant. If the owner cannot judge that delaying home, it will bring economic losses. Can the engine alarm vehicle drive?
1. Aspect of intake
It must be satisfied if you want to work normally: the throttle door is normal, the intake flow sensor (intake pressure sensor) voltage Normally, no air leakage, and there are some engines such as the length of the airway controlled by the airway (generally the engine are not easy to appear) without divorce. If the throttle opens is abnormal (carbon accumulation, dirty), the engine speed will be high and low, but there is no feeling at high speed. If the intake flow sensor (pressure) fails, it will not only occur in idle speed, but also appear back to fire and accelerate weakness. The engine will report to the police as soon as possible. As for the problem of turning the overturn, it is mainly manifested in accelerating weakness at high speeds. After a hot car cycle, the engine may call the police. There is also a leak that is not to mention. When the air is leaking, the engine will not report to the police immediately. Instead, it will be difficult to check through the alarm of the oxygen sensor until the correction value is exceeded.
2. In terms of ignition
This is a bit far -fetched, because it will also involve fuel injection mouths. These three parts are spark plugs, fuel injection mouths, ignition coils Essence Spark plugs produce electric sparks to ignite flammable mixed gas. The ignition coil is a high -pressure auxiliary spark plug ignition. The fuel jet mouth is sprayed in the cylinder based on the control unit pulse signal. In general, these components are not easy to occur. The energy of spark plugs weakens. When the gap is too large, it needs to be replaced, or the spark plug work needs to be cleaned normally. The oil jet mouth is rarely damaged and oil leakage. After all, it is a precision part. Most of the problems with the ignition coil are the problem of aging. Once there is a problem with the three small components of the intake, it seems more direct. The engine directly alarm and then the car starts to lack the cylinder, and shakes violently.
3. In terms of combustion
Burning feedback is actually the problem of tail gas, and it is also an emission problem. The components that directly affect the emission problem are ternary catalysts. At present, we are also clear about the environment in which we live. The haze is already unknown. The problem of automotive exhaust emissions is a big problem. As a driver, we should pay attention to it. Under normal circumstances, the normal work of the ternary catalyst can meet the emission problem, but the engine cylinder pressure is not enough, or the engine pulls the cylinder, the internal seal is not tight (valve, the spark ring). The role of the meta catalyst will be minimized, and the emissions will not only exceed the standard, but also damage the three yuan. The ternary catalyst can discharge car carbon monoxide and HC hydrocarbons from car tail gasHarm gas such as NOX nitrogen oxide transformed into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. Its working conditions are directly related to the discharge of the car, so the oxygen sensor is needed to monitor its state. Especially at the time of cold start, the three yuan catalytic work temperature cannot be reached. At this time, the highest emissions are the highest. Some manufacturers have a secondary air pump to solve this problem to assist the three yuan catalyst into the working status as soon as possible. The oxygen sensor is divided into anterior oxygen and post oxygen. The anterior oxygen sensor can form a closed -loop control through the combination of the air flow, and the real -time dynamic control of the engine\'s fuel injection amount is maximized to the purpose of oil -saving and emission reduction. The probability of pre -oxygen failure is high, and the detection and detection are more complicated.
4. Water temperature
There is a separate water temperature alarm prompt on the general instrument panel, but the height of water temperature has a great impact on the engine. About 30%of the heat generated by the engine work will be converted to the temperature of the coolant, and heat dissipation through the radiator. The engine overheating is extremely unfavorable to the engine burning. The temperature of the cooling fluid is too high internally. Cooling liquid does not reach the working temperature (too low), resulting in an abnormal wear or loss of the normal working temperature, which will increase the engine, which is extremely harmful to the engine. Similarly, the impact of poor burning oil and poor combustion on the exhaust. Therefore, the effect of coolant on the engine is great.
Summary: There are too many small components that can lead to the engine alarm, because the engine light alarm is a wide range of tips, and it cannot be determined by the engine alone, or even the transmission problem Essence Of course, the above points are very intuitive, and the direct reason for the engine alarm is relatively easy to understand. At least the owner can hear why the car owner can understand why the engine lights are on when the car repairer told you the car.
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