Car gaga ring namely 'canister solenoid valve malfunction'

Car gaga ring namely 'canister solenoid valve malfunction' electromagnetic valve world net XiaoDeng times the car the car appear larger petrol, or puny acceleration easy flameout, deals with the cause of the problem we often see the word 'canister', and this kind of problem in a craigslist is sometimes appear, so 'canister' what device? What is the purpose? Which position it in the car, the vehicle to produce what kind of failure is related to? Above with many questions, let us solve 'canister' not familiar 'mystery', the principle of carbon canister and canister is affiliated to the gasoline evaporation control system ( EVAP) Part of the system is in order to avoid the engine shut down after the fuel was introduced by the steam escape into the atmosphere, and since years, our country requires all new car must have this system. First of all, let's see how it works, as shown in the figure below after the engine flameout, gasoline vapor mixed with fresh air in the tank and the storage in activated carbon tank, when the engine starts, in between the charcoal canister and intake manifold electromagnetic valve is opened, the activated carbon tank of gasoline vapor in the air inlet pipe under the action of vacuum were clean air into the cylinders to burn. Doing so not only reduce the emissions, but also reduce the fuel consumption. The canister is the key device in the system, collect and store gasoline vapor work is mainly done by it, as we human gallbladder is used to provide and store bile. Canister is actually a loaded there in assembly, it is usually made of plastic, is filled with vapor adsorption of activated carbon particles, the top is also used to control the number of gasoline vapor and air into the intake manifold of the cleaning valve, steam is used to purify gasoline filter, etc. Failure associated with carbon canister and note the following, let's take a look at what fault related to the carbon canister, and owners should pay attention to what details, in order to reduce the fault caused by evaporation control system, vehicle sound of idle running engine work, from time to time can hear the sound of 'man'. Encountered this situation don't panic, the first thing to do is to find the car canister solenoid valves, judging from the sound of 'man' is it, if it is that you don't have to ignore. Because, carbon tank solenoid valve throttle opening would produce the discontinuous switching action, so as to make a sound, which belongs to the normal phenomenon. And step on the gas car, the car oil flavour is larger, if meet with trample accelerator azole car and the car's petrol larger fault, this time should be pay attention to the carbon canister pipeline was damaged in the system. Gasoline vapor flow along lesions directly discharged into the atmosphere, causing the car petrol fumes. And if the pipeline leak, causing the air into the engine inlet is not fuel vapors, will cause the engine mixture too thin, resulting in sporadic azole car phenomenon. , engine idle speed is high and low and accelerate unable to if the engine starting, idling speed when the regular high and low and car speed, should pay attention to whether caused by carbon canister air inlet and the filter clogging. Because, at this time the air outside is not easy to enter the canister, tank lack of fresh air, when idle, under the action of vacuum suction inlet, adsorption on activated carbon tank of gasoline vapors drawn into the intake manifold, the oxygen sensor detects a rich mixture, then the engine control unit decrease fuel injector, at this time the concentration of the combustible mixture is less, leading to low idle someone who comported himself; And then, as a result of fuel injection quantity is reduced, oxygen sensor in the next cycle and detect the mixture too thin, so computer added fuel injection quantity and result in higher idle then, so there is a idle speed when the regular high and low. Therefore, appear this kind of situation, the car is timely check carbon tank inlet entrance was clear. , engine flameout or not easy to start at this time, should pay attention to check canister solenoid valve may lead to problems. If the solenoid valve has been closed, carbon tank of gasoline vapor will gather more more, eventually fills the canister, the rest of the gasoline steam can escape into the atmosphere, environmental pollution by waste oil. On the other hand, if the solenoid valve has been in the open state, the engine's inlet mixture have been in a state of enrichment, and also because the engine control unit before has not control canister solenoid valve work, also won't reduce the injection amount of instruction, this will cause hot mixture too thick to cause the engine flameout, and after the thermal ignition is not easy to start. , refueling shoulds not be too full or too fast owners should pay attention to the second point is that every time come on don't too full, when added to the fast full remember to slower. A full filling likely to cause pipeline into gasoline, charcoal canister system of the liquid fuel into the canister is not only the hazards of canister itself, but also along the pipeline flow into the inlet caused the spark plug 'drown', cause gas just stalling until the serious consequences cannot be started. And go too fast, if the expansion of the steam and petrol gas that comes too late release, can produce choke oil.