Diesel fuel in a gasoline car: overhaul is inevitable?
Answer to the question “What happens to a gasoline engine if diesel fuel is poured into it?”, probably, 99.99% of motorists will not cause difficulty *.
* True, it’s worth making a small digression that there are 0.01% of “witnesses of the miraculous diesel fuel” (I personally saw the threads on the forums), where inexperienced motorists seriously argue that if you pour diesel fuel into a gasoline engine, it will become . So they wrote, they say, advise, is it true or a myth that if I fill my gasoline-powered car with diesel fuel, it will consume less fuel? This is what local jokers advised them ... Horror is simple!
For everyone else who is friends with logic and perfectly understands what such experiments can lead to, it is obvious that such an execution will obviously not be good for a gasoline engine. Only one question remains to be answered: will the consequences be catastrophic? Here the opinions of the autobrothers are clearly divided.
One part will assume that the engine will instantly stall or the car will simply not start. Others will say that the car will theoretically be able to drive some distance, perhaps even continue to work on diesel fuel, but the consequences will be so catastrophic that it will be necessary to flush not only the fuel system, but also “capitalize” the engine. Still others will probably put forward a neutral version, something in between... and so on and so forth. There can be many opinions. But what will actually happen?
In order to find out, we turned to knowledgeable people and to numerous Internet portals competent in matters of motor skills.
The first thing the mechanics warn about: gasoline and diesel fuel are combustible mixtures that are completely different in their chemical structure. If gasoline consists of light hydrocarbons, the main feature of which is easy ignition (not for nothing that gasoline engines use electric spark plugs that ignite a mixture of fuel and air), then diesel fuel will simply be impossible to ignite from a spark. And it's easy to check.
Anyone who has a house in a village or in a dacha has probably come across such a situation: you need to light a fire from the tops collected the day before. The weed has not completely dried out yet, and there is no time to wait for the “weather by the sea”. In order for the fire to start, you need a catalyst. As a "dope" you can use kerosene or gasoline. It is enough to irrigate the organic matter a little, strike a match and, from a safe distance, throw it onto a surface moist with fuel. The result will be instant: the combustible mixture will instantly ignite, and things will go like clockwork.
But it happens that only diesel fuel is at hand. Experienced people know that they will have to tinker with it for some time to set it on fire. And when the fire nevertheless spreads to diesel, it will spread slowly over the wet surface, gradually capturing the entire area of \u200b\u200bthe future fire.
The same will happen in a gasoline internal combustion engine with the only important difference - technically the process will be somewhat more complicated.
Let's take a look at what happens when you fill a gasoline engine with diesel fuel.
1. It won't be easy for you to do this. The diesel “pistol” at the gas station is wider in diameter than its gasoline counterpart (the diameter of the diesel “sting” is 25 mm, the diameter of the gasoline one is 21 mm), that is, it will be impossible to place a “diesel” hose into the filler neck of a gasoline car tank. Or rather, it is almost impossible, because for any cunning lock there is a scattered “cracker”, and it is not for nothing that, according to statistics, every year thousands of people manage to fill their cars with the wrong fuel.
Therefore, if the sting does not fit into the neck, this is a clear sign that you have mixed up the hose. Stop and double-check if there is a “DT” written on the gun.
2. If you still manage to fill the fuel, the following will happen:
Even if the fuel in the gas tank was at a minimum, the engine will work for some time. It will start, the car will even drive away from the gas station, but at that time an irreversible process of mixing two types of fuel will take place in the gas tank, or rather, one - denser (DF) - will fall, and gasoline will float to the surface. The fact is that diesel fuel is a heavier fraction, and it will begin its journey to the lowest point of the gas tank, from where foreign fuel will begin to flow into the engine through a mesh fuel supply pipe using a gasoline pump.
