We all know why the engine of our car needs engine oil and we also understand how important it is to change it regularly. But what do you think happens if you start a motor that is completely devoid of oil? Look detailed video video about it.
In fact, the engine will start without oil and will even run for a while. But he will destroy himself very quickly in an exciting way.
On the left is a video with an engine filled with 10W-30 oil. On right, .
Watch another video clip, which was filmed with a thermal camera. This time, the author of the video blog shows us what happens to a cheap single-cylinder engine that has no oil to lubricate. For comparison, the author of the video also filmed with a thermal imager the operation of the same engine, but only with oil.
Don't forget to include subtitles and their translation
So how long did a single-cylinder engine run without oil before it failed?
Apparently, the experiment lasted approximately 15 minutes. It should be noted that after 15 minutes power unit failed without bursting and even clouds of smoke. But, nevertheless, given that the motor worked for a quarter of an hour without lubrication, it received some serious damage that did not allow it to continue working.
As a reminder, if the engine is not properly lubricated, all metal components in the engine damage each other due to high friction. As a result, without oil, the engine begins to destroy itself, due to heavy wear internal components.
Unfortunately, most likely, if the engine without oil had worked a little longer in this experiment, then we would have been in for a more amazing sight. Nevertheless, this video clearly shows what threatens the motor, which is missing.
What do you think - can the engine run without oil? What will happen to him? Will it knock right away or will it work a little more? Let's say you have a sump punctured. What should you do?
It must be said right away that the engine with these additives will work, but only on idle... At the stands of the suprotek and other engines are specially prepared. All rubbing parts in it are liners, rings are fitted with a perfect fit.
A small amount of oil allows it to rotate with minimal friction. But it will be impossible to drive such a car, as it will eat an unreal amount of oil.
Our team decided to repeat the suprotek experiment on conventional engine... Here's what we got.
An electronic perometer will help us for the experiment. With its help, we will measure the temperature on the block, crankshaft, see if there will be overheating and what will happen to the car if it runs without oil?
We drain the old oil from the car. For this, it is very convenient to use the device that you will see in the photo below.
Let's change oil filter and screw the crankcase plug back.
We fill in new oil and let it run a little in our engine.
We start the engine and let the new oil lubricate the engine. We are waiting for about 5 minutes.
We drain the oil, new oil, which of course we will reuse.
We proceed to dismantle the pallet, unscrew the protection on the box and dismantle the pallet itself.
Trying to start the engine. The oil lamp comes on immediately.
Let's take a look at the engine. It works without oil. So no suprotek is needed! Is it really cool?
There is actually one little trick. The engine doesn't quite run out of oil. The engine has an oil wedge that reduces friction.
Since the engine is warmed up, about once an hour a person comes up with a cup of oil and puts it to the oil receiver - the engine sucks in oil.
Accordingly, all parts of the engine are lubricated and it can work for about 30-40 minutes more. This cup trick is done by all manufacturers of synthetic engine additives. See the photo below.
All oils are based on a package of additives, which are balanced in this oil... Not a single global oil manufacturer will approve to fill in any additive there.
No one knows if this additive will precipitate or mix with the oil. On the working engine on Idling the pressure on the oil film is minimal.
Of course, it gradually wears out, but with the addition of oil, it is restored again. It should also be understood that oil helps to cool the engine.
What happens if the engine runs without oil - video experiment
The oil that we put into the engine wears out on its own, even when the car is quietly standing in the garage - it oxidizes. Moreover, oil wear is inevitable during active engine operation under severe loads. Oil starvation can be one of the big challenges for an engine - we'll figure out how to avoid it, the signs and consequences, and how to identify oil starvation.
Aluminum has almost melted due to insufficient lubrication
Lack of lubrication in some units in certain engine operating conditions is theoretically called oil starvation.
For obvious reasons, in the absence of lubrication in the rubbing units, they instantly fail. Danger oil starvation motor is that it can come instantly and almost completely destroy the main components of the engine:
- crankshaft,
- camshaft,
- gas distribution mechanism,
- cylinder-piston group,
- other vital and expensive components and assemblies.
Torn off camshaft key (due to insufficient lubrication)
Out of the blue!
Out of the blue, oil starvation does not occur , and as a rule, all the fault for the breakdown lies only with the owner of the car or the mechanics who made the repair. As you know, oil is in the crankcase in the amount required for lubrication and is supplied to the system using an oil pump. In the event that the oil cannot reach the individual rubbing nodes, oil starvation occurs. There may be many reasons for this.
How to identify oil starvation
It was immediately clear that the engine was "starving with oil"
First, about the determination of engine oil starvation, since the spectrum of symptoms is wide enough - from a drop in engine power to overheating, extraneous noise and knocks. All this speaks of the wear of certain components characteristic of each engine. For example, in the most common overhead gasoline engines accelerated wear and increased noise during the operation of the gas distribution mechanism are often found.
Effects
The consequences can be very different - jamming of the camshaft, fracture of the camshaft, bending of the valves, destruction of the rocker arms, cranking of the crankshaft liners, jamming of the rings in the liner up to the destruction of the pistons.
In addition, oil scraper rings may become stuck, which will lead to even greater oil overruns and engine seizure. Gray thick smoke from exhaust pipe just say about a malfunction of the oil scraper rings and high oil consumption.
Causes of oil starvation
The operation of the engine in the oil starvation mode in almost all cases is accompanied by an increased temperature, which must be paid attention to. In addition, the oil pressure in the system can be either very low (as indicated by control lamp oil pressure on the instrument panel), or unstable. All this can be caused by the following reasons:
- Insufficient oil level in the sump
... There is simply not enough lubricant to treat all plain bearings, there is no oil film, the parts run almost dry. That is why at least once a week, and even more often with active use. In addition, it is necessary to closely monitor oil leaks and, if necessary, take measures to eliminate leaks.
Engine oil dipstick (analogue on top, original below). Incorrect readings of the dipstick may not indicate in time to the car owner about the insufficient level of lubrication.
- Using oil with an unsuitable viscosity ... This is very important point, since, for example, 5w-30 oil when used in summer period may not provide the required viscosity, engine lubrication will be insufficient, pressure may drop critically at high temperatures. To avoid this, it is necessary to adhere to the recommendations of the car manufacturer in the choice of engine oils.
- Clogged oil receiver mesh
. Oil pump unable to overcome the resistance of the clogged mesh, therefore oil cannot be supplied in the required amount and under the right pressure to all nodes. The same applies to clogged oil lines. The ideal way out of this situation is to disassemble and mechanically clean the channels and the oil receiver, flushing agents can only make it worse.
Oil receiver clogged with dirt
- Irregular or untimely replacement oil and filter
... Each brand of oil has its own resource, which must be strictly observed. During operation, the grease loses most of its lubricating properties and by the end of its service life it can be almost completely oxidized and lose its viscosity.
Dismantling the oil filter
- Worn oil scraper rings and increased consumption oils ... Wear valve stem seals, crankshaft oil seals will also result in high consumption oils.
- Poor engine assembly after repair ... A competent minder will never use a sealant where a simple gasket is enough - the fact is that excess sealant is pushed not only outward, but also inward oil channels, clogging them over time.
- Failure, clogging pressure reducing valve lubrication systems.
- Clogged oil filter.
Video about engine oil starvation at high speeds
conclusions
As you can see, there can be plenty of reasons for oil starvation, and in order to prevent breakdowns, you just need to check the oil level from time to time and follow the procedure for its replacement, and eliminate leaks in time. Then the engine will last a long time without expensive repairs... Good quality oil for everyone and good roads!
