How does Volkswagen solve the problem of burning engine oil?

In some Volkswagen dual-supercharged vehicles, an oil film will form on the cylinder wall and burn in the combustion chamber.

This is also the exchange of engine oil for engine life.

However, there are still many models without this technology, because the gap between the piston ring and the cylinder block is too large, and the oil will burn when it enters the combustion chamber. Generally, this kind of oil will have light blue exhaust gas.

What kind is it?

If it is the first type, it is normal to consume less oil, and if it is consumed quickly, it is the second type.

Replacing the piston ring and cylinder block can solve the problem.

The following is the explanation of the so-called oil loss by the public. The public does not admit that this is burning oil.

Engine oil has the function of lubricating pistons, piston rings and cylinders. When the engine piston works, there is an oil film on the inner wall of the cylinder. Due to the addition of turbine, the combustion temperature is higher than that of ordinary engine, which makes the mixture burn more fully and causes the oil film to be burned by overheated combustion gas. This is the part of the combustion chamber where the oil film will burn.

The intake valve stem also needs oil for lubrication and will be sucked into the combustion chamber. Exhaust gas with too high temperature will also consume the oil that lubricates the exhaust valve. When the turbocharged engine runs for a long time, the steam generated by high-temperature oxidation of oil will be sucked into the combustion chamber through the crankcase ventilation valve for combustion. This is also the reason why the model with T consumes more fuel than the general model.

This means that the oil in the throttling part will be burned. This is a bit ridiculous. Which car's valve stem needs no lubrication, and has never seen one that burns oil?

Volkswagen's piston has better toughness, but less tension, which reduces the loss of cylinder block and increases the maintenance cost, which is equivalent to constantly buying the life of engine with engine oil, and the clearance of piston is larger than other brands.