abrasive honing (Dieselpartsworld) 2016-02-28    

The 40 reason engine burning oil "
10 abrasive honing
If the cylinder liner after honing and polishing treatment must be in strict accordance with the requirements of clean to prevent residual metal scrap or abrasive damage surface of piston ring groove. Cleaning method is as follows: after honing must be thoroughly clean cylinder with a brush dipped in soapy water, then immediately anointed; or 10# lubricating oil cleaning and wall and carefully wipe clean. Repeat this process until all the foreign bodies were removed. Regardless of which method is used, the requirements of inspection: a piece of white cloth to wipe the surface of cylinder liner, if cloth wipe still clean indicates cylinder has been cleaned.
Note: you cannot use gasoline or kerosene cleaning after honing cylinder. Because they cannot be attached on the wall of the abrasive, and will bring it into micro honing. So, without the normal cleaning cylinder may cause premature wear of piston ring failure, resulting in oil consumption.
11 piston ring groove wear
The flatness of the end face of the piston ring groove or not, the gap between the piston and piston ring groove is correct or not, is an important factor in the piston ring can play a good role in sealing. Usually, the automobile engine piston ring groove side gap should not exceed 0.002 -0.004". When the piston moves up and down, must be properly embedded in the piston ring groove of the piston ring. If the piston ring groove deformation will cause the piston ring does not work, oil fromentering the combustion chamber. The piston ring groove wear will cause the next gap increases, resulting in excessive oil from entering the combustion chamber. On the other hand, beside the gap is too large and will cause the impact piston ring piston ring groove, causing the piston ring groove wear further, if the situation does not improve, and even cause the fracture of piston ring bank.