Piston crown structure of three -cylinder engine

The utility model discloses a piston crown structure of three -cylinder engine, including a ring groove, the 2nd ring groove and the 3rd ring groove, the first internal face and the first internal face gone up of mutual disposition have in the ring groove, internal face and second internal face on the second of mutual disposition have in the 2nd ring groove, internal face under internal face and the third has on the third of mutual disposition in the 3rd ring groove, first go up the internal face with the contained angle has between the first internal face, on the second internal face with thecontained angle has between the second internal face, on the third internal face with the contained angle has under the third between the internal face. The utility model discloses piston crown structure of three -cylinder engine, all ring groove set to has certain angle, like this can be effectual the pump oil effect of suppression piston in the time of the up -and -down motion, reduce the engine oil consumption of comp