Company Introduction
Raptors, the authorized dealer of Cummins (China), established in 2015 by Mr. Jordan Wang who worked in Cummins (China) for 8 years, Jordan had been responsible for mine market for 4 years during working in Cummins china, so we have big advantages for almost all genuine Cummins generators, engine assembly and spare parts, especially for NTA855, KTA19, KTA38, KTA50, QSK60, QSX15 etc...Piston
Pistons are like the central part of the engine, which occupies an extremely important position when the engine starts. The piston is used to withstand gas pressure and drives the rod to rotate the crankshaft through the piston sales. The top of the piston is also part of the burning room. The average piston is divided into three categories: diesel piston, gasoline piston, and universal piston.
Piston ring number
In recent years, in order to reduce friction, improve mechanical efficiency, reduce the height of the ring area, thereby shortening the high and total piston compression and the total height of the piston, and the number of piston rings is decreasing. From 5 ~ 6 ring slots in the 1930s to 2 ~ 3 ring grooves. Studies have found that more compression rings are more necessary than one, because once the compression ring fails, other compression rings cannot seal the gas of the burning room, so that it will not leak into the crankshaft box, nor can it control the oil along the cylinder wall and rush upwards. Enter the burning room. Therefore, instead of increasing the number of pistons, it is better to take measures to improve the performance of the piston ring, and use a compressed ring and two oil rings grooves to ensure the completion of the sealing gas and controlling oil.Product Parameter
