SINOTRUK HOWO Piston VG1560037011

Sinotruk Howo Parts  Howo WD615 Engine Parts- piston assembly Piston Anodized As the output power of diesel engine continues to increase, the thermal stress and mechanical stress that the piston endures also increase accordingly, resulting in the cracking and ablation of the perimeter wall of the piston top combustion chamber. Since the hard oxide film can effectively improve the heat resistance of the top surface of the aluminum piston Performance, extremely good inhibition of thermal cracking, especially for direct injection diesel engine combustion chamber at the mouth of the hot cracking tendency significantly inhibited, therefore, high-power piston generally need to be anodized. Engine running in the vehicle, part of the piston ring knock and then abnormal sound come out. Piston Knocking Acoustic noise occurs at the top of the cylinder in a rhythmic "click" sound similar to striking a cement floor with a small hammer. When the engine is idling, the sound is clear and clear. Especially when the engine is running at low temperature, the sound is obvious, the temperature increases, the sound diminished and even disappear. Piston knocking cylinder judgment method: (1) by the cylinder off the oil. Take the cylinder-by-cylinder method to determine the position of the knocking cylinder. If the oil is cut off to a cylinder, the sound is significantly reduced or disappeared, and a significant "click" sound is heard when the oil supply is resumed, indicating that the cylinder.