Nozzle , Iran

The Alvand truck injector nozzle is a precision component with a nominal diameter of 5 to 6 millimeters. The material of this nozzle is hardened steel reaching a hardness range of 60 to 64 HRC. The nozzle seat angle in these components is typically designed at 30 or 60 degrees. The injection pressure depending on the engine model is set between 130 to 250 bars. The needle lift during injection is only about 0.1 to 0.3 millimeters. These values are essential for the proper operation of 4JB1 or 4JH1 series diesel engines. The nozzle tip usually features 4 to 5 holes with diameters of 0.20 to 0.28 millimeters. The spray cone angle ranges from 145 to 155 degrees for optimal combustion chamber penetration.

The injector nozzle creates a precise metal-to-metal seal by sitting on its seat surface. This seal must be completely leak-proof to prevent high pressure fuel from escaping. Failure symptoms include black smoke during sudden acceleration and increased fuel consumption by up to 30 percent. Unusual knocking sounds at engine idle speed are another clear sign of nozzle wear. Power loss when climbing hills and difficult cold starts indicate advanced nozzle deterioration. Replacement of these nozzles must always be performed as a complete set for all cylinders. Regular inspection intervals for these components are typically set at every 150,000 kilometers. Using non-genuine or low quality nozzles can damage the injection pump within 5000 kilometers. Always consult the Alvand truck service manual for model specific injection pressure values.You can order and buy Nozzle from Iran by contacting us through whatsaap and email.
WEBSITE: Nozzle Iran