MULTI SAC INJECTOR

摘要

PURPOSE: A multi-sac injector is provided to maximize the engine combustion efficiency of all load regions and to remarkably reduce contaminant caused by smoke and NOx in a low-load region. CONSTITUTION: A multi-sac injector comprises a needle(1), a nozzle(2), and a fuel injection hole. The nozzle includes a nozzle chamber(6) with at least two separate fuel flowing spaces. The fuel injecting hole includes a main sac(11) and a sub sac(12). The main sac injects fuel to be suitable for the premixing ignition of a low-load region. The sub sac injects the fuel to be suitable for the diffusion combustion of a middle/high load region.