Auto Parts Fuel Injector Diesel Injection 23670-27030 for Auto Fuel Common Rail Nozzle Injector

Influence of Injector Structure on Diesel Engine Performance and Emissions

Through the ESC test cycle and steady-state full-load test, the combustion system matching scheme that meets the requirements is determined. The relevant conclusions are as follows:
q) Under full load, compare engine performance at injector flow rates of 750mL/in and 610mL/min. The results show that when the speed range is higher than 1600R/min, the smoke value and fuel consumption value corresponding to 750mL/min are relatively low, but the NO and emission values are slightly higher. The results of the ESC test showed that the engine particulate emissions decreased when the injector flow rate was 750mL min. In order to meet the national IV emission requirements for particle emissions and at the same time integrate the full load performance of the engine, 750mL/min is selected as the optimized parameter of the injector flow. ) The full-load performance curves of 148° and 150 nozzle cone angles are basically the same. The ESC test results show that the engine economy is better when the nozzle cone angle is 148, and the particle emission value is slightly reduced. Therefore, the optimized nozzle cone angle is selected to be 148°
6) During the optimization process, experiments were carried out for different nozzle protrusions. Under full load, at the rated speed point, the power of the nozzle protrusion of 2.0mm is slightly lower, the difference is about 2kw, but it has met the requirements. However, at full load, the smoke level when the nozzle protrusion is 2.0mm is smaller than that of the other two types of nozzle protrusions. ESC tests show that the emission levels of NO, CH, CO, and soot are roughly the same when the nozzle protrusions are different. When the protrusion of the nozzle is 2.0mm, the particle emission of the diesel engine is significantly reduced. Therefore, in general, the nozzle protrusion of 2.0mm is the best, and will be used in the subsequent optimization design.