How does fuel viscosity affect the operation of fuel injection systems?

Fuel viscosity significantly impacts the operation of fuel injection systems, primarily in determining how effectively the fuel can flow through the injectors. High viscosity fuels tend to flow more slowly, which can lead to inadequate atomization and uneven fuel distribution. This can create conditions where the fuel does not fully enter the combustion chamber or results in inconsistent sprays, potentially leading to clogging.

As the fuel flows through the injectors, any increase in viscosity can cause further complications, including deposits forming on the injector nozzles, narrowing the passageway through which the fuel must travel. This blockage can disrupt the flow of fuel and impact engine performance. Thus, understanding the relationship between fuel viscosity and injector operation is crucial for maintaining optimal performance in fuel injection systems.