What is the consequence of a broken pintle in a fuel injector?

A broken pintle in a fuel injector directly affects the operation of the injector by distorting the spray pattern. The pintle is a critical component that controls the fuel flow and atomization within the injector. When it is broken, it can lead to uneven or incorrect fuel spray distribution, which ultimately affects engine performance.

The fuel spray pattern is essential for achieving optimal combustion efficiency. A distorted spray pattern may cause incomplete combustion, leading to higher emissions and reduced engine power. Proper atomization of the fuel is necessary for efficient mixing with air, and any disruption in this process can result in a variety of performance issues, including misfires and knocking.

The other options involve separate issues unrelated to the pintle's function. Corrosion of the spray nozzle typically results from prolonged exposure to corrosive fuels or additives, whereas clogging of orifices is usually related to contaminants in the fuel or wear over time. Erosion of the valves generally occurs due to the excessive wear or high-stress conditions rather than being a direct result of a broken pintle. Thus, the consequence of a broken pintle is specifically tied to the distortion of the spray pattern, making it the correct choice.