Which risk increases when a diesel engine's fuel injectors develop "coking" deposits?

💡 Explanation

When diesel injectors accumulate "coking" deposits, the fuel spray pattern becomes uneven, impairing complete combustion because localized rich mixtures create more soot and particulate matter. Therefore particulate emissions increase, rather than other options like cooling issues, bearing wear or accelerated turbocharger wear which involve different failure modes.

• Which outcome occurs in a PID-controlled chemical reactor if the derivative gain is excessively increased?
• Which risk increases when an unmanned underwater vehicle (UUV) operating in cold arctic waters experiences rapid propeller acceleration?
• Which malfunction leads R-134a refrigerant to overheat excessively in scroll compressors?
• Which consequence results when quenched welding creates martensite?
• Which risk escalates sharply during icing conditions aloft if a pressurized aircraft experiences sudden, rapid decompression?
• In a MOSFET-based power amplifier under high-frequency operation, which consequence arises from increased gate-drain capacitance?