What causes the sudden display of an engine fault while driving?
1 Answers
1. Poor combustion state: The combustion state of the engine is the main reason for the engine fault light to illuminate, which is crucial. To ensure the engine operates in good condition and maintains a normal working lifespan, an oxygen sensor is installed in the engine design to monitor the combustion state. If the engine's combustion state is poor, it not only pollutes the environment but also leads to fuel waste and excessive engine wear. Poor combustion produces: Hydrocarbons (HC): Unburned fuel components. Carbon monoxide (CO): Incompletely burned fuel components, which are highly harmful to human health and can cause carbon monoxide poisoning leading to death. Nitrogen oxides (NO): Generated at excessively high temperatures in the engine, indicating increased engine wear and environmental pollution when released into the air. 2. Engine knocking: The engine has a dedicated knock sensor to monitor engine knocking. Engine knocking already indicates potential severe mechanical damage or significant power loss. Generally, knocking is categorized into perceptible and imperceptible knocking. In the case of imperceptible knocking, the engine's computer will adjust control parameters based on the monitored situation to avoid adverse effects. However, when imperceptible knocking exceeds the adjustable range of the engine computer, the engine fault light will also illuminate as a warning.
