What is the principle behind the fuel nozzle's automatic shut-off?
1 Answers
The principle behind the fuel nozzle's automatic shut-off: The nozzle tip is equipped with a sensor. When the sensor comes into contact with the fuel surface, the nozzle automatically closes, commonly referred to as 'jumping the gun.' This mechanism primarily prevents fuel overflow. The automatic shut-off does not cause any inaccuracies in the fuel quantity dispensed. Frequent automatic shut-offs, excluding the possibility of the tank being full, are mainly due to two reasons: 1. The vent pipe next to the fuel filler neck may be clogged or deformed, leading to poor tank ventilation (this is more likely to occur in hot weather); 2. There may be a blockage or poor fuel flow in the fuel delivery line.