Angkat, tolak, masuk, picit...
For those who have always wanted to know....
Q :
How does a petrol pump nozzle know when to stop?
A :
The nozzle contains a small pipe that constantly sucks air from the end because it’s connected to a vacuum at the end of the hose.
When your petrol tank is full, and the nozzle is actually sitting in petrol rather than air, the pipe will suck this petrol through the pipe, rather than air, causing a drop in pressure that is detected by a valve, which shuts off the petrol supply.
(Audience): Ahhhhhhhhhhhhhhhh....
WillZ
Q :
How does a petrol pump nozzle know when to stop?
A :
The nozzle contains a small pipe that constantly sucks air from the end because it’s connected to a vacuum at the end of the hose.
When your petrol tank is full, and the nozzle is actually sitting in petrol rather than air, the pipe will suck this petrol through the pipe, rather than air, causing a drop in pressure that is detected by a valve, which shuts off the petrol supply.
(Audience): Ahhhhhhhhhhhhhhhh....
WillZ
1 Comments:
At 9:49 AM,
Jay said…
oooh..now i know..haha... been wondering about this for a long long time..haha.. thanks for the info!!
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