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Inertia Switch

Inertia Switch is a switch that is mounted on a vehicle to sense the shock or vibration. These are used for disabling the fuel pumps at times of accidents.

 

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Inertia Switch is a switch that is mounted on a vehicle to sense the shock or vibration. It is also part of the electrical circuits that either enables or disables some function. These switches are needed especially in the case of racing cars where the electric fuel pump needs to be switched off especially after an accident. If the car is inverted or fuel line is broken, the fuel which spills result in a fire hazard. The small loose weight which is trapped in a spring loaded cage is shocked in any direction then it will make the make the mass to move towards the cage that actuates the switch. The switch could be brought be released from its position through flexible top cover which retraps the mass. These are also used for opening a large rely to disable high power circuit found in battery electric vehicle during collision.  Inertia switch controls devices such as airbags, fuel pumps, etc. These switches are also used in seatbelts to sense the deceleration of the vehicle or when it senses the motion of the passenger and prevents the belt from spooling out when the deceleration exceeds the limit.

 

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