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Are Hydrogen Sensors essential in a Fuel Cell Electric Vehicle
Fuel Cell Electric Vehicles use Hydrogen as a fuel. There are chances that the Hydrogen would leak and cause an explosion. Hydrogen leak detectors could be employed to detect the leak and to take corrective and precautionary actions in the event of a leak.
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6 Replies
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Hydrogen gas is likely to leak very fast if we consider the physical characteristics of hydrogen gas speed of gas is very fast so even smallest hole can cause the leak .so it very important to put hydrogen sensor to know is there any leak .
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In a commercial vehicle, when the systems are more or less open to the elements, how will a leak detector sense the presence of Hydrogen ?
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I will say it depends upon risk assement of the vehicle ..
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Hydrogen sensors are notoriously unreliable, so in many cases safety systems try to achieve their goals without relying on a hydrogen sensor. In some cases, it cannot be avoided and an H2 sensor must be used, but it will have some redundancy (with software and other sensors to determine if a leak is present) due to the poor reliability.
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Thanks Roger for your sharp insight. Its true that H2 Sensors are not as reliable, however certain codes still insist on their blind usage and certification.
H2 safety should neither begin nor end with the H2 sensors. H2 Sensors should only be a part of H2 safety.
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