Quote:
Originally Posted by gum5h03
Better check your facts again bud.
I love how the laymen try to say that H2 propulsion is safe. You wait until the first bimmer goes critical mass on the NJ Parkway and you'll be one of the first ones screaming that Congress should never have let them do this.
When the car is parked for extended periods, the evaporating hydrogen builds pressure that must be safely released. A boil-off system mixes the hydrogen with air, runs it through a catalytic converter and releases water vapor through a rear-bumper vent.
Redundant safety systems abound. If the pressure inside the tank rises too high, a vent in the roof can release gaseous hydrogen directly. And if the car happened to roll over and block the roof opening, hydrogen would reroute through the underbody. A hydrogen detection system makes the car’s four door locks glow red to warn of leaking fuel in the trunk, fuel nozzle area or under the hood; windows automatically open if hydrogen should enter the cabin.
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i should have been more specific, you are right. the car does NOT give off H2 while it is running on hydrogen power.
"When running on hydrogen the only byproduct produced is the good old H2O." that being said, and like you quoted in nice bold letters
, the car does release gaseous H2 from vents in the top when it is PARKED. this is also clearly stated in the owner's manual not to park the car in parking garages for this reason. however, i don't believe that this is a factor in a tunnel because even in bumper to bumper traffic (which some might consider to be similar to parking), the engine will still only give off h20 as long as it is running.