Seattle's Link Light Rail - First Trip
Uploader Comments (SilvermanStan)
All Comments (20)
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@SilvermanStan Officially it's called "Hush Mode" - fuel is cut to the diesel engine, and the electric motors propel the bus when below 15 MPH. Above 15 MPH (which only happens in the tunnel bores, not at platforms) the diesel engine is allowed to idle to charge the batteries. A small electric motor turns the diesel's crankshaft to keep the hydraulics working while fuel is cut, which is why it almost sounds like the motor is still running in station. Metro's Wikipedia page has more info.
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Hmm... I've had a Toyota Prius since 2001. Prius owners refer to "stealth mode" when operating without the internal combustion engine. The car is nearly silent. I wonder if that's what Seattle's "quiet mode" means.
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Thanks for the info on the Denver buses. The engine in these buses doesn't run at constant speed, however the technology must be similar. The engine shuts off completely at stops, and runs in "quiet mode" while in the tunnel. (I've never seen an explanation of what "quiet mode" actually does...)
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Oh! Cool! I think the free shuttle buses in Denver must be similar: CNG engine runs at constant speed; bus is powered from the battery pack--and powered it is! All the pickup of an electric trolley bus without the investment in overhead. Thanks!
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The current buses don't use the overhead wiring. Their technology is similar to hybrid gasoline/electric automobiles. A previous generation of buses ran on overhead wire in the tunnel, and diesel outside the tunnel.Those buses have been retired.
Missing Seattle
bigbtripathi 2 years ago
Is there a better city? I think not...
SilvermanStan 2 years ago 2
Oddly enough, Your Seattle trains are just like our Phoenix trains, In fact, They're made by the some company, at the same manufacturing facility, at the same time, side by side.
Everything sounds the same (except the station announcements, although the ding before each announcement is the same.) and if you look at a picture of the Phoenix trains, your able to see some similarities at their design (hint: look at a picture of the front of both, and look at the head/tail lamp sections.)
xoDAKxo 2 years ago
Thanks for the info. I just looked up the Phoenix trains and do see the similarity. In fact the slightly different front ends seem to be the only difference.
SilvermanStan 2 years ago