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01-24-2007, 01:39 PM

On Wed, 24 Jan 2007 18:24:44 GMT, "nash" <zwepytzkehillc9@jetable.net>
may have said:

>Hello fellow environment guardians.
>This came to my attention when reading clean air tips at www.aircare.ca
>
>"Avoid rapid acceleration (putting the pedal to the metal) which can produce
>more than 40 times the emissions of normal driving."
>
>That means when ever a driver gets pissed off from seeing a cyclists and
>speeds up to get away from you like you are vermin he is polluting the air
>40X more than if you were not there in front of him.
>I know it IS there fault but that puts my world out of wack cause I believed
>I was improving air quality and now it is a few degrees less so.

Blame the traffic planners who insist on using one roadway for all
purposes. Expect the regulations to put even Segways out into traffic
in places where that is not already the case; IME the planners all
drive cars, and seldom have a clue about the implications of the
policies they institute.

> Also, idling more that 30 seconds is worse than shutting off the motor
>and starting up again. I guesss some intersections they could get everyone
>shutting off the motor then. haha

This assertion is true only for modern, fuel-injected vehicles with
efficient fuel delivery systems. For the older carbureted engines, it
was more like two or three minutes.

VW tried a stop/start engine with one of their Diesels[1], and Cushman
successfully does it with their gas-engine golf carts and personnel
carriers, but most gasoline-powered autos would have problems with
such a system. Also, the inevitable small delay in taking off from
the intersection would slow the progress of traffic too much in many
situaions, resulting in a significant increase in emissions as drivers
accelerated harder to try to beat the next light change.

[1] The 1980's-era VW Rabbit was nominally available with a Diesel
coupled to an automatic transmission; that model had a fairly massive
flywheel (ordinarily not used with an automatic) which was
electrically clutched to provide restart energy so that the engine
could come to a full stop when the vehicle was halted. It sort of
worked, but consumers intensely disliked the immediate cessation of
air conditioning effectiveness when the vehicle stopped, so it was
seldom sold outside of cold-climate markets.

--
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01-24-2007, 01:39 PM	#9 (permalink)
Werehatrack Guest Posts: n/a	Re: drivers speeding away On Wed, 24 Jan 2007 18:24:44 GMT, "nash" <zwepytzkehillc9@jetable.net> may have said: >Hello fellow environment guardians. >This came to my attention when reading clean air tips at www.aircare.ca > >"Avoid rapid acceleration (putting the pedal to the metal) which can produce >more than 40 times the emissions of normal driving." > >That means when ever a driver gets pissed off from seeing a cyclists and >speeds up to get away from you like you are vermin he is polluting the air >40X more than if you were not there in front of him. >I know it IS there fault but that puts my world out of wack cause I believed >I was improving air quality and now it is a few degrees less so. Blame the traffic planners who insist on using one roadway for all purposes. Expect the regulations to put even Segways out into traffic in places where that is not already the case; IME the planners all drive cars, and seldom have a clue about the implications of the policies they institute. > Also, idling more that 30 seconds is worse than shutting off the motor >and starting up again. I guesss some intersections they could get everyone >shutting off the motor then. haha This assertion is true only for modern, fuel-injected vehicles with efficient fuel delivery systems. For the older carbureted engines, it was more like two or three minutes. VW tried a stop/start engine with one of their Diesels[1], and Cushman successfully does it with their gas-engine golf carts and personnel carriers, but most gasoline-powered autos would have problems with such a system. Also, the inevitable small delay in taking off from the intersection would slow the progress of traffic too much in many situaions, resulting in a significant increase in emissions as drivers accelerated harder to try to beat the next light change. [1] The 1980's-era VW Rabbit was nominally available with a Diesel coupled to an automatic transmission; that model had a fairly massive flywheel (ordinarily not used with an automatic) which was electrically clutched to provide restart energy so that the engine could come to a full stop when the vehicle was halted. It sort of worked, but consumers intensely disliked the immediate cessation of air conditioning effectiveness when the vehicle stopped, so it was seldom sold outside of cold-climate markets. -- My email address is antispammed; pull WEEDS if replying via e-mail. Typoes are not a bug, they're a feature. Words processed in a facility that contains nuts.