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How cars could meet future emissions standards: Focus on cold starts
https://www.acs.org/content/acs/en/pressroom/newsreleases/2016/august/how-cars-could-meet-future-emissions-standards-focus-on-cold-starts.html[font face=Serif]FOR IMMEDIATE RELEASE | August 22, 2016
[font size=5]How cars could meet future emissions standards: Focus on cold starts[/font]
[font size=4]Note to journalists: Please report that this research is being presented at a meeting of the American Chemical Society.
A press conference on this topic will be held Monday, Aug. 22, at 2 p.m. Eastern time in the Pennsylvania Convention Center. Reporters may check in at Room 307 in person, or watch live on YouTube http://bit.ly/ACSlivephiladelphia. To ask questions online, sign in with a Google account.[/font]
[font size=3]PHILADELPHIA, Aug. 22, 2016 — Car emissions is a high-stakes issue, as last year’s Volkswagen scandal demonstrated. Pressure to meet tightening standards led the carmaker to cheat on emissions tests. But wrongdoing aside, how are automakers going to realistically meet future, tougher emissions requirements to reduce their impact on the climate? Researchers report today that a vehicle’s cold start — at least in gasoline-powered cars — is the best target for future design changes.
…
To find out what vehicles on the road are currently emitting, Drozd and colleagues at the University of California, Berkeley; Carnegie Mellon University; the University of California, San Diego; and the Massachusetts Institute of Technology rented 25 gasoline-powered cars, including two hybrids, from residents in the Los Angeles area. The vehicle ages ranged from 2 to 20 years.
…
“The clearest result was how effective emissions controls have become for organic gases,” Drozd says. “New vehicles less than 2 years old emitted as little as 1 percent of the total amount of organic gases that a 20-year-old vehicle emitted. Very few studies have tested new cars for these gases.”
The researchers also found that almost all emissions in properly functioning, new vehicles came out immediately after starting the cars when their engines were cold. But once new cars warmed up, they had to be driven 100 to 300 miles to match the levels that came out in the first 30 seconds of the engine turning on.
…[/font][/font]
[font size=5]How cars could meet future emissions standards: Focus on cold starts[/font]
[font size=4]Note to journalists: Please report that this research is being presented at a meeting of the American Chemical Society.
A press conference on this topic will be held Monday, Aug. 22, at 2 p.m. Eastern time in the Pennsylvania Convention Center. Reporters may check in at Room 307 in person, or watch live on YouTube http://bit.ly/ACSlivephiladelphia. To ask questions online, sign in with a Google account.[/font]
[font size=3]PHILADELPHIA, Aug. 22, 2016 — Car emissions is a high-stakes issue, as last year’s Volkswagen scandal demonstrated. Pressure to meet tightening standards led the carmaker to cheat on emissions tests. But wrongdoing aside, how are automakers going to realistically meet future, tougher emissions requirements to reduce their impact on the climate? Researchers report today that a vehicle’s cold start — at least in gasoline-powered cars — is the best target for future design changes.
…
To find out what vehicles on the road are currently emitting, Drozd and colleagues at the University of California, Berkeley; Carnegie Mellon University; the University of California, San Diego; and the Massachusetts Institute of Technology rented 25 gasoline-powered cars, including two hybrids, from residents in the Los Angeles area. The vehicle ages ranged from 2 to 20 years.
…
“The clearest result was how effective emissions controls have become for organic gases,” Drozd says. “New vehicles less than 2 years old emitted as little as 1 percent of the total amount of organic gases that a 20-year-old vehicle emitted. Very few studies have tested new cars for these gases.”
The researchers also found that almost all emissions in properly functioning, new vehicles came out immediately after starting the cars when their engines were cold. But once new cars warmed up, they had to be driven 100 to 300 miles to match the levels that came out in the first 30 seconds of the engine turning on.
…[/font][/font]
7 replies
= new reply since forum marked as read
= new reply since forum marked as read
Wouldn’t that be wonderful! However, while not strictly impossible, it is essentially impossible.
Even in authoritarian countries, people drive cars:
So, given that you won’t get people to give up their cars, what’s your fallback position?
