Article View: ca.environment
Article #6754Re: Reducing emissions for diesel and gas engines
From: Jeremy Higdon
Date: Tue, 01 Aug 1995 00:00
Date: Tue, 01 Aug 1995 00:00
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Believe it or not, I've trimmed about 80% of the newsgroups! In article <3vk75p$sfc@nntp.igs.net>, Hans Asselbergs <hansasselbergs@igs.net> wrote: >It was the experts at EPA which allowed a huge loophole in the seventies for >emission testing which is still there today. >By measuring the amount of offending particles in the way of a PPM (Parts Per >Million) count at a vehicles exhaust, standards were set that the automotive >industries had to follow. >What no one at the EPA realized was that you can lower the PPM count by attaching an >air pump and having it blast clean air into the exhaust. >By "diluting" the PPM count, automakers were easily passing the standards even >though the cars were spewing the same amount of garbage. Manufacturer emission standards have been in grams per mile since 1971, I think. Certainly by 1973. >Some vehicles are still sold with this infernal pump. It is used to ensure there is enough oxygen for the conversion of HC and CO to CO2 and H2O in the catalyst, not to "cheat". >There are alternate fuels, some virtually non-polluting. But we don't want to tell >the big oil companies this do we? All part of the conspiracy. jeremy
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 102344,124c1be4287cccfc,start X-Google-Attributes: gid102344,public X-Google-Thread: 1066a0,5697b0c78328b83c X-Google-Attributes: gid1066a0,public X-Google-Thread: 10e16d,124c1be4287cccfc,start X-Google-Attributes: gid10e16d,public X-Google-Thread: 10bc16,124c1be4287cccfc,start X-Google-Attributes: gid10bc16,public X-Google-Thread: 10ca13,5697b0c78328b83c X-Google-Attributes: gid10ca13,public X-Google-Thread: 10607c,124c1be4287cccfc,start X-Google-Attributes: gid10607c,public X-Google-Thread: 108659,124c1be4287cccfc,start X-Google-Attributes: gid108659,public X-Google-Thread: 10df74,5697b0c78328b83c X-Google-Attributes: gid10df74,public From: jeremy@classic.engr.sgi.com (Jeremy Higdon) Subject: Re: Reducing emissions for diesel and gas engines Date: 1995/08/01 Message-ID: <3vkb9m$9ef@fido.asd.sgi.com> X-Deja-AN: 107234856 references: <3uvdt4$cns@stud.Direct.CA> <3v5m3i$lge@mloeff01.elec.mid.gmeds.com> <3vhqg6$l4h@pulm1.accessone.com> <3vk75p$sfc@nntp.igs.net> organization: Silicon Graphics, Inc., Mountain View, CA newsgroups: ca.environment,misc.transport.urban-transit,rec.auto,rec.autos.driving,rec.autos.misc,rec.autos.tech,sci.environment,aus.cars