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Title: Whats The Future For Automotive Emission Control?
Author: Fred W. B0WDITCH
Source: American Gas Association 1971
Year Published: 1971
Abstract: AUTOMOTIVE emission control represents a major engineering challenge to General Motors. This highly complex subject also presents GM with a serious credibility problem aggravated by misinformation and political motives. The purpose of this discussion is an attempt to set the record straight and, in so doing, to indicate what appears to be in the future for control of automotive emissions. Behind much of our credibility problem are two basic misconceptions shared by much of the general public. These misconceptions are: lirst, that most of the nations air pollution problem is due to the automobile and second, that the automotive industry, and particularly General Motors, is doing nothing to minimize the emissions from automobiles. Both of these are grossly in error, I would like therefore to concentrate in these two areas. First, what about the popular misconception that most of the nations air pollution problem is due to the automobile? This bar chart (Fig. 1) shows part of the basis for this belief. Shown here is the automobile portion of each of the major air pollutants originally identified by HEW. The chart includes hydrocarbons, carbon monoxide, oxides of nitrogen, sulfur oxides, and particulate matter Or dust. About half of all hydrocarbons come from automobiles and the other half from other sources. The automobile is responsible for a little over 60% of the total carbon monoxide in the U.S. atmosphere. About two-fifths of the oxides of nitrogen emissions come from automotive sources. Note, however, the relatively low contribution of automobiles to both the sulfur oxides and particulate matter levels.

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