Cummins Inc. 2007 Sustainability Report
Cummins Inc. 2007 Sustainability Report
Cummins Inc. 2007 Sustainability Report
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Total Automotive Useful Life Emissions<br />
Hydrocarbons (HC) in 1,000 Tons<br />
127<br />
2005<br />
38<br />
170<br />
2006<br />
makers are required by the end of the decade to<br />
further reduce PM and NOx to levels 99 percent<br />
lower than the unregulated levels.<br />
Off-highway engines produced by <strong>Cummins</strong> also<br />
are subject to stringent emission standards. While<br />
the combustion process for off-highway engines<br />
is fundamentally the same as for on-highway<br />
engines, the emission control strategies are not<br />
interchangeable because of the broad horsepower<br />
range, unique applications and the wide variety of<br />
duty cycles typical of off-highway products.<br />
50<br />
<strong>2007</strong><br />
Total Automotive Useful Life Emissions<br />
Carbon Monoxide (CO) in 1,000 Tons<br />
5,269<br />
3,950<br />
2005<br />
287<br />
2006<br />
378<br />
Between 1995 and 2006, off-highway engine<br />
emissions for NOx and PM have been reduced by<br />
80 percent and 85 percent, respectively. And from<br />
2010 to 2014, off-highway engines will be controlled<br />
to essentially the same level of emissions as their<br />
on-highway engine counterparts. By 2014, NOx and<br />
PM emissions from off-highway engines will be 98<br />
percent lower than they were in 1995.<br />
70<br />
2,242<br />
<strong>2007</strong><br />
3<br />
49<br />
On-Highway Diesel Engine Volumes (k)<br />
175<br />
2005<br />
63<br />
217<br />
2006<br />
Midrange (3–9 liters)<br />
The charts on these and subsequent pages depict<br />
<strong>Cummins</strong>’ commitment to the environment by<br />
demonstrating that the Company’s engines often<br />
exceed U. S. emissions standards. The on-road<br />
charts for North America compare the estimated<br />
maximum allowable emissions by EPA standards<br />
versus <strong>Cummins</strong>’ estimate of its engines’ actual<br />
emissions for the past three years. Estimates are<br />
based on the number of engines, both heavy-duty<br />
and midrange, manufactured in the United States<br />
for on-highway use per year.<br />
<strong>Cummins</strong> engines have released far less hydrocarbon<br />
and carbon monoxide into the environment than the<br />
maximum allowed by the EPA.<br />
And even by the tough NOx and PM measures,<br />
<strong>Cummins</strong> has been under the standards.<br />
85<br />
Heavy-Duty (10–15 liters<br />
175<br />
<strong>2007</strong><br />
For 2005, the emission tons calculation was updated to<br />
correctly reflect EPA regulated useful life since last report.<br />
The figures in the non-road charts are based on<br />
the number of midrange, heavy-duty and highhorsepower<br />
engines produced for non-road engines<br />
produced to EPA standards. As with <strong>Cummins</strong><br />
Environment<br />
39<br />
51
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