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为了进一步有效地减轻加利福尼亚州城市间铁路客运的排放污染，该州运输部在其客运机车购置技术条件中引进了有关废气排放物的限制标准。因为没有可供利用的排放试验数据作为确定排放减轻目标的依据，所以该州运输部出资进行了一项试验，旨在从两种现代化城市间客运内燃机车上获取气体和颗粒排放物数据以及烟度数据。该试验是在美国铁路协会芝加哥技术中心进行的。这两台客运机车一台为EMDF59PH型，另一台为GEDASH8－32BWH型。EMD机车还装有一台独立的由底特律柴油机公司制造的8V—149型柴油机，专门用于向被牵引的客车提供480V的交流电。对该辅助柴油机亦进行了排放试验。这些试验数据被用来确定基准排放水平，以作为对机车制造厂家生产新型低排放机车的一项要求。两种机车柴油机的数据是在标准喷油定时下以及在为降低NOx排放量而将喷油定时延迟4°的条件下记录的。这次排放试验的结果已被纳入加利福尼亚州运输部机车采购规程中，也就是说，在加利福尼亚州城市间客运内燃机车技术条件及购置决策中对排放性能要求作了明确规定。本文包括这两种机车在稳定状态条件下的碳氢化合物（HC）、一氧化碳（CO）、氮氧化物（NOx）和颗粒物质（PM）的排放试验结果。亦给出了根据柴油消耗和硫含量而计算出的二氧化硫
To further reduce emissions from inter-city rail passenger transport in California, the state’s Department of Transportation has introduced restrictions on emissions from its technical conditions for the purchase of passenger cars. Since no available emission test data were available as a basis for determining emission mitigation goals, the state Department of Transportation financed a pilot project to capture gas and particulate emissions data from two modern inter-city passenger diesel locomotives and smoke Degree data. The trial was conducted at the American Railway Association Chicago Technical Center. One of the two passenger locomotives is of the EMDF59PH type and the other one is of the GEDASH8-32BWH type. The EMD locomotive is also fitted with an independent 8V-149 diesel engine manufactured by Detroit Diesel Engine and designed to provide 480V AC to towed buses. The auxiliary diesel engine was also tested for emissions. These test data are used to determine the baseline level of emissions as a requirement for locomotive manufacturers to produce new low-emission locomotives. The data for both locomotive diesels is recorded at standard injection timing and with a 4 ° delay in fuel injection timing to reduce NOx emissions. The emissions test results have been incorporated into California Department of Transportation locomotive procurement procedures, that is, the California city intercity passenger diesel locomotive technical conditions and acquisition decisions on the emission performance requirements were clearly defined. This paper includes the results of emission tests of hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx) and particulate matter (PM) under steady state conditions for the two locomotives. Sulfur dioxide is also calculated based on diesel consumption and sulfur content