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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>COMBUSTION AND POLLUTANT FORMATION IN AN INDIRECT INJECTION DIESEL ENGINE</title>
      <link>https://trid.trb.org/View/199538</link>
      <description><![CDATA[A traversed fast-sampling technique has been applied to explore the processes of combustion and pollutant formation in an indirect injection, swirl chamber type diesel combustion system.  To permit traversed gas-sampling in each chamber, experiments were made on a double-scavenged two-stroke cycle engine with a simulated two-dimensional chamber configuration.  Parameters of interest in the experiments include the extent of fuel rich zones and their decay with time, the action of swirling air motion, nitric oxide formation, the formation of hydrocarbons and soot, the state of gas outflow from the swirl chamber into the main chamber, and flame spread within the main chamber.  The effect of certain operating conditions and design parameters, such as overall fuel-air ratio, injection timing, connecting passage dimension, and fuel spray direction on experimental parameters were investigated.]]></description>
      <pubDate>Thu, 28 Jun 1984 00:00:00 GMT</pubDate>
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      <title>SOME MECHANISMS AFFECTING THE MASS OF DIESEL EXHAUST PARTICULATE COLLECTED FOLLOWING A DILUTION PROCESS</title>
      <link>https://trid.trb.org/View/199549</link>
      <description><![CDATA[Previously measured particulate mass concentrations from a single-cylinder indirect-injection diesel engine are examined; these were obtained under varying dilution ratio and filter temperature conditions.  Considering the mechanisms of condensation, adsorption, and diffusion, observed variations in total particulate mass are attributed primarily to the adsorption and desorption of exhaust hydrocarbons on solid particulate matter.  A simple Langmuir adsorption model is employed to explain qualitatively the observed effects of dilution ratio and sample temperature.  Only under conditions of relatively high hydrocarbon emission is the condensation mechanism shown to be important.  Simple adsorption analysis predicts trends observed in constant volume sampling dilution tunnels in which filter temperature and dilution ratio change simultaneously.]]></description>
      <pubDate>Thu, 28 Jun 1984 00:00:00 GMT</pubDate>
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