STP1491

    Cavitation Protection Performance of Nitrite-Free Organic Acid Based Coolant for Heavy-Duty Engines

    Published: Jan 2008


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    Abstract

    For decades, most all heavy-duty engine coolants contain nitrites in order to protect against cavitation erosion/corrosion. So much so that many industry specifications require nitrites by name as well as minimum concentration quantities as they have been found to be very effective in minimizing cavitation erosion/corrosion of heavy-duty engine cast iron cylinder liners. However, the use of nitrites has become an issue because it is commonly known that nitrites could produce carcinogens when mixed with amine-type coolants. Legislation in some countries recommend not using it. This paper introduces nitrite-free, organic acid based, long-life coolant technology that gives the desired cavitation protection.

    Keywords:

    aromatic carboxylate, aliphatic carboxylate, organic acid, cavitation, heavy-duty, ultrasonic cavitation, elastomer compatibility testing, engine dynamometer testing, fleet testing


    Author Information:

    Mori, Yasuaki
    CCI Corporation, Seki City, Gifu,

    Abel, Michael L.
    CCI MANUFACTURING IL CORPORATION, Lemont, IL

    Miyake, Yuji
    CCI MANUFACTURING IL CORPORATION, Lemont, IL


    Paper ID: STP45570S

    Committee/Subcommittee: D15.11

    DOI: 10.1520/STP45570S


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