SEDL / STP / STP1491-EB / STP45570S

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

Mori, Yasuaki
CCI Corporation, Seki City, Gifu,

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

Miyake, Yuji
CCI MANUFACTURING IL CORPORATION, Lemont, IL

Pages: 10    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.