ISSN: 1546-962X
Published Online: 7 February 2007
Page Count: 11

Cavitation Protection Performance of Nitrite-Free Organic Acid Based Coolant for Heavy-Duty Engines
Mori, Yasuaki
CCI Corporation, Gifu

Abel, Michael L.
CCI MANUFACTURING IL CORPORATION, Lemont

Miyake, Yuji
CCI MANUFACTURING IL CORPORATION, Lemont

(Received 1 February 2006; accepted 4 January 2007)

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

Paper ID: JAI100367
DOI: 10.1520/JAI100367
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