202015 Sep
Commentary: Nitrite-free additives protect, optimize diesel engine cooling systems
General News

Unfortunately, keeping a heavy-duty truck’s cooling system in tip-top condition got more complex around 10 to 15 years ago when diesel-engine manufacturers began changing the way they engineered and built their products. The controlled atmosphere brazing (CAB) manufacturing method that is now commonly used to join aluminum parts can leave small amounts of flux behind, which can react adversely with the inhibitors in traditional nitrite-based antifreeze/coolants (AF/C). This reaction can change the coolant’s acidity to a level that can result in corrosion, plugged filters, coated heat exchangers and the buildup of scale on cylinder liners. This new inhibitor formulation also possesses the ability to seek out and protect hot spots from cavitation corrosion, which are notorious points for engine damage that can result in leaks and costly breakdowns. With the advances in today’s diesel-engine technologies, that likely means a cooling system operating with an NF OAT AF/C – one that offers inhibitor additives that can deal with the aftereffects of the CAB process and the demands of low-weight, but more sensitive, aluminum-component construction.

  • Web and Content Management
  • Content Management
  • AI & Machine learning
  • Document Management (DMS)
  • Knowledge Management