Diesel Oxidation Catalyst Restoring Technology For Truck Fleet Operators
Restore TM Multi-Step Chemical Process Selectively Removes Contamination & Poisons
and Replaces Lost Precious Metals
The Restore Process, is a multistep chemical extraction procedure that selectively removes phosphate deposits , sooty oils, and deactivating poisons, without harming the original active catalyst materials.
Replaces Precious Metals
The Restore Process also replaces Precious Metals lost while previously in service. The additional precious metal restores the catalyst coatings back to original OE metal levels.
Results in Improved Performance
Catalyst Restoration also involves multiple heat treating process that results in 90% greater performance and DOC runs like new.
Phosphates Contamination & Catalyst Poisons The Main Cause of DOC Deterioration and Deactivation
Signs of any deteriorated or nonfunctioning DOC
Phosphate materials lock onto and contaminate the catalyst surface. These and other poisons collect and deactivate the catalyst surface over time.
Gradually covering the active catalyst surface over time; these materials masks the active catalyst surface and block interaction with exhaust gas. Contaminants and catalyst poisons also infuse deeper into the catalyst coating which caused further deactivation.
In some cases, the DOC will clog and restrict exhaust gas flow.
When DOC performance falls below a certain threshold, it cannot keep itself clean, or support reliable particulate filter regeneration.
Diesel Oxidation Catalyst (DOC ) Important Role in Particulate Filter Regeneration
The DOC is a key exhaust emissions control device, which is also critical to Reliable Particulate Filter Regeneration regimes.
Low DOC performance results in poor emissions, incomplete filter regenerations and ultimately leads to particulate filter failure.
One role of a DOC in the system is to scrub diesel exhaust emissions. In the case of Particulate Filter equipped exhaust systems , the DOC also raises exhaust gas temperature and increases nitrogen dioxide concentration in the exhaust stream. These combined effects are crucial for reliable particulate filter regeneration and performance.
Typically, filter regeneration events begin when the electronic fuel control system injects excess fuel into the exhaust stream. The excess unburned fuel reacts strongly inside the catalyst which then creates substantial heat, and increases the nitrogen dioxide in the exhaust.
When the DOC is operating at a low rate of performance, insufficient heat is generated. Without the required high exhaust temperature, the Particulate Filter will not Regenerate, and fails.