The platinum content in these devices is what enables them to clean up NOx emissions by converting them into less harmful molecules through a chemical reaction with oxygen and the help of other chemicals, such as urea or DEF. No, old diesel cars do not have catalytic converters installed. However, catalytic converters CATs have been fitted in the exhaust of the majority of diesel cars manufactured since Yes, diesel cars also have catalytic converters that have been stolen.
The reason is simple since metal prices go up the demand for catalytic converter parts that contain them goes up too. Below you can find some average prices for different catalytic converters which included:. The closest thing to what a catalytic converter does in a gas-powered vehicle, the diesel oxidation catalyst is responsible for converting carbon monoxide into carbon dioxide as well as dealing with any leftover fuel by effectively decomposing it.
Any additional hydrocarbons, diesel particulates, and aldehydes are all oxidized into harmless levels of carbon dioxide before happily exiting your exhaust system.
The diesel particulate filter is part that filters the one thing that a diesel reproduces that a standard, gasoline engine does not, soot. The wall-flow monolith traps these particulates and holds them, not releasing them until they have been effectively broken down. The particulates are superheated until they are reduced to something small enough to be filtered out. This single part of the four-part system is responsible for converting nitrogen.
Normally, rhodium is responsible for the breakdown of nitrogen, however, there is too much oxygen in a diesel system for rhodium to be even remotely effective. Diesel engines compensate by releasing ammonia, which is what breaks down the nitrogen and renders it into an inert and harmless gas.
There are other ways to render reactive nitrogen back to its original, inert state. The Selective Catalytic Reduction and the Exhaust Gas Recirculation systems found in diesel engines are pretty much interchangeable. Its main function is to oxidize the unburned hydrocarbons HC and carbon monoxide CO produced during the combustion process into harmless water and carbon dioxide. According to emission requirements, it is sometimes necessary to integrate multiple functions on the DOC, which also brings great challenges to the design of the DOC.
This product is made of cordierite honeycomb ceramic, which has the advantages of high mesh number, thin pore wall, large specific surface area, high compressive strength, small thermal expansion coefficient, and good thermal shock resistance. After being coated with a catalyst, it is applied to the purification treatment of diesel vehicle exhaust in the catalytic converter, the harmful substances in the exhaust gas emitted by automobiles are catalytically converted and purified to meet the requirements of emission regulations.
Honeycomb Ceramic Filter. Fiberglass Mesh Filter. Can the convertor be eliminated without effecting the computer? How restrictive is the convertor? If it will improve mileage and performance it is a waste to have such a device. Some states do not do emissions tests for diesels. The turbo is more restrictive than the cat. How is it a waste? I forget what pollutant is reduced by our cat it's not NOx , but what is the hurt?
Hi, I was wondering the same thing as to the effectiveness of these catalytic converters. When I took mine off the cat was soo clogged it was ridiculous. I question whether these cats actually work after the metal surfaces get covered in soot. It is my understanding that the gasses need to touch the metal in order for the chemical reaction to take place. It seems like once the surface area quite alot with the comb design on diesel cats is layered with soot the gas cannot contact the metal and any reactions would be minimal.
Powder Hound Top Post Dawg. My Injection Quantity is still very lean at 7. No change in power or sound. Smell is different, metallic odor with no hint of diesel once warmed up.
Good experience, low cost and pretty painless. You may have to find a mom and pop muffler shop, the larger chains do not want to install something they don't sell or can't get. The converter was all stainless steel and the monolyth appeared to be very secure in the housing. I was able to specify my pipe size for my car Verify your down pipe size before ordering. None :S. You may need to fix other engine problems in order to solve your catalytic converter problem.
A lazy oxygen sensor might falsely indicate a catalytic converter problem, yet not set a DTC for itself. A technician can determine if the sensor is responding as it should. Other engine problems, such as fuel trim running too rich or too lean, oil or coolant burning, or engine misfire problems could all lead to catalytic converter contamination or premature failure.
Depending on the extent of the damage already done, fixing engine problems might save the catalytic converter from a meltdown.
Exhaust leaks are common and can skew oxygen sensor readings without setting other DTCs. Worn exhaust gaskets and corroded flex pipes are two common issues that are significantly less expensive and more effective than replacing a catalytic converter. Removing and cleaning the catalytic converter is another potential fix. After removing the catalytic converter, use a pressure washer to blast out any contaminants from the matrix. Be sure to flush the unit from both ends. Another way to clean the catalytic converter is to soak it overnight in a combination of hot water and degreaser or laundry detergent.
This process takes longer but is necessary to dissolve the deposits clogging up your catalytic converter. After washing or soaking, be sure to dry the catalytic converter completely before reinstalling.
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