摘要:
An apparatus for purifying the nitric oxide in the exhaust gas of the diesel engine has a NOx adsorber converter mounted on an exhaust gas pipe close to the engine, a urea catalyst converter mounted on the exhaust gas pipe at some distance from the NOx adsorber converter, and a urea supplying means connected between the NOx adsorber converter and the urea catalyst converter.
摘要:
The present invention relates to an exhaust gas purification apparatus of a vehicle, a manufacturing method thereof, and a manufacturing device thereof. The exhaust gas purification apparatus that includes a filter in which a plurality of channels are formed therein such that exhaust gas exhausted from a combustion chamber can pass therethrough to trap pollutants included in the exhaust gas, may include a first plug that plugs an inlet of at least one channel, and a second plug that plugs an outlet of at least one channel, wherein the first plug is inserted in a predetermined distance from the inlet of the at least one channel toward an outlet direction thereof at a front surface of the at least one channel.
摘要:
The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide.
摘要:
Disclosed is an exhaust gas purifying catalyst having a front end high concentration coating area coated with a precious metal of a high concentration, and a rear end complex coating area coated at different precious metal densities according to the flowing amount of the exhaust gas and a method for manufacturing an exhaust gas purifying catalyst, which is capable of simultaneously coating a rear end complex coating area at different precious metal densities according to the flowing amount of the exhaust gas. The exhaust gas purifying catalyst includes a front end high concentration coating area coated with a precious metal of a high concentration and a rear end complex coating area having at least two areas of different coating densities on the rear side of the front end high concentration coating area.
摘要:
A pipe for adsorbing fuel evaporation gas in automobiles. An aluminum pipe portion is etched with acid or base so as to increase its surface area and improve its coating properties. The pipe is subjected to a thermal treatment to further improve its coating properties due to creation of an oxidation layer through such etching process, and then is coated at the surface thereof with zeolite slurry with improved adhesion, thereby effectively adsorbing the evaporation gas in terms of performance, endurance and layout.
摘要:
A NOx reduction device for diesel vehicles includes an Lean NOx Trap (LNT) serving as a NOx filter, a Diesel Particulate Filter (DPF) located downstream of the LNT, and a Hydrocarbon-Selective Catalyst Reduction (HC-SCR) catalyst provided on the LNT. The HC-SCR catalyst can remove NOx in the regeneration of the DPF even if an additional post injector is not provided to promote an active reaction of the HC-SCR catalyst.
摘要:
An exhaust gas purifying catalyst has a front end high concentration coating area coated with a precious metal of a high concentration, and a rear end complex coating area coated at different precious metal densities according to the flowing amount of the exhaust gas and a method for manufacturing an exhaust gas purifying catalyst, which is capable of simultaneously coating a rear end complex coating area at different precious metal densities according to the flowing amount of the exhaust gas. The exhaust gas purifying catalyst includes a front end high concentration coating area coated with a precious metal of a high concentration and a rear end complex coating area having at least two areas of different coating densities on the rear side of the front end high concentration coating area.
摘要:
The air purifying system and a method for diagnosing malfunction thereof includes a heat dissipation part provided with an air purifier, an OBD sensor permanently fixed to the heat dissipation part, and an electronic control unit (ECU) electrically connected with the OBD sensor in order to determine whether the OBD sensor is fixed to the heat dissipation part.
摘要:
An SDPF (SCR on Diesel Particular Filter) includes a porous filter collecting PM (Particulate Materials) of diesel exhaust gas, an SCR (Selective Catalytic Reduction) catalyst layer coated on an exhaust gas inlet of the filter, an aluminum oxide layer coated on an exhaust gas outlet of the filter, and a precious metal catalyst layer coated on the surface of the aluminum oxide layer, and a method for producing the same.
摘要:
A diesel oxidation catalyst mounted on an exhaust pipe that exhausts an exhaust gas generated in an engine to the exterior may include a first portion having a hydrocarbon trap (HC trap) coated thereon, the HC trap absorbing or releasing a hydrocarbon (HC) depending on whether or not a predetermined condition is satisfied, and a second portion having an oxidation catalyst coated thereon, the oxidation catalyst oxidizing the hydrocarbon (HC) and a carbon monoxide (CO) in the exhaust gas, wherein the second portion performs oxidation reaction with the HC released from the first portion and releases sulphur absorbed at the oxidation catalyst by using oxidation heat generated in the oxidation reaction thereof.