Title:
CATALYTIC CONVERTER FOR VEHICLES
Kind Code:
A1


Abstract:
The catalytic converter for vehicles uses lithium oxide as a catalyst metal that in the presence of alkaline solution, such as urea solution (Adblue™), and an activated carbon disc filter prevents environmentally harmful exhaust emission of vehicles.



Inventors:
Mohamed, Atef Mohamed Fathy (MAKKAH, SA)
Habeebullah, Turki Mohammed (MAKKAH, SA)
El-rahim, Ibrahim Hussein Ahmed Abd (MAKKAH, SA)
Application Number:
14/663394
Publication Date:
09/22/2016
Filing Date:
03/19/2015
Assignee:
UMM AL-QURA UNIVERSITY (Makkah, SA)
Primary Class:
International Classes:
F01N3/20
View Patent Images:
Related US Applications:
20110302915HYDRAULIC PRESSURE CONTROL DEVICEDecember, 2011Shimizu et al.
20140033710RANKINE CYCLE SYSTEMFebruary, 2014Mori et al.
20150096298PRESSURE POWER SYSTEMApril, 2015Benn et al.
20130269347COMBINED POWER AND WATER PRODUCTION SYSTEM AND METHODOctober, 2013Muthuramalingam
20130061600METHOD OF CONTROLLING TEMPERATURE OF GAS TURBINE COMPONENTS USING A COMPRESSED MOISURIZED COOLANTMarch, 2013Anand et al.
20130145762COUPLING SYSTEM FOR A HYBRID ENERGY PLANTJune, 2013Laqua et al.
20120222426INTEGRATED GAS TURBINE, SAGD BOILER AND CARBON CAPTURESeptember, 2012Macadam
20120192543EXHAUST NOZZLE FOR A BYPASS AIRPLANE TURBOJET HAVING A DEPLOYABLE SECONDARY COVER AND A RETRACTABLE CENTRAL BODYAugust, 2012Aeberli et al.
20050138914Turbo rocket with real carnot cycleJune, 2005Paul
20170167437JET ENGINES AND THEIR ARRANGEMENT IN THE REAR SECTION OF AN AIRCRAFTJune, 2017Cazals et al.
20050044847Photocatalytic reactorMarch, 2005Twigg



Primary Examiner:
LEE, BRANDON DONGPA
Attorney, Agent or Firm:
Richard C. Litman (Alexandria, VA, US)
Claims:
We claim:

1. A catalytic converter for vehicles, comprising: a housing having an inlet pipe adapted for connection to a motor vehicle exhaust and an outlet pipe; a catalyst for converting environmentally harmful components of motor vehicle exhaust gases into environmentally safe compounds, the catalyst being lithium oxide; and at least one activated carbon filter disc for absorbing and adsorbing at least some of the environmentally safe compounds.

2. The catalytic converter for vehicles according to claim 1, wherein the environmentally harmful components include carbon monoxide (CO), nitrogen oxides (NOx), and hydrocarbons (HC), the environmentally harmful components being converted into environmentally safe compounds in the presence of the lithium oxide catalyst and alkaline solution.

3. The catalytic converter for vehicles according to claim 1, wherein said housing is made from stainless steel.

4. The catalytic converter according to claim 1, further comprising alkaline solution in the housing, the environmentally safe compounds including carbonate residues, the carbonate residues being adsorbed on said activated carbon filter disc.

Description:

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to emission control devices for motor vehicles, and particularly to a catalytic converter for vehicles.

2. Description of the Related Art

Vehicular exhaust gas treatment systems are used to treat the exhaust gas from an engine of the vehicle. The exhaust gas emitted from a diesel engine is a heterogeneous mixture that contains gaseous emissions, such as carbon monoxide (CO), unburned hydrocarbons (HC) and oxides of nitrogen (NOx), as well as condensed phase materials (liquids and solids) that constitute particulate matter. Catalyst compositions, typically disposed on catalyst supports or substrates that are disposed within the exhaust gas treatment system, are provided to convert certain or all of these exhaust gas constituents into environmentally safe gas components. For example, diesel exhaust gas treatment systems may include one or more of a precious metal-containing diesel oxidation catalyst (DOC) converter for the reduction of CO and excess HC, a selective catalytic reduction (SCR) device for the reduction of NOx with the assistance of a diesel exhaust fluid (DEF), and a diesel particulate filter (DPF) device for the removal of particulate matter. When periodic regeneration (or soot oxidation) is required, the DOC will oxidize injected diesel fuel, i.e. hydrocarbons, to generate an exothermic reaction to burn off the accumulated soot inside the DPF. The exhaust system requires a hydrocarbon mixer upstream of the DOC and a DEF mixer upstream of the SCR to provide more uniform reductant distribution of the hydrocarbons and the DEF, respectively, for effective DOC and SCR operations. Thus, a catalytic converter for vehicles solving the aforementioned problems is desired.

SUMMARY OF THE INVENTION

The catalytic converter for vehicles comprises lithium oxide as a catalyst metal that in the presence of alkaline solution, such as urea solution (Adblue™) and at least one activated carbon disc filter, prevents harmful exhaust emissions of vehicles. In the catalytic converter all dangerous air pollutants, (i.e. carbon monoxide (CO), nitrogen oxides (NOx), and hydrocarbons (HC)) will be converted into non-dangerous pollutants (carbon dioxide (CO2), nitrogen (N2), and water) in the presence of catalytic metal (lithium oxide) and alkaline solution (Adblue™). The by-products react with alkaline solution to form carbonate residues, which are adsorbed on the activated carbon filter and are easily removed by water washing. The present catalytic converter prevents all environmentally harmful vehicle exhaust gases and by-products from being emitted into the ambient air.

These and other features of the present invention will become readily apparent upon further review of the following specification and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The sole drawing FIGURE is a schematic diagram of the catalytic converter according to the present invention, shown with the housing broken away to show details thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present catalytic converter for vehicles has a main body made from stainless steel. It contains at least one activated carbon filter disc to prevent vehicle exhaust emissions. In the catalytic converter, lithium oxide is used as a catalyst metal that in the presence of alkaline solution, such as urea solution (AdblueT™, which is an aqueous solution containing 32.5% high-purity urea and 67.5% deionized water, commonly known as diesel exhaust fluid), converts all dangerous air pollutants, (i.e. carbon monoxide (CO), nitrogen oxides (NOx), and hydrocarbons (HC)) into non-dangerous pollutants (i.e. carbon dioxide (CO2), nitrogen (N2), and water). The by-products react with alkaline solution to form carbonate residues, which are adsorbed on the activated carbon filter and are easily removed by water washing. The present catalytic converter prevents all environmentally harmful vehicle exhaust gases and by-products from being emitted into the ambient air.

Referring to the Figure, a catalytic converter is generally shown at 100. The catalytic converter 100 includes an activated carbon disc 10.

It is to be understood that the present invention is not limited to the embodiments described above, but encompasses any and all embodiments within the scope of the following claims.