Exhausts System Solution for Vehicles

Exhausts System Solution For Vehicleshttp://www.jmzidi.com/

http://www.bicvics.com/

Company Profile

SHILI Group——Zidi (Jiangmen) Environmental Technology Co., Ltd. Is founded in 2008 is a catalytic converter manufacturer. We have 50 employees currently, Our Products are three way catalysts, Diesel Oxidation Catalysts, Selective Catalytic Reduction, Diesel Particulate Filter, which are widely used in automobiles, motorcycles, generators, and other industrial equipment which will exhaust emissions. and we are the only one catalytic converter manufacturer in Guangdong.

Annual output capacities is 5 million catalysts, the products achieve Euro IV, V and USA EPA emission standard.

Add：Building 10, No. 168, Gaoxin West Road, Jianghai District, Jiangmen City, Guangdong, China


What is a catalytic converter?

A catalytic converter is an emissions control device that converts toxic gases and pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction (an oxidation and a reduction reaction). Catalytic converters are used with internal combustion engines fueled by petrol (gasoline), natural gas or diesel.

catalytic converter exterior ceramic-core cutaway metal-core cutaway


Three Way Catalytic Converters(TWC)

The Three Way Catalytic Converters(TWC), it removes harmful nitrogen oxides and carbon monoxide (CO), Hydrocarbon(HC) from the engine. It is called a catalytic converter because it converts CO into CO2, NOX into N2 and O2, and HC into H2O and CO2 through chemical reactions on a solid catalyst.

A three-way catalytic converter has three simultaneous tasks:1. Reduction of nitrogen oxides to nitrogen and oxygen: NOx + CO → xO2 + N22. Oxidation of carbon monoxide to carbon dioxide: 2CO + O2 → 2CO23. Oxidation of unburnt hydrocarbons (HC) to carbon dioxide and water: C3H6x +

4.5O2 → 3CO2 + 3H2O


TWC Components

Three way catalytic converter(TWC) is made up of substrate(Metal Foil/Ceramic Monolith), the precious metal Platinum(Pt), Palladium(Pd), Rhodium(Rh), Rare Earth Oxides, Activated Alumina, Assistant and so on.

= +1Three Way Catalytic converter Metal/Ceramic Substrate Precious Metal (Pt/Pd/Rh)

+ + + +Rare Earth Oxides γ Activated Alumina Assistant Mat/Housing


TWC Functions

The TWC converts the CO, HC, NOx into CO2 and N2 in the certain air-fuel ratio range and temperature condition.

Step 1: Molecules of polluting gases are pumped from the engine past the honeycomb catalyst, made from platinum, palladium, or rhodium.

Step 2: The catalyst splits up the molecules into their atoms. Step 3: The atoms then recombine into molecules of relatively harmless substances

such as carbon dioxide, nitrogen, and water, which blow out safely through the exhaust.


TWC Advantages& Features

Our advanced TWC have these advantages:1. Patent Products2. Optimized coating distribution.3. Improve the radial and axial use rate.4. In the engine warm up, our technology shorten the light-off two dimensional

temperature of catalysts to raise up CO and HC conversion ratio, so as to reduce cost.

5. CO Low light-off temperature ≤ 186 ℃. 6. High conversion ratio : 300℃ （λ=1） CO, HC, NOx ≥ 95%.


Combine Catalysts Pictures

Front End Back End


Inner Radial Temperature Field Comparision

Normal catalyst inner radial temperature field diagram

Combined catalyst inner radial temperature field diagram


Combine Catalysts vs Normal Catalysts

CO Conversion Ratio

HC Conversion Ration


Diesel Oxidation Catalysts(DOC)

The Diesel Oxidation Catalysts(DOC) converts CO, HC and PM into CO2 in a certain temperature with rich burning condition.

Our advanced TWC have these advantages:1. Optimized coating distribution.2. Improve the radial and axial use rate.3. Shorten the light-off temperature of catalysts to raise up CO and HC conversion

ratio, so as to reduce cost.4. CO Low light-off temperature ≤ 186 ℃. 5. High conversion ratio : 300℃ （λ≥1.1） CO≥95% ,HC≥ 80%. PM ≥ 50% NO≥40%


DOC Components

Diesel Oxidation Catalyst(DOC) is made up of substrate(Metal Foil/Ceramic Monolith), the precious metal Platinum(Pt), Palladium(Pd), Rare Earth Oxides, Activated Alumina, Assistant and so on.

= +Diesel Oxidation Catalyst Metal/Ceramic Substrate Precious Metal (Pt/Pd)

+ + + +Rare Earth Oxides γ Activated Alumina(Al2O3) Assistant Mat/Housing


Lean NOx Traps (LNT), also known as NOx absorbers, can control NOx (nitrogen oxides) emissions from lean burn diesel engines.

Function:Lean NOx Trap adsorbs the NOx in rich lean burning condition, then have a desorption reduction reaction into N2 in rich burning condition. In a normal operating conditions(Air/Fuel≥20), NOx will be adsorbed by BaO become to Ba(NO3)2. When adsorption is filled, the engine exhaust system A/F turns into rich burning condition(A/F＜14). The temperature raised, Ba(NO3)2 will have a desorption reduction reaction into NOx, then NOx converted in to N2 via catalyst.

An LNT has three simultaneous tasks:NO2+BaO ->Ba(NO3)2 Ba(NO3)2 -> NO2 + BaONO2 + Rh -> N2

Advantages: High Temperature Resistant: 650-700℃ Wide Temperature Range: 225-350℃ Conversion Ratio in 350℃ ≥ 90%

Lean NOx Traps (LNT)


LNT Components

Lean NOx Trap is made up of substrate(Metal Foil/Ceramic Monolith), the precious metal Platinum(Pt), Palladium(Pd), Rhodium(Rh), Rare Earth Oxides, Barium Oxide, Assistant and so on.

= +Lean NOx Trap Metal/Ceramic Substrate Precious Metal (Pt/Pd/Rh)

+ + + +Rare Earth Oxides Barium Oxide (BaO) Assistant Mat/Housing


DPF Functions & Features

In the DPF substrate, the exhausts go into parallel channels, the exhausts must go through the ventilation hole wall because of the DPF substrate is one way opening. In this progress, the exhausts molecules will be filtered due to collision and gravity. In order to prevent substrate channel partially blocked, the CDPF is available to solve this problem but need to add a DOC in the front of CPDF.

Features: Low regeneration temperature: 180℃ light-off temperature. Average wall hole, Good air permeability, Thin wall Black smoke particles filter effect ratio : ≥ 95% Less exhaust back pressure.

Wall hole

Channel


C-DPF Regeneration Components

Catalytic Diesel Particulate Filter(DPF) is made up of wall-flow honeycomb ceramic filter or SiC substrate, the precious metal Platinum(Pt), Palladium(Pd), Rare Earth Oxides, Base Metal, Activated Alumina, Assistant and so on.

= / + Catalytic Diesel Particulate Filter wall-flow filter or Sic substrate Precious Metal (Pt/Pd)

+ + + +Rare Earth Oxides γ Activated Alumina(Al2O3) Assistant Base Metal

+ Mat/Housing


SCR Functions

Selective Catalytic Reduction (SCR) is an advanced active emissions control technology system that injects a liquid-reductant agent (NH2-CO-NH2) have a thermal decomposition into NH3 by heating then converts nitrogen oxides into nitrogen, water.

The NOx in SCR has three simultaneous tasks: Standard Reaction:NH3+4NO+O2 -> 4H2+6H2O Rapid Reaction: 2NH3+NO+NO2 -> 2N2+3H20 Slow Reaction: 4NH3+2NO2+O2->3N2+6H2O

Features: High denitrification conversion ratio ≥98% Ammonia leak NH3 ≤ 5ppm Low light-off temperature ≤200℃ Large ammonia storage capacity Wide temperature range High selectivity


SCR Components

Selective Catalytic Reduction (SCR) is made up of substrate(Metal Foil/Ceramic Monolith), the base metal V series and Mn series metal, Rare Earth Oxides, molecular sieve or TiO2 and so on.

= +Selective Catalytic Reduction Metal/Ceramic Substrate V Group / Mn Group

+ + / +Rare Earth Oxides(W, Cu,Fe,Co,etc) molecular sieve or TiO2 Mat/Housing


SCR - Deconstructed


TWC Deconstructed


DOC DPF SCR - Combination

Engine->DOC->CDPF->SCR->Muffler


Engine->DOC->CDPF->LNT->Muffler

DOC DPF LNT- Combination

DOC DPF LNTEngine


Company Strength & Quality Control

Our company has advanced production equipment and testing instrument. Production capacity is 5,000,000 catalysts We strictly implement our standard management of administration, quality

control, regulatory and production operation. We have our own catalyst activity evaluation laboratory, catalyst synthesis

laboratory, test laboratory and catalyst coating and packaging production line so as to control the product quality effectively.

CARB, Euro IV, Euro V, OBD II or USA EPA passed Good catalysts coating technology ISO 9001 / TS 16949


Workshop(1)


Workshop(2)


Exhausts Testing System

HORIBA Exhausts Testing System Motorcycle Chassis Dynamometer MC300

Engine Test Control System


Measurement Instruments

Chemical Absorption Instrument Microcomputer Differential Thermal Balance

Atomic Absorption Spectrometer Nitrogen Absorption Instruments Laser Particle Size Analyzers


Package Machine

Our company has the machine for catalytic converter package.

Shell Material: Stainless steel. Static pressure ≥ 330 kg 80000/150000 kms warranty


Production Equipment

Vacuum Brazing Furnace Grouting Coating MachineHigh Temperature Tunnel Furnace

Grinder Product PackageCatalytic Solution Synthetise Raw Material Checking


Certificates & Honor

Invention Patent Certificates

ISO 9001 / TS 16949 Golden Supplier Science and Technology Award


Vehicle Applications

Catalytic converters are most commonly applied to exhaust systems in automobiles, they are used on cars, trucks, buses and motorcycle.


Successful Stories


Zidi (Jiangmen) Environmental Technology Co., Ltd.http://www.jmzidi.com/No.168, Gaoxin West Road, Jianghai District, Jiangmen City, Guangdong Province, China.Tel: +86-750-3865181Fax: +86-750-3865183Email: [email protected]


http://www.jmzidi.com/

Exhausts System Solution for Vehicles

Automotive

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