Products

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LPG & CNG

Conversion technology for clean gas applications EGT uses the Lima Autogas system which has been designed and calibrated for use with most modern day petrol engines ranging from 3 cylinders to 8 cylinders.

• Lima systems are not ‘stand alone’.
• Lima uses the petrol “engine management system” – (ECU) while running on LPG/CNG to ensure smooth driving and no engine management problems.
• The system remains on LPG/CNG under hard acceleration and does not revert back to petrol unlike most systems on the market.
• All Lima systems are adjusted and calibrated through the Lima laptop-based software. A typical set up can take approximately 5-10 minutes.
• The Lima engine management system (ECU) uses the petrol injection signals which are looped through the ECU to achieve much improved emission levels.
• The system is also fully OBD/EOBD compliant.

Exhaust systems, Catalytic converters and silencers

EGT has its own range of exhaust systems that are developed and designed specifically for alternative fuels operation, on LPG & CNG

• The installed system controls and achieves
• Euro emissions levles according to the selected satadnard and the calibration of the Lima ECU
• Controlled noise levels

Systems for dual-fuel diesel and gas operation are avaialble

Range

1. Activated Carbon Adsorption Technologies

Adsorption is a process that occurs when a gas or liquid solute accumulates on the surface of a solid or a liquid (adsorbent), forming a molecular or atomic film (the adsorbate). It is different from absorption, in which a substance diffuses into a liquid or solid to form a solution. The term adsorption encompasses both processes, while desorption is the reverse process. Adsorption is operative in most natural physical, biological, and chemical systems, and is widely used in industrial applications such as activated charcoal, synthetic resins and water purification. Adsorption, ion exchange and chromatography are sorption processes in which certain adsorptives are selectively transferred from the fluid phase to the surface of insoluble, rigid particles suspended in a vessel or packed in a column. Similar to surface tension, adsorption is a consequence of surface energy. In a bulk material, all the bonding requirements (be they ionic, covalent or metallic) of the constituent atoms of the material are filled. But atoms on the (clean) surface experience a bond deficiency, because they are not wholly surrounded by other atoms. Thus it is energetically favourable for them to bond with whatever happens to be available. The exact nature of the bonding depends on the details of the species involved, but the adsorbed material is generally classified as exhibiting physisorption or chemisorption.

Absorbents

Characteristics and general requirements

Activated carbon is used as an adsorbent

The adsorbents are used usually in the form of spherical pellets, rods, mouldings or monoliths with hydrodynamic diameter between 0.5 and 10 mm. They must have high abrasion resistance, high thermal stability and small micropore diameter, which results in higher exposed surface area and hence high capacity of adsorption. The adsorbents must also have a distinct macropore structure which enables fast transport of the gaseous vapour

Activated carbon

They are highly porous, amorphous solids consisting of microcrystallites with a graphite lattice. They are non-polar and cheap.

In an automotive application safety is assured with the regulation of temperature inside and outside of the cylinder. Strict controls are maintained in all aspects of manufacture, storage and in-tank use. “rANGe” carbon is manufactured from Wood based activated carbon produced by phosphoric acid activation of selected sawdust raw material Activated carbon has a life of 50 years in the tank.

The carbonized particles are “activated” by exposing them to an oxidizing agent, usually steam or carbon dioxide at high temperature. This agent burns off the pore blocking structures created during the carbonization phase and so, they develop a porous, three-dimensional graphite lattice structure. The size of the pores developed during activation is a function of the time that they treated in this stage. Longer exposure times result in larger pore sizes. The most popular aqueous phase carbons are bituminous based because of their hardness, abrasion resistance, pore size distribution, and low cost, but their effectiveness needs to be tested in each application to determine the optimal product.

Its usefulness derives from the its large mocropore and mesopore volumes and the resulting high surface area.

2. ANG storage applications

ANG storage application summary – typical storage options

3. Low Pressure tanks storage

ANG tanks afford a lightweight storage solution when applied to gas usage as a fuel. A lightweight tank allows for natural gas to be used in vehicles and engines that would otherwise only be suitable for compressed natural gas – CNG, or more costly Liquefied natural gas, LNG.

• Refuelling of storage capacity
• Low pressure filling of the storage vessel containing rANGe, (on vehicle or ground stoage), results in lower electricity costs during compression and faster filling times

Lightweight tanks allow for an exchange tank operation

• More effective refuelling
• No interference with conventional dispensing stations and long queues

Fixed ANG tanks provide

• More stable vehicles on 2-3 wheelers
• Less weight on critical GVW vehicles, where payload is income not a cost

Bulk transport for mother/daughter capacity

• More gas capacity on the vehicle
• Allows bulk cylinder transport