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Norman G. Clark Announces: Three-Way Catalyst Systems for LPG-Powered Forklift

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Norman G. Clark Announces:

 

Three-Way Catalyst Systems for LPG-Powered Forklift
Trucks

Nett Technologies Inc. have
developed a retrofit, three-way catalyst system for LPG-powered forklift
trucks. The emission control kit includes a three-way catalytic muffler, an
oxygen sensor, and a digital air to fuel ratio controller. The system
efficiently removes carbon monoxide, nitrogen oxides, and hydrocarbons from LPG
exhaust gases. It is intended for forklifts operating in confined areas, where
it can improve the air quality and help to meet the occupational safety and
health standards.

Three-way catalyst in conjunction
with an air to fuel ratio controller is the most effective method of cleaning
spark-ignition engine exhaust gases available today. This technology has been
used on automobiles since the introduction of electronic fuel injection. Now,
with the availability of digital air to fuel ratio controllers designed for LPG
fuel systems, the three-way catalyst technology, with its unsurpassed exhaust
gas purification, can be applied on forklift trucks.

The Nett emission control kit
includes a platinum-rhodium, three-way catalyst built into a muffler. The
catalytic muffler is a direct-fit replacement of the original muffler to reduce
the installation cost to minimum. To ensure high efficiency of the catalyst, a
digital air to fuel ratio controller, supplied as part of the kit, is installed
on the truck. The controller receives a feedback signal from a zirconia oxygen
sensor ("lambda" sensor) placed at the inlet to the muffler. Stoichiometric air to fuel ratio is realized by a solenoid valve which biases pressure on the
fuel converter membrane using vacuum and, thus, controls the amount of fuel
supplied to the mixer. In addition to the emission benefits, the application of
the system improves the overall fuel economy of the truck.

Propane exhaust gases contain
substantial quantities of carbon monoxide (CO) which is a big problem in all
confined space applications. CO is toxic and poses a health hazard to the
workers. Another important pollutant found in LPG exhaust gases is nitrogen
oxides (NOx). NOx levels produced by LPG engines are usually higher than those
in gasoline exhaust gases. NOx is very toxic and detrimental to some industrial
products. Nett three-way catalytic mufflers are new and the most effective
means of controlling these emissions. Oxidation catalyst systems, traditionally
used on LPG forklifts, are not effective in controlling NOx. Lean-biased fuel
controllers, sometimes used as a means of CO control, increase NOx emissions
and their overall benefit is frequently questionable.

 

 

 

 

 

Nett Technologies Inc. specializes
in emission control products for engines, vehicles, and machinery used in
material handling, construction, and mining industries. A wide range of
products are available from Nett, including catalytic converters for diesel,
natural gas, LPG, and gasoline engines, diesel particulate filters, and fume
diluters.

Image - Complete system for 3 way catalytic muffler along with
NEES air-fuel ratio controller for LPG forklifts

 

For more information contact NORMAN.G.
CLARK on (03) 9450 8200 or visit our
website at www.ngclark.com.au