Harvard Fleet Management Services, in conjunction with the Harvard Green Campus Initiative, is conducting a trial of a new non-blocking particulate filter manufactured by DCL International Inc. This device, called a MINE-X® Ultra, will reduce emissions of particulates, carbon monoxide, and hydro-carbons. While the MINE-X® Ultra has been field tested in Europe, Harvard is taking part in one of the first tests in North America. This exciting new technology achieves greater reductions of particulates than a standard retrofit (Diesel Oxidation Catalyst), without the risk of clogging found with other particulate filters.

**Breaking News: Harvard DCL trial in the Gazette: http://www.news.harvard.edu/gazette/2006/08.24/99-greendiesel.html

Vehicles Involved in the Trial

Look for vehicles with the green “Lower Emissions” sticker
	2 Blue Bird Transportation Shuttles Cummins ISB (Passenger Transport Services)
1 Chevrolet Topkick 7500 CAT 3206 (Solid Waste and Recycling)
	1 Volvo Loader LD 50 (Facilities Maintenance Operations)

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About MINE-X® ULTRA

The MINE-X® Ultra is a newly patent pending, non-blocking diesel particulate filter that provides effective particulate removal and lower backpressure than conventional wall-flow particulate filters.

How it Works

The MINE-X® Ultra is a patent pending network of flow-through channels consisting of corrugated metal foils and metal fiber fleece. The channels use a continuous but variable cross section to transfer exhaust gas though the stainless steel filter medium. Nano-particles are collected within the filter on the surface of the fibers. These particles are effectively oxidized by means of a catalytic coating, providing high overall particulate reduction across a wide range of exhaust flows and temperatures, with back-pressure characteristics similar to a conventional diesel oxidation catalyst. The design also effectively destroys carbon monoxide (CO), diesel hydrocarbons (HC) and diesel odor.

Application

The MINE-X® Ultra can be used in most aboveground diesel engine applications. It is ideal for retrofit on most diesel engines where wall-flow particulate filters are unsuitable, including older engines, two-stroke engines and engines with light duty cycles.

The MINE-X® Ultra is also suitable for new engines where a moderate particulate reduction is required for achieving engine certification.

Fuel

For proper operation, the MINE-X® Ultra requires low sulfur diesel (LSD) containing less than 500 ppm sulfur. Best results are achieved with ultra-low sulfur diesel (ULSD) containing less than 15 ppm sulfur.

Advantages

Looks, installs and operates like a conventional diesel oxidation catalyst.
Does not clog or accumulate soot particles.
Requires no maintenance.
Reaches a backpressure of less than 20 inches wc (5 kPa), meeting many off-highway engine manufacturers’ exhaust system limits.
Attains high conversion efficiency for carbon monoxide, hydrocarbons, odor and particulate matter.
Effectively removes diesel nano-particles (Diesel Nono-particles pose the highest human health risk).

Direct Fit Muffler Configuration

The MINE-X® Ultra can be configured to exactly the same dimensions as the original vehicle muffler. Since the part is an exact replacement of the original muffler, installing is easy and requires no change to the exhaust system.

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4 Primary Diesel Emissions

(Click for more information)

Particulate Matter

(PM)

Carbon Monoxide

(CO)

Nitrogen Oxides

(NOx)

Hydro-Carbons

(HC)

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Comparison to Other Technologies

Diesel Oxidation Catalysts (DOCs) are the most common form of after treatment today. DOCs eliminate a small fraction of PM and a larger fraction of CO and HC. They can be installed on any new or used engine and run on any type of diesel fuel. However, when used with off road diesel (3,000ppm sulfur) a DOC will convert part of the sulfur into sulfate PM, increasing the total amount of PM emitted.

Diesel Particulate Filters are ceramic devices that collect PM in the exhaust stream. The high temperature of the exhaust breaks particles down into less harmful components. Diesel Particulate filters can only be installed on vehicles built after 1995 with certain duty cycles, and must be used with Ultra Low Sulfur Diesel (ULSD) containing 15 ppm sulfur or less.

Non-Blocking Particulate Filter - DCL International developed this device as an intermediary between a DOC and a Particulate Filter. The MINE-X® Ultra achieves the same CO and HC reduction as a DOC, and removes more PM than a DOC. Unlike a Particulate Filter, a Non-Blocking Particulate Filter has an open flow path, which means it does not require ULSD or sustained high exhaust temperatures.

Emission Reductions Comparison

Technology:	PM	CO	NOx	HC	Cost
DOCs	10-40%	13-90%	n/a	40-90%	$1,000 - $3,000
Non-Blocking Particulate Filters	50%+	80%+	n/a	80%+	$100/month
Particulate Filters	60-90%	60-90%	n/a	60-93%	$5,000 - $10,000

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DCL International

DCL is a global leader in the engineering, manufacturing, and supporting of advanced emissions control technology for stationary and mobile industrial engines. Our products include oxidation and three-way catalytic converters, catalytic mufflers, diesel particulate filters, stock mufflers and VOC abatement catalysts. DCL, established in 1986, provides innovative solutions for controlling engine exhaust emissions to the mining, tunnelling, construction, material handling equipment, power generation, co-generation and gas compression markets. Headquartered in Concord, Ontario, DCL has two manufacturing operations and a worldwide network of representatives and distributors in over 25 countries. For more information about DCL, visit www.dcl-inc.com.

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