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School Bus

Children who ride on a diesel school bus may be exposed to up to 4 times more toxic diesel exhaust than someone traveling in a car. A study found that diesel exhaust levels on school busses were 23-46 times higher than levels considered to be unsafe and a significant cancer risk according to the U.S EPA and federal guidelines. Exposure to untreated diesel exhaust can also be a factor in childhood asthma and lung disease.

Fortunately, the harmful components of diesel exhaust; particulate matter (PM), carbon monoxide (CO), and hydrocarbons (HC), are easily reduced with current and readily available technologies which provide immediate emissions reductions and hence immediate health benefits to the local population.

Engine Control Systems Limited (ECS) offers three retrofit solutions designed with school bus fleets in mind; which are both industry leading verified solutions*. In addition, our application engineering approach to your emission control mandate is the difference between a one-size-fits-all solution and a comfortable custom-fit solution insuring quick and easy installations:

• First is the diesel oxidation catalyst (DOC), available in two configurations:
• The AZ Purifier – offering 20-40%* reduction dependent on the vehicle or the,
• AZ Purimuffler (a combined AZ Purifier catalyst and silencer solution to enhance the packaging of the DOC solution within the vehicle).
• The second is the Purifilter, a passively regenerating diesel particulate filter (DPF), which offers extraordinary and industry leading reductions of PM (90%*), HC and CO. ECS retrofit technology solutions offer superior performance at maximum cost effectiveness per retrofit dollar.
• Finally, ECS offers a closed crankcase ventilation system which can be combined with either product above which will eliminate 100% of engine crankcase gases which studies have found penetrate the school bus cabin greatly impacting cabin air quality.

These are solutions you can also feel good about, knowing your emission control dollars are serving the environment and the children well with the best verified solution in the industry*. Because particulate exposure increases exponentially with proximity to the source, reducing emissions with these retrofit technologies in the vicinity of people provides critical public health benefits and minimizes a person's exposure to these harmful emissions.

The products offered by Engine Control Systems go through a strict testing and validation regime. ECS holds more product certifications and verifications than our competitors. Letters of evaluation from agencies, testing results, and papers are readily available to our customers.

Engine Control Systems have global manufacturing facilities in the United States, Canada, and Europe. At ECS we offer many diverse ways to improve productivity, equipment life and worker health through our performance systems.

* Current EPA Verified Technologies PM reduction values dependent upon the specific engine and application using USLD fuel. Values are subject to change.

RETROFIT EMISSION SOLUTIONS

AZ Purifier and AZ Purimuffler – Diesel Oxidation Catalyst

The AZ Purifier is an oxidation catalyst that is installed upstream of the vehicles original muffler into a single integrated package. Exhaust enters the catalyst and the harmful exhaust is chemically and physically modified into harmless air. AZ Purimufflers can be designed to be a direct fit replacement for the manufacturers’ original muffler. This means less down time and less invasive installation. AZ Purimufflers are a quick and efficient way to effectively reduce harmful diesel emissions.

• Verified by the California Air Resource Board
• Verified under US EPA urban bus retrofit/rebuild program
• Certified by the US EPA Voluntary Retrofit program for two stroke and four stroke diesel engines
• Certified by the Sweden Environmental Zone program
• Approved under the UK Energy Saving Trust Transport Energy Clean-Up Program

 

Purifilter – Diesel Particulate Filter

The Purifilter is a diesel particulate filter coated with a catalytic layer. Exhaust enters the filter where the particulate is "trapped". When appropriate temperatures are reached the particulate is "burned". Exhaust comes out clean and the filter continually "regenerates" itself. The Purifilter replaces the current muffler it provides superior noise attenuation that is comparable to high grade mufflers.

• Verified by the California Air Resources Board
• Verified by the US EPA
• Verified for Urban Bus under the Energy Saving Trust Vehicle Certification Agency of the United Kingdom
• Certified under the Swedish Environmental Zones: Off-Road program
• Verified for fire trucks under the Energy Saving Trust Vehicle Certification Agency of the United Kingdom