Page 6 - Schroeder - Fuel Filtration

The New World of Advanced Diesel Filtration

Tier 4 Requirements Demand a Sophisticated Approach and the Highest Quality
Filtration

The Tier 4 engine is a technology shift
and when compared to Tier 1-3 engines,
Tier 4 engines require a completely
superior level of filtration to run, much
less to run reliably and efficiently. Tier
4 diesel engines will now react more
violently if the injectors are constantly
bombarded by contamination. To put
this into perspective newly delivered bulk
diesel fuel typically has an ISO cleanliness
level of ISO 22/20/18 to ISO 21/19/17 but
today’s injectors need to see fluid with
a cleanliness level of below ISO 11/8/6
(aerospace cleanliness).

As we have and continue to transition into
the new world of Tier 4 requirements, the
answer to the question “How clean does The Tier 4 Emissions Regulations established by the U.S. Environmental Protection
Agency (EPA) and Canadian Environmental Protection Agency (CEPA) are getting
my fuel need to be” will be – ISO 11/8/6 tougher. In 1996, the first off-highway diesel emissions standard began with the
implementation of Tier 1 regulations. Since then, standards have continued to be
or better and the most cost effective way raised and will end with Tier 4B/Final in 2014.
to consistently achieve this is through
the use of the highest capacity, highest quality, particulate and coalescing filtration used at the point of
dispense (at the bulk tank and on the engine itself). The engine filter can no longer be the only solution.
There is simply not enough room in the engine and the cost to address the cleanliness only at the engine
will become too high. Now going forward, bulk fuel filtration must be ground zero and it must be of the
highest quality. The filtration performance specifications are now important and users must pay attention
to the specifications and mandate only the best.

It’s against this emissions reduction backdrop that Schroeder Industries developed its series of bulk / on-
board, fuel-specific filtration products. From an environmental, economic and regulatory viewpoint we
defined the critical elements our products needed to achieve customer needs, in doing so we have laid
the ground work now and for the future. While our competitors approach with yesterday’s technology,
Schroeder Industries is focused on being a world leader in the fuels filtration field by being positioned to
real issues of today.

High Pressure Common Rail System

This series of engines is built to more stringent
specifications than ever before. High operating pressure
in excess of 30,000 psi and 2-5 micron injector nozzle
tolerances make engine injector systems and fuel pumps
vulnerable to contamination levels that were not an issue
in the past. While the Common Rail System does provide
improved power, fuel efficiency and lower exhaust
emissions it, at the same time requires a new level of fuel
cleanliness and care. This cleanliness requirement for the
fuel is now mission critical to system operation. OEM
engine and injection makers are requiring that fuel used
in the engine meet tight guidelines before warranty claims are accepted. Today’s requirements call for
diesel fuel cleanliness at the engines injections of ISO 11/8/6 and a water level of <200 ppm water, both
of which are harder to obtain with the surfactants for lubricity found in today’s ULSD.

6 SCHROEDER INDUSTRIES | FUEL FILTRATION