Conquering Carbon

Saving Fuel

The SPIER System™ is a proprietary dual induction system that revolutionizes the performance of diesel engines.

The system will work on any modern diesel anywhere in the world and is immediately available at low cost per vehicle compared with other systems.

The SPIER System ensures that an abundance of thermally controlled useful gases are delivered to the cylinder inside the cylinders of the engine.  By properly controlling and directing these gases, optimal combustion is achieved. 

Compared to today’s induction process, which is burdened by too many residual contaminants, the SPIER System creates the conditions where nearly complete combustion can occur. The SPIER System is a blended induction process that uses treated exhaust and combines it with inlet air. This process prevents improper mixing of gases, and also eliminates thermal throttling caused by high EGR temperatures.

Research shows that residual oxygen for optimal diesel combustion is approximately 8%. Test results on diesel engines using the SPIER System show an 8% residual oxygen level, which translates into a 15-30% improvement in fuel economy.

Test Results

Extensive testing has been performed under various highway driving conditions, comparing fuel consumption for trucks with a SPIER System against the same truck without a system installed.  Samples of our test results are below:

Wind Direction and Speed:

Crosswind 12mph

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Cruising Speed: 55mph

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Elevation Change: Uphill 238 feet

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Load: 7,000 lbs.

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Results (MPG improvement): 33%

Additional Testing

Benefits & Cost Savings

Improve the Performance and Reliability of your Fleet today. 

Less Maintenance, More Uptime

Every long-haul trucker knows that the longer a diesel engine is running, the more soot builds up from Exhaust Gas Recirculation (EGR) that, eventually, will result in a huge maintenance bill. Unfortunately for drivers and fleet owners, often times this includes a catastrophic engine failure out on the road.  Looking at examples from SPI.Systems Corporation’s testing and tear down of engines after as little as 100,000 miles provides a glimpse of just how damaging soot can be.

Why do we need EGR at all?  Its purpose is to cool the combustion process to help meet emission regulations on oxides of nitrogen, called NOx. However, the soot particles at engine-out going into the EGR system are very sticky and immediately bond to each other, to intake plumbing and cylinder surfaces, and get into the engine oil.  As soot particles thicken the oil, they cause turbocharger seizures and cylinder wear.  The maintenance bill can go as high as $10,000 per year, driven by engine contamination alone, all in order to meet emissions standards.

[Related: How to prevent diesel soot from wreaking havoc on your engine]

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Clearly, the cost of maintaining diesel engines is significant. Add in Diesel Exhaust Fluid (DEF) pumping and dosing of the final catalyst called Selective Catalytic Reduction (SCR). This final aftertreatment is also necessary to reduce the NOx that EGR misses. Its maintenance cost is also high due to contamination from urea deposits, so now maintenance of the total system becomes extreme, all because of NOx.  What can the trucking industry do about it?

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SPI.Systems has been working on reducing the costs of NOx reduction since 2018. Our new method is to attack the problem in two ways:

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      A) Reduce the percentage of EGR soot-laden exhaust reentering the engine.

      B) Reduce the need for EGR valve opening by cutting NOx in combustion.

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SPI has succeeded in making major improvements in combustion, along with  reductions in soot damage. SPI has measured that success in road testing that included emissions and MPG measurements, along with DEF usage readings.    Here’s what has been achieved with an upfit of the SPIER System on 15-liter engines:

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• Soot generation reductions from enhanced combustion up to 50%.

• Oxides of Nitrogen (NOx) reductions at engine-out up to 20% = less DEF usage and less EGR.

• Cleaner engine oil and cylinder walls = reduced engine rework and turbocharger failures, longer oil life.

• Reduced need for DPF cleaning and longer time between active DPF regenerations.

• Improved horsepower and grade climbing through more efficient combustion.

• Reduced DEF system and SCR maintenance.

• Lower maintenance and downtime costs.

• MPG improvements of 15-30%.

DEF Usage, Pulling 45,000 Lbs.

                                                                                     Gals.     Miles     MPG            

to Laramie, Wy.                                                    5.32      773        45.3

to Battle Mtn, NV                                                 5.16       691         133.91

to Ferley, NV                                                          5.5         768        139.64

to Little America, WY                                       4.5         634        140.89

to San Jose, CA and to Colfax, IA               5.15       949         184.27

to Bellwood, PA                                                   6.92       877         126.73     

Avg.                                                                           5.425     782         144.13    SPIER   

                                                                                     37.98     4692      110.71      OEM

                                                                                                                  30.20%  Improvement

Lower DEF usage = reduced EGR soot back into the engine.  At last, there is a way to reduce the impact of “the engine killer.”  

[Related: How to Save Big Money Maintenance caused by EGR]

Improve Fuel Economy

There is a direct relationship between reduction in EGR and improvement in fuel economy, since they are both influenced positively by the enhanced combustion produced by SPIER.  Here’s a road test report by SPI which includes our tracking of both EGR and fuel economy according to the terrain variations on a given route and load.