Verification Procedure - Stationary

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This page last reviewed August 22, 2008

Stationary

The current verified technologies are listed below. Please read the verification letter(s) below which provide additional information on the applicability of the device for your particular engine. Click on the link below each system for a list of engine families for which devices have been approved (engine series names are provided for reference in most cases). For more detailed information or to purchase the device, please contact the device manufacturer directly. New information will be posted as additional systems are verified. Please check periodically for updates.

Level 3 - 85 Percent or Greater Reduction in Particulate Matter:

The ARB has verified the DCL International Inc. MINE-X SOOTFILTER® diesel particulate filter (DPF) reduces emissions of diesel particulate matter (PM) by 85 percent or greater for use on stationary prime and emergency standby generators. The MINE-X SOOTFILTER® also meets the January 2009 NO2 limit and is therefore verified as a Level 3 Plus diesel emission control device when used on diesel engines certified to Tier 1, Tier 2, or Tier 3 with a PM emission rate of 0.15 g/bhp-hr or less, subject to the terms and conditions specified below with engines listed in the Engine Family List. For complete information please view the verification letter, Executive Order, and Engine Family List. Engines must meet the following operating criteria:

Parameter

Value

Application

Stationary Prime and Emergency Standby Power Generation

Engine Type

Diesel, with or without turbocharger, without Exhaust-Gas Recirculation (EGR), mechanically or electronically controlled, Tier 1, Tier 2, or Tier 3 off-road engines certified to a PM emission limit of less than or equal to 0.15 g/bhp-hr

Minimum Exhaust Temperature for Filter Regeneration

The engine must operate at the load level required to achieve 350°C for a minimum of 30% of the engine's operating time. Operation at a lower temperature is allowed, but only for a limited duration. 

Maximum Consecutive Minutes Operating Below Passive Regeneration Temperature

240 minutes

Number of Consecutive Cold Starts and 15 Minute Idle Sessions Before Regeneration Required

16

 

Number of Hours of Operation Before Cleaning of Filter Required

1,000 when using Ultra Low Sulfur Diesel (<15 ppm Sulfur)

Fuel

California diesel fuel with less than or equal to 15 ppm sulfur or a biodiesel blend provided that the biodiesel portion of the blend complies with ASTM D6751 (15 ppm sulfur), the diesel portion of the blend complies with title 13, CCR, sections 2281 and 2282, and the blend contains no more than 20 percent biodiesel by volume.

PM Verification Level

Level 3 Plus Verification:

  • PM - at least 85% reduction
  • NO2 - meets January 2009 limit


The Air Resources Board has conditionally verified the EGR Technologies LLC/CleanAIR Systems diesel emission control system (DECS) as a Level 3 diesel emission control strategy for use with stationary prime and emergency standby generator sets and pumps with a maximum rated power of 600 horsepower (hp) and emitting 0.4 grams per brake horsepower-hour (g/bhp-hr) particulate matter (PM) or less. The system is comprised of an exhaust gas recirculation unit and a CleanAIR PERMIT™ diesel particulate filter (DPF). The DPF is a passive regeneration unit using a cordierite wall-flow filter with a platinum catalyst. The PERMIT™ also includes a backpressure monitoring system. The EGR/CleanAIR DECS achieves emission reductions of at least 85 percent for PM and 50 percent for NOx. The Conditional Verification is valid provided the following operational criteria are met:

Parameter

Value

Application

Stationary Prime and Emergency Power Generation or Pumping

Size Range

Less than 600 hp (450 kW)

Engine Type

Diesel-fueled, with turbocharger, emitting 0.4 g/bhp-hr or less of PM

Minimum Exhaust Temperature for Filter Regeneration

The engine must operate at an exhaust temperature of at least 300°C at an engine load of 40 percent or more for at least 30 percent of the operating time.

Maximum Consecutive Minutes Operating Below Passive Regeneration Temperature

240 Minutes

Number of Cold Start and 10 Minute Idle Sessions before Regeneration Required

24

Number of Hours of Operation Before Cleaning of Filter Required

Project specific. 5000 Hours Typical.

Fuel

California diesel fuel with less than or equal to 15 ppm sulfur or a biodiesel blend provided that the biodiesel portion of the blend complies with ASTM D6751 (15 ppm sulfur), the diesel portion of the blend complies with Title 13 (CCR), sections 2281 and 2282 and the blend contains no more than 20 percent biodiesel by volume.


The ARB has extended the verification for the CleanAir Systems diesel particulate filter (DPF), PERMIT™, for use on stationary emergency generators to include stationary prime generators and certified engines equal to or less than 0.2 g/bhp-hr PM. For complete information please view the Executive Orders and Attachments below. Engines must meet the following operating criteria:

Maximum Consecutive Minutes at Idle 240 Minutes
Number of 10-Minute Idle Sessions Before Regeneration is Required Regeneration Recommended After 12 Consecutive Sessions; Required After 24
Minimum Temperature / Load / Time Requirements for Regeneration in Four-Stroke Engine 300° Celsius for 30 percent of operating time or two hours, whichever is longer. For most engines, 40 percent load results in temperature of at least 300° Celsius.
Number of Hours of Operation Before Cleaning / Disposal of Filter 5000 Hours Under Normal Operating Conditions
Fuel Diesel sulfur content must not exceed 15 parts per million by weight.
PM Emission / Certification Level Equal to or less than 0.2 g/bhp-hr (as tested on an appropriate steady-state certification cycle outlined in the ARB off-road regulations - similar to ISO 8178 D2.)
Cycle Four-Stroke


The ARB has verified the Johnson Matthey Continuously Regenerating Technology (CRT ®) diesel particulate filter (DPF) reduces emissions of diesel particulate matter (PM) by 85 percent or greater for use on stationary emergency and prime generators. Additionally, ARB hereby conditionally verifies that the CRT ® filter reduces emissions of diesel particulate matter (PM) by 85 percent or greater for use in stationary prime and emergency pumps. The CRT ® filter is therefore verified as a Level 3 diesel emission control device for generators and conditionally verified as a Level 3 diesel emission control device for pumps when used on diesel engines certified to Tier 1, Tier 2, or Tier 3 with a PM emission rate of 0.4 g/bhp-hr or less, subject to the terms and conditions specified below with engines listed in Attachment 1. For complete information please view the verification letter and Attachment 1. Engines must meet the following operating criteria:

Parameter

Value

Application

Stationary Emergency Standby or Prime Power Generation or Pumping

Size Range

No restriction

Engine Type

Diesel, with or without turbocharger, certified to 0.4 g/bhp-hr or less of PM

Minimum Exhaust Temperature for Filter Regeneration

The engine must operate at a load level to achieve sufficient exhaust temperature (240°C) for regeneration for 40% of the duty cycle. Operation at lower temperatures is allowed up to 200 consecutive hours, but the CRT® filter may require a maintenance step of accumulated soot burning by operating above 300°C for 5 to 10 hours.

Maximum Consecutive Minutes at Idle

720 minutes

NOx/PM Ratio Requirements

NOx/PM ratio of at least 15 at 300° C or above and 20 at temperatures below 300° C.

Number of Cold Starts Before Regeneration Required

24 cold starts with 30 minute idle sessions

 

Number of Hours of Operation Before Cleaning of Filter Required

Up to 5000 hours - application specific.

Fuel

California diesel fuel with less than or equal to 15 ppm sulfur or a biodiesel blend provided that the biodiesel portion of the blend complies with ASTM D6751, the diesel portion of the blend complies with title 13, CCR, sections 2281 and 2282, and the blend contains no more than 20 percent biodiesel by volume.

PM Verification Level

Level 3 Verification: At least 85% reduction of PM.


The ARB has verified the MIRATECH Corporation diesel particulate filte (DPF), combiKat ® CBS Particulate Trap, for use on stationary emergency and prime generators with a PM emission rate of 0.2 g/bhp-hr or less. Additionally, ARB hereby conditionally verifies that the combiKat ® CBS Particulate Trap reduces emissions of diesel particulate matter (PM) by 85 percent or greater for use in stationary prime and emergency pumps with a PM emission rate of 0.2 g/bhp-hr or less. The combiKat ® CBS Particulate Trap is therefore verified as a Level 3 diesel emission control device for generators emitting PM at a rate of 0.2 g/bhp-hr or less and conditionally verified as a Level 3 diesel emission control device for pumps with a PM emission rate of 0.2 g/bhp-hr or less when used on diesel engines certified to Tier 1, Tier 2, or Tier 3, subject to the terms and conditions specified below with engines listed in the Attachment 1. The combiKat ® CBS Particulate Trap is manufactured by HUG Engineering for the MIRATECH Corporation. For complete information please view the verification letter and Attachment below.

Engines must meet the following operating criteria:

Application Stationary Prime and Emergency Power Generation or Pumping
Engine Type Diesel, with or without turbocharger, certified to 0.2 g/bhp-hr or less of PM
Minimum Exhaust Temperature for Filter Regeneration The engine must operate at the load level required to achieve sufficient exhaust temperature for regeneration at the rated PM level of the engine, per Figure 1 in the verification letter. Operation at lower temperatures is allowed, but only for a limited duration. Per Figure 1, operate in the "Passive Regeneration Okay" side of the graph for at least 30 Minutes.
Maximum Consecutive Minutes Operating Below Passive Regeneration Temperature 720 Minutes
Number of Cold Start and 30 Minute Idle Sessions before Regeneration Required 24
Number of Hours of Operation Before Cleaning of Filter Required Application Specific. Per calculations provided in the verification letter under 'Filter Sizing'. 2000 Hours Typical.
Fuel California on-road or off-road diesel with 500 ppm limit on the sulfur content. Biodiesel is not acceptable for this verification.
PM Verification Level Level 3 Verification: At least 85% reduction of PM.


The ARB has verified the Rypos, Inc. HDPF/C™ hybrid diesel particulate filter as a Level 3 Plus diesel emission control device for stationary emergency standby generator and pump applications with a PM emission rate of 0.2 g/bhp-hr or less when used on diesel engines certified to Tier 1, Tier 2, or Tier 3, subject to the terms and conditions specified below with engines listed in the attachment below. Level 3 Plus verifications means that the system will reduce diesel PM emissions by 85 percent or more and meets the January 2009 NO2 limit. For complete information, please view the verification letter, Executive Order DE-07-001, and attachment below.

Engines must meet the following operating criteria:

PM Verification Level Level 3 Plus:
  • PM - at least 85% reduction
  • NO2 - meets January 2009 limit
Regeneration System Active
Applications Stationary Emergency Standby Generators or Pumps
Engine Type Diesel-fueled, with or without turbocharger, certified off-road engine with PM emission levels < 0.2 g/bhp-hr
Engine Models 1996 or newer and listed in the Attachment to Executive Order DE-07-001
Engine Horsepower > 50 hp
Fuel California diesel fuel with less than or equal to 15 ppm sulfur or a biodiesel blend provided that the biodiesel portion of the blend complies with ASTM D6751, the diesel portion of the blend complies with title 13, CCR, sections 2281 and 2282, and the blend contains no more than 20 percent biodiesel by volume.
Minimum Exhaust Temperature for Filter Regeneration Not Applicable (NA). Active DPF.
Maximum consecutive minutes at idle NA. Active DPF.
Number of Cold Start and 30 Minute Idle Sessions before Regeneration Required NA. Active DPF.
Number of Hours of Operation before Cleaning of Filter Required Inspect every 1,000 hours and clean if needed. Active DPF.
Additional Terms and Conditions Executive Order DE-07-001
Approval Date June 12, 2007


The ARB has verified the Süd-Chemie Inc. EnviCat-DPF™ diesel particulate filter as a Level 3 diesel emission control device for use on stationary prime and emergency standby generators and pumps using CARB ultra-low sulfur diesel fuel. For complete information please view the Executive Order and Attachment below.

Engines must meet the following operating criteria:

Application Stationary Prime and Emergency Power Generation or Pumping.
Engine Type Diesel, with or without turbocharger, without Exhaust-Gas Recirculation (EGR), mechanically or electronically controlled, off-road certified engines having PM emission levels less than or equal to 0.2 g/bhp-hr.
Minimum Exhaust Temperature for Filter Regeneration The engine must operate at the load level required to achieve 400° Celsius for a minimum of 30 minutes. Operation at lower temperatures is allowed, but only for a limited duration.
Maximum Consecutive Minutes Operating Below Passive Regeneration Temperature 300 Minutes
Number of Cold Start and 30 Minute Idle Sessions before Regeneration Required 10
Number of Hours of Operation Before Cleaning of Filter Required 1,500 when using diesel with up to 500 parts per million by weight (ppm) sulfur; 2,000 when using low sulfur diesel (<15 ppm sulfur).
Fuel California diesel fuel with less than or equal to 500 ppm* sulfur or a biodiesel blend provided that the biodiesel portion of the blend complies with ASTM D6751 (15 ppm sulfur), the diesel portion of the blend complies with Title 13 California Code of Regulations (CCR), sections 2281 and 2282, and the blend contains no more than 20 percent biodiesel by volume.
PM Verification Level Level 3 Verification: At least 85% reduction of PM.

*The 500 ppm diesel fuel sulfur limit required by this Executive Order shall be superseded by a 15 ppm diesel fuel sulfur limit as of September 1, 2006, as required by Title 13 CCR, section 2281.

Level 2 - 50 Percent or Greater Reduction in Particulate Matter:

The ARB has verified Rypos, Inc. Active Diesel Particulate Filter (ADPF) diesel particulate filter for 1996 to 2006 diesel engines certified to Tier 1, 2, or 3 PM emission rate used in stationary emergency standby applications operating on CARB Diesel fuel. The Rypos ADPF diesel particulate filter uses an active flow through filter to achieve a 50 percent reduction in particulate matter emissions qualifying it for a Level 2 verification. For complete information please view the verification letter and Attachment below.

Engines must meet the following operating criteria:

Application Emergency Standby Stationary Power Generation
Engine Type Diesel, with or without turbocharger, 0.4 g/bhp-hr or less of PM10
Minimum Exhaust Temperature for Filter Regeneration NA. Active system.
Maximum Consecutive Minutes at idle NA. Active system.
Number of Cold Start and 30 Minute Idle Sessions Before Regeneration Required NA. Active system.
Number of Hours of Operation Before Cleaning of Filter Required NA. Active system with a flow through mesh filter. Should not require cleaning.
Fuel Diesel fuel with 500 ppm sulfur content limit. Biodiesel is not acceptable for this verification
Verification Level Level 2 Verification: At least 50% reduction of particulate matter.

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