- DIESEL GENERATOR EMISSIONS CONTROL | POWER GENERATION
Diesel Oxidation Catalyst (DOC)
Reliable CO & HC Emissions Control for Power Generation
The Diesel Oxidation Catalyst (DOC) is a compact emissions control solution designed specifically for stationary diesel generators. Built for prime power, standby power, and continuous-duty applications, it reduces carbon monoxide (CO) and hydrocarbon (HC) emissions while maintaining low exhaust backpressure and maintenance-free operation. Available for both OEM and retrofit installations.
25%
PM REDUCTION
98%
CO REDUCTION
94%
HC REDUCTION
94%
HAPs REDUCTION
EPA
VERIFIED TECHNOLOGY
BUILT FOR
POWER GENERATION
Reliable emissions control for every critical power application.
DATA CENTERS
Mission-critical backup power you can depend on. Zero tolerance for permit risk or downtime.
HOSPITALS
Emergency standby systems where uninterrupted operation is a regulatory and patient safety requirement.
UTILITIES
Peak shaving and grid support where strict emissions permit requirements apply at every site.
MANUFACTURING
Continuous-duty prime power for non-stop industrial operations that can’t tolerate permit disruptions.
SYSTEM OVERVIEW
How the Diesel Oxidation Catalyst Works
The Diesel Oxidation Catalyst (DOC) converts carbon monoxide (CO) and hydrocarbons (HC) into carbon dioxide and water vapor as exhaust gases pass through the catalyst. Designed for stationary diesel generators, it provides reliable, maintenance-free emissions control for prime power, standby power, and continuous-duty applications.
Maintenance-Free
No filters or regeneration required
Low Backpressure
Maintains engine performance and efficiency
Direct-Fit Design
Available in universal and OEM replacement configurations
Corrosion Resistant
Constructed from stainless and aluminized steel
Sound Attenuation
Matches or exceeds OEM muffler acoustic performance
FREQUENTLY ASKED QUESTIONS
Diesel Oxidation Catalyst (DOC) system Common Questions
Find answers to the most common questions about M-Series Diesel Oxidation Catalyst (DOC) systems, stationary diesel generator emissions control, EPA compliance, and oxidation catalyst technology for power generation.
What is a Diesel Oxidation Catalyst (DOC)?
A Diesel Oxidation Catalyst (DOC) is an emissions control device designed for stationary diesel generators. It reduces carbon monoxide (CO) and hydrocarbon (HC) emissions by converting them into less harmful gases during normal engine operation.
How does a Diesel Oxidation Catalyst work?
As exhaust gases pass through the catalyst, carbon monoxide (CO) and hydrocarbons (HC) are converted into carbon dioxide and water vapor, reducing harmful emissions without requiring regeneration.
Is a DOC suitable for stationary diesel generators?
Yes. Diesel Oxidation Catalysts are widely used on stationary diesel generators for standby, prime power, and continuous-duty applications where reliable reduction of CO, HC, and HAPs is required.
Does a DOC require regeneration?
No. Unlike Diesel Particulate Filters (DPFs), Diesel Oxidation Catalysts do not store soot and therefore require no active or passive regeneration, making them a simple and maintenance-free emissions control solution.
Does a DOC increase exhaust backpressure?
No. Modern Diesel Oxidation Catalysts are designed with low-restriction substrates that minimize exhaust backpressure while maintaining engine performance and fuel efficiency.
Can a DOC replace a diesel generator muffler?
Yes. Many Diesel Oxidation Catalyst systems are available as direct-fit catalytic mufflers or universal configurations, allowing easy integration while maintaining excellent sound attenuation.
Is a DOC compatible with OEM and retrofit generators?
Yes. DOC systems can be installed on both new generator packages and existing diesel generators without major engine modifications, making them suitable for OEM and retrofit applications.
Does a DOC require engine recalibration?
No. Diesel Oxidation Catalysts operate independently of the engine control system and normally do not require engine recalibration or ECU remapping.
What are the benefits of a metallic oxidation catalyst?
Metallic oxidation catalysts provide excellent thermal durability, low backpressure, rapid heat transfer, and long service life, making them ideal for stationary diesel generator applications.
Is a DOC EPA verified for stationary applications?
Yes. EPA-verified Diesel Oxidation Catalyst systems are available for eligible stationary diesel generator applications, helping facilities meet applicable emissions requirements.
What maintenance does a DOC require?
Diesel Oxidation Catalysts are designed for maintenance-free operation. With no soot storage or regeneration cycle, routine maintenance is generally limited to periodic visual inspection during scheduled generator servicing.
Why choose a Diesel Oxidation Catalyst for power generation?
A Diesel Oxidation Catalyst provides a simple, reliable, and cost-effective solution for reducing Carbon Monoxide (CO), Hydrocarbons (HC), and Hazardous Air Pollutants (HAPs) from stationary diesel generators. It offers low backpressure, maintenance-free operation, and straightforward integration without affecting generator reliability.
Can a DOC be installed on existing generators?
Yes. It is available for both OEM and retrofit generator installations.
Still have questions?
Our emissions control experts are here to help.
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Ready to Meet Your Emissions Requirements?
Tell us about your generator and emissions requirements. Our engineering team will recommend the right Diesel Oxidation Catalyst (DOC) solution for your power generation application.
- Free application review with an emissions solutions expert
- Customized installation & maintenance manuals
- BMS / MODBUS integration support
- No engine mapping required. OEM and retrofit ready
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DOWNLOADABLE DOCUMENTS
