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Tier 4 Emissions ResourcesOur Commitment To Your SuccessNew Emissions Reduction StandardsCat Technology #1: Web-based Account ToolsCAT TECHNOLOGY #5: AFTERTREATMENT To meet Tier 4 interim/Stage IIIB emissions standards and beyond, Cat aftertreatment components (identified by the number 5 in the picture at the right) have been designed to match application needs. Read below to learn more about Caterpillar aftertreatment components, including frequently asked questions about the Cat Regeneration System. |
| DESIGNED TO MATCH APPLICATION NEEDS For small to medium applications, Cat aftertreatments (depicted below) include service-free compact systems with passive regeneration that need no supplemental fuel. In medium to large applications, Cat aftertreatments are durable, packaged systems designed to withstand even the most demanding applications. The aftertreatments for medium to large applications feature fuel-efficient, reliable regeneration mechanisms that can operate automatically. AFTERTREATMENT COMPONENTS The various components of Caterpillar's aftertreatment technology are described below:
CAT CLEAN EMISSIONS MODULE (CEM) The CEM (pictured below) is a flexible Caterpillar designed modular system that can include the following components: DOC, DPF, CRS, muffler and air cleaner. The CEM, designed to withstand the most severe applications and conditions, is available on C7.1 ACERT–C18 ACERT engine models. For C4.4 ACERT and C6.6 ACERT engines the configuration is a single can, including a DOC and DPF, with a simple passive regeneration system. The CEM protects the components, minimizes the aftertreatment footprint, and simplifies maintenance. FREQUENTLY ASKED QUESTIONS ABOUT THE CAT REGEN SYSTEM Q: Will Cat's CRS system only regenerate during idle? A: Cat's system will initiate regen when conditions are optimal, either during operation or during idle. Q: Will the operator be required to initiate regen? A: Only if the system is set to manual. If in automatic mode, no action is required by the operator Q: Will Cat's regen strategy force customers out of work cycle to regenerate? A: No, the system will find opportunities to regenerate without work cycle interruption Q: Will Cat's system cause customers to increase their idle time? A: No changes to work cycle or idle time will be necessary. The system will function properly in any application Q: During low speed regen, is the machine unavailable until regen is completed? A: No. If the system initiates low speed regen, the operator can automatically interrupt regen by returning to work at any time Q: Can the operator decide when and where to initiate regen? A: Yes, the operator can activate or inhibit regen via a dash switch. If the system is set in manual mode, the operator will decide when and where to regenerate. Q: What system modes does Cat offer on the 7-18L engine system? A: In the MANUAL mode, the operator has sole control over regen. In the DEFAULT AUTOMATIC mode, the system automatically selects and initiates regen when conditions are optimal. In the LOW SPEED AUTOMATIC mode, the system automatically initiates regen during normal idle periods. Q: Will customers notice performance impact during high speed regen? A: No. Q: Why would a customer select Low speed auto mode? A: Because this is the most fuel efficient setting Q: Why did Caterpillar implement different regen systems on our engines? (Low Temp Passive, High Temp Active via CRS - low speed and high speed) A: Caterpillar evaluated multiple technologies and selected the technology that best meets our customer needs for the emissions regulation for each hp range and application. Q: What technologies are competitors utilizing? A: Most competitors are implementing dosing systems. Volvo, and Deutz have implemented burner systems on some of their engines. Deutz has also selected a passive system on some engine platforms. Q: If a customer utilizes the low speed/high speed auto mode, will the machine consume more fuel than if the customer were to select low speed auto mode? A: If the customer utilizes existing normal idle periods, the new default mode should have insignificant impact on fuel consumption compared to the low speed auto mode. Heavier reliance on high speed regeneration will consume more fuel during regeneration.
| CALL NOW TO LEARN MORE Marcus Plunkett 865-595-4951 Send me a message EMAIL THIS PAGE TO A FRIEND JOIN OUR EMAIL LIST Sign up to receive Stowers news, expert advice and tips, and specials in your email inbox. BUILT FOR THE NEXT GENERATIONDownload this brochure for a summary of Tier 4 emissions technologies offered by Caterpillar. (PDF 2.95MB) EMISSION & TECHNOLOGY FORUMVisit the Emission & Technology Forum sponsored by Diesel Progress magazine. DIESEL TECHNOLOGY FORUMThe nation’s leading resource and educator on the importance and unique value of diesel engines, fuels, equipment, and emissions control technology. DIESELNETOnline information service on clean diesel engines and diesel emissions. ENGINE MANUFACTURERS' ASSOCIATIONThe voice of the engine manufacturing industry on domestic and international public policy as well as regulatory and technical issues. ENVIRONMENTAL PROTECTION AGENCYLink to the U.S. Environmental Protection Agency's website. DOWNLOAD ADOBE® READER®If you do not have Adobe® Reader® to view PDF files, get it free at the Adobe® website. CONTACT A SALES REPFind your Stowers sales rep by entering your ZIP code. |
