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Emissions * Machine Emissions Solutions  
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Machine Emissions Solutions

Clean Diesel
HOLT CAT® offers a full line of Tier 4 Interim engines for every application--with optimized emissions solutions tailored for each application. Compared to earlier Tier 3 levels, Tier 4 Interim standards achieve a 90 percent reduction in particulate matter emissions and a 50 percent decrease in the emission of nitrogen oxides. With Cat® Tier 4 Interim engines in your fleet, you can have even more confidence in your business' economic and environmental performance.  Learn more about Tier 4 standards.

Electric-Diesel
HOLT CAT offers the revolutionary Cat D7E tractor, an all-new class of tractor that delivers the best possible balance of heavy-dozing and fine-grading performance with improved productivity and efficiency. The innovative diesel-electric powertrain is designed to burn considerably less fuel and consume fewer fluids and parts for reduced owning and operating costs. 

Emissions Repowers
An Emissions Repower offered by HOLT CAT and Cat Emissions Solutions will reduce exhaust emissions from existing Cat machines by replacing an in-use engine with a new or Cat Reman engine that achieves lower emissions levels, providing the benefits of emission reduction technologies not available in the past. Where appropriate, repower engines include ACERT Technology that not only lowers emissions to compliant levels, but also enhances overall engine performance.

Emissions Upgrades:   A Cat Emissions Upgrade uses new Cat parts and components to upgrade your existing engine and reduce emissions. Upgrades include a turbocharger, fuel pump/governor, nozzles, cylinder packs, jacket water aftercooler (as required), and installation parts.

Caterpillar® Non-road Diesel Particulate Filters
Caterpillar Non-road Diesel Particulate Filters are California ARB verified as a Level 3+ (>85% PM reduction) technology. California ARB verification is recognized where EPA-verified technologies are required. DPF performance:

  • PM (diesel particulate matter) reduction: > 85% (verified)
  • CO (carbon monoxide) reduction: 90% (estimated)
  • HC (hydrocarbon) reduction: 80% (estimated)
  • NOx (oxides of nitrogen) reduction: none (meets CARB 20% NO2 slip requirement)
  • Noise attenuation: comparable to original muffler
  • Method of regeneration: passive, provided exhaust temperature profile is adequate

 


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