3
Engine with ACERT™ Technology
Innovative technologies optimize performance.
ACERT Technology
The Cat
®
C15 ACERT™ engine continues the evolutionary,
incremental improvements that provide breakthrough engine
technology built on systems and components developed by
Caterpillar with proven reliability.
Cat Clean Emissions Module (CEM)
CEM is an exhaust aftertreatment package consisting of a
diesel particulate lter and control systems. The CEM reduces
particulate emissions using passive and active regeneration
during normal engine operation.
Cat NOx Reduction System (NRS)
The Cat NOx Reduction System (NRS) captures and cools
a small quantity of exhaust gas, then routes it into the
combustion chamber where it drives down combustion
temperatures andreduces NOx emissions.
Fuel Delivery
Mechanically actuated Electronic Unit Injection (MEUI-C)
multiple injection fuel delivery involves a high degree of
precision. Precisely shaping the combustion cycle lowers
combustion chamber temperatures, generating fewer emissions
and optimizing fuel combustion. This translates into more
work output for your fuel cost.
Diesel Particulate Filter Regeneration
Regeneration
Regeneration is the removal of soot from the Diesel
Particulate Filter (DPF). The Aftertreatment Regeneration
Device (ARD) is used to regenerate the DPF.
The DPF traps both particulates and ash, the ash is removed
atregular service intervals.
Modes of Regeneration
When set to automatic, regeneration will occur without any
interaction from the operator. The three modes of regeneration
shown below allow the articulated truck to adapt to speci c
site conditions in the most ef cient manner.
Automatic “On-the-go” regeneration is initiated when the
engine control module determines conditions are acceptable.
The articulated truck is not required to stop working.
Automatic: Low Idle regeneration is initiated when the
machine is in a reduced operating mode for a predetermined
period of time, and a number of conditions are met.
Thesystem is designed sothat the operator can interrupt
regeneration at any time.
Manual: A manual regeneration is initiated by pressing
theregeneration switch for 5 seconds. The machine must
bebrought to a non-operating mode in order to perform
amanual regeneration.
