technology acert - caterpillar (presentation)
TRANSCRIPT
CAT®
ENGINES WITH
ACERT®
TECHNOLOGY
Off-Road
Tier 3 / Stage IIIa
Compliance
Caterpillar Innovations
Caterpillar Innovations
Caterpillar Innovations
EPA and European Union
Emissions Restricted
by EPA Standards
• Carbon Monoxide (CO)
• Hydrocarbons (HC)
• Non-Methane
Hydrocarbons (NMHC)
• Particulate Matter (PM)
• Oxides of Nitrogen
(NOx)
2005 Tier 3 / Stage IIIa
1 Million Less Tons NOx
by 2010
2005 Tier 3 / Stage IIIa
Equal to 35 Million Passenger Cars
Tier 4 / Stage IIIb
Tier 2
Stage II
Tier 3
Stage IIIa
Tier 4
Stage IIIb
90% • Beyond Tier 3
Field Testing
Off-Road
Field Testing with
Customers and Dealers
DEVELOPMENT
Developing ACERT
With One Goal in Mind
Possible Solutions
• Cooled EGR
• Non-Cooled EGR
With Compromises
EXHAUST GAS
RECIRCULATION – EGR
Cooled-EGR
Variable Geometry Turbo-Charger
EGR Cooler
EGR VALVE
2002 On-Highway Launch
Bulldozer Technology?
On-Highway Solution?
Engine Technology
Adaptable
Engine Technology
Comprehensive
Building Blocks
Core Concept
Advanced Combustion
Advanced Combustion
Electronics
Proven, Reliable
Electronics
Proven, Reliable
Fuel Delivery
Extremely Accurate
Fuel Delivery
Extremely Accurate
Fuel Delivery
Precisely Timed and Controlled
Air Management
Air Management
Proven Technologies
Air Management
Variable Valve Actuation
Adjust for Engine Load and Speed
Series Turbocharging
Improves Reliability, Extends Life
Series Turbocharging
Improves Reliability, Extends Life
Series Turbocharging
Wastegate Turbocharging
Smaller and Midsize Truck Engines
Wastegate Turbocharging
Smaller and Midsize Truck Engines
Aftertreatment
Aftertreatment
Residual Emissions CO2 + H20
Future Technology
Multiple Injection
HEUI
For Smaller Engines
MEUI
For Larger Engines
ACERT TECHNOLOGY
ACERT Technology
Enhances Combustion
ACERT Technology
Long Engine Life
Challenges Ahead
As We Move to Tier 4 / Stage IIIb
Flexible, Adaptable
Innovative, Effective