daniel stalters stephen pollock zachary markow source: motoroid
Post on 17-Jan-2016
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HCCI ENGINESHOMOGENOUS CHARGE COMPRESSION IGNITION
Daniel Stalters
Stephen Pollock
Zachary Markow
Source: Motoroid
Why should you care? Everyone drives a car Rising gas prices Increased emission limits
Source: King Abdullah University of Science and Technology
Outline 1.0 Engine Overview
• Spark Ignition• Compression Ignition
2.0 HCCI Engines• Benefits• Thermodynamics• Performance• Emissions
3.0 Technical Issues• Supportive Technology
4.0 Feasibility 5.0 Conclusion
Engine Overview
Source: Engine Basics
1. Induction Stroke
2. Compression Stroke
3. Power Stroke
4. Exhaust Stroke
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Spark Ignition
Source: Motoropia
SI
Homogenous Charge
Spark Plug
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Compression Ignition
Source: Mechanical Engineering Questions
CI
Autoignition
Diesel
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
HCCI
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Source: EPA
Homogenous Charge
Compression Ignition
Multi-fuel
Source: Fraser
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Benefits
Lower Combustion Temperature
Autoignition
Higher Compression Ratios
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Thermodynamics
Source: Transport Canada
Control of engine inputs
Recompression
Recirculation
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Performance
Source:
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Emissions
Source: Frost-Sullivan Market Insights
Decrease NOx
Decrease PM
Increase HC, CO
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Technical Issues and Concerns
Source: Polaris ATV Forum
Limited operational range
Intake valve fatigue
Increased HC and CO
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Solutions
Source:
Variable valve timing
Narrow injection spray
Exhaust gas recirculation
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Feasibility
Source:
Overview | Benefits | Thermodynamics | Performance | Emissions | Concerns | Feasibility
Conclusion
Engine overview
Major benefits of HCCI
Better efficiencies
Room for more research
Happening right now!
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