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!