Emissions Control Challenges for Compression Ignition Engines

Emissions Control Challenges for Compression Ignition Engines

As emission standards continue to evolve, it is clear that future engine control strategies will involve the integration of combustion optimization, fuel refinement and advanced exhaust after-treatment technologies. The West Virginia University (WVU) Center for Alternative Fuels Engines and Emissions (CAFEE) continues to engage the challenge of future regulation in a multi-pronged approach, inv...

Homogenous Charge Compression Ignition (HCCI) Engines

Diesel and Spark Ignition Engines Emissions and After-Treatment Control: Research and Advancements

One of the major risks mankind has encountered during recent years is, without a doubt, the anthropogenic contribution to environmental pollution. This has posed a substantial burden on human health, but also on the global economy. The pollutants that are now widely recognized as the most harmful to humans are particulate matter (PM), nitrogen dioxide (NO2) and ground-level ozone (smog) [1,2]. ...

Sliding Mode Idle Speed Ignition Control Strategies for Automotive Engines

In recent years it has become apparent that control system design based on conventional linear transfer function or state-variable feedback suffers from several serious disadvantages including: i) It requires an accurate model, which cannot be attained by current identification procedures ii) The control is not robust to unstructured uncertainties such as additive or multiplicative parameter va...

Effect of Hydrogen Addition to Natural Gas on Homogeneous Charge Compression Ignition Combustion Engines Performance and Emissions Using a Thermodynamic Simulation

The HCCI combustion process is initiated due to auto-ignition of fuel/air mixture which is dominated by chemical kinetics and therefore fuel composition has a significant effect on engine operation and a detailed reaction mechanism is essential to analysis HCCI combustion. A single zone-model permits to have a detailed chemical kinetics modeling for practical fuels. In this study a single-zone ...