Browse Publications Technical Papers 2012-01-0721
2012-04-16

Reduction of Transient Particulate Matter Spikes with Decision Tree Based Control 2012-01-0721

Decision trees have been proposed as a basis for modifying table-based injection to reduce transient particulate spikes during the turbocharger lag period. It has been shown that decision trees can detect particulate spikes in real time. In well-calibrated electronically controlled diesel engines these spikes are narrow and are encompassed by a wider NO
spike. Decision trees have been shown to pinpoint the exact location of measured opacity spikes in real time thus enabling targeted PM reduction with near zero NO
penalty. A calibrated dimensional model has been used to demonstrate the possible reduction of particulate matter with targeted injection pressure pulses. Post injection strategy optimized for near stoichiometric combustion has been shown to provide additional benefits. Empirical models have been used to calculate emission tradeoffs over the entire FTP cycle. An empirical model-based transient calibration has been used to demonstrate that such targeted transient modifiers are more beneficial at lower engine-out NO
levels.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

Influence of Inlet Pressure, EGR, Combustion Phasing, Speed and Pilot Ratio on High Load Gasoline Partially Premixed Combustion

2010-01-1471

View Details

TECHNICAL PAPER

Inverted Brayton Cycle as an Option for Waste Energy Recovery in Turbocharged Diesel Engine

2019-24-0060

View Details

TECHNICAL PAPER

Comprex-Supercharging eliminates Trade-off of Performance, Fuel Economy and Emissions

881152

View Details

X