Different Boosting Systems and their Control Strategies for a Spark Ignition Internal Combustion Engine

Abstract

This research uses 1-D simulation in GT-Power for evaluation of boosting systems for a spark ignition engine. Exhaust gas driven (waste-gated turbocharger) and mechanical driven (Roots blower) boosting systems are assessed in both steady state and transient modes in terms of performance, efficiency, fuel consumption, drivability, energy distribution and other aspects that influence gas exchange phase. Moreover, different boost control strategies, particularly at partial load, are also evaluated. Results of the research are aimed at helping identify an optimal boosting system for standardized or real-world drive cycles.

Keywords

• Downsizing
• Downspeeding
• Boosting Systems
• Turbocharger
• Roots Supercharger
• Waste-Gate Control
• Load Change
• Spark Ignition Engine
• Supercharger Clutch
• 1-D Simulation