Since the 21st century, people's increasing attention to fuel economy and environmental issues has prompted engine research community continuously develop new efficient clean combustion theories methods. In terms of technology, many researchers have proposed different methods, such as homogeneous charge compression ignition (HCCI), premixed (PCCI), reaction controlled (RCCI), which are three ma...

A three-dimensional CFD modeling was carried out to investigate effects of VVT/VVA on gas exchange and fuel-air mixing processes in a diesel HCCI engine with early fuel injection. Four VVT/VVA strategies were conducted for this study: i) NVO strategy with fixed EVO and IVC timings but variable valve lifts – referred as NVO Strategy; ii) NVO strategy with fixed valve profiles but variable EVO an...

One of the popular ways to minimise impact emissions produced by engines is enabling alternative fuels. Out many trending options for fuels, biogas provides some unique advantages, such as being considered be environmentally friendly, obeying laws renewable energy and generating smallest carbon footprints. The two major drawbacks traditional diesel are their high rate NOx significant amount soo...

This paper presents an approach to model-based controller development for Homogeneous Charge Compression Ignition (HCCI). The control strategy for HCCI is based on a physical two state discrete time model of the process. As the trapped exhaust is pivotal in setting up the cyclic coupling, its temperature and the amount of oxygen present in it are selected as the states of the system. The model ...

Advanced combustion systems that utilize different modes and alternative fuels have significantly improved performance emissions compared to conventional diesel or spark-ignited combustions. As an fuel, dimethyl ether (DME) has been receiving much attention as it runs effectively under low-temperature (LTC) such homogeneous charge compression ignition (HCCI) reactivity control (RCCI). Under com...