Direct Injection Spark Ignition (DISI) Engine Research
Overview
For over a century in the history of internal combustion engines, two concepts have played a dominant role during the process of development and production. The spark ignition or gasoline engine shows the distinctive feature of high specific power and large speed range due to its good level of air utilisation; whilst the compression ignition or Diesel engine, offers better thermal efficiency from the use of a higher compression ratio, and the absence of throttling. Combining the positive aspects of these two engine types has always been a goal of engine research and development in the automobile industry, and the Direct Injection Spark Ignition (DISI) engine is seen as one of the most promising ways to achieve this aim.
The concept of DISI engines has gained a resurgence of interest in recent years as a way of reducing both fuel consumption and emissions under the current strict legislations, owing to the improvements in fuel injection technology as well as advances in the understanding of the processes involved in mixture preparation and stratified charge combustion.
The following topics about DISI engine have been investigated in Oxford:
- Effect of Fuel Volatility on Volumetric Efficiency
- Combustion Photography and Soot Diagnostics
- Effect of Charge Cooling
- Effect of Charge Stratification on NO Emissions
Involved Parties
Group : C.R. Stone, L. P. Wyszynski
Project Support : EPSRC, Shell.
Direct Injection Principle
Last modified 14 December 2007 by WEBNOBODY.