A type of internal combustion engine that uses low-volatility petroleum fuel and fuel injectors and initiatescombustion using compression ignition (as opposed to spark ignition that is used with gasoline engines)
California Air Resources Board ARB (California Environmental Protection Agency), glossary of air pollution terms, Sacramento, CA, USA 2013. http://www.arb.ca.gov/html/gloss.htm, (Air Pollut - Amer) {594}