To provide a diesel engine and a control method for the diesel engine achieving improvement of a state of exhaust gas, improvement of fuel economy, and reduction of combustion noise of the engine due to stabilization of premixed compression ignition combustion, and expanding a premixed combustion operation area by setting compression ratio of a cylinder, an injection hole diameter of a fuel injection nozzle, and swirl ratio in a range suitable for premixed compression ignition combustion.
In the diesel engine including a control device controlling operation with an engine operation range divided into a normal combustion operation zone V2 in which normal combustion of combustion in the cylinder of the engine is done and a premixed combustion operation zone V1 in which premixed compression ignition combustion is done, compression ratio of the cylinder is set to a range of 15.5-16.5, injection hole diameter of a fuel injection nozzle is set to a range of 0.090-0.120 mm, and a variable swirl system is provided.
UEDA TAKAHIRO
OKUBO YASUHIRO
| JP2003286886A | 2003-10-10 | |||
| JP2005155603A | 2005-06-16 | |||
| JPH09228838A | 1997-09-02 | |||
| JP2000274286A | 2000-10-03 | |||
| JP2004100557A | 2004-04-02 | |||
| JP2006029292A | 2006-02-02 | |||
| JP2006105046A | 2006-04-20 | |||
| JP2002180881A | 2002-06-26 |
Takashi Noguchi
Kazuhiko Saishita