The authors have been conducting studies on the reduction of exhaust emissions using a high speed diesel engine with a bore of 110 mm and a maximum speed of 2 500 rpm. By applying composite countermeasures consisting of five items ; 1) timing retard, 2) optimization of fuel injection system, 3) water-in-oil type emulsified duel, 4) application of ignition improver and 5) an increase in air flow quantity, an exhaust NOx level about a half of the original was attained while retaining the original low levels of fuel consumption, smoke density and engine noise. Especially, in combustion tests on water-in-oil type emulsified fuel, it is clearly demonstrated that not only exhaust NOx but also smoke density are significantly reduced due to an increase in the excess air ratio of the fuel spray.
|Number of pages||7|
|Journal||Transactions of the Japan Society of Mechanical Engineers Series B|
|Publication status||Published - 1988|
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanical Engineering