| 摘要 |
The process concerns an engine which has at least one cylinder (5) and is provided with a forced-induction set comprising a turbine (8) and a compressor (2). During the compression stroke, the cylinder is supplied by the forced-induction set with fresh air, into which fuel is injected towards the end of the compression stroke. Of the quantity of exhaust gas formed in the cylinder during each combustion process, an amount between at least 5 and at most 40 per cent by weight, preferably no more than 20 per cent by weight, is retained in the cylinder (5). This retained quantity of exhaust gas mixes with the fresh air flowing in during the next compression stroke and the oxygen concentration in the cylinder is thereby reduced. |
