Diesel engines have been using internal mixing in the swirl chamber and combustion chamber for a relatively long time (compared to petrol engine). The maximum number of revolutions of the diesel is therefore limited, otherwise it works uneconomically. Due to the supply of more air for ignition, a better filling of the cylinders is achieved.
Essentially, a turbocharger consists of two paddle wheels on the same shaft. Through one of them (1) passing the exhaust gases of the engine and the shaft in accordance with the number of revolutions of the engine rotates faster or slower. Associated second paddle wheel (2) rotates, of course, with it and directs the drawn in air - now under pressure - into the combustion chamber, due to which «greedy» before air, the diesel engine spins up to a higher power. The increased intake of air from the turbo must be in «consent» with injection pump. This is achieved by boost pressure enrichment, which doses slightly more fuel depending on the boost pressure. There should not be too much fuel either, otherwise the proportion of soot in the exhaust gases increases. In addition, the catalyst only works optimally when a sufficient amount of air predominates during combustion.
Visitor comments