METHOD AND ASSEMBLY FOR DETERMINING A SMOKE LIMITING CHARACTERISTIC DIAGRAM OF AN INTERNAL COMBUSTION ENGINE

摘要

The creation of a smoke limiting characteristic diagram is a complex process which requires highly qualified and highly experienced technical knowledge. In order to reduce the complexity for creation, according to the invention a number of load jumps are carried out for a number of speeds and the opacity O is measured and compared to an opacity limit Olimit, wherein each speed n is begun at a predefined minimal combustion air ratio ?min and each load jump is repeated while increasing the last combustion air ratio ? by one combustion air ratio increment ?inc until the measured opacity lies below a predefined opacity limit Olimit.