| 摘要 |
An adaptive control system for an internal combustion engine 24 has a selector 61 which selects in turn each cylinder or different combinations of cylinders for optimising performance. A perturbation generator 50 perturbs an engine control parameter, such as ignition timing, for the selected cylinder or combination in accordance with a first operational mode for an upper engine speed range and a second mode for a lower range. Means 51 - 55 measure the slope of engine output with respect to the perturbed control parameter in a first mode for the upper engine speed range and in a second mode for the lower range. The measured slope issued by means 37, 45 - 47, 57 - 61 to correct the engine control parameter. Memories 45a - 45d corresponding to each cylinder combination are updated with the respective correction value. |
