| 摘要 |
<p>PURPOSE:To improve load followableness ever so better, by calculating a decremental portion in a nozzle pitch at acceleration in time of detecting the accelerating period, while compensating a fundamental opening of the nozzle pitch according to the decremental portion, in case of a supercharger fitted with a variable pitch nozzle. CONSTITUTION:In case of such one that installs a variable pitch nozzle 7 at the upstream side of a blade 6 to be installed in the circumference of a turbine 5 of a supercharger 1, the variable pitch nozzle 7 is controlled by actuation of a driving part 9 to be controlled by a control circuit 10 via a link 8. The control circuit 10 is provided with a devider 13 calculating the value of a ratio between a charging pressure signal out of a charging pressure detector 14 and a load signal out of a load detector 23, and inputs a deviation between this output signal and the desired value of a constant setter 21 into a subtractor 33 as a nozzle pitch fundamental opening signal. And, in accordance with a control deviation signal based on acceleration from a speed control circuit 24, the said fundamental opening signal is compensated with the subtracter 33 whereby the driving part 9 is controlled according to a compensation opening signal.</p> |
