CONTROL UNIT OF SUPERCHARGER

摘要

PURPOSE:To perform the optimum control by controlling the turbine nozzle of a supercharger in response to the operational condition of an internal-combustion engine. CONSTITUTION:A variable-pitch nozzle 7 is provided upstream the blades of a turbine 5. An intake air pressure signal from an intake air pressure detector 14 via a line 15 and a load signal from a load detector 24 via a line 19 are inputted to a divider 13. A target value outputted from a constant setter 21 is subtracted from the output signal of the divider 13 at a subtractor 22, and the deviation signal is inputted to an amplifier 12. The amplified deviation signal is fed to a limiter 11. The limiter 11 sets the upper and lower limits in response to the variable range of the nozzle pitch. A signal from a control circuit 10 is inputted to a drive section 9 via a line 20 to drive a variable-pitch nozzle.