EXHAUST REFLUX DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3421120
PURPOSE: To avoid variation of an exhaust reflux rate due to fluctuation of temperature and voltage, which circulation rate is adjusted by duty controlling of a linear solenoid type throttle valve.
CONSTITUTION: A valve body position of a throttle valve is detected (S4). The detected valve body position is compared to a target valve body position corresponding to a target opening ER (S50). When the actual opening is smaller than the target opening ER, control duty is increased by a correction value ΔI corresponding to a deviation of opening, such that the actual opening approaches the target opening ER (S6, S7, S10). Similarly, when the actual opening is larger than the target opening ER, the control duty is decreased by the correction value ΔI corresponding to the deviation of the opening, such that the actual opening approaches the target opening ER (S8, S9, S10).
More Like This:
April 18, 2003
April 27, 1994
UNISIA JECS CORP
F02M25/07; F02D41/02; F02D45/00; (IPC1-7): F02M25/07; F02D41/02; F02D45/00