AIR FLOW RATE SENSOR CALIBRATION DEVICE AND AIR FLOW RATE SENSOR CALIBRATION VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide an air flow rate sensor calibration device that allows calibration by off-road test run and achieves improvement in detection accuracy of the intake air quantity, and an air flow rate sensor calibration vehicle.;SOLUTION: The air flow rate sensor calibration device 1 is detachably connected to an ECM 6 in order to control each part of a vehicle 2 via the ECM 6. The device includes: an EGR complete shut-off control part 8 for completely shutting off an EGR valve 7; a basic formula calculation part 9 which calculates the intake air quantity by a basic formula while using the manifold air pressure, the intake air temperature, and the engine speed as input variables; a volumetric efficiency correction calculation part 10 which corrects and calculates a variation by multiplying the value, calculated by the basic formula, by a correction term; and a calibrated value writing part 11 which learns a difference between the calculated value of the intake air quantity and a value detected by an MAF sensor 5 and writes the difference as the calibrated value in the ECM 6.;COPYRIGHT: (C)2013,JPO&INPIT