摘要 |
An electronic control unit, in an idle operating state, detects a crankshaft rotation fluctuation in each cylinder using a crank angle sensor, and updates an individual correction value for a control value for each fuel injection valve as a first learned value such that a degree of deviation in the crankshaft rotation fluctuation among the cylinders reduces. The electronic control unit uses a fuel pressure sensor to detect a manner of a fuel pressure fluctuation with fuel injection by each fuel injection valve, and updates an individual correction value for a control value for each fuel injection valve as a second learned value based on a result of comparison between a detected temporal waveform and a basic temporal waveform. In an idle operating state, a learning rate of the second learned value is reduced until the first learned value converges for the first time as compared with after its convergence. |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;DENSO CORPORATION;MIYAURA, TAKESHI;ITO, YOSHIYASU;SUZUKI, RYO;TSUIKI, TOYOMORI;YAMADA, NAOYUKI |
发明人 |
MIYAURA, TAKESHI;ITO, YOSHIYASU;SUZUKI, RYO;TSUIKI, TOYOMORI;YAMADA, NAOYUKI |