| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of correcting fuel pumping characteristic variation of a high pressure pump having high versatility and convenience.SOLUTION: When a vehicle is in a warm-up operating condition, a fuel pumping characteristic variation correction device 102 makes acquisition of a rail pressure characteristic prior to the performance of variation correction via an electronic control unit 4 (S200). Based on the rail pressure characteristic obtained, the calculation of a correction factor for variation correction is performed with the fuel pumping characteristic variation correction device 102 (S300). Acquisition of rail pressure characteristic after variation correction has been performed (S400) is carried out via the electronic control unit 4. If the acquired rail pressure characteristic after variation correction has been performed is found to be within the frame of reference and the variation correction is determined to be adequate (S500), then the previously acquired correction factor is to be stored in the electronic control unit 4 as a learning value (S600). |
