CONTROLLER FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINE

A controller for an internal combustion engine includes processing circuitry. The processing circuitry performs a dither control process and a multi-injection process. Multiple injections in the multi-injection process includes a first injection and a second injection performed at a timing retarded from the first injection. The dither control process includes at least one of a process performed ona cylinder changed to a lean combustion cylinder so that a reduction amount of fuel injected through the first injection is greater than a reduction amount of fuel injected through the second injection and a process performed on a cylinder changed to a rich combustion cylinder so that an increase amount of fuel injected through the first injection is greater than an increase amount of fuel injected through the second injection. 一种内燃机的控制装置，包括处理电路(processing circuitry)，该处理电路执行抖动控制处理和多喷射处理。多喷射处理中的多次喷射包括第1喷射、和在比第1喷射靠延迟侧的正时进行的第2喷射。抖动控制处理包括如下处理中的至少一方：对于变更为稀燃烧汽缸的汽缸，使得第1喷射中的燃料喷射量的减少量比第2喷射中的燃料喷射量的减少量大的处理；和对于变更为浓燃烧汽缸的汽缸，使得第1喷射