公开(公告)号：US10927772B2

公开(公告)日：2021-02-23

申请号：US16643439

申请日：2017-08-30

申请人： Nissan Motor Co., Ltd.

发明人： Kenji Suzuki ,  Tomoki Itou ,  Yukiyo Yamada

IPC分类号： F02D41/06 ,  F02D15/00 ,  F02D41/16 ,  F02D41/14 ,  F02D41/02

摘要： A control method for an internal combustion engine including a variable compression ratio mechanism which includes: implementing a compression ratio fixing control in which a mechanical compression ratio is fixed to a predetermined low compression ratio, and controlling combustion form in a cylinder to stratified combustion, under engine idling during catalyst warming-up; controlling the combustion form in the cylinder to homogeneous combustion, under an operation state other than the engine idling during the catalyst warming-up; and implementing the compression ratio fixing control and controlling the combustion form in the cylinder to the homogeneous combustion, in response to pressing-down of an accelerator under the engine idling during the catalyst warming-up, and as long as the engine idling during the catalyst warming-up has a possibility to resume in response to release of the accelerator after the pressing-down.