公开(公告)号：US20180030906A1

公开(公告)日：2018-02-01

申请号：US15659837

申请日：2017-07-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke SASAKI ,  Akira EIRAKU ,  Masanori HATTORI ,  Yoshiyuki KAGEURA ,  Teppei YOSHIOKA ,  Shinichi HIRAOKA

IPC: F02D15/02 ,  F02D33/02

CPC classification number: F02D15/02 ,  F02D33/02 ,  F02D41/1498 ,  F02D2200/1015 ,  F02D2250/18 ,  G01M15/11

Abstract: To improve accuracy in misfire determination, a control apparatus for an internal combustion engine that controls an internal combustion engine having a variable compression ratio mechanism capable of changing the compression ratio of the internal combustion engine includes a controller configured to: determine that a misfire occurs if the magnitude of rotational fluctuation of the internal combustion engine is equal to or larger than a misfire criterion value and to make the misfire criterion value larger during the time in which changing of the compression ratio of the internal combustion engine is in progress than during the time in which the compression ratio is not being changed.

公开(公告)号：US20180038297A1

公开(公告)日：2018-02-08

申请号：US15665699

申请日：2017-08-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke SASAKI ,  Akira EIRAKU ,  Masanori HATTORI ,  Yoshiyuki KAGEURA ,  Teppei YOSHIOKA ,  Shinichi HIRAOKA

IPC: F02D41/00 ,  F02D41/04 ,  F02D15/02 ,  F02D41/30

CPC classification number: F02D41/0085 ,  F02D15/02 ,  F02D35/023 ,  F02D35/028 ,  F02D41/008 ,  F02D41/047 ,  F02D41/3064 ,  F02D41/3094 ,  F02D2041/389

Abstract: A control system is applied to an internal combustion engine having a plurality of cylinders, a variable compression ratio changer configured to change the compression ratio of each of the cylinders of the internal combustion engine individually, in-cylinder injection valves that inject fuel into the respective cylinders, and in-passage injection valves each of which injects fuel into an intake passage corresponding to each of the cylinders. To reduce differences in the air-fuel ratio among the cylinders during changing the compression ratio, the control system makes the proportion of the quantity of fuel injected through the in-passage injection valves to the total quantity of fuel injected through the in-cylinder injection valves and the in-passage injection valves larger during the time in which the compression ratios of all the cylinders are being changed than during the time in which the compression ratios of all the cylinders are fixed.