公开(公告)号：US09732721B2

公开(公告)日：2017-08-15

申请号：US14836421

申请日：2015-08-26

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Pin-Yung Chen ,  Chin-Hone Lin ,  Wen-Yen Chen ,  Shin-Hsiang Chien ,  Ta-Chuan Liu

IPC: F02N19/00 ,  F02D41/00 ,  F02D41/04 ,  F02N11/04

CPC classification number: F02N19/005 ,  F02D41/009 ,  F02D41/042 ,  F02D2041/0095 ,  F02D2250/24 ,  F02N11/04 ,  F02N2019/008

Abstract: A crankshaft rotating angle controlling method and a crankshaft rotating angle controlling system are provided. A shut-off signal is obtained, and an engine speed is judged. If the engine speed is lower than a specific value, a generator is set in a driving mode at an ending point of a missing tooth signal in a gear pulse signal, such that the generator in the driving mode drives a crankshaft to exceed a top-dead-center of a cylinder. When the crankshaft arrives at a bottom-dead-center of the cylinder, the generator is set to be in a holding mode of an error phase of a three-phase current. Through the generator in the driving mode, the given error phase of the three-phase current stops the generator immediately and the crankshaft is fixed within an angle range of a default stop position.