公开(公告)号：US20180266287A1

公开(公告)日：2018-09-20

申请号：US15914577

申请日：2018-03-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shingo OKAZAWA ,  Michitaka YAMAMOTO

IPC: F01M1/16 ,  F01M1/02 ,  F16N27/02 ,  F16N13/20 ,  F16N7/38

CPC classification number: F01M1/16 ,  F01M1/02 ,  F01M2001/0238 ,  F01M2001/0246 ,  F16N7/38 ,  F16N13/20 ,  F16N27/02 ,  F16N2210/04 ,  F16N2250/04 ,  F16N2250/08 ,  F16N2270/70 ,  F16N2280/00

Abstract: An oil supply device includes an oil pump and an oil control valve. The oil control valve is connected to a control oil chamber of the oil pump via a control oil passage that includes an oil descent passage and an oil rise passage. One end of the oil descent passage on the control oil chamber side is disposed at a position closer to a bottom of the vehicle than the other end on the oil control valve side. The oil rise passage is disposed at a position closer to the control oil chamber side than the oil descent passage. One end of the oil rise passage on the control oil chamber side is disposed at a position closer to a top of the vehicle than the other end on the oil control valve side.

公开(公告)号：US20200131956A1

公开(公告)日：2020-04-30

申请号：US16570383

申请日：2019-09-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shingo OKAZAWA

IPC: F01M1/20 ,  F04C2/10 ,  F16H57/04 ,  F16H55/17 ,  F01M1/16

Abstract: A control system for an oil supply mechanism includes an oil pump, a hydraulic pressure sensor, a drive shaft, a pump pulley, a toothed belt, and an output shaft. An electronic control unit included by the control system detects an abnormality of the toothed belt based on a comparison result between an actual value and a theoretical value that are frequencies of pressure pulsations of oil. The actual value is a value calculated based on time fluctuations of a hydraulic pressure detected by the hydraulic pressure sensor. The theoretical value is a value calculated based on a rotational speed of the output shaft and the number of teeth of an inner rotor.