公开(公告)号：US20210254588A1

公开(公告)日：2021-08-19

申请号：US17246804

申请日：2021-05-03

Applicant: DENSO CORPORATION

Inventor： Shuhei YAMAMOTO ,  Kazuhiro ONISHI

IPC: F02M59/06 ,  F02M63/00 ,  F02M63/02 ,  F02M59/36 ,  F02M59/34 ,  F02M59/44 ,  F02M37/18

Abstract: A high pressure fuel pump includes: a pump body that forms a suction passage and a pressurizing chamber and slidably supports a plunger; and a control valve that opens a connection between the suction passage and the pressurizing chamber in a suction stroke, during which the plunger is driven toward a suction side for suctioning fuel into the pressurizing chamber, while the control valve controls closing timing, at which the connection between the suction passage and the pressurizing chamber is closed by the control valve in a delivery stroke, during which the plunger is driven toward a delivery side for delivering the fuel out of the pressurizing chamber. The pump body forms a release passage that is communicated with the suction passage. The release passage relieves the fuel, which is pressurized by the plunger, from the pressurizing chamber before the closing timing during the delivery stroke.

公开(公告)号：US20220056864A1

公开(公告)日：2022-02-24

申请号：US17404337

申请日：2021-08-17

Applicant: DENSO CORPORATION

Inventor： Fumiaki ARIKAWA ,  Shuhei YAMAMOTO ,  Makoto OTSUBO ,  Takanobu AOCHI ,  Yasuyuki HASEO ,  Shingo KITANI ,  Hajime KATAOKA ,  Satoshi HORITA

IPC: F02D41/20 ,  F02D41/30 ,  F02D41/06 ,  F02D41/22

Abstract: A fuel injection device includes: an injector, an electronic control device, a communication circuit, and a power supply circuit. A memory is provided in the injector for storing fuel injection control data set for each injector. The electronic control device controls a fuel injection of the injector based on the control data. The communication circuit is installed for each injector, and enables the electronic control device to access the memory via wireless communication. The power supply circuit is installed for each injector, has a power source that supplies electric power to the communication circuit, and receives electric power to charge the power source from a drive line that connects the electronic control device and a drive unit of the injector.

公开(公告)号：US20210404352A1

公开(公告)日：2021-12-30

申请号：US17473503

申请日：2021-09-13

Applicant: DENSO CORPORATION

Inventor： Makoto OTSUBO ,  Kenichi TOMOMATSU ,  Shuhei YAMAMOTO ,  Hiroki TAKAHASHI ,  Soichi KINOUCHI

IPC: F01L1/352

Abstract: A drive-side rotor is rotated synchronously with a crankshaft. A driven-side rotor is rotated integrally with a camshaft. An internal gear section is formed at the driven-side rotor. An Oldham coupling includes: a driven Oldham flange that is formed at the drive-side rotor; a drive Oldham flange that is formed at the planetary rotor; and an Oldham intermediate that is configured to synchronize rotation of the driven Oldham flange and rotation of the drive Oldham flange while permitting eccentricity between the driven Oldham flange and the drive Oldham flange. There is satisfied a relationship of θ2

公开(公告)号：US20210285344A1

公开(公告)日：2021-09-16

申请号：US17338350

申请日：2021-06-03

Applicant: DENSO CORPORATION

Inventor： Makoto OTSUBO ,  Hiroki TAKAHASHI ,  Kenichi TOMOMATSU ,  Shuhei YAMAMOTO

IPC: F01L1/344

Abstract: A bearing portion of a planetary rotatable body for providing bearing support in a thrust direction is defined as a planetary thrust bearing portion. A driving-side rotatable body or a driven-side rotatable body, which is configured to contact the planetary thrust bearing portion in the thrust direction, is defined as a specific rotatable body. A bearing portion of the specific rotatable body for providing bearing support in the thrust direction is defined as a specific thrust bearing portion. In a parallel state where the specific thrust bearing portion and the planetary thrust bearing portion are parallel to each other, the specific thrust bearing portion and the planetary thrust bearing portion contact with each other only on one of an eccentric side and a counter-eccentric side of the planetary rotatable body while the counter-eccentric side is opposite to the eccentric side.

公开(公告)号：US20180372048A1

公开(公告)日：2018-12-27

申请号：US15962210

申请日：2018-04-25

Applicant: DENSO CORPORATION

Inventor： Shuhei YAMAMOTO ,  Kazuhiro ONISHI

IPC: F02M63/00 ,  F02M63/02 ,  F02M59/36

Abstract: A high pressure fuel pump includes: a pump body that forms a suction passage and a pressurizing chamber and slidably supports a plunger; and a control valve that opens a connection between the suction passage and the pressurizing chamber in a suction stroke, during which the plunger is driven toward a suction side for suctioning fuel into the pressurizing chamber, while the control valve controls closing timing, at which the connection between the suction passage and the pressurizing chamber is closed by the control valve in a delivery stroke, during which the plunger is driven toward a delivery side for delivering the fuel out of the pressurizing chamber. The pump body forms a release passage that is communicated with the suction passage. The release passage relieves the fuel, which is pressurized by the plunger, from the pressurizing chamber before the closing timing during the delivery stroke.