公开(公告)号：US20200033180A1

公开(公告)日：2020-01-30

申请号：US16595593

申请日：2019-10-08

Applicant: DENSO CORPORATION

Inventor： Isao MIYAGAWA ,  Atsushi HONDA

IPC: G01F23/296 ,  G01N29/34

Abstract: A liquid level detector includes an ultrasonic sensor that emits an ultrasonic wave toward a liquid surface of liquid in a tank, a driving circuit unit that provides a driving signal to the ultrasonic sensor to emit the ultrasonic wave, a reception circuit unit that detects a reflected wave signal that corresponds to a reflected wave from a received signal received by the ultrasonic sensor, and an arithmetic control circuit unit that computes a level of the liquid surface with the reflected wave signal. The liquid level detector further includes an inclination detection unit that detects an inclination of the liquid surface relative to a virtual surface orthogonal to a direction of the ultrasonic wave and a driving condition computing circuit unit that instructs the driving circuit unit to increase a strength of the driving signal as the inclination of the liquid surface detected by the inclination detection unit increases.

公开(公告)号：US20220356860A1

公开(公告)日：2022-11-10

申请号：US17870064

申请日：2022-07-21

Applicant: DENSO CORPORATION

Inventor： Keita IMAI ,  Atsushi HONDA

IPC: F02M55/00 ,  F02M61/10

Abstract: A fuel injection valve includes a nozzle, a housing, a needle, and a throttle portion. The nozzle includes an injection hole through which fuel is injected and a valve seat formed around the injection hole. The nozzle includes an injection hole through which fuel is injected and a valve seat formed around the injection hole. The housing has a fuel flow path through which the fuel to the injection hole flows. One end of the needle is configured to open and close the injection hole by being separated from the valve seat or abutted on the valve seat. The throttle portion is provided upstream with respect to the valve seat in a fuel flow direction.

公开(公告)号：US20210156722A1

公开(公告)日：2021-05-27

申请号：US17168755

申请日：2021-02-05

Applicant: DENSO CORPORATION

Inventor： Yuusuke YOSHIDA ,  Atsushi HONDA ,  Kazuaki UEDA ,  Kengo ITO

IPC: G01F1/69

Abstract: A flow rate measurement device includes a housing having a main flow path, a sub flow path formed inside the housing to allow a part of a fluid to be detected flowing through the main flow path, an inlet portion that allows the fluid to be measured flowing in the main flow path to flow into the sub flow path, an outlet portion that allows the fluid to be measured flowing in the sub flow path to flow out to the main flow path, a flow rate detection unit that is provided between the inlet portion and the outlet portion in the sub flow path and detects a flow rate of the fluid to be measured flowing through the sub flow path, and a communication hole that is provided between the flow rate detection unit and the outlet portion and communicates the sub flow path and the main flow path.

公开(公告)号：US20200033181A1

公开(公告)日：2020-01-30

申请号：US16595597

申请日：2019-10-08

Applicant: DENSO CORPORATION

Inventor： Isao MIYAGAWA ,  Atsushi HONDA

IPC: G01F23/296 ,  G01N29/34

Abstract: A liquid level detector includes an ultrasonic sensor that emits an ultrasonic wave toward a liquid surface of liquid in a tank, a driving circuit unit that provides a driving signal to the ultrasonic sensor to emit the ultrasonic wave, a reception circuit unit that detects a reflected wave signal that corresponds to a reflected wave from a received signal received by the ultrasonic sensor, and an arithmetic control circuit unit that computes a level of the liquid surface with the reflected wave signal. The liquid level detector further includes a temperature detection unit that detects a temperature of the liquid and a driving condition computing circuit unit that instructs the driving circuit unit to increase a strength of the driving signal as the temperature of the liquid that is detected by the temperature detection unit decreases.

公开(公告)号：US20170194769A1

公开(公告)日：2017-07-06

申请号：US15304941

申请日：2015-04-15

Applicant: DENSO CORPORATION

Inventor： Aki MIYAWAKI ,  Atsushi HONDA ,  Syoichi TAKEMOTO ,  Akihiro ANDO ,  Takanobu AOCHI ,  Masamichi SHIBATA

IPC: H01T13/02 ,  H01T13/00

CPC classification number: H01T13/02 ,  H01T13/00 ,  H01T13/20 ,  H01T13/36

Abstract: A spark plug 5 for an internal combustion engine includes a center electrode 1, an insulator 2, and a housing 3. The insulator 2 includes a distal end side exposed part and an insulator enlarged diameter part 21. The housing 3 includes a lateral electrode 32, an engaging part 33, and a crimping portion 35. A buffer member 4 that restrains the distal end side exposed part 20 by pressing a part of the distal end side exposed part 20 toward the center and a part of the inner peripheral surface of the lateral electrode 32 in a radial direction at a distal end side of the engaging part 33 is disposed at a base end side of the gas pocket 230.