公开(公告)号：US20200224600A1

公开(公告)日：2020-07-16

申请号：US16832521

申请日：2020-03-27

Applicant: DENSO CORPORATION

Inventor： Yuki MURAYAMA ,  Ryozo KAYAMA ,  Yusuke TODO ,  Manabu YOSHIDOME

IPC: F02D41/14 ,  F01N11/00

Abstract: It is to determine whether a temperature rise condition of a first cell or a second cell is satisfied based on whether a first parameter has exceeded a predetermined first threshold or a second parameter has exceeded a predetermined second threshold. After satisfaction of the temperature rise condition, it is to determine that an exhaust gas sensor is in an active state upon determination that a corresponding time condition is satisfied.

公开(公告)号：US20170219513A1

公开(公告)日：2017-08-03

申请号：US15328732

申请日：2015-07-24

Applicant: DENSO CORPORATION

Inventor： Ryozo KAYAMA ,  Yukihiro YAMASHITA

IPC: G01N27/406 ,  G01N27/407 ,  G01N27/41

Abstract: A gas concentration detection device includes a pump cell, a sensor cell, a monitor cell, a sensor current detection unit detecting a current outputted by the sensor cell, a monitor current detection unit detecting a current outputted by the monitor cell, a voltage adjustment unit adjusting a pump cell voltage applied to the pump cell, and a sensitivity determination unit determining a gas sensitivity of at least one of the sensor cell or the monitor cell. The voltage adjustment unit changes the pump cell voltage from a target voltage into a detection voltage where the concentration of the residual oxygen supplied to the sensor cell and the monitor cell is increased. The sensitivity determination unit determines the gas sensitivity based on a detection current detected by at least one of the sensor current detection unit or the monitor current detection unit in accordance with the concentration of the residual oxygen.

公开(公告)号：US20170009685A1

公开(公告)日：2017-01-12

申请号：US15120615

申请日：2015-04-08

Applicant: DENSO CORPORATION

Inventor： Yoshihiro SAKASHITA ,  Yukihiro YAMASHITA ,  Ryozo KAYAMA

IPC: F02D41/06 ,  F02D41/14 ,  G01N27/417

CPC classification number: F02D41/064 ,  F02D41/146 ,  F02D41/1461 ,  F02D41/1494 ,  G01N27/4067 ,  G01N27/417

Abstract: A heater control device for an exhaust gas sensor disposed in an exhaust gas passage of an internal combustion engine and including a sensor element having a plurality of cells, and a heater heating the sensor element includes: a heater power control unit configured to execute a temp rising control, in which an impedance of one cell to be measured, of the plurality of cells, is detected and a temperature of the sensor element is raised until the impedance of the one cell reaches a target impedance by setting a power control value of the heater as a heating power control value. The heater power control unit continues the temp rising control until an extension period elapses that is needed for the other cell other than the one cell to reach an activation temperature after the impedance of the one cell reaches the target impedance.

Abstract translation: 一种用于排气传感器的加热器控制装置，其设置在内燃机的排气通道中，并且包括具有多个单元的传感器元件，以及加热所述传感器元件的加热器，包括：加热器功率控制单元，被配置为执行温度 检测多个单元中的一个要测量的单元的阻抗的上升控制，并且通过设置一个单元的功率控制值来提高传感器元件的温度，直到一个单元的阻抗达到目标阻抗 加热器作为加热功率控制值。 加热器功率控制单元继续温度升高控制，直到在一个单元的阻抗达到目标阻抗之后，一个单元之外的另一个单元所需的延长时间段达到激活温度。

公开(公告)号：US20140352637A1

公开(公告)日：2014-12-04

申请号：US14277101

申请日：2014-05-14

Applicant: DENSO CORPORATION

Inventor： Atsushi ITO ,  Ryozo KAYAMA ,  Shinichi SUGIURA ,  Yasuyoshi SUZUKI

IPC: F01L13/00

CPC classification number: F01L13/00 ,  F01L13/0063 ,  F01L2820/032

Abstract: An electric control device includes: a cam having a variable distance between an outer periphery and a center; a control shaft having one end, which contacts the outer periphery of the cam, and displaceable according to a rotation of the cam to adjust a valve lift amount; a motor rotating the cam; an angle detector detecting a rotation angle of the cam; and a controller. The cam includes multiple steps arranged on the outer periphery. The controller controls the rotation of the cam through the motor to match a detection angle of the angle detector with a target angle corresponding to a target valve lift amount. The controller stops rotating the cam through the motor when a difference between the detection angle and the target angle exceeds a first threshold, and the target angle corresponds to one of the steps.

Abstract translation: 电气控制装置包括：凸轮，其在外周和中心之间具有可变的距离; 控制轴，其一端与凸轮的外周接触，并且可根据凸轮的旋转而移位，以调节气门升程量; 旋转凸轮的电机 角度检测器检测凸轮的旋转角度; 和控制器。 凸轮包括设置在外周上的多个台阶。 控制器通过马达控制凸轮的旋转，以将角度检测器的检测角度与对应于目标气门升程量的目标角度相匹配。 当检测角度和目标角度之间的差超过第一阈值时，控制器停止通过马达旋转凸轮，并且目标角度对应于其中一个步骤。