公开(公告)号：US20140020451A1

公开(公告)日：2014-01-23

申请号：US13910369

申请日：2013-06-05

Applicant: DENSO CORPORATION

Inventor： Tatsuya KITANAKA ,  Jun TARUI ,  Hiroshi NAKAMURA ,  Masato UENO ,  Dai OSADA ,  Sadahito FUKUMORI

IPC: G01N33/22

CPC classification number: G01N33/22

Abstract: A fuel property sensor includes an electrode portion, a first thermistor, a second thermistor, and a circuit portion. The electrode portion detects an electrostatic capacity varied according to an ethanol concentration in fuel as a fuel characteristic. The first thermistor is disposed in a flowing area inside the electrode portion, where the fuel flows through. The second thermistor is disposed in a non-flowing area where no fuel flows through. The circuit portion which computes the ethanol concentration based on the electrostatic capacity, a first detection value detected by the first thermistor, and a second detection value detected by the second thermistor. Thus, a fuel temperature can be properly detected, and a detection accuracy of the fuel characteristic can be improved.

Abstract translation: 燃料特性传感器包括电极部分，第一热敏电阻器，第二热敏电阻器和电路部分。 电极部检测根据燃料中的乙醇浓度而变化的静电容量作为燃料特性。 第一热敏电阻设置在燃料流过的电极部分内的流动区域中。 第二热敏电阻设置在没有燃料流过的非流动区域中。 基于静电电容计算乙醇浓度的电路部分，由第一热敏电阻检测的第一检测值和由第二热敏电阻检测的第二检测值。 因此，可以适当地检测燃料温度，并且可以提高燃料特性的检测精度。

公开(公告)号：US20140023115A1

公开(公告)日：2014-01-23

申请号：US13932122

申请日：2013-07-01

Applicant: Denso Corporation

Inventor： Masato UENO ,  Hiroshi NAKAMURA ,  Tatsuya KITANAKA ,  Dai OSADA

IPC: G01K7/22

CPC classification number: G01K7/22 ,  G01K13/02 ,  G01K2013/026 ,  G01N33/2852

Abstract: A fuel property sensor includes an external electrode, an internal electrode, a temperature detecting device, a holder portion, a sealing portion. The external electrode includes a passage portion and a projecting portion to define a transfer passage through which fuel flows. The internal electrode is disposed in the passage portion of the external electrode. The temperature detecting device detects a fuel temperature. The holder portion holds the temperature detecting device. The holder portion has a bottomed-cylindrical shape and disposed in the transfer passage and the through-hole of the internal electrode, or the holder portion has a cylindrical shape and disposed in the transfer passage. The sealing portion seals the transfer passage and prevents fuel flowing in the transfer passage from leaking outside.

Abstract translation: 燃料特性传感器包括外部电极，内部电极，温度检测装置，保持器部分，密封部分。 外部电极包括通道部分和突出部分，以限定燃料流过的输送通道。 内部电极设置在外部电极的通路部分中。 温度检测装置检测燃料温度。 保持部保持温度检测装置。 保持器部分具有底圆筒形状并且设置在内部电极的传送通道和通孔中，或者保持器部分具有圆柱形并且设置在传送通道中。 密封部分密封传送通道并防止在传送通道中流动的燃料泄漏到外面。

公开(公告)号：US20140095054A1

公开(公告)日：2014-04-03

申请号：US14097283

申请日：2013-12-05

Applicant: NIPPON SOKEN, INC. ,  DENSO CORPORATION

Inventor： Tetsuro SERAI ,  Noriyasu AMANO ,  Hiroki FUJIEDA ,  Hiroshi NAKAMURA ,  Akikazu UCHIDA

IPC: F02D41/02

CPC classification number: F02D41/02 ,  F02B2275/16 ,  F02D19/061 ,  F02D19/084 ,  F02D19/087 ,  F02D41/0025 ,  F02D2200/0611 ,  F02M19/08 ,  F02M37/0064 ,  F02M37/10 ,  Y02T10/123 ,  Y02T10/36

Abstract: At the time of shifting a fuel property value associated with a first imaginary passage cell as a fuel property value associated with a second imaginary passage cell located on the downstream side thereof, the fuel property value associated with the second imaginary passage cell is corrected in a controller by computing a difference between the fuel property value associated with the first imaginary passage cell and the fuel property value associated with the second imaginary passage cell and multiplying the difference by a correction coefficient. A stoichiometric air/fuel ratio is computed in the controller based on the fuel property value, which is associated with a last one of the imaginary passage cells. Fuel injection of an injector is controlled by the controller based on a computed injection quantity of fuel, which is computed based on the stoichiometric air/fuel ratio.

Abstract translation: 在将与第一虚设通道电池相关联的燃料特性值变换为与位于其下游侧的第二假想通道电池相关联的燃料特性值时，与第二假想通道电池相关联的燃料特性值在 控制器，通过计算与第一虚设通道单元相关联的燃料特性值与与第二虚部通道单元相关联的燃料特性值之间的差异，并将差乘以校正系数。 基于与最后一个虚拟通道单元相关联的燃料特性值，在控制器中计算化学计量空气/燃料比。 喷射器的燃料喷射由控制器基于计算的基于化学计量空气/燃料比计算的燃料喷射量来控制。

公开(公告)号：US20140020452A1

公开(公告)日：2014-01-23

申请号：US13916014

申请日：2013-06-12

Applicant: DENSO CORPORATION

Inventor： Masato UENO ,  Hiroshi NAKAMURA ,  Tatsuya KITANAKA ,  Dai OSADA

IPC: G01N33/22

CPC classification number: G01N33/22

Abstract: A fuel property sensor has an external electrode, an internal electrode, a temperature detecting device, a holder portion, a sealing portion, and a calculation unit. The external electrode includes a passage portion and a projecting portion. The internal electrode is disposed in the passage portion of the external electrode at a predetermined distance from an inner wall of the passage portion and the internal electrode. The temperature detecting device detects a fuel temperature. The holder portion is disposed in the projecting portion of the external electrode and holds the temperature detecting device therein, and the holder portion and the projecting portion define a transfer passage. The sealing portion insulates the external electrode and the holder portion from each other, and prevents fuel flowing in the transfer passage from leaking outside. The calculation unit calculates fuel properties and electrical characteristics of fuel flowing between the external electrode and the internal electrode.

Abstract translation: 燃料特性传感器具有外部电极，内部电极，温度检测装置，保持部，密封部和计算部。 外部电极包括通道部分和突出部分。 内部电极设置在外部电极的通道部分中，距离通道部分的内壁和内部电极预定距离。 温度检测装置检测燃料温度。 保持部设置在外部电极的突出部分中并将温度检测装置保持在其中，保持器部分和突出部分限定了传送通道。 密封部分将外部电极和保持器部分彼此绝缘，并且防止在传送通道中流动的燃料泄漏到外部。 计算单元计算在外部电极和内部电极之间流动的燃料的燃料性质和电气特性。