Abstract: A fuel injection valve includes a body that includes an injection hole through which fuel is injected, and a valve element that opens or closes the injection hole. The body includes a metallic base material configured to form the injection hole, a corrosion-resistant layer covering a surface of at least a part of the base material that forms the injection hole and being made of a less corrosive material than the base material, and a sacrificial corrosion layer located between the base material and the corrosion-resistant layer and made of a more corrosive material than the corrosion-resistant layer.

Abstract: A throttle portion is defined between an upper end of a sac chamber and a conical portion of a needle to have a throttle opening area S1. Half of an area surrounded by the throttle portion, the needle, an inner wall of the sac chamber, and a lower end extended line in a cross section of the sac chamber taken along a sac center line is an injection hole upstream area S2. A lift amount, when the throttle opening area S1 is equal to an area which is calculated by multiplying an injection hole area S3 by the number of the injection holes, is a predetermined lift amount L. A viscosity coefficient of fuel is ?. An index value Sa, which is calculated in accordance with an equation as below, is set to 0.5 or greater.

Abstract: A fuel injection valve includes a body that includes an injection hole through which fuel is injected, and a valve element that opens or closes the injection hole. The body includes a metallic base material configured to form the injection hole, a corrosion-resistant layer covering a surface of at least a part of the base material that forms the injection hole and being made of a less corrosive material than the base material, and a sacrificial corrosion layer located between the base material and the corrosion-resistant layer and made of a more corrosive material than the corrosion-resistant layer.

Abstract: A fuel injection valve includes a body that includes an injection hole through which fuel is injected, and a valve element that opens or closes the injection hole. The body includes a metallic base material configured to form the injection hole, a corrosion-resistant layer covering a surface of at least a part of the base material that forms the injection hole and being made of a less corrosive material than the base material, and a diffusion deterring layer located between the base material and the corrosion-resistant layer and made of a material that less easily allows a metal component of the base material to diffuse than the material of the corrosion-resistant layer.

Abstract: A throttle portion is defined between an upper end of a sac chamber and a conical portion of a needle to have a throttle opening area S1. Half of an area surrounded by the throttle portion, the needle, an inner wall of the sac chamber, and a lower end extended line in a cross section of the sac chamber taken along a sac center line is an injection hole upstream area S2. A lift amount, when the throttle opening area S1 is equal to an area which is calculated by multiplying an injection hole area S3 by the number of the injection holes, is a predetermined lift amount L. A viscosity coefficient of fuel is ?. An index value Sa, which is calculated in accordance with an equation as below, is set to 0.5 or greater.

Abstract: In an injection hole of a nozzle, a maximum value of a longitudinal length of an inlet, which is measured in a direction of an inlet longitudinal axis of the inlet, is larger than a maximum value of a longitudinal length of an outlet, which is measured in a direction of an outlet longitudinal axis of the outlet. A rear end edge of an opening edge of the inlet is shaped into an arc. When the maximum value of the inlet is made larger than the maximum value of the outlet, an upstream end of the inlet can be placed at a further upstream side, so that a turn angle of a fuel flow can be reduced to increase the flow coefficient. Furthermore, when the rear end edge is shaped into the arc, the maximum value of the inlet can be increased.

Abstract: In a nozzle, in a cross section including an axis of a nozzle body, a side surface and a seat surface are both smoothly connected to an arc of a circle inscribing both the side surface and the seat surface. A part of a needle which is adjacent to a tip end side of a seat portion is a cone having a diameter reduced toward a tip end side of the cone in the axial direction. Thus, no corner is on the seat surface or the side surface, and the two surfaces form one curved surface. Since a cavitation generated in a sack chamber can be reduced, even when an injection quantity is significantly small such that an injection port does not throttle an injection flow, a flow coefficient of the injection flow is improved and a penetration of a spray of the fuel can be maintained.

Abstract: In an injection hole of a nozzle, a maximum value of a longitudinal length of an inlet, which is measured in a direction of an inlet longitudinal axis of the inlet, is larger than a maximum value of a longitudinal length of an outlet, which is measured in a direction of an outlet longitudinal axis of the outlet. A rear end edge of an opening edge of the inlet is shaped into an arc. When the maximum value of the inlet is made larger than the maximum value of the outlet, an upstream end of the inlet can be placed at a further upstream side, so that a turn angle of a fuel flow can be reduced to increase the flow coefficient. Furthermore, when the rear end edge is shaped into the arc, the maximum value of the inlet can be increased.

Abstract: A fuel injector has a cylindrical nozzle body, a nozzle needle, a pressure chamber and an injection passage. The injection passage includes a first hole and a second hole. A minimum vertical distance between an outer periphery of a first nozzle hole outlet and a contact point relative to an axial center line of the first hole is defined as a vertical distance R. A minimum axial distance between the first nozzle hole outlet and the contact point relative to an axial center line of the first hole is defined as an axial distance L. An angle between the axial center line of the first nozzle hole and the outer periphery line of the fuel spray is defined as an injection angle ?. The vertical distance R, the axial distance L and the injection angle ? satisfy a formula: R/(L×tan ?)>6.0.

Abstract: A fuel injection nozzle of the present disclosure is a multi-hole type fuel injection nozzle where a plurality of injection holes are arranged along a circumferential direction about an axis of a nozzle body, and inject fuel radially outward from the axis of the nozzle body. Among two of the plurality of injection holes that are mutually adjacent along the circumferential direction, one injection hole has a larger spray angle and a shorter spray distance as compared to an other injection hole, and the other injection hole has a smaller spray angle and a longer spray distance as compared to the one injection hole. By arranging these injection holes alternately along the circumferential direction, a required inter-spray distance may be maintained and, at the same time, a space utilization ratio may be improved.

Abstract: An injection port includes a straightening area which straightens a flow of a fuel, and an increasing area which is a slit connected to a downstream end of the straightening area and increasing a cross-sectional area of the flow toward a downstream end of the increasing area. The fuel is injected from the downstream end of the increasing area. When a cross-sectional area of the downstream end of the straightening area is expressed as S1, a cross-sectional area of the downstream end of the increasing area is expressed as S2, and a shape property value is expressed as X that is equal to S2/S1, the shape property value X is set to be greater than 1.0 and be less than or equal to 4.0.

Abstract: A fuel injector has a cylindrical nozzle body, a nozzle needle, a pressure chamber and an injection passage. The injection passage includes a first hole and a second hole. A minimum vertical distance between an outer periphery of a first nozzle hole outlet and a contact point relative to an axial center line of the first hole is defined as a vertical distance R. A minimum axial distance between the first nozzle hole outlet and the contact point relative to an axial center line of the first hole is defined as an axial distance L. An angle between the axial center line of the first nozzle hole and the outer periphery line of the fuel spray is defined as an injection angle ?. The vertical distance R, the axial distance L and the injection angle ?satisfy a formula: R/(L×tan?)>6.0.

Abstract: In a nozzle, in a cross section including an axis of a nozzle body, a side surface and a seat surface are both smoothly connected to an arc of a circle inscribing both the side surface and the seat surface. A part of a needle which is adjacent to a tip end side of a seat portion is a cone having a diameter reduced toward a tip end side of the cone in the axial direction. Thus, no corner is on the seat surface or the side surface, and the two surfaces form one curved surface. Since a cavitation generated in a sack chamber can be reduced, even when an injection quantity is significantly small such that an injection port does not throttle an injection flow, a flow coefficient of the injection flow is improved and a penetration of a spray of the fuel can be maintained.

Abstract: The electronic component device includes an electronic component such as a pressure sensor for detecting pressure of fuel injected into an internal combustion engine, an insulating member made of an insulative resin and sealing the electronic component, and a shield member made of a conductive resin and surrounding the insulating member.

Abstract: A sensor device where a jig is engaged to an engaging part formed in the housing, and the housing is rotated by the jig and screwed into the member to be mounted. A position in the rotating direction of the housing is configured to have a substantially constant position at the time the screw-fixing of the housing and the member to be mounted is completed. A shape of the engaging part when seen along a direction of a rotational axis X of the housing is formed into a non-regular polygon, and the engaging part and a mold IC are shifted and disposed to a side that has a margin in a space in the housing or around the mold IC so that the space around the sensor device is used effectively.

Abstract: A sensor apparatus that outputs an electrical signal responding to a physical quantity is provided. The sensor apparatus includes: a housing being screwed to a body and having an insertion hole; an electrical circuit section having an electrical component used for processing the electrical signal, being disposed at an one end side of the housing and integrated with the housing; and a plurality of pins inserted through the electrical circuit section, a first end of the pin being inserted into the insertion hole to be fixed therewith, a second end of the pin being protruded from the electrical circuit section to be capable of engaging with a jig. The jig is used to screw the housing to the body after the housing and the electrical circuit are integrated with each other.

Abstract: An electrical wiring structure of connecting between a first component and a second component with at least four lead wires includes the first component provided with first insertion portions in which the lead wires are inserted, and the first insertion portions 15 are arranged in two lines and j columns, and the second component provided with second insertion portions in which the lead wires are inserted, and the second insertion portions are in two lines and j columns. Ends of a pair of lead wires are inserted into the first insertion portions and other ends of the pair of lead wires are inserted into the second insertion portions after crossing at an intermediate part.

Abstract: A component for an electronic apparatus has an insulating member that has a plurality of through holes in parallel in which the lead wires are inserted and a shield cover in which an insulating member insertion hole where the insulating member is inserted is formed that cut offs an electrical noise. The insulating member is formed in an integrated shape where parts of adjoining cylindrical parts in which the through holes are formed overlapping mutually when seen along an axial direction of the through hole. The insulating member insertion hole becomes a single hole formed identical to an outer shape of the insulating member when seen along the axial direction of the through hole.

Abstract: An electric connection structure includes a plurality of strip-like first terminals and a plurality of second terminals welded to ends in a longitudinal direction of the first terminals. The first terminals are arranged in parallel with intervals therebetween. The first terminals are arranged so that at least a part thereof faces each other. The first terminals are arranged to be offset in the longitudinal direction alternately so that the ends of the first terminals in the longitudinal direction project. The second terminals are welded to the ends in the projected sides in the longitudinal direction in the first terminal.

Abstract: A sensor apparatus that outputs an electrical signal responding to a physical quantity is provided. The sensor apparatus includes: a housing being screwed to a body and having an insertion hole; an electrical circuit section having an electrical component used for processing the electrical signal, being disposed at an one end side of the housing and integrated with the housing; and a plurality of pins inserted through the electrical circuit section, a first end of the pin being inserted into the insertion hole to be fixed therewith, a second end of the pin being protruded from the electrical circuit section to be capable of engaging with a jig. The jig is used to screw the housing to the body after the housing and the electrical circuit are integrated with each other.