Hitachi Automotive Systems, Ltd.

Hitachi, Ltd.

Other

Sony Corporation

Sumitomo Metal Mining Company, Ltd.

Hitachi-johnson Controls Air Conditioning, Inc.

Hitachi Industrial Equipment Services Co., Ltd.

Hitachi Astemo Ltd.

Hitachi Industrial Equipment Systems Co., Ltd.

Eiji Ishii

Kazuki Yoshimura

Motoyuki Abe

Yoshihito Yasukawa

Takahiro Saito

Tohru Ishikawa

Nobuaki Kobayashi

Noriyuki Maekawa

Kiyotaka Ogura

Hideharu Ehara

Yoshio Okamoto

Takao Miyake

Taisuke Sugii

Tomoyuki Hosaka

Yoshihiro Sukegawa

Masanori Ishikawa

Masayuki Saruwatari

Akihiro Yamazaki

Mitsuhiro Matsuzawa

Yoshiyuki Tanaka

Hiroshi Yamada

Takashi Kouno

Kazuhiro Oryoji

Akio Ohkoshi

Masato Ikegawa

Sachio Sekiya

Masahiro Soma

Hayato Shimizu

Nobuhiro Harada

Akira Nakayama

Mari Uchida

Atsushi Takaoku

Tsuneaki Takagishi

Atsushi Nakai

Shigeyuki Sasaki

Koma Sato

Shoji Kato

Masanori Mifuji

Shoichiro Kisanuki

The purpose of the present invention is to prevent the flow of air flowing from the outside of a cover part into the cover part via an ink droplet passing hole as air accompanying printing droplets outflows. An inkjet recording device is provided with: a recording mechanism (printing mechanism) having an ink roomthat ejects an ink column, charging electrodesA andB that charge ink dropletsgenerated from the ink column, and deflection electrodesA andB that deflect charged ink dropletsA; and a cover partthat has an ink droplet passing holethrough which the ink dropletsA deflected by the deflection electrodesA andB pass and covers the recording mechanism. The inkjet recording device causes the ink dropletsA to land onto a recording objectthat moves relative to a recording headto perform recording. A vent holeis provided in a lateral surface of the cover part

Inkjet printer

An object of the present invention is to provide a control device of an injector capable of suppressing the influence of pressure reduction boiling even if pressure in a combustion chamber is low. In a case where the temperature of fuel injected from a fuel injection valve is within a set high temperature region and the pressure of the combustion chamber is within a set low pressure region, the control device of an in-cylinder direct injection-type injector according to the present invention controls to increase a lift amount of the injector as compared to the case of a low temperature region or a high pressure region.

Vehicle control device

A fuel injection valve is a fuel injection valve for injecting fuel to a combustion chamber of an internal combustion engine, which includes a valve body that is lifted by any one of a first lift amount of a maximum valve body lift amount and a second lift amount smaller than the first lift amount. In a case where the maximum valve body lift amount of the valve body is the first lift amount, a flow path area of a seat portion is larger than a sum of flow path areas of all injection holes, and in a case where the maximum valve body lift amount of the valve body is the second lift amount, the flow path area of the seat portion is smaller than the sum of flow path areas of all the injection holes.

Fuel injection valve

Provided is a fuel injection device and a control unit therefor which enable reliable ignition even in a case where fuel pressure is low immediately after starting an engine. In the control unit for controlling an injector injecting fuel into an internal combustion engine, a plurality of injectors is provided in the internal combustion engine, a static flow rate of a first injector is configured to be smaller than a static flow rate of a second injector. In a case where a fuel pressure of fuel supplied by a pressurizing unit is lower than a set value set lower than a fuel pressure in warming up, an injection ratio of the first injector is controlled to increase according to a difference between a fuel pressure of fuel from the pressurizing unit and a fuel pressure in warming up.

Control device

A fuel injection valve includes a valve seat, a valve element, and a plurality of swirl fuel injection passages. The plurality of swirl fuel injection passages are divided into a first swirl fuel injection passage group that forms a first spray and a second swirl fuel injection passage group that forms a second spray that is oriented in a direction different from a first direction.

Provided is a fuel injection valve which can be easily processed and can realize sufficient atomization while suppressing spreading of spray. In the fuel injection valve according to the present invention, when a nozzle plateand a first direction-in which fuel is sprayed are projected onto a virtual plane perpendicular to a central axis line of the fuel injection valve along an opening and closing valve direction of a valve body and a first orthogonal coordinate system having an Xpassing through a center Oof the nozzle plateand along the first direction-and a Yaxis passing through the center Oof the nozzle plateand perpendicular to the Xaxis is virtualized on the virtual plane, an introduction passage-is inclined so that a straight line segment-connecting between a central point-of an upstream side end portion and a center Oa-of an inlet opening surface of a fuel injection hole-is positioned on the Yaxis side with respect to a straight line-passing through the central point-and the center Oof the nozzle plate

It is prevented that residual fuel left in the vicinity of an injection nozzle outlet is carbonized to cause adherence of the carbonized fuel as deposit and changing of a spray pattern or an injection flow rate. A fuel injection valve includes a seat portion on which a valve body is seated and a seat portion in which an injection hole for injecting fuel downstream from the seat portion is formed, in which a concave surface denting in a direction opposite to a fuel injecting direction is formed on an outer peripheral side away from the injection hole at an end face located downstream of the seat member, and the concave surface is formed such that a material surface in an outer peripheral region has a larger wettability for the fuel than in an inner peripheral region.

A spark-ignition direct fuel injection valve includes, at least, a seat member provided with a fuel injection hole and a valve seat and a valve body which controls fuel injection from the injection hole by contacting and separating from the valve seat. In the spark-ignition direct fuel injection valve: the injection hole has an injection hole inlet which is open inwardly of the seat member and an injection hole outlet which is open outwardly of the seat member; an opening edge of the injection hole inlet has a first round-chamfered portion formed on an upstream side with respect to a fuel flow toward the injection hole inlet; and an extending length (L) of the injection hole does not exceed three times a hole diameter (D) of the injection hole.

Spark-ignition direct fuel injection valve

Provided is a fuel injector that is capable of reducing penetration. The fuel injector of the present invention includes a valve body having a valve body side seat surface, a valve seat side seat surface that abuts on the valve body side seat surface, and an injection hole that is provided downstream of a position at which the valve body side seat surface abuts on the valve seat side seat surface. The valve body has a projection that is formed from the valve body side seat surface toward the injection hole, and the projection is formed to be smaller in a direction of fuel flow between seats than a radius of an upstream opening surface of the injection hole.

Fuel injection device

The purpose of the present invention is to provide a fuel injection valve that can achieve sufficient atomization even if the spray angle is narrow. The present invention is a fuel injection valve, in which fuel flowing in from a fuel passage sectionis made to flow so as to diffuse from the center of a fuel diffusion chamberB toward the outer circumference and to flow into a nozzle hole, wherein: the nozzle holecomprises a first nozzle hole, and a second nozzle holeand a third nozzle holethat neighbor the first nozzle holeand are separated therefrom in the circumferential direction of the fuel diffusion chamberB; and, if the distance Lbetween the center of the entry-side opening of the first nozzle holeand the center of the entry-side opening of the second nozzle holeis greater than the adistance Lbetween the center of the entry-side opening of the first nozzle holeand the center of the entry-side opening of the third nozzle hole, the exit-side opening of the first nozzle holeis disposed on the inside of an arrangement circleand on the second nozzle holeside of a line segment

A refrigerant distributor includes an inlet pipe, a header pipe to which the inlet pipe has been connected and a plurality of refrigerant pipes connected to one end side of the header pipe which is opposite to the side that the inlet pipe is connected, below the inlet pipe in a vertical direction, and is configured such that a refrigerant which has flown into the header pipe through the inlet pipe is distributed into the plurality of refrigerant pipes. The header pipe is arranged such that a vertical upper side of the header pipe is inclined toward the one end side that the refrigerant pipes are connected. Thereby, it is possible to stably distribute the refrigerant to each refrigerant pipe while suppressing an increase in cost under flow rate conditions ranging from a rated operation condition to a low rotating speed operation condition.

Refrigerant distributor and refrigeration cycle device equipped with the refrigerant distributor

In a fuel injection valve, it is possible to obtain spray in which the penetrating force of injected fuel is suppressed. The fuel injection valve includes a valve seat that forms a gap with a valve body, the gap allowing fuel to pass therethrough, and multiple injection holes that are located further downstream from the gap. The fuel to which pressure is applied flows out from the injection holes. When the flow velocity of the fuel in the gap formed between the valve body and the valve seat is indicated by meters per second, the flow velocity is set to be greater than a value obtained by multiplying the square root of the pressure applied to the fuel by 28. In this manner, the flow velocity in the gap increases, and flow velocity distribution inside the injection hole is uniformized, thereby suppressing an increase in penetration.

In a fuel injection valve used in an internal combustion engine, fuel spray travel distance is shortened. There is provided a fuel injection valve including a seat member, in which the seat member includes a conical seat surface that seats fuel by coming in contact with a valve body, and inlet opening portions of a plurality of fuel injection holes on the conical seat surface, and is configured such that an axis of the injection hole connecting the centers of an inlet and an outlet of the fuel injection hole is along a plurality of different conical surfaces, and in which, in an outlet section that is configured of a plane parallel to an inlet section of the inlet opening portion of the fuel injection hole and is positioned at the outlet of the fuel injection hole, the seat member includes the injection hole in which a major axis direction of an ellipse of the outlet section has an inclination angle of greater than 0 degrees with respect to a straight line in a fuel injection direction, which is obtained by projecting the axis of the injection hole on the outlet section, and an inclination angle of a degree before being perpendicular to the straight line in the fuel injection direction.

Growing community of inventors

Tokyo, Japan

Eiji Ishii