Intake control device

Patent metadata

Field	Value
Publication number	US-11725596-B2
Application number	US-202017766555-A
Country	US
Kind code	B2
Filing date	Oct 16, 2020
Priority date	Oct 18, 2019
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

An intake control device 1 includes: a body 3 including an intake passage 2; and a valve body 4 located in the intake passage 2. The intake passage 2 includes a direction continuation segment 13 in which a first major axis direction d1 and a second major axis direction d2 are approximately parallel to each other continuously from a downstream opening 6 of the body 3. The body 3 includes a seal plane 14 formed along a plane that intersects with part of the direction continuation segment 13. The valve body 4 includes a valve plane 15 formed by a plane that abuts the seal plane 14, and is configured to slide relative to the seal plane 14 via the valve plane 15 to adjust an opening degree of the intake passage 2.

First claim

The invention claimed is:

1. An intake control device comprising:
a body including an intake passage that is at least part of an intake pipe leading to a combustion chamber of an internal combustion engine; and
a valve body located in the intake passage,
wherein the body includes a seal plane formed by a plane that extends at an angle with an extending direction of the intake passage,
wherein the valve body includes a valve plane formed by a plane that abuts the seal plane, and is configured to slide relative to the seal plane via the valve plane to adjust an opening degree of the intake passage and to increase the opening degree of the intake passage in a case of moving from one side to an other side of the intake passage,
wherein a first transmission mechanism configured to drive the valve body is located on the other side of the intake passage,
wherein the first transmission mechanism is located on an upstream side of the intake passage from a first reference plane including the seal plane, and includes a drive transmission shaft located on the other side of the intake passage and configured to rotate,
wherein the drive transmission shaft is configured to be rotated by an electric motor that includes a drive shall located approximately parallel to a rotation axis of the drive transmission shaft,
wherein a second transmission mechanism configured to transmit a drive force from the electric motor to the drive transmission shaft is provided between the electric motor and the drive transmission shaft,
wherein the body includes an upstream opening and a downstream opening of the intake passage,
wherein the electric motor is located on the one side opposite to the drive transmission shaft with the intake passage therebetween as seen from a direction orthogonal to a second reference plane that is parallel to a sliding direction of the valve body and includes a sliding center line intersecting with a passage center line and the passage center line, the passage center line being a straight line connecting an upstream center point that is an area center of the upstream opening and a downstream center point that is an area center of the downstream opening,
wherein a first reference line intersecting with the rotation axis of the drive transmission shaft and the rotation axis of the drive shaft, and the first reference plane intersect with the passage center line at respective acute corresponding angles and a corresponding angle of the first reference line is greater than a corresponding angle of the first reference plane as seen from a direction orthogonal to the second reference plane, and
wherein at least part of the electric motor is located closer to the intake passage than a third reference plane, the third reference plane being a plane parallel to the passage center line, orthogonal to the rotation axis of the drive shaft, and in contact with an edge of the intake passage on a side on which the second transmission mechanism is located.

2. The intake control device according to claim 1 , wherein an injection port of a fuel injection valve configured to inject fuel into the intake pipe is located on the one side of the intake passage and downstream from the valve body in the intake passage, and
wherein a main body of the fuel injection valve is located on the one side of the intake passage and downstream from the electric motor.

3. The intake control device according to claim 2 , comprising
a first coupler to which a first power supply terminal configured to supply power to the fuel injection valve is connected and a second couplet to which a second power supply terminal configured to supply power to the electric motor is connected, on the one side of the intake passage,
wherein a first opening of the first coupler for receiving the first power supply terminal and a second opening of the second coupler for receiving the second power supply terminal are both open to the one side.

4. The intake control device according to claim 1 , comprising
an opening degree sensor configured to detect a rotation angle of the drive transmission shaft,
wherein the opening degree sensor is located at an end of the drive transmission shaft on a side on which the second transmission mechanism is located as seen from a direction parallel to the passage center line.

5. The intake control device according to claim 1 , wherein the seal plane is inclined toward the upstream side of the intake passage with respect to the extending direction of the intake passage from the one side to the other side of the intake passage.

Assignees

• Hitachi Astemo Ltd

Inventors

• Kikuchi Hiroshi

Classifications

• F02D9/14 Primary

  the members being slidable transversely of conduit · CPC title

• F02M35/10216

  Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators · CPC title

• F02M35/10255

  Arrangements of valves; Multi-way valves (F02M35/10032 takes precedence; valves in the plenum chamber F02M35/10065; check valves F02M35/10275) · CPC title

• F02M35/112

  for engines with cylinders all in one line · CPC title

• F02M69/042

  Positioning of injectors with respect to engine, e.g. in the air intake conduit (mounting of injectors F02M61/14) · CPC title