Intake manifold

Patent metadata

Field	Value
Publication number	US-10968875-B2
Application number	US-201916523099-A
Country	US
Kind code	B2
Filing date	Jul 26, 2019
Priority date	Aug 29, 2018
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

An intake manifold includes a passage wall portion having a first member passage wall portion provided at a first member, a second member passage wall portion provided at a second member, and an inner joint portion including a division point at which an inner joint portion is divided from an outer peripheral joint portion, the inner joint portion at which the first member passage wall portion and the second member passage wall portion are joined with each other. At least a part of the inner joint portion except for the division point is arranged at a height position closer to a middle part of a gas passage than the division point in a first direction in which the first member and the second member are opposed with each other.

First claim

The invention claimed is:

1. An intake manifold, comprising:
a surge tank formed by a first member and a second member which are joined with each other, the surge tank to which an external gas is introduced;
an outer peripheral joint portion at which the first member and the second member are joined with each other; and
a passage wall portion extending inwardly from the outer peripheral joint portion so as to form a gas passage introducing the external gas to the surge tank, the gas passage being formed between inner surfaces of the first member and the second member and the passage wall portion; wherein
the passage wall portion includes
a first member passage wall portion provided at the first member;
a second member passage wall portion provided at the second member; and
an inner joint portion including a division point at which the inner joint portion is divided from the outer peripheral joint portion, the inner joint portion at which the first member passage wall portion and the second member passage wall portion are joined with each other;
the inner joint portion includes a first inner joint portion including the division point and a second inner joint portion;
the second inner joint portion is arranged at a height position closer to a middle part of the gas passage than the division point in a first direction in which the first member and the second member are opposed with each other;
the first inner joint portion and the second inner joint portion are arranged so as to extend in a second direction which is orthogonal to the first direction;
the second inner joint portion is arranged so as to extend in the second direction at the height position closer to the middle part of the gas passage than the first inner joint portion in the first direction.

2. The intake manifold according to claim 1 , wherein
the second inner joint portion is arranged at a downstream of the gas passage relative to the first inner joint portion; and
the passage wall portion includes a clearance between the first inner joint portion and the second inner joint portion.

3. The intake manifold according to claim 1 , wherein the first member and the second member are joined with each other by vibration welding.

4. The intake manifold according to claim 1 , wherein the first member and the second member are joined with each other by ultrasonic welding.

5. The intake manifold according to claim 2 , further comprising a lid portion arranged at the clearance, the lid portion decreasing a dimension of the clearance.

6. The intake manifold according to claim 5 , wherein the lid portion includes a first lid portion provided at the first member passage wall portion, and a second lid portion provided at the second member passage wall portion and arranged so as to be opposed to the first lid portion.

7. The intake manifold according to claim 1 , further comprising a blown-back inhibition portion provided from the surge tank to the passage wall portion, the blown-back inhibition portion being formed in a rib shape extending in a direction which is orthogonal to the passage wall portion, the blown-back inhibition portion inhibiting the external gas from blowing back to the upstream of the surge tank by being exposed to the external gas introduced to an inner space of the surge tank via the gas passage.

8. The intake manifold according to claim 2 , further comprising a blown-back inhibition portion provided from the surge tank to the passage wall portion, the blown-back inhibition portion being formed in a rib shape extending in a direction which is orthogonal to the passage wall portion, the blown-back inhibition portion inhibiting the external gas from blowing back to the upstream of the surge tank by being exposed to the external gas introduced to an inner space of the surge tank via the gas passage.

9. The intake manifold according to claim 1 , further comprising a gas passage outlet provided between the inner surfaces of the first member and the second member and an end portion of the passage wall portion which is arranged opposite to the division point, the gas passage outlet being communicated with an inner space of the surge tank and introducing the external gas to the inner space of the surge tank via the gas passage.

Assignees

• Aisin Seiki

Inventors

• Kuriki Takuma
• Senda Tomohisa
• Teramoto Hideaki
• Ikegami Ryo
• Ninomiya Kyohei

Classifications

• F02B27/0263

  the plenum chamber and at least one of the intake ducts having a common wall, and the intake ducts wrap partially around the plenum chamber, i.e. snail-type (F02B27/0257 takes precedence) · CPC title

• F02M35/112

  for engines with cylinders all in one line · CPC title

• F02M35/10222

  Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission · CPC title

• F02M35/10026 Primary

  Plenum chambers · CPC title

• F02M35/108 Primary

  with primary and secondary intake passages · CPC title