EGR device having diffusing device and EGR mixer for EGR device
AssigneesDENSO International America, Inc., Denso Corporation
InventorIan Dettloff
Life of this patent
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Abstract
A housing has an housing body. An inner pipe is accommodated in the housing body. The inner pipe defines an inner passage internally. The inner pipe defines an annular passage externally with the housing body. The inner pipe has through holes 68 communicating the inner passage with the annular passage. The housing internally defines an EGR channel communicating with the annular passage. The EGR channel accommodates a diffusing device 60 partitioning the EGR channel.
Claims19
An EGR device comprising:
- a housing defining an inner passage internally and having an EGR inlet;
- and
- a diffusing device extended from the EGR inlet into the inner passage, wherein the diffusing device is a hollow member having, a root end, a tip end, and an intermediate portion between the root end and the tip end defining an interior,
- the intermediate portion has a plurality of through holes communicating the interior with the inner passage,
- the tip end is twisted relative to the root end, and
- the intermediate portion includes lateral walls and a downstream wall located on the downstream side of the lateral walls and relative to mixture gas flow, wherein the lateral walls and downstream wall are projected inward into the inner passage so as to expose exteriors of the lateral walls and downstream wall to the fresh air or mixture gas flow.
An EGR mixer configured to be accommodated in a housing of an EGR device, the housing defining an inner passage internally and having an EGR inlet, the EGR mixer comprising:
- a diffusing device body configured to be extended from the EGR inlet into the inner passage, wherein
- the diffusing device body is a hollow member having a root end, and a tip end, and an intermediate portion between the root end and the tip end defining an interior,
- the intermediate portion a plurality of through holes configured to communicate the interior with the inner passage,
- the tip end is twisted relative to the root end, and
- the intermediate portion includes lateral walls and a downstream wall located on the downstream side of the lateral walls and relative to mixture gas flow, wherein the lateral walls and downstream wall are projected inward into the inner passage so as to expose exteriors of the lateral walls and downstream wall to the fresh air or mixture gas flow.
Dependencies are inferred from the claim text.