Exhaust gas recirculation device
First Claim
1. An exhaust gas recirculation device comprising:
- a housing including an inner wall defining an intake passage through which an intake air passes, and an outlet opening of an EGR gas provided in the inner wall;
a throttle valve positioned in the intake passage and generating a negative pressure at the outlet opening; and
an intake air guide device provided in the housing and guiding the intake air, which has passed between the throttle valve and the inner wall of the housing, toward an axial center area of the intake passage, whereinat least a part of the intake air guide device is positioned on an upstream side of the intake air with respect to the outlet opening,the intake air guide device is provided in the intake passage,the inner wall of the housing defines an EGR passage that extends from the outlet opening, the EGR gas flowing through the EGR passage,the housing includes a gas guide device that guides the EGR gas, which flows into the intake passage through the outlet opening, in a downstream direction of the intake air,the gas guide device is located in the EGR passage, andthe gas guide device protrudes from an inner wall of the outlet opening of the EGR gas toward an axial center area of the EGR passage.
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Accused Products
Abstract
An exhaust gas recirculation device includes a housing including an inner wall defining an intake passage through which an intake air passes. The housing includes an outlet opening of an EGR gas provided in the inner wall, and a throttle valve positioned in the intake passage and generating a negative pressure at the outlet opening. The housing includes an intake air guide device provided in the housing and guiding the intake air, which has passed between the throttle valve and the inner wall of the housing, toward an axial center area of the intake passage. At least a part of the intake air guide device is positioned on an upstream side of the intake air with respect to the outlet opening.
12 Citations
13 Claims
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1. An exhaust gas recirculation device comprising:
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a housing including an inner wall defining an intake passage through which an intake air passes, and an outlet opening of an EGR gas provided in the inner wall; a throttle valve positioned in the intake passage and generating a negative pressure at the outlet opening; and an intake air guide device provided in the housing and guiding the intake air, which has passed between the throttle valve and the inner wall of the housing, toward an axial center area of the intake passage, wherein at least a part of the intake air guide device is positioned on an upstream side of the intake air with respect to the outlet opening, the intake air guide device is provided in the intake passage, the inner wall of the housing defines an EGR passage that extends from the outlet opening, the EGR gas flowing through the EGR passage, the housing includes a gas guide device that guides the EGR gas, which flows into the intake passage through the outlet opening, in a downstream direction of the intake air, the gas guide device is located in the EGR passage, and the gas guide device protrudes from an inner wall of the outlet opening of the EGR gas toward an axial center area of the EGR passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An exhaust gas recirculation device comprising:
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a housing including an inner wall defining an intake passage through which an intake air passes, and an outlet opening of an EGR gas provided in the inner wall; a throttle valve positioned in the intake passage and generating a negative pressure at the outlet opening; and an intake air guide device provided in the housing and guiding the intake air, which has passed between the throttle valve and the inner wall of the housing, toward an axial center area of the intake passage, wherein at least a part of the intake air guide device is positioned on an upstream side of the intake air with respect to the outlet opening, the intake air guide device is provided in the intake passage, the intake air guide device has an annular shape extending along the inner wall of the intake passage, the intake air guide device includes a first portion and a second portion, the first portion being located upstream of the second portion with respect to the EGR gas, the second portion being located on an opposite side of the first portion in a radial direction of the intake passage, and the second portion is located downstream of the first portion with respect to the intake air. - View Dependent Claims (13)
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Specification