Patent ID: 7963109

Claim:
A guide structure for guiding exhaust gas flowing in an exhaust gas purification device installed in an exhaust passage, comprising: a plurality of exhaust gas purification units disposed in series in a container of the exhaust gas purification device, wherein the container includes a central axis and a wall, and a first space is formed between an exterior of a wall of the plurality of exhaust gas purification units and an interior of the wall of the container, and wherein each of the plurality of exhaust gas purification units is positioned coaxially with the container; an exhaust gas sensor installed between the exhaust gas purification units; and a guide plate without openings being positioned at an inlet of at least one of the plurality of exhaust purification units substantially perpendicular to the central axis, wherein a second space is formed between an outer periphery of the plate and an interior of the wall of the at least one of the plurality of the purification units, and wherein the plate prevents the passage of exhaust gas into a center of the at least one of the plurality of the exhaust gas purification units, and diverts the exhaust gas to flow into the second space, and into the first space and to the sensor.