Exhaust gas recirculation mixer device

摘要

A device for mixing exhaust gas in an engine air intake includes a mixing chamber disposed or formed in an air intake conduit, the mixing chamber having an inlet for receiving intake air and an outlet for exhausting the intake air, and having a port between the inlet and the outlet and a mixer tube extending into the port, an end portion of the mixer tube disposed in the mixing chamber shaped as a cylindrical-section having an elongated opening facing the mixing chamber outlet and a wall facing the mixing chamber inlet, a cross-sectional area of the end portion of the mixer tube being at least 40% of a cross sectional area of the mixing chamber at a point where the mixer tube extends into the mixing chamber and an end tip of the mixer tube being spaced from a wall of the mixing chamber opposite the aperture by a distance not more than 20% of a width of the mixing chamber.

主权项

1. A device for mixing exhaust gas in an engine air intake, comprising:
a mixing chamber disposed in an air intake conduit, the mixing chamber having an inlet for receiving intake air and an outlet for exhausting the intake air, and having a port between the inlet and the outlet; and, a mixer tube extending through the port, an end portion of the mixer tube disposed in the mixing chamber shaped as a straight cylinder sectioned to have an elongated elliptical opening facing the mixing chamber outlet and a wall facing the mixing chamber inlet, an end tip of the mixer tube is spaced from a wall of the mixing chamber opposite the port by a distance not more than 20% of a width of the mixing chamber.