Toyota Jidosha Kogyo Kabushiki Kaisha

Yasuyuki Sakai

Hidetaka Nohira

Hironori Bessho

Hideaki Matsui

A catalyst container for use in an exhaust manifold, which container includes perforated inner and outer cylinders and is positioned within the exhaust manifold, in the position of its exit, with catalysts filled in a cylindrical space defined between the inner cylinder and outer cylinder. In this catalyst container, annular openings in the cylindrical space at its top and bottom ends are covered with annular upper and lower lids, respectively, while a circular, inner cylinder lid is placed over the top opening of the inner cylinder to cover it. In addition, an outer cylinder lid is placed on the top circumferential edge of the outer cylinder in a manner to cover the top opening of the outer cylinder as well as the circular, inner cylinder lid. The catalysts are filled in a first space defined by the inner cylinder lid and the outer cylinder lid as well as in a second space defined between the outer cylinder and the inner cylinder. The first space communicates with the second space through at least one hole provided in the upper annular lid.

Catalyst container for use in exhaust manifold

An internal combustion engine exhaust manifold with cylindrical built-in catalyst container which comprises cylindrical inner and outer cylinders and annular lids fitting at opposite ends thereof and is filled with a catalyst suitable for cleaning the engine exhaust. An exhaust gas cleaning device using the exhaust manifold comprises an oxygen concentration sensor located in the exhaust gas flow and an electronic fuel injector for performing feedback control in accordance with a signal from the oxygen concentration sensor.

Internal combustion engine exhaust manifold with cylindrical built-in

A generally cylindrically shaped annular catalytic converter is provided within the manifold of an exhaust gas system with branch pipes extending from the manifold to introduce exhaust gases thereinto. Each of the branch pipes defines a flow direction extending tangentially of the catalytic converter with the central axis of each branch pipe being directed at an oblique angle relative to the central axis of the catalytic converter and spaced from each other axially relative to the converter central axis.

Growing community of inventors

Susono, Japan

Yasuyuki Sakai