Abgasstruktur für Motor, Motor und Fahrzeug

Details

Veröffentlichungs-Nr.

EP4752346

Anmeldetag

12. November 2025

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

Abstract

An exhaust passage (2) is provided with an upstream-side passage (50) and a catalyst device (6), the upstream-side passage extending from exhaust port opening ends (12A), the catalyst device (6) being provided at a position lower than the exhaust port opening ends (12A). The upstream-side passage (50) is provided with a plurality of independent passages (51) arranged side by side in a cylinder arrangement direction, and individually connected to the exhaust port opening ends, the upstream-side passage bulges toward an exhaust side from the respective exhaust port opening ends and extends downward, and the catalyst device is disposed between a exhaust side surface of the engine body and the upstream-side passage in an attitude in which a center axis (X2) of the catalyst device (6) extends along the cylinder arrangement direction, the position overlapping with the respective independent passages when viewed along an up-down direction, and overlapping with the upstream-side passage when viewed along an engine width direction. The structure should cause an early temperature rise of the catalyst.

Anmelder

Firma

MAZDA MOTOR CORPORATION

Land

🇯🇵 Japan