Fahrzeug

Details

Veröffentlichungs-Nr.

EP4477850

Aktenzeichen

EP24181760

Anmeldetag

12. Juni 2024

Veröffentlichung

18. Dezember 2024

Rechtsraum

EP

IPC

F01N3/20

Abstract

A vehicle comprising an internal combustion engine, an exhaust system for discharging exhaust gasses from the internal combustion engine, an exhaust after treatment system for treating exhaust gasses from the internal combustion engine , and an exhaust tract connecting the internal combustion engine to the exhaust after treatment system for transferring exhaust gasses from the internal combustion engine to the exhaust after treatment system, the exhaust tract (5) comprising a first exhaust tube (6) connected to the internal combustion engine, a second exhaust tube (7) connected to the exhaust after treatment system, and a flexible tube (8) interconnecting the first and the second exhaust tube (7), the exhaust tract (5) comprising an inner tube (9, 9') having a first inner tube end (10) and a second inner tube end (11), the first inner tube end (10) being connected to an inner side (8A) of the first exhaust tube (6), the second inner tube end (11) being arranged at a position inside the flexible tube (8) and being spaced from an inner side (8A) of the flexible tube (8), the first inner tube end (10) having a larger diameter than the second inner tube end (11), the inner tube (9, 9') comprising a conical wall portion (12) extending from the first inner tube end (10), the conical wall portion (12) being provided with perforations (13), the exhaust after treatment system further comprising a reduction agent injector upstream of the flexible tube (8), whereby the inner tube (9, 9') comprises a cylindrical tubular section (15) extending from a downstream end of the conical wall portion (12) to the second inner tube end (11), the free end of the cylindrical tubular section (15) forming the second inner tube end (11), and in that the flexible tube (8) is slanted in a downwards direction. The upper portion of the free end of the cylindrical tubular section (15) comprises a guiding surface directed downwards which provides heating up the lower part of the inner wall for reducing deposition of the reducing agent thereon.

Anmelder

Firma

DAF Trucks N.V.

Land

🇳🇱 Niederlande

Fachgebiete