Verfahren für einen Verbrennungsmotor eines Fahrzeugs, System für einen Verbrennungsmotor eines Fahrzeugs, Fahrzeug mit dem System und Offboard-Testanordnung mit dem System

Details

Veröffentlichungs-Nr.

EP4793482

Anmeldetag

14. Februar 2025

Veröffentlichung

19. August 2026

Rechtsraum

EP

Abstract

A method for a combustion engine (200) of a vehicle is presented. The combustion engine comprises: - a first group (225a) of two or more cylinders (220a-d) connected to a first exhaust gas manifold (240a) comprising a first pressure sensor (241a); and - a second group (225b) of two or more cylinders connected to a second exhaust gas manifold (240b) comprising a second pressure sensor (241b). The following steps being performed by a control unit (500) when the combustion engine is out of normal operation: - controlling the combustion engine (200) to run at a plurality of different engine speeds ω<1> , ω<2>, ... , ω<n>; - inducing, for each of the plurality of different engine speeds ω<1>, ω<2>, ..., ω<n>, at least one fuel cutoff for at least one (220a) of the four or more cylinders during a time interval T; - measuring at least one first P<resp_a> and second P<resp_b> misfire pressure responses with the first and second pressure sensors; - determining at least one misfire template T<misfire_a>, T<misfire_b> based on the at least one first and second misfire pressure responses.

Anmelder

Firma

Traton AB

Land

🇸🇪 Schweden