Überwachung eines Gaseinlassventils eines Mehrstoffmotors während des Betriebs mit Flüssigbrennstoff

Details

Veröffentlichungs-Nr.

EP2915984

Aktenzeichen

EP14158257

Anmeldetag

7. März 2014

Veröffentlichung

1. März 2017

Erteilung

1. März 2017

Rechtsraum

EP

IPC

F02D19/10F02D41/22F02D19/06F02D35/02F02D41/00// F02B3/06

Abstract

For a dual fuel internal combustion engine (100) comprising a plurality of cylinders (9) and at least one gaseous fuel admission valve for each cylinder (9) of the plurality of cylinders (9), a method of evaluating operability of gaseous fuel admission valves (58) comprises operating (step 312) the dual fuel internal combustion engine (100) on liquid fuel; supplying (step 354) a purge gas to the gaseous fuel admission valves (58) at a pressure above an intake manifold air pressure thereby setting a differential gas pressure across the gaseous fuel admission valves (58); measuring (step 360), for each cylinder of the plurality of cylinders, a combustion process parameter such as cylinder pressure; and evaluating (step 362) operability of the gaseous fuel admission valves (58) based on the measured combustion process parameters. Leaking purge gas may result in cylinder-specifically deviating combustion process parameters, allowing to identify malfunctioning gaseous fuel admission valves.

Anmelder

Firma

Caterpillar Motoren GmbH & Co. KG

Land

🇩🇪 Deutschland

Fachgebiete