公开(公告)号：US10711671B2

公开(公告)日：2020-07-14

申请号：US16133913

申请日：2018-09-18

Applicant: FCA Italy S.p.A.

Inventor： Alessandro Mauro ,  Vincenzo Colandrea ,  Danilo Garombo

IPC: F01N3/02 ,  F01N3/023 ,  F02D41/02 ,  F01N9/00 ,  F02D41/40

Abstract: A diesel engine system includes a diesel engine, an exhaust line, a particulate filter interposed in the exhaust line and an electronic control unit for controlling fuel injectors associated with cylinders of the engine. When an accumulated particulate mass in said filter reaches a predetermined threshold, a filter regeneration mode is activated, including activating post-injections of fuel by controlling said injectors, to determine a start of an automatic filter regeneration step, which is caused by an increase in temperature of exhaust gases fed to the filter. The temperature increase is sufficient to burn particulate in the filter. The post-injections of fuel are deactivated whenever a critical condition occurs for at least a first period of time, the critical condition being one in which a temperature value upstream of the filter exceeds a first threshold value. In this case, the regeneration mode is resumed following disappearance of the critical condition.