公开(公告)号：US20230053630A1

公开(公告)日：2023-02-23

申请号：US17892497

申请日：2022-08-22

Applicant: Perkins Engines Company Limited

Inventor： Daniel FITCH ,  Mark Philip ALDRED ,  lvan Rogers

IPC: F01N3/20

Abstract: The present invention pertains an onboard device for checking the quality of DEF in a work machine, comprising a flow channel configured to fluidly connect a DEF inlet with a DEF tank. The flow channel comprises a DQS configured to be brought into contact with DEF passing through the flow channel. The present invention also pertains to a method of checking the quality of DEF comprising the steps of tilling DEF into a flow channel configured to fluidly connect a DEF inlet with a DEF tank; and checking, by means of a DQS, the quality of the DEF in the flow channel,