公开(公告)号：US20170269051A1

公开(公告)日：2017-09-21

申请号：US15503654

申请日：2015-08-17

Applicant: Cummins, Inc.

Inventor： Leon A. LaPointe

IPC: G01N33/22 ,  G01N31/12 ,  C10L3/06

CPC classification number: G01N33/225 ,  C01B3/382 ,  C01B3/386 ,  C01B2203/0261 ,  C01B2203/1235 ,  C01B2203/1241 ,  C01B2203/142 ,  C01B2203/16 ,  C10L3/06 ,  C10L2290/60 ,  G01N31/12

Abstract: Disclosed are methods, systems, and computer-readable mediums for determining the composition of gaseous fuel. An initial gaseous fuel stream is provided that includes methane, non-methane hydrocarbons, and inert gases. Air is mixed into the initial fuel stream upstream of a first catalyst. The first catalyst oxidizes only the non-methane hydrocarbons of the initial fuel stream to produce a resultant fuel stream comprising methane and inert gases. Air is mixed into the resultant fuel stream downstream of the first catalyst and upstream of a second catalyst. The second catalyst oxidizes only the methane hydrocarbons of the resultant fuel stream to produce an output fuel stream. Mole ratios of the methane, the non-methane hydrocarbons, and the inert gases of the initial fuel stream are each determined.

公开(公告)号：US20160290288A1

公开(公告)日：2016-10-06

申请号：US14678323

申请日：2015-04-03

Applicant: Cummins, Inc.

Inventor： Leon A. LaPointe ,  Daniel J. Mohr ,  Edward J. Lyford-Pike ,  Ashish Gupta

IPC: F02M26/22 ,  F02M26/04

CPC classification number: F02B29/0437 ,  F02B29/0493 ,  F02D21/08 ,  F02M21/0215 ,  F02M26/06 ,  F02M26/28 ,  F02M26/33 ,  Y02T10/146 ,  Y02T10/32

Abstract: A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.