公开(公告)号：US20170089273A1

公开(公告)日：2017-03-30

申请号：US15278330

申请日：2016-09-28

Applicant: Cummins Inc.

Inventor： Robert J. Thomas ,  Axel Otto Zur Loye ,  Timothy P. Lutz ,  Christopher Pollitt ,  Phanindra V. Garimella

IPC: F02D19/08 ,  F02D19/06

CPC classification number: F02D19/081 ,  F02D19/0642 ,  F02D35/027 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/2416 ,  F02D41/2422 ,  F02D41/401 ,  F02D41/402 ,  F02D2041/1433 ,  F02D2200/1004 ,  F02D2250/31 ,  Y02T10/36

Abstract: Apparatuses, methods and systems for controlling operation of dual fuel engines are disclosed. One embodiment is a method for controlling operation of a dual fuel engine based upon a combustion index value. The combustion index may be empirically determined to provide desired engine operation at a plurality of ratios of gaseous fuel and liquid fuel. The desired engine operation may include a number of criteria including, for examiner an engine knock criterion and/or an exhaust emissions criterion. The combustion index value may be determined during operation of the engine based upon measured, estimated or predicted engine operating parameters. The combustion index value may be utilized to interpolate between a first engine operating map for a first ratio of gaseous fuel and liquid fuel and a second engine operating map for a second ratio of gaseous fuel and liquid fuel.

公开(公告)号：US10227934B2

公开(公告)日：2019-03-12

申请号：US15278330

申请日：2016-09-28

Applicant: Cummins Inc.

Inventor： Robert J. Thomas ,  Axel Otto Zur Loye ,  Timothy P. Lutz ,  Christopher Pollitt ,  Phanindra V. Garimella

IPC: F02D19/08 ,  F02D19/06 ,  F02D41/24 ,  F02D35/02 ,  F02D41/00 ,  F02D41/40 ,  F02D41/14

Abstract: Apparatuses, methods and systems for controlling operation of dual fuel engines are disclosed. One embodiment is a method for controlling operation of a dual fuel engine based upon a combustion index value. The combustion index may be empirically determined to provide desired engine operation at a plurality of ratios of gaseous fuel and liquid fuel. The desired engine operation may include a number of criteria including, for examiner an engine knock criterion and/or an exhaust emissions criterion. The combustion index value may be determined during operation of the engine based upon measured, estimated or predicted engine operating parameters. The combustion index value may be utilized to interpolate between a first engine operating map for a first ratio of gaseous fuel and liquid fuel and a second engine operating map for a second ratio of gaseous fuel and liquid fuel.