公开(公告)号：WO2016095044A1

公开(公告)日：2016-06-23

申请号：PCT/CA2015/051336

申请日：2015-12-16

Applicant: WESTPORT POWER INC.

Inventor： CARVALHO, Steed ,  LEE, Kevin Derek ,  GHAZI, Ahmad

IPC: F02B45/10 ,  F02B69/04 ,  F02D19/06 ,  F02D19/08 ,  F02D19/10 ,  F02D41/40 ,  F02M25/00

CPC classification number: F02D19/105 ,  F02B37/16 ,  F02B37/18 ,  F02B69/04 ,  F02D19/0628 ,  F02D19/0692 ,  F02D41/0007 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/005 ,  F02D41/40 ,  F02D41/401 ,  F02D2250/21 ,  F02M26/05 ,  F02M26/23 ,  Y02T10/144 ,  Y02T10/36 ,  Y02T10/44

Abstract: During transition between operating modes on a dual fuel engine, when the engine switches from operating with one fuel to operating with another fuel, there has been the problem of maintaining engine torque within a predetermined range. An improved method for operating an internal combustion engine comprises selecting between operating in a liquid fuel mode with a liquid fuel and a dual fuel mode with a liquid fuel and a gaseous fuel; adjusting an air system to set-points associated with one of the dual fuel mode when transitioning to the dual fuel mode and the liquid fuel mode when transitioning to the liquid fuel mode, as a function of engine operating conditions; and adjusting at least one of liquid fuel injection quantity and liquid fuel injection timing in response to changes in the air system when transitioning to one of the dual fuel mode and the liquid fuel mode, as a function of engine operating conditions.

Abstract translation: 在双燃料发动机的操作模式之间的转换期间，当发动机从一个燃料转换到另一个燃料运行时，存在将发动机扭矩维持在预定范围内的问题。 一种用于操作内燃机的改进方法包括在液体燃料模式与液体燃料和双燃料模式之间选择液体燃料和气态燃料; 作为发动机工作条件的函数，将空气系统调整到当转换到双燃料模式时与双燃料模式中的一个相关联的设定点和当转换到液体燃料模式时的液体燃料模式; 以及当根据发动机工作条件转换到双燃料模式和液体燃料模式之一时，响应于空气系统的变化来调节液体燃料喷射量和液体燃料喷射正时中的至少一个。