公开(公告)号：US20180195441A1

公开(公告)日：2018-07-12

申请号：US15914551

申请日：2018-03-07

Applicant: Cummins Inc.

Inventor： Jing Wang ,  Richard A. Booth ,  Phanindra Garimella

IPC: F02D9/02 ,  F02D13/02 ,  F02D41/00 ,  F02D41/14

CPC classification number: F02D9/02 ,  F02D13/0219 ,  F02D13/0238 ,  F02D41/0002 ,  F02D2009/023 ,  F02D2041/001 ,  F02D2041/002 ,  F02D2041/1412 ,  F02D2200/101 ,  Y02T10/18 ,  Y02T10/42

Abstract: Methods and apparatus relate to air handling for an internal combustion engine system, particularly utilizing premixed air and fuel. The engine system includes an intake air throttle (IAT) having a position set in response to the engine speed and a variable valve timing module having an intake valve timing set in response to the engine load. The variable valve timing module may be a cam phaser having a position at or between full retard and full advance positions. The engine system may operate in a transient mode or a fuel efficiency mode. The IAT position is adjusted in response to an engine speed error value or set at full throttle. The cam phaser position is adjusted in response to a pressure difference across the IAT, the engine speed, or is set to a limit position.

公开(公告)号：US09926856B2

公开(公告)日：2018-03-27

申请号：US14826969

申请日：2015-08-14

Applicant: Cummins Inc.

Inventor： Jing Wang ,  Richard A. Booth ,  Phanindra Garimella

IPC: F01L1/34 ,  F02D9/02 ,  F02D13/02 ,  F02D41/00 ,  F02D41/14

CPC classification number: F02D9/02 ,  F02D13/0219 ,  F02D13/0238 ,  F02D41/0002 ,  F02D2009/023 ,  F02D2041/001 ,  F02D2041/002 ,  F02D2041/1412 ,  F02D2200/101 ,  Y02T10/18 ,  Y02T10/42

Abstract: Methods and apparatus relate to air handling for an internal combustion engine system, particularly utilizing premixed air and fuel. The engine system includes an intake air throttle (IAT) having a position set in response to the engine speed and a variable valve timing module having an intake valve timing set in response to the engine load. The variable valve timing module may be a cam phaser having a position at or between full retard and full advance positions. The engine system may operate in a transient mode or a fuel efficiency mode. The IAT position is adjusted in response to an engine speed error value or set at full throttle. The cam phaser position is adjusted in response to a pressure difference across the IAT, the engine speed, or is set to a limit position.

公开(公告)号：US20170044999A1

公开(公告)日：2017-02-16

申请号：US14826969

申请日：2015-08-14

Applicant: Cummins Inc.

Inventor： Jing Wang ,  Richard A. Booth ,  Phanindra Garimella

IPC: F02D9/02 ,  F02D13/02

CPC classification number: F02D9/02 ,  F02D13/0219 ,  F02D13/0238 ,  F02D41/0002 ,  F02D2009/023 ,  F02D2041/001 ,  F02D2041/002 ,  F02D2041/1412 ,  F02D2200/101 ,  Y02T10/18 ,  Y02T10/42

Abstract: Methods and apparatus relate to air handling for an internal combustion engine system, particularly utilizing premixed air and fuel. The engine system includes an intake air throttle (IAT) having a position set in response to the engine speed and a variable valve timing module having an intake valve timing set in response to the engine load. The variable valve timing module may be a cam phaser having a position at or between full retard and full advance positions. The engine system may operate in a transient mode or a fuel efficiency mode. The IAT position is adjusted in response to an engine speed error value or set at full throttle. The cam phaser position is adjusted in response to a pressure difference across the IAT, the engine speed, or is set to a limit position.

Abstract translation: 方法和装置涉及内燃机系统的空气处理，特别是利用预混空气和燃料。 发动机系统包括具有响应于发动机转速而设定的位置的进气节气门（IAT）和具有响应于发动机负荷而设定的进气门正时的可变气门正时模块。 可变气门正时模块可以是具有在完全延迟和完全提前位置之间或之间的位置的凸轮相位器。 发动机系统可以在瞬时模式或燃料效率模式下操作。 IAT位置是根据发动机转速误差值进行调整或设定为全速。 响应于跨越IAT的压力差，发动机转速或者被设定为极限位置来调整凸轮相位器位置。