公开(公告)号：US10746089B2

公开(公告)日：2020-08-18

申请号：US15879647

申请日：2018-01-25

Applicant: Caterpillar Inc.

Inventor： Jeremy Byrd ,  Eric L. Schroeder ,  Liangtao Zhu ,  Arvind Sivasubramanian ,  Ryan T. Sunley ,  Craig P. Hittle ,  Aaron L. Robinson

IPC: F02B37/02 ,  F02B37/007 ,  F02C6/12 ,  F01N13/00 ,  F02D13/02 ,  F01N13/18 ,  F01D25/12 ,  F02D41/00 ,  F01D25/14 ,  F02B37/22 ,  F02B37/00 ,  F02D9/04 ,  F02B75/22 ,  F02F1/42 ,  F02B75/18 ,  F02M35/116 ,  F01N3/04 ,  F02D41/22 ,  F02B33/40 ,  F02M35/10 ,  F02B39/00

Abstract: An internal combustion engine having an exhaust log structure onto which a plurality of turbochargers is connected, each turbocharger having a turbine connected to the exhaust log structure and having an inlet fluidly connectable to a respective one of the plurality of outlet ports, an exhaust valve disposed at a turbine outlet such that the flow of exhaust gas out of the turbine is fluidly blocked, and an actuator associated with the exhaust valve and operating to move the exhaust valve from a closed position to an open position and vice versa. An electronic controller provides a command to the actuator to move the exhaust valve between the open and closed positions and is programmed to selectively open two one or more exhaust valves based on an operating condition of the engine.

公开(公告)号：US11286845B2

公开(公告)日：2022-03-29

申请号：US16505323

申请日：2019-07-08

Applicant: Caterpillar Inc.

Inventor： Shivangi Wagle ,  Liangtao Zhu ,  Kevin Sergott ,  Eric Schroeder ,  Arvind Sivasubramanian ,  Travis Barnes

IPC: F02B37/22 ,  F02B37/00 ,  F02B37/007 ,  F02D17/02 ,  F02D41/00

Abstract: A method for controlling and engine system with a plurality of turbochargers. At least one of the plurality of turbochargers has a turbine valve, a compressor valve, and actuators operable to change the position of the turbine valve. The method comprises controlling the actuator based on the presence of a transient event or a steady state event. During a transient event an engine control module can control the actuators to change the turbine valve to opened and closed positions and the turbine valve to a closed position based on the comparison between a corrected mass flow per turbocharger to a mass flow threshold.

公开(公告)号：US20190226389A1

公开(公告)日：2019-07-25

申请号：US15879647

申请日：2018-01-25

Applicant: Caterpillar Inc.

Inventor： Jeremy Byrd ,  Eric L. Schroeder ,  Liangtao Zhu ,  Arvind Sivasubramanian ,  Ryan T. Sunley ,  Craig P. Hittle ,  Aaron L. Robinson

IPC: F02B37/02 ,  F02B37/007 ,  F02C6/12 ,  F01N13/00 ,  F02D13/02

Abstract: An internal combustion engine having an exhaust log structure onto which a plurality of turbochargers is connected, each turbocharger having a turbine connected to the exhaust log structure and having an inlet fluidly connectable to a respective one of the plurality of outlet ports, an exhaust valve disposed at a turbine outlet such that the flow of exhaust gas out of the turbine is fluidly blocked, and an actuator associated with the exhaust valve and operating to move the exhaust valve from a closed position to an open position and vice versa. An electronic controller provides a command to the actuator to move the exhaust valve between the open and closed positions and is programmed to selectively open two one or more exhaust valves based on an operating condition of the engine.

公开(公告)号：US20210010411A1

公开(公告)日：2021-01-14

申请号：US16505323

申请日：2019-07-08

Applicant: Caterpillar Inc.

Inventor： Shivangi Wagle ,  Liangtao Zhu ,  Kevin Sergott ,  Eric Schroeder ,  Arvind Sivasubramanian ,  Travis Barnes

IPC: F02B37/22 ,  F02B37/00 ,  F02B37/007 ,  F02D41/00 ,  F02D17/02

Abstract: A method for controlling and engine system with a plurality of turbochargers. At least one of the plurality of turbochargers has a turbine valve, a compressor valve, and actuators operable to change the position of the turbine valve. The method comprises controlling the actuator based on the presence of a transient event or a steady state event. During a transient event an engine control module can control the actuators to change the turbine valve to opened and closed positions and the turbine valve to a closed position based on the comparison between a corrected mass flow per turbocharger to a mass flow threshold.