公开(公告)号：US20200156613A1

公开(公告)日：2020-05-21

申请号：US16689824

申请日：2019-11-20

Applicant: Cummins Inc.

Inventor： Adam C. Cecil ,  Adrian P. Dale ,  Anshul Shambav ,  Anthony K. Perfetto ,  David J. Stroh ,  J. Steven Kolhouse ,  Ryan E. Schultz ,  Samuel C. Geckler ,  Thomas M. Yonushonis

IPC: B60T17/22 ,  B60T8/17 ,  B60W30/18 ,  F01N13/10

Abstract: A system for diagnosing engine braking performance of an engine comprising a plurality of cylinders comprises an exhaust manifold pressure sensor configured to detect an exhaust manifold pressure corresponding to exhaust gas emitted from a plurality of cylinders. A controller is configured to determine an exhaust manifold pressure value corresponding to at least one cylinder of the plurality of cylinders that is being used for engine braking, from an exhaust manifold pressure sensor signal received from the exhaust manifold pressure sensor. The controller is also configured to determine an engine braking value based on the exhaust manifold pressure value.

公开(公告)号：US11022050B2

公开(公告)日：2021-06-01

申请号：US16124923

申请日：2018-09-07

Applicant: CUMMINS INC.

Inventor： Ryan E. Schultz ,  Anthony Kyle Perfetto

IPC: F02D13/04 ,  F02D41/12 ,  F02D31/00 ,  F02D29/02

Abstract: A system is provided for controlling operation of an engine brake system of an engine in a vehicle. The system includes a controller having an over-speed condition detection unit and an operation mode transition unit. The over-speed condition detection unit is configured to detect an over-speed condition based on a current engine speed and a fuel cut limit speed, the fuel cut limit speed being a predetermined engine speed at which fuel supplied to the engine is suspended. The operation mode transition unit is configured to control the operation of the engine brake system by transitioning the controller between a plurality of brake operation modes based on at least one transition parameter.

公开(公告)号：US20190178167A1

公开(公告)日：2019-06-13

申请号：US16124923

申请日：2018-09-07

Applicant: CUMMINS INC.

Inventor： Ryan E. Schultz ,  Anthony Kyle Perfetto

IPC: F02D13/04

Abstract: A system is provided for controlling operation of an engine brake system of an engine in a vehicle. The system includes a controller having an over-speed condition detection unit and an operation mode transition unit. The over-speed condition detection unit is configured to detect an over-speed condition based on a current engine speed and a fuel cut limit speed, the fuel cut limit speed being a predetermined engine speed at which fuel supplied to the engine is suspended. The operation mode transition unit is configured to control the operation of the engine brake system by transitioning the controller between a plurality of brake operation modes based on at least one transition parameter.