公开(公告)号：US20210148293A1

公开(公告)日：2021-05-20

申请号：US16686728

申请日：2019-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael A. Smith ,  Dale A. Frank ,  Ryan J. Prescott ,  Manoj K. Moningi ,  Michael J. Lucido ,  Vijay Ramappan

IPC: F02D41/00 ,  F02D41/14 ,  F02D41/22 ,  F02D41/30 ,  F02D17/02 ,  F02D13/06

Abstract: Systems and methods are provided for determining and correcting air/fuel imbalance between cylinders of an internal combustion engine. A deactivation strategy is determined and implemented. An evaluation is made of whether the engine is operating with an air/fuel imbalance between cylinders. When an imbalance is identified, an alternate deactivation strategy is implemented. Based on outcomes of the alternate deactivation strategy, a source cylinder of the air/fuel imbalance is identified, and fuel flow to the source cylinder is corrected.

公开(公告)号：US11143287B2

公开(公告)日：2021-10-12

申请号：US16371864

申请日：2019-04-01

Applicant: GM Global Technology Operations LLC

Inventor： Dale A. Frank

IPC: F16K31/36 ,  F16H57/04 ,  F16K31/122 ,  F16K3/314

Abstract: A hydraulic control valve for controlling hydraulic circuits comprises a valve housing defining a valve bore, a first spool valve slidably positioned within the valve bore and adapted to control a first hydraulic circuit, and a second spool valve slidably positioned within the valve bore and adapted to control a second hydraulic circuit. The first spool valve and the second spool valve are positioned co-axially within the valve bore and are independently slidable within the valve bore to allow the first and second spool valves to control the first and second hydraulic valves independently of one another.

公开(公告)号：US20200309247A1

公开(公告)日：2020-10-01

申请号：US16371864

申请日：2019-04-01

Applicant: GM Global Technology Operations LLC

Inventor： Dale A. Frank

IPC: F16H57/04 ,  F16K31/36 ,  F16K3/314 ,  F16K31/122

Abstract: A hydraulic control valve for controlling hydraulic circuits comprises a valve housing defining a valve bore, a first spool valve slidably positioned within the valve bore and adapted to control a first hydraulic circuit, and a second spool valve slidably positioned within the valve bore and adapted to control a second hydraulic circuit. The first spool valve and the second spool valve are positioned co-axially within the valve bore and are independently slidable within the valve bore to allow the first and second spool valves to control the first and second hydraulic valves independently of one another.

公开(公告)号：US11168627B2

公开(公告)日：2021-11-09

申请号：US16686728

申请日：2019-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael A. Smith ,  Dale A. Frank ,  Ryan J. Prescott ,  Manoj K. Moningi ,  Michael J. Lucido ,  Vijay Ramappan

IPC: F02D41/00 ,  F02D41/14 ,  F02D41/22 ,  F02D41/30 ,  F02D17/02 ,  F02D13/06 ,  F02D41/34 ,  F01L13/00 ,  F02D41/24

Abstract: Systems and methods are provided for determining and correcting air/fuel imbalance between cylinders of an internal combustion engine. A deactivation strategy is determined and implemented. An evaluation is made of whether the engine is operating with an air/fuel imbalance between cylinders. When an imbalance is identified, an alternate deactivation strategy is implemented. Based on outcomes of the alternate deactivation strategy, a source cylinder of the air/fuel imbalance is identified, and fuel flow to the source cylinder is corrected.

公开(公告)号：US10443487B2

公开(公告)日：2019-10-15

申请号：US15493104

申请日：2017-04-20

Applicant: GM Global Technology Operations LLC

Inventor： Mark R. Claywell ,  Dale A. Frank ,  Maqsood Rizwan Ali Khan

IPC: F02B37/18 ,  F01D17/10 ,  F16K31/04 ,  H02K7/116

Abstract: A vehicle powertrain includes an engine having an air intake system and an exhaust system. A turbocharger includes a turbine section connected to the exhaust system and a compressor section connected to the air intake system. A wastegate is disposed in the exhaust system and movable between an open and a closed position by an actuator system. The actuator system includes a gear mechanism for moving the waste gate from a closed to an open position and including a pair of noncircular gears.