公开(公告)号：US10358954B2

公开(公告)日：2019-07-23

申请号：US15585463

申请日：2017-05-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Douglas R. Verner ,  Timothy Karnjate ,  Timothy P Philippart

IPC: G01M15/04 ,  F01L13/00 ,  G01D5/14 ,  G01D3/032 ,  F01L1/053 ,  F01L1/18

Abstract: A method of noise filtering a sliding camshaft actuator pin position output signal includes determining an actual pin position output signal period of a sliding camshaft actuator that occurs within a predetermined output signal period measurement window and establishing a pin position output signal filter window based on the actual pin position output signal period. Thereafter, the actual pin position output signal period from the sliding camshaft actuator is monitored by a control module and signals that occur outside of the pin position output signal filter window are rejected accordingly to prevent responding to false triggers.

公开(公告)号：US10135269B2

公开(公告)日：2018-11-20

申请号：US15211800

申请日：2016-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： S M N Hasan ,  Timothy P Philippart ,  Sam Barakat

IPC: H02H7/18 ,  H02J7/00 ,  H03K17/687 ,  H02J7/34

Abstract: A circuit for connecting a voltage source to a load is provided. The circuit may include a Vbatt node configured to be connected to a voltage source and a diode electrically connected with the Vbatt node. A battery isolation switch module is electrically connected with the diode, the diode being arranged in series between the battery isolation switch module and the Vbatt node. A capacitor bank is electrically connected with the battery isolation switch module and to ground. The capacitor bank is configured to be further connected with a microprocessor power supply. A high side driver may be configured to receive power from the voltage source. The diode is configured to isolate the capacitor bank and the power supply. The diode is arranged to prevent current from flowing back through the diode from the battery isolation switch module and the capacitor bank to the Vbatt node or HSD output.

公开(公告)号：US10344734B2

公开(公告)日：2019-07-09

申请号：US15637507

申请日：2017-06-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy P Philippart ,  Douglas R Verner ,  Dimitri Karatsinides ,  Timothy Karnjate

IPC: F02P7/077 ,  F01L1/25 ,  F02D41/22 ,  F01L13/00 ,  F02B77/08 ,  F02D41/00

Abstract: A method of determining a sliding camshaft actuator pin position based on engine crankshaft angle includes commanding a sliding camshaft actuator to perform a valve step shift, and monitoring an actuator's pin position during the valve step shift command. At least one crank angle is measured when the actuator pin position reaches or exceeds at least one predetermined pin position threshold and at least one remedial action is performed when the actuator pin position does not correlate to the at least one measured crank angle.