公开(公告)号：US09879616B2

公开(公告)日：2018-01-30

申请号：US15133582

申请日：2016-04-20

Applicant: GM Global Technology Operations LLC

Inventor： Ramakrishna Tatavarthi ,  Andrew J. Kosanka ,  Jinbiao Li

IPC: F01L1/34 ,  F02D13/02 ,  F01L13/00 ,  F02D41/00

CPC classification number: F02D13/0207 ,  F01L13/00 ,  F01L13/0005 ,  F01L13/0015 ,  F01L2013/001 ,  F02D41/0087 ,  F02D2041/0012 ,  F02D2200/101

Abstract: A system according to the present disclosure includes a cylinder deactivation module and a valve lift control module. The cylinder deactivation module selectively deactivates a first cylinder of an engine while a second cylinder of the engine is active. When the first cylinder is deactivated, the valve lift control module selectively adjusts a target lift state of a valve actuator of the engine to a first lift state to lift at least one of an intake valve of the second cylinder and an exhaust valve of the second cylinder by a first amount. The valve lift control module selectively adjusts the target lift state of the valve actuator to a second lift state to lift at least one of the intake valve and the exhaust valve by a second amount. The first and second amounts are greater than zero and the second amount is greater than the first amount.

公开(公告)号：US20180313356A1

公开(公告)日：2018-11-01

申请号：US15582949

申请日：2017-05-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shawn W. Murphy ,  Andrew J. Kosanka ,  Jay S. Meldrum ,  Layne K. Wiggins ,  Adam J. Heinzen

IPC: F04D27/00 ,  G01M15/08

CPC classification number: F04D27/001 ,  F04D17/10 ,  F04D25/024 ,  G01M15/08

Abstract: A method for compressor surge detection to enable model based air estimation includes determining if an intake air compressor pressure ratio is within a predetermined surge pressure range. Then the differences between mass air flow sensor signals measured at a start and finish of each count of a predetermined string length counter when the compressor pressure ratio is within the predetermined surge pressure range. Next, a transition is made to an air mass estimation model output signal from a mass air flow sensor signal when a sum of the air flow differences is greater than a predetermined compressor surge threshold.