公开(公告)号：US11060471B1

公开(公告)日：2021-07-13

申请号：US16740978

申请日：2020-01-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Edward J. Keating ,  Robert S. McAlpine ,  Lisa M. Marcella-O'Leary

IPC: F02B47/08 ,  F02D41/00

Abstract: An engine system includes: an internal combustion engine having a plurality of cylinders; a bypass valve arranged to receive exhaust output from at least a dedicated one of the cylinders and to selectively one of: direct the exhaust through an exhaust system to atmosphere; and direct the exhaust to an exhaust gas recirculation (EGR) valve; the EGR valve, where the EGR valve is configured to, when open, enable flow of the exhaust to an intake manifold of the internal combustion engine; and an intake air valve located between an air cleaner and a mass airflow (MAF) sensor and configured to, when open, enable flow of ambient air to the intake manifold.

公开(公告)号：US11598253B1

公开(公告)日：2023-03-07

申请号：US17743087

申请日：2022-05-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lisa M. Marcella-O'Leary ,  David J. Hajdyla ,  Grant Brady ,  Bret J. Kukulis ,  Robert S. McAlpine

IPC: F02B37/18 ,  F15B1/02

Abstract: A wastegate system of a vehicle includes: a wastegate valve configured to regulate exhaust flow through a turbine of a turbocharger of an engine; a wastegate actuator including a lever that is mechanically coupled to the wastegate valve via one or more linkages and that is configured to move linearly based on a pressure within an interior of the wastegate actuator; a resonator that is fluidly coupled to the interior of the wastegate actuator via a first one or more hoses and that is configured to counteract force attributable to pressure changes in the exhaust from combustion events within the engine; and a regulator valve that is fluidly connected between a pneumatic source and the resonator via a second one or more hoses and that is configured to regulate the pressure within the interior of the wastegate actuator.