公开(公告)号：US20180223709A1

公开(公告)日：2018-08-09

申请号：US15425433

申请日：2017-02-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Glenn Pietila ,  Amin Abdossalami ,  Lei Li ,  Roger C. Barlow, JR. ,  Jacob A. Holbrook

IPC: F01N1/16

CPC classification number: F01N1/165 ,  F01N1/168 ,  F01N2240/36

Abstract: A system for controlling exhaust noise in a vehicle includes a variable exhaust valve for an exhaust system, and an exhaust valve controller operatively connectable to the variable exhaust valve. The exhaust valve controller is configured to retrieve two or more control conditions, and determine an operational intent based on the two or more control conditions. The exhaust valve controller is configured to generate a control signal based on the operational intent and the two or more control conditions, and transmit the control signal to the variable exhaust valve. The control signal changes an exhaust valve position of the variable exhaust valve. The exhaust valve position is configured to create an exhaust noise response associated with the operational intent.

公开(公告)号：US09677438B2

公开(公告)日：2017-06-13

申请号：US14886406

申请日：2015-10-19

Applicant: GM Global Technology Operations LLC

Inventor： Jacob A. Holbrook ,  Roger C. Barlow, Jr. ,  Frank C. Valeri

IPC: F01N1/16 ,  F01N1/18

CPC classification number: F01N1/168 ,  F01N1/16 ,  F01N1/18 ,  F01N9/00 ,  F01N2240/36 ,  F01N2390/02 ,  F01N2900/08 ,  F01N2900/10 ,  G01H3/00 ,  Y02T10/47

Abstract: A system in a vehicle including at least one sound quality valve arranged in an exhaust system of the vehicle includes a sound quality valve control module that determines whether one or more criteria for opening the sound quality valve are met, selectively actuates the sound quality valve to an open position if the one or more criteria for opening the sound quality valve are met, and maintains the sound quality valve in a closed position if a required one of the one or more criteria for opening the sound quality valve is not met. A downshift detection module determines whether aggressive driving behavior is detected. If the aggressive driving behavior is detected, the sound quality valve control module actuates the sound quality valve to the open position regardless of whether the required one of the one or more criteria for opening the sound quality valve is met.