Noise/vibration reduction control

US10400691B2 · kind B2 · utility

Assignee

• Tula eTechnology, Inc. · US

Inventors

• Louis J. Serrano · Los Gatos, US
• Vijay Srinivasan · Durham, US
• Geoffrey ROUTLEDGE · Gilroy, US
• Mark A. Shost · Northville, US
• Biswa R. Ghosh · Sunnyvale, US
• Mark A. Wilcutts · Berkeley, US
• Matthew A. Younkins · San Jose, US
• Ying Ren · Shanghai, CN

Key dates

• Filing date: Feb 12, 2018
• Grant date: Sep 3, 2019
• Expiry date: Apr 16, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Systems and methods for reducing noise or vibration generated by an internal combustion engine are described. An engine controller is arranged to operate the working chambers of the engine in a cylinder output level modulation manner. A noise/vibration reduction unit actively control of a device that is not a part of the powertrain. The device is controlled in a feed forward manner to alter an NVH characteristic of the vehicle in a desired manner based at least in part on a characteristic of the cylinder output level modulation operation of the engine.