Engine torque smoothing

US10060368B2 · kind B2 · utility

Assignee

• Tula eTechnology, Inc. · US

Inventors

• Mohammad R. Pirjaberi · San Jose, US
• Kian EISAZADEH-FAR · Berkeley, US
• Steven E. Carlson · Oakland, US
• Louis J. Serrano · Los Gatos, US
• Ying Ren · Shanghai, CN
• Joel D. Van Ess · Campbell, US

Key dates

• Filing date: Aug 17, 2017
• Grant date: Aug 28, 2018
• Expiry date: Aug 17, 2037

Classification

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

Abstract

Methods, devices, estimators, controllers and algorithms are described for estimating the torque profile of an engine and/or for controlling torque applied to a powertrain by one or more devices other than the engine itself to manage the net torque applied by the engine and other device(s) in manners that reduce undesirable NVH. The described approaches are particularly well suitable for use in hybrid vehicles in which the engine is operated in a skip fire or other dynamic firing level modulation manner—however they may be used in a variety of other circumstances as well. In some embodiments, the hybrid vehicle includes a motor/generator that applies the smoothing torque.