Adaptive torque mitigation by micro-hybrid system
US10344692B2 · kind B2 · utility
30Cited by
75References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2018 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Apr 4, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a dynamic firing level modulation manner. A smoothing torque is determined by adaptive control that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.