In-vehicle control apparatus
US11199229B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2020 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Oct 16, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/70402
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An in-vehicle control apparatus is configured to execute a collision degree calculation process of, when it is determined that gear rattle occurs, calculating a collision degree that indicates a magnitude of a collision between a sleeve chamfer and a gear chamfer based on a rotation speed difference between a sleeve and an idler gear, execute an index value calculation process of calculating an index value that correlates with wear and tear of the sleeve chamfer and the gear chamfer based on the collision degree that is calculated each time it is determined that gear rattle occurs, and execute a wear and tear degree calculation process of calculating a degree of wear and tear of the sleeve chamfer and the gear chamfer by integrating the index value that is calculated each time it is determined that gear rattle occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.