Systems and methods for facilitating shift changes in marine propulsion devices
US9043058B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2013 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Dec 30, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2021/216
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and systems are for facilitating shift changes in a marine propulsion device having an internal combustion engine and a shift linkage that operatively connects a shift control lever to a transmission for effecting shift changes amongst a reverse gear, a neutral gear and a forward gear. A position sensor senses position of the shift linkage. A speed sensor senses speed of the engine. A control circuit compares the speed of the engine to a stored engine speed and modifies, based upon the position of the shift linkage when the speed of the engine reaches the stored engine speed, a neutral state threshold that determines when the control circuit ceases reducing the speed of the engine to facilitate a shift change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.