Idle speed control system for a marine propulsion system
US6109986A · kind A · utility
74Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Dec 10, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H21/21
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An idle speed control system for a marine propulsion system controls the amount of fuel injected into the combustion chamber of an engine cylinder as a function of the error between a selected target speed and an actual speed. The speed can be engine speed measured in revolutions per minute or, alternatively, it can be boat speed measured in nautical miles per hour or kilometers per hour. By comparing target speed to actual speed, the control system selects an appropriate pulse with length for the injection of fuel into the combustion chamber and regulates the speed by increasing or decreasing the pulse width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.