Fuel control system for internal combustion engines
US4265163A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1979 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | Jul 31, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The amount of axial movement of a plunger is controlled by a hydraulic servomechanism. The pressure in the hydraulic chamber of the servomechanism is controlled by opening and closing an inlet valve and outlet valve provided respectively at the inlet and outlet sides of the hydraulic chamber. When the difference value between the actual position and desired position of the plunger is greater than a first predetermined value, only one or the other of the inlet and outlet valves is energized. When the difference is intermediate the first predetermined value and a second predetermined value which is smaller than the former, the inlet and outlet valves are energized at different duty cycles. When the difference is smaller than the second predetermined value, the valves are both deenergized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.