Servo controlled exhaust gas recycle system
US4064851A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Aug 12, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87113
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust gas recycle valve adjusts the amount of exhaust gas returned to the induction manifold and the degree of opening of the recycle valve is controlled by the main throttle valve. In one embodiment of the invention, an extended throttle shaft carries a set of contact strips and a complementary shaft, coupled to the exhaust gas valve, carries contact pins which cooperate with the contact strips to open or close an electrical connection between a power source and an electric motor. When the strips and the pins are rotated relative to one another, as when the throttle is moved, the motor is energized and adjusts the position of the exhaust gas valve until the relative position of the strips and the pins is again such as to interrupt conduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.