Rotational speed control apparatus for internal combustion engines
US4522175A · kind A · utility
5Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1984 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Apr 10, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D11/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a rotational speed control apparatus for an internal combustion engine in which a signal-responsive diaphragm, whose controlling position is determined by a controlled negative pressure signal, is provided with a valve member controlling to negative pressure acting upon a driving diaphragm controlling the opening of a throttle valve, the negative pressure acting upon the driving diaphragm, when the controlled negative pressure signal is detected to be not normal, is controlled to be shifted to the level at which the driving diaphragm is rendered substantially non-operable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.