Engine overspeed shut-down system
US4282838A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Mar 2, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D17/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
PCT No. PCT/US79/00128 Sec. 371 Date Mar. 2, 1979 Sec. 102(e) Date Mar. 2, 1979 PCT Filed Mar. 2, 1979 PCT Pub. No. WO80/01821 PCT Pub. Date Sept. 4, 1980 A system for shutting-down an engine upon overspeeding thereof comprises an engine-driven shaft (19) having a flyweight mechanism (27) connected thereto and engageable with a reciprocally mounted trip shaft (32). The trip shaft (32) is, in turn, engageable with a pivotal latch (33) which is adapted to normally hold a spring-loaded control piston (44) in an inactive first position for permitting normal engine operation. A cable (12) connects the control piston (44) to a flapper valve (11), pivotally mounted in the intake manifold (13) of an engine. The manifold (13) is adapted to be closed upon tripping of the latch (33) to disengage the control piston (44) to permit its movement to an activated second position when the engine speed exceeds a predetermined maximum speed. Closing of the flapper valve (11) will create a vacuum in the intake manifold (13) which, in turn, opens a vacuum valve (14) mounted thereon to responsively move a rack (16) of a fuel control system (17) to a closed position to prevent communication of fuel to the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.