Engine driven working machine
US9726095B2 · kind B2 · utility
5Cited by
7References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 13, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jan 8, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P5/1508
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine-driven working machine including a controller by which a time period until the rotation speed limitation mode is canceled can be shortened. After a throttle valve is moved to a fully-closed position by an operation to allow the engine to finish the fast idling state and while the engine is transited to an idling state, the controller cancels the rotation speed limitation mode by detecting an event in which a cycle period of rotation speed variations of the engine is longer than a cycle period of rotation speed variation in the fast idling state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.