Rotary internal combustion engine with variable volumetric compression ratio
US9540992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jan 10, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for controlling an air input in a rotary engine, including selectively controlling a plurality of inlet ports communicating with an internal combustion cavity of the engine, the ports located serially downstream of the exhaust port relative direction of a revolution of a rotor of the engine. The inlet ports are controlled to alter air intake at various engine operational stages, such as start up, idle, etc., to allow for varying operational requirements to be met. For example: when a power demand on the engine lower than a predetermined threshold, control may be effected by opening a primary inlet port and closing a secondary inlet port; and, when the power demand exceeds the predetermined threshold, control may be effected by opening the primary inlet port and opening the secondary inlet port, the secondary inlet port being located such as to be in communication with the exhaust port throughout portions of the revolution of the engine to purge exhaust gases of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.