Piston engine
US7789064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2007 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Jan 30, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston engine (10), in particular in a motor vehicle, has a plurality of cylinders (3) whose combustion chambers (4) are connected to a fresh gas system (5). The fresh gas system (5) has two gas paths, namely a full-load path (9) and a partial-load path (10), for at least one of the cylinders (3), through which the fresh gas (6) can be supplied to the respective combustion chamber (4). To this end, a valve arrangement (11) at the intake end is provided for controlling the fresh gas stream through the gas paths (9, 10) into the respective combustion chamber (4). For actuation of the valve arrangement (11), a control unit (13) is provided, the control unit being designed so that it permanently blocks the full-load path (9) through appropriate control of the valve arrangement (11) at partial load and actuates the partial-load path (10) for controlling the fresh gas stream and through appropriate control of the valve arrangement (11) at full load, it actuates at least the full-load path (9) for controlling the fresh gas stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.