Piston engine and respective operating method
US7387116B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Apr 20, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An operating method is for a piston engine (1). The piston engine includes a plurality of cylinders (6) having intake valves (9), exhaust valves (10), combustion chambers (7), and pistons (8). A fresh gas system (2) contains an extra valve (13) assigned to the cylinders (6), a fuel system (5) and an exhaust system (4). The smooth running of the piston engine (1), includes having a fuel/fresh gas ratio in the exhaust gas being measured selectively for each cylinder in the exhaust system (4). The fuel system (5) is operated in such a way that it supplies the same amount of fuel to all combustion chambers (7) in steady-state operation of the piston engine (1). The extra valve (13) is operated in such a way that the quantity of fresh gas supplied to the combustion chambers (7) in steady-state operation is adjusted selectively for each cylinder as a function of the measured fuel/fresh gas ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.