Internal combustion engine with pressure-wave supercharger and lambda probe
US4798049A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Jul 2, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B33/42
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an internal combustion engine supercharged by a pressure-wave supercharger (2), a lambda probe (7) is used for measurement of the oxygen content in the circuit. The oxygen content determined by the lambda probe (7) creates a measuring signal (9), which is used for controlling the throttle valve (4) and/or the starting valve (6). This control is aimed at reducing the NO.sub.x emissions from the combustion and possibly ensuring the regeneration of an exhaust gas particle filter (3) integrated in the circuit. In this arrangement, the lambda probe (7) is to be placed in the low-pressure exhaust gas line (444), which has a positive effect on the response capability and the accuracy of the measured data of the probe (7). This obviates the need for additional aids for the correction of pressure fluctuations such as occur at other points in the circuit of the internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.