Pressure Sensor Glow Plug (PSG) for diesel engines
The future exhaust gas limit values for diesel vehicles demand a drastic reduction in particles and nitrogen oxide. This demands optimisation of the combustion among other things. The BorgWarner BERU Systems GmbH has developed the intelligent pressure sensor glow plug for this purpose. The PSG measures the pressure in the combustion chamber with an integrated sensor and reports this to the engine control electronics. This innovative concept will pay a key role in the further reduction of the diesel emissions and has already won numerous innovation awards.
Pressure Sensor Glow Plug (PSG)
Technical features
- Sensor principle : piezoresistive
- Flexible heating rod for pressure transmission
- Robust sealing element between body and heating rod
- Miniaturised electronics integrated in the upper part of the glow plug
- Calibrated and and customer-specific programmed
- Integrated concentric automotive plug
| Technical data | |
|---|---|
| Operating temperature | -40 – 140°C (max. 150°C) |
| Pressure range | 0 – 200 bar (max. 210 bar) |
| Sensor | |
| Power supply (Vdd) | 5,0 V or 3,3 V |
| Output signal | ratio metric |
| Bandwidth | 0 to 5 kHz |
| Accuracy | ± 2% |
| Glow function | |
| Current 60sec | < 10 A |
| Temperature after 60sec | > 980°C |
| Max. temperature | 1100°C |
- Plug
- Circuit board with electronics
- Glow plug body
- Glow plug heating rod
- High voltage connection
- Measuring diaphragm
- Gasket
Pressure curves in comparison
The following pressure curves show the course of a PSG signal and a reference sensor signal in the combustion chamber of a test bench engine.
| Attachment | Size |
|---|---|
| file format Windows Media (0.2 MB) | 193.2 KB |
| file format Quicktime (2.4 MB) | 2.47 MB |
