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 BERU AG 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.
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The innovative BERU Pressure Sensor Glow Plug is an intelligent glow plug with integrated combustion chamber pressure sensor which reports data to the engine control electronics.
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Technical features
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Sensor principle : piezoresistive
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Flexible heating rod for pressure transmission
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Robust sealing element between body and heating rod
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Miniaturised electronics integrated in the upper part of the glow plug
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Calibrated and and customer-specific programmed
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Integrated concentric automotive plug
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Technical data
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Operating temperature
Pressure range
Sensor
Power supply (Vdd)
Output signal
Bandwidth
Accuracy
Glow function
Current 60sec
Temperature after 60sec
Max. temperature
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-40 – 140°C (max. 150°C)
0 – 200 bar (max. 210 bar)
5.0 V or 3.3 V
ratio metric
0 to 5 kHz
± 2%
<10 A
> 980°C
1100°C
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Plug
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High voltage connection
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Circuit board with electronics
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Gasket
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Measuring diaphragm
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Glow plug body
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Glow plug heating rod
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Animation about the structure of the PSG (Pressure Sensor Glow Plug)
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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.
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