| 摘要 |
<p>A phase recognition device for an internal combustion engine with a crankshaft comprising a transmitter disc (10) comprising incremental angular marking means and a sensor associated with the transmitter disc for generating a sensor signal representative of the passage of the incremental angular marking means in front of the sensor. The transmitter disc (10) rotates at half the speed of the crankshaft. The incremental angular marking means comprises at least two series of a multiplicity of incremental angular marks (12, 14), which extend over complementary angular portions of the transmitter disc (10), each series of a multiplicity of incremental angular marks (12, 14) causing the sensor to generate a distinct sensor signal.
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