Timing and speed sensor for fuel injection pump
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United States of America Patent
Stats
-
Nov 14, 1989
Issued Date -
N/A
app pub date -
Mar 22, 1988
filing date -
Nov 7, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
First and a second rotating members are driven in syntony with each other but at variable advance angles with respect to each other. A sensor (32) provides a position signal indicative of a predetermined rotational position of the first rotating member. A toothed wheel (40) is fixed to the second rotating member and a sensor (44) adjacent to the wheel provides a pulse indicative of each occurrence of tooth (42)/sensor (44) juxtaposition. The speed of the rotating members is determined by the pulse frequency or the time interval between the pulses. The advance angle is determined by measuring the time interval between the position signal and a particular pulse, such as the one immediately after the position signal, and multiplying the result by the determined speed.
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