Measuring and testing – Test stand – For engine
Patent
1987-11-12
1988-10-25
Myracle, Jerry W.
Measuring and testing
Test stand
For engine
123149D, 310153, G01M 1500
Patent
active
047794542
ABSTRACT:
An annular permanent magnet rotor (8) is mounted around and fixed to a crankshaft (4) of an internal combustion engine (2) and has a plurality of circumferentially spaced magnetic poles (14) of sequentially alternating north-south polarity type, and a pole (18) reversed out of the alternating sequence. A first fixed stator (24) is provided by an annular ring concentric to the rotor (8) and has a plurality of poles (26) for magnetic flux coupling with the permanent magnet rotor poles (14). A second fixed stator (48) is axially spaced from the first stator (24) and has a pair of poles (50, 52) for magnetic flux coupling with the rotor (8). A first sensor coil (40) around the first stator (24) outputs a timing angle signal. Processing circuitry produces a series of digital pulses having ANGLE-defining edges occurring at fixed angular increments of crankshaft rotation. A second sensor coil (56) around the second stator (48) outputs an advance warning signal that a specific REFERENCE ANGLE-defining edge is about to appear in the series of digital pulses produced from the first sensor coil's output.
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Fitzner Arthur O.
Harmer William D.
Brunswick Corp.
Myracle Jerry W.
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