G - Physics – 01 – M
Patent
G - Physics
01
M
341/38.17
G01M 15/00 (2006.01) F02D 41/34 (2006.01) F02P 7/067 (2006.01)
Patent
CA 1164074
Abstract of the Disclosure Electronic engine synchronization and timing appar- atus for use in controlling fuel injection and/or spark ignition for an internal combustion engine is disclosed. An engine crankshaft rotates a rotary body having a plurality of radial projections, and a single crankshaft reluctance sensor is utilized to provide pulses in response-to the passage of these projections and thereby provide a signal related to crankshaft position. An engine camshaft rotates a rotary body with radial pro- jections at half of the crankshaft speed, and a pair of camshaft sensors provide signals in response to the passage of the camshaft projections which are indicative of the rotational position of the camshaft. The signals provided by the crankshaft and camshaft sensors are received by circuitry which provides a crankshaft refer- ence signal having transitions of alternate predetermined polarities at specific rotational positions of the crank- shaft and also provides cylinder identification signals which are indicative of the angular rotational position of the camshaft rotary body. These signals are then utilized by conventional electronic fuel injection and/or spark ignition control apparatus to control engine cylinder operations in the proper sequence and at the proper time.
382798
Bolinger Randy L.
Hunninghaus Roy E.
Gowling Lafleur Henderson Llp
Motorola Inc.
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