Precision distributorless ignition control system for internal combustion engines
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United States of America Patent
Stats
-
Mar 17, 1987
Issued Date -
N/A
app pub date -
Aug 12, 1985
filing date -
Aug 17, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic ignition system is disclosed for controlling as a function of a selected engine parameter the ignition instants of an internal combustion engine having at least one cylinder, a piston, a spark plug for effecting combustion in the cylinder and a rotatable crankshaft coupled to the piston to be rotatably driven as combustions within said cylinder occur at said ignition instants. The crankshaft has a reference position defining a positional relationship of the crankshaft to the cylinder. The ignition system includes an optical encoder directly coupled to the crankshaft for generating ignition signals upon the termination of a variable crankshaft arc beginning at a point fixed with respect to the reference position. The length of the crankshaft arc is set as a function of one or more selected engine parameters.
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