System for determining time duration of angular rotation

Patent · Tue Feb 10 04:00:00 EST 1987

OSTI ID:6734310

Dackow, P N

A system is described for determining tim to produce an ignition spark in an internal combustion spark-fired engine having a rotating part comprising in combination: means producing signals marking the beginning and the end of a fixed number M of degrees of rotation of the engine part; means producing clock pulses at a fixed rate; means responsive to the clock pulses and to the beginning and end signals for generating a number related to the number of clock pulses produced during a value X in degrees of engine part rotation, where X is unequal to M; means responsive to the generated number for producing a value related to the number of degrees N of engine part rotation after the end, at which it is desired to produce the ignition spark, and means responsive to the generated number, to the clock pulses and to the value for determining when the engine part has rotated N degrees past the end.

• Assignee: RCA Corp., Princeton, NJ
• Patent Number(s): US 4642772
• OSTI ID: 6734310
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
ANGULAR MOMENTUM
CALCULATION METHODS
ELECTRIC DISCHARGES
ELECTRIC SPARKS
ENGINES
HEAT ENGINES
IGNITION
INTERNAL COMBUSTION ENGINES
MOTION
PULSES
ROTATION
SIGNALS
SPARK IGNITION ENGINES
TIME MEASUREMENT
TIMING PROPERTIES