Ignition timing control system for internal combustion engines
An ignition timing control system for an internal combustion engine having a crankshaft, at least one cylinder, and a starter is described. The system comprises: crank angle detecting means for producing a first pulse signal indicative of a reference crank angle position of the crankshaft and a second pulse signal indicative of a crank angle position that changes constantly with rotation of the crankshaft; ideal crank angle detecting means receiving the first and second pulse signals from the crank angle detecting means for producing an output signal indicative of an ideal crank angle position at which pressure internal of the cylinder of the engine attains a peak value; pressure sensing means for sensing the peak value of pressure internal of the cylinder which exceeds a predetermined value and for producing an output signal indicative of the sensed peak value of pressure; phase difference detecting means receiving the output signals from the ideal crank angle detecting means and from the pressure sensing means for detecting a phase difference between the output signals and for producing an output signal indicative of the detected phase difference; first ignition timing control means receiving the output signal from the phase difference detecting means for producing an output signal indicative of optimum ignition timing which is in accordance with the detected phase difference; and second ignition timing control means receiving the first and second pulse signals from the crank angle detecting means and an input signal from the starter of the engine for controlling ignition timing to a fixed value only for a period of time during which the input signal indicates actuation of the starter.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4694799
- OSTI ID:
- 5908635
- Country of Publication:
- United States
- Language:
- English
Similar Records
Crank angle detecting system for engines
Ignition timing control apparatus for an internal combustion engine
Related Subjects
330100* -- Internal Combustion Engines
AUTOMATION
COMBUSTION CONTROL
CONTROL
CONTROL SYSTEMS
DESIGN
ENGINES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
METERING
MOTION
OPERATION
OPTIMIZATION
PULSE TECHNIQUES
ROTATION
SHAFTS
SIGNALS
TIMING PROPERTIES