Ignition timing control apparatus for an internal combustion engine

Patent · Tue Oct 18 04:00:00 EDT 1988

OSTI ID:6529371

Kanno, Y; Nakamoto, K; Sumitani, J

This patent describes an ignition timing control apparatus for an internal combustion engine comprising: air flow sensing means for sensing air flow rate into an air intake pipe for an engine and producing an electrical output signal in the form of pulses having a frequency which is proportional to the air flow rate; crank angle sensing means for producing an electrical output pulse each time a crankshaft of the engine is at a prescribed crank angle; load sensing means for sensing load on the engine based on the output signal produced by the air flow sensing means during a period between prescribed angles represented by output pulses from the crank angle sensing means and producing load data corresponding to the sensed engine load and represented by an output signal; and control means for calculating ignition timing of the engine based on rotational speed of the engine and the load data from the load sensing means and for controlling current to an ignition coil of the engine in accordance with the calculated ignition timing.

• Assignee: Mitsubishi Denki Kabushiki Kaisha
• Patent Number(s): US 4777919
• OSTI ID: 6529371
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
ANGULAR VELOCITY
CONTROL SYSTEMS
ENGINES
FLOW RATE
FLOWMETERS
FLUID FLOW
GAS FLOW
HEAT ENGINES
IGNITION
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
METERING
METERS
TIMING PROPERTIES
VELOCITY