Ignition timing control device for internal-combustion engines

Patent · Tue Dec 06 04:00:00 EST 1988

OSTI ID:6423093

Komurasaki, S

This patent describes an ignition timing control device for internal-combustion engines comprising a knocking sensor which senses knocking information which is abnormal sound or abnormal vibration resulting from abnormal combustion in each cylinder of a internal-combustion engine, a knocking discriminator which discriminates the knocking information; an operation control device which calculates the amount of occurrence of knocking on the basis of an output of the discriminator, calculates an instruction output of the discriminator, calculates an instruction output corresponding to ignition operation, and controls the phase of an ignition signal to a desired angle on the basis of a result of these calculations; and a switching circuit which closes and opens an ignition coil in accordance with this phase output; the operation control device, comprising; an integral operation control means which outputs integral voltage on the basis of the output of the knocking discriminator, resets this integral corresponding to the ignition operation, calculates the amount of occurrence of knocking in each of the cylinders on the basis of this reset integral voltage, and when the amount of occurrence of knocking in the whole body of the engine has reached a specific value, sends out the phase shift output of the ignition signal to the switching circuit.

• Assignee: Mitsubishi Denki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4788957
• OSTI ID: 6423093
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
ENGINES
EQUIPMENT
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
MEASURING INSTRUMENTS
METERING
METERS
OPERATION
TIMING PROPERTIES