Ignition timing control system for internal combustion engine

Patent · Tue Apr 03 04:00:00 EST 1984

OSTI ID:6511791

Iwata, T

An acceleration sensor senses mechanical noise components and knock signals originating from an internal combustion engine. An output from a filter used for attenuating the noise components is applied to both an analog gate which is closed for some time period after each ignition time by a gate timing controller and to a noise level detector. An output from the analog gate is compared with a DC voltage due to the attenuated noise components delivered by the detector to form pulses. After having been integrated, the pulses shift a phase of an ignition signal to cause the ignition timing to be retarded.

• Assignee: Mitsubishi Denki Kabushiki Kaisha (Japan)
• Patent Number(s): US 4440129
• OSTI ID: 6511791
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330603 -- Vehicle Design Factors-- Engine System
ACOUSTIC DETECTION
ACOUSTIC MEASUREMENTS
BACKGROUND NOISE
CHARGED PARTICLE DETECTION
CONTROL
CURRENTS
DETECTION
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRONIC CIRCUITS
ENGINES
HEAT ENGINES
IGNITION
INTERNAL COMBUSTION ENGINES
NOISE
PROCESS CONTROL
RADIATION DETECTION
RESOLUTION
SIGNAL-TO-NOISE RATIO
TIME RESOLUTION
TIMING CIRCUITS
TIMING PROPERTIES