Ignition timing control device for internal combustion engines

Patent · Tue Apr 15 04:00:00 EST 1986

OSTI ID:5745706

Iwata, T

An ignition timing control device is described for an internal combustion engine which consists of: (a) a knocking sensor for detecting knocking of the engine; (b) a reference voltage generator for generating a reference voltage dependent on the level of an output signal from the knocking sensor; (c) a comparator for comparing the output signal from the knocking sensor with the reference voltage to generate a train of pulses in a number dependent on an amplitude of knocking; (d) an integrator for integrating an output signal from the comparator; (e) ignition timing controller means responsive to the level of the output voltage from the integrator for controlling the ignition timing of the internal combustion engine, the ignition timing controller means retarding the ignition timing at a fixed rate when knocking is detected, and advancing the ignition timing at a speed that is variable with an elapsed time during which no knocking is detected; and (f) control means triggerable by the output of the comparator for increasing a variation speed in the output signal level of the integrator during no knocking as time elapses, whereby the speed at which ignition timing of the internal combustion engine is advanced, is increased as time elapses.

• Assignee: Mitsubushi Dneki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4582034
• OSTI ID: 5745706
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AMPLITUDES
CONTROL
CONTROL SYSTEMS
ELECTRIC GENERATORS
ELECTRIC POTENTIAL
ENGINES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
PULSES
SIGNALS
TIME MEASUREMENT
VELOCITY