Ignition control system for internal combustion engines

Patent · Tue Jun 03 04:00:00 EDT 1986

OSTI ID:5703557

Nakano, K; Takakuwa, E; Utsumi, H

An ignition control system is described for use in an internal combustion engine for controlling the energization starting timing and ignition timing of an ignition coil of the engine by computing control means. The ignition control system consists of: detecting means for detecting at least one of a failure of the computing control means or in the starting of the engine; charging and discharging means for converting a rotational speed of the engine to a charged voltage and for discharging the converted charged voltage within a predetermined number of degrees from a predetermined crank angle of the engine so as to form a charge and discharge voltage wave; charge and discharge voltage waveform comparison means for comparing relative magnitudes of the charge and discharge voltage wave with a signal indicative of a batter voltage; and back-up signal generating means responsive to a signal from the charge and discharge waveform voltage comparison means to generate a back-up signal, whereby the energization starting timing and ignition timing of the ignition coil are controlled in accordance with the back-up signal in response to at least one of the computing control means failure or the engine starting.

• Assignee: Nippondenso Co., Ltd., Kariya
• Patent Number(s): US 4592324
• OSTI ID: 5703557
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
ELECTRIC POTENTIAL
ELECTRONIC CIRCUITS
ENGINES
FAILURES
HEAT ENGINES
IGNITION SYSTEMS
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
MOTION
ROTATION
SIGNALS
TIMING CIRCUITS
VELOCITY