Ignition system for rotary internal combustion engines

Patent · Tue Nov 18 04:00:00 EST 1975

OSTI ID:7367018

Munden, C D

An electronic ignition system and ignition coil is provided for each the leading and trailing spark plugs of a rotary internal combustion engine. A series of alternating current signals, produced in timed relationship with the engine, are applied simultaneously to the leading spark plug ignition system and a delay circuit. In response to each cycle of the series of alternating current signals, the leading spark plug ignition system establishes and abruptly interrupts the primary winding of the leading spark plug ignition coil and the delay circuit produces both a synchronizing signal having leading and trailing edges corresponding to the negative to positive and positive to negative zero crossover points, respectively, and a trailing spark plug ignition signal delayed in time from the positive to negative zero crossover point. Logic circuitry responsive to the leading edge of the synchronizing signal and the trailing spark plug ignition signal produces a trailing spark plug ignition system dwell signal of a pulse width equal to the time therebetween which is applied to the input circuit of the trailing spark plug electronic ignition system. (auth)

• Assignee: General Motors Corp.
• Patent Number(s): US 3919994
• OSTI ID: 7367018
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330104 -- Internal Combustion Engines-- Rotary
330603* -- Vehicle Design Factors-- Engine System
AUTOMOBILES
DELAY CIRCUITS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
IGNITION
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
LOGIC CIRCUITS
ROTARY ENGINES
TIMING CIRCUITS
VEHICLES