Ignition system for internal combustion engines
An ignition system for an internal combustion engine is described comprising: an ignition coil for generating a high voltage for ignition upon turning off of a primary current flowing therethrough; a power transistor for turning on and off the primary current flowing through the ignition coil; ignition signal generating means for producing an ignition signal having a predetermined angular width for turning off the power transistor at an ignition timing in synchronism with the rotation of the internal combustion engine; storing means having a storage quantity increased gradually from an initial value in response to each ignition signal through a predetermined angle before a succeeding ignition timing and then decreased gradually; first storage quantity detecting means for detecting a first time point at which the storage quantity of the storing means has been decreased to reach the initial value and producing a first detection output signal for turning on the power transistor at the first time point; and second storage quantity detecting means for detecting a second time point at which the storage quantity of the storing means has been decreased to reach a set value larger than the initial value and producing a second detection output signal for changing a decrease rate of the storage quantity of the storing means at the second time point.
- Assignee:
- NOV; NOV-88-017074; EDB-88-130631
- Patent Number(s):
- US 4741319
- OSTI ID:
- 7033923
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ignition control system for internal combustion engine
Ignition system for internal combustion engines
Related Subjects
330100* -- Internal Combustion Engines
CURRENTS
DESIGN
ELECTRIC COILS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
HEAT ENGINES
IGNITION
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
OPERATION
SEMICONDUCTOR DEVICES
SIGNALS
STORAGE
TIMING PROPERTIES
TRANSISTORS