Ignition timing control system for internal combustion engine

Patent · Tue Mar 29 04:00:00 EST 1983

OSTI ID:6314223

Iwata, T; Komurasaki, S; Ookawa, K

An acceleration sensor senses mechanical noise components and a knock signal originating from an internal combination engine. The knock signal is separated from the attenuated noise components and compared with a dc voltage due to the latter to form pulses. After having been integrated the pulses are applied to a phase shifter through a phase shift disabling circuit resulting in retardation of an ignition time in the normal mode of operation of the engine. When the engine is operated in the low speed mode or started, the phase shift disabling circuit applies a null input to the phase shifter in place of the integrated pulses, to ignite the engine at a reference ignition time.

• Assignee: Mitsubishi Denki K K (Japan)
• Patent Number(s): US 4377999
• OSTI ID: 6314223
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ACCELERATION
CONTROL
CONTROL SYSTEMS
ENGINES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
OPERATION
PHASE SHIFT