Spark-ignition internal combustion engine

Patent · Tue May 30 04:00:00 EDT 1989

OSTI ID:5836998

Ishigami, K

This patent describes a spark-ignition internal combustion engine comprising: means defining an intake passageway communicated with combustion chamber of the engine, the intake passageway diverging into first and second intake passage portions leading to the combustion chamber; a blocking valve movably disposed in the second intake passage portion to block the second intake passage portion, the blocking valve being openable; a pressure-operated actuator for actuating the blocking valve to move in a first direction to open the blocking valve upon being supplied with a first pressure signal; means for computing spark timing of a spark plug disposed in the combustion chamber, in accordance with engine operating conditions, the spark timing taking a first spark timing characteristic in the high engine load operating range and a second spark timing characteristic in a low engine load operating range, the first spark timing characteristic advanced relative to the second spark timing characteristic; means for correcting the spark timing to retard the first spark timing characteristic during a predetermined time period from initiation of opening operation of the blocking valve; and means for generating an ignition signal to cause the spark plug to spark, in accordance with the spark timing corrected by the spark timing correcting means.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4834047
• OSTI ID: 5836998
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
ACTUATORS
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
OPERATION
SPARK IGNITION ENGINES
TIMING PROPERTIES
VALVES