초록 ▼

A supercharged engine having a supercharger which is operated only when the engine load is greater than a predetermined value. An ignition timing control device is provided for determining a basic ignition timing in accordance with the engine operating condition. The basic ignition timing is retarde

A supercharged engine having a supercharger which is operated only when the engine load is greater than a predetermined value. An ignition timing control device is provided for determining a basic ignition timing in accordance with the engine operating condition. The basic ignition timing is retarded by a predetermined value when a supercharging signal is produced for commencing the supercharging, and is gradually advanced to the basic ignition timing in a predetermined time period.

대표청구항 ▼

A supercharged engine including combustion chamber means, supercharging means for producing a supercharging pressure, means for introducing the supercharging pressure into said combustion chamber means under an engine load greater than a predetermined value, supercharging start signal generating mea

A supercharged engine including combustion chamber means, supercharging means for producing a supercharging pressure, means for introducing the supercharging pressure into said combustion chamber means under an engine load greater than a predetermined value, supercharging start signal generating means for generating a supercharging start signal when the engine load increases beyond the predetermined value, and ignition timing control means responsive to said supercharging start signal to retard ignition timing, wherein said ignition timing control means includes means for retarding the ignition timing for a predetermined time period from an instant when the supercharging start signal is produced.