| 摘要 |
When a catalyst warm-up request for promoting warm-up of a catalyst is issued and no negative-pressure increase request for increasing a negative pressure downstream of a throttle valve is issued, a control system of an internal combustion engine controls the ignition timing to the timing (ϑ0+Δϑ1) obtained by correcting the normal ignition timing (ϑ0) to be retarded by a correction amount &Delta,−ϑ1, and controls the degree of opening of the throttle valve to a throttle opening (TAO+ΔTA1) that is larger than the normal throttle opening TAO by a correction amount ΔTA1. When the negative intake pressure must be increased for brake boosting when ignition is on the retard side, the throttle spending is reduced and the ignition is advanced gradually after some delay to avoid torque shock. |
