Patent ID: 7505845
Filing Date: 2009-03-17
Classification: F01N,F02D,F02M,Y02A,Y02T

Abstract:
1. An engine control apparatus for an internal combustion engine comprising: a controller to retard an ignition timing for the engine, from an engine starting mode timing for starting the engine to a catalyst warm-up mode timing for warming up an exhaust purifying catalyst for the engine, at an idle attainment moment at which an engine idling condition is reached, to regulate an intake air quantity for the engine at a prior moment prior to the idle attainment moment so that intake air is supplied to the engine at the idle attainment moment in an amount to sustain the idling condition, to increase a fuel injection quantity by an increase quantity during a period from the prior moment before the idle attainment moment until an intake settlement moment which is a moment after the idle attainment moment, and to set the increase quantity of the fuel injection quantity in accordance with a parameter representing a condition of the intake air or fuel supplied to the engine.