A maximum injection amount of a cylinder injection fuel injection valve (8) can cover a region up to a line L2, with respect to a boundary between a stoichiometric air-fuel ratio region A1 and an output air-fuel ratio region A2. The engine is driven by the...

A period of time from a point in time at which pilot injection is executed until an equivalence ratio in fuel spray, after exceeding a combustible equivalence ratio, falls below the combustible equivalence ratio is calculated as a physical ignition delay p...

The present invention relates to an exhaust performance diagnosis/control device of an engine, and relates specifically to a control device that diagnoses exhaust deterioration at the time of engine start or reduces exhaust gas at the time of start. HC dis...

An ECU calculates the difference between the fuel pressure in a high-pressure distribution pipe and a target pressure when fuel is injected only from an air-intake passage injector. The ECU determines the bulk modulus of fuel that is associated with the co...

An internal combustion engine includes an in-cylinder injection valve and an intake port injection valve. The engine is operated in a combustion mode that is selected from at least stratified lean combustion and homogeneous combustion. An ECU selects the c...

In a fuel injection control apparatus of an internal combustion engine for controlling a fuel supply quantities by making use of a fuel behavior model obtained by modeling the dynamic behavior of fuel flowing from injector 27 into combustion chamber 14 of ...

The method involves detecting the revolution rate of the engine; checking whether it lies within a suitable range for starting; checking whether a change in revolution rate is caused by activating an electric starter and enabling fuel injection if these co...