초록

An internal combustion engine having an integrally connected pressure swing adsorption (PSA) system to provide oxygen-enriched air or oxygen-deficient air, in situ, to the mixing chamber of a spark-ignition or compression-ignition engine.

대표청구항 ▼

An internal combustion engine having an integrally connected pressure swing adsorption (PSA) system to provide oxygen-enriched air or oxygen-deficient air, in situ, to the mixing chamber of a spark-ignition or compression-ignition engine. nd carrying out electricity conduction to the injector by a p

An internal combustion engine having an integrally connected pressure swing adsorption (PSA) system to provide oxygen-enriched air or oxygen-deficient air, in situ, to the mixing chamber of a spark-ignition or compression-ignition engine. nd carrying out electricity conduction to the injector by a plurality of times during a compression stroke and an expansion stroke of the engine, the fuel injection system comprising: (a) correction data storing means for storing a correction data formed by calculating a relationship among a combustion chamber pressure, the engine operating condition and an injection mode of a preceding injection influencing on an actual injection start timing of a succeeding injection carried out successively to the preceding injection carried out precedingly in carrying out the multi-injection previously by an experiment;(b) operating condition detecting means for detecting the engine operating condition;(c) injection mode detecting means for detecting or calculating the injection mode of the preceding injection; and(d) electricity conduction time period correcting means for correcting the electricity conduction time period of the injector drive signal for the succeeding injection based on the correction data stored by the correction data storing means, the engine operating condition detected by the operating condition detecting means and the injection mode of the preceding injection.2. The fuel injection system for an internal combustion engine according to claim 1, whereinthe operating condition detecting means is at least one of engine load detecting means for detecting an engine load, revolution speed detecting means for detecting an engine revolution speed, injection pressure detecting means for detecting the fuel pressure and injection amount detecting means for detecting or calculating the command injection amount,the injection mode detecting means is at least one of preceding injection amount detecting means for detecting or calculating an injection amount of the preceding injection, preceding injection time period detecting means for detecting or calculating an injection time period of the preceding injection, interval detecting means for detecting or calculating a noninjection interval between the preceding injection and the succeeding injection, and succeeding injection timing detecting means for detecting or calculating an injection start timing of the succeeding injection, andthe correction data storing means stores the correction data formed by calculating a relationship among any one or more of the combustion chamber pressure, the engine load or the engine revolution speed or the fuel pressure or the command injection amount the actual injection start timing of the succeeding injection and any one of or more of the injection amount of the preceding injection or the injection time period of the preceding injection or the noninjection interval between the preceding injection and the succeeding injection or the injection start timing of the succeeding injection previously by an experiment.3. The fuel injection system for an internal combustion engine according to claim 1, whereinthe electricity time period correcting means sets the electricity conduction time period of the drive signal of the injector for the succeeding injection to be shorter in accordance with a degree by which the combustion chamber pressure influencing on the actual injection start timing of the succeeding injection is increased than a standard combustion chamber pressure in a case of not being influenced by the preceding injection.4. The fuel injection system for an internal combustion engine according to claim 1, whereinthe injector comprises a nozzle needle for opening and closing an injection hole for injecting the fuel into the cylinder of the engine, a pressure control chamber for controlling to operate the nozzle needle, needle driving means for driving the nozzle needle in an opening direction by overflowing the fuel at a high pressure supplied to the pressure control chamber to a lower pressure side o