CONTROL DEVICE OF CYLINDER DIRECT INJECTION INTERNAL COMBUSTION ENGINE
PROBLEM TO BE SOLVED: To restrain the deterioration in exhaust performance caused by interference between injection fuel and intake valves, while restraining an output shortage of an internal combustion engine in a cylinder direct injection internal combustion engine. SOLUTION: This control device i...
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| creator | OTA TOKUJI |
| description | PROBLEM TO BE SOLVED: To restrain the deterioration in exhaust performance caused by interference between injection fuel and intake valves, while restraining an output shortage of an internal combustion engine in a cylinder direct injection internal combustion engine. SOLUTION: This control device includes a fuel injection valve for directly injecting the fuel into a cylinder, the two intake valves and a variable valve train capable of changing a lift characteristic of the intake valves. When a request load of the internal combustion engine becomes a higher load than a predetermined reference in cold time of the internal combustion engine, a low lift characteristic capable of securing the suction air volume of not lacking in the request load, is calculated when setting only one intake valve to the low lift characteristic, and the timing in the latter period of a valve opening period of the intake valve set to the low lift characteristic, that is, timing when a lift quantity of the intake valve becomes a lift quantity of non-interfering between the intake valve and the injection fuel, is calculated, and the variable valve train is controlled for setting the one intake valve to the low lift characteristic, and the fuel injection valve is controlled so as to start fuel injection on and after the calculated timing. COPYRIGHT: (C)2010,JPO&INPIT |
| format | Patent |
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SOLUTION: This control device includes a fuel injection valve for directly injecting the fuel into a cylinder, the two intake valves and a variable valve train capable of changing a lift characteristic of the intake valves. When a request load of the internal combustion engine becomes a higher load than a predetermined reference in cold time of the internal combustion engine, a low lift characteristic capable of securing the suction air volume of not lacking in the request load, is calculated when setting only one intake valve to the low lift characteristic, and the timing in the latter period of a valve opening period of the intake valve set to the low lift characteristic, that is, timing when a lift quantity of the intake valve becomes a lift quantity of non-interfering between the intake valve and the injection fuel, is calculated, and the variable valve train is controlled for setting the one intake valve to the low lift characteristic, and the fuel injection valve is controlled so as to start fuel injection on and after the calculated timing. 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SOLUTION: This control device includes a fuel injection valve for directly injecting the fuel into a cylinder, the two intake valves and a variable valve train capable of changing a lift characteristic of the intake valves. When a request load of the internal combustion engine becomes a higher load than a predetermined reference in cold time of the internal combustion engine, a low lift characteristic capable of securing the suction air volume of not lacking in the request load, is calculated when setting only one intake valve to the low lift characteristic, and the timing in the latter period of a valve opening period of the intake valve set to the low lift characteristic, that is, timing when a lift quantity of the intake valve becomes a lift quantity of non-interfering between the intake valve and the injection fuel, is calculated, and the variable valve train is controlled for setting the one intake valve to the low lift characteristic, and the fuel injection valve is controlled so as to start fuel injection on and after the calculated timing. 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SOLUTION: This control device includes a fuel injection valve for directly injecting the fuel into a cylinder, the two intake valves and a variable valve train capable of changing a lift characteristic of the intake valves. When a request load of the internal combustion engine becomes a higher load than a predetermined reference in cold time of the internal combustion engine, a low lift characteristic capable of securing the suction air volume of not lacking in the request load, is calculated when setting only one intake valve to the low lift characteristic, and the timing in the latter period of a valve opening period of the intake valve set to the low lift characteristic, that is, timing when a lift quantity of the intake valve becomes a lift quantity of non-interfering between the intake valve and the injection fuel, is calculated, and the variable valve train is controlled for setting the one intake valve to the low lift characteristic, and the fuel injection valve is controlled so as to start fuel injection on and after the calculated timing. COPYRIGHT: (C)2010,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS |
| title | CONTROL DEVICE OF CYLINDER DIRECT INJECTION INTERNAL COMBUSTION ENGINE |
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