Patent application number | Description | Published |
20080210196 | Direct-Injection Internal Combustion Engine and Method of Controlling the Same - In a direct-injection internal combustion engine, a variable intake valve, of which valve timing can be varied, is used as an air intake valve through which an air intake path and a combustion chamber communicate with each other. The direct-injection internal combustion engine includes: a variable-intake-valve control section that controls the valve timing of the variable intake valve; and an intake-air temperature acquisition section that acquires a temperature of the intake air introduced into the combustion chamber. When the fuel is injected into the combustion chamber via a fuel injection valve during a compression stroke or an expansion stroke, if the acquired intake-air temperature is low, the closing timing of the variable intake valve is advanced, so that the actual compression ratio is increased. | 09-04-2008 |
20090071440 | DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE AND FUEL INJECTION CONTROL METHOD FOR SAME ENGINE - A direct injection spark ignition internal combustion engine includes a fuel injection controller preventing and/or suppressing engine knocking by retarding a fuel injection timing near an intake stroke bottom dead center. The fuel injection controller retards the fuel injection timing beyond a predetermined time by injecting a required amount of fuel through two or more split injections, and the time at which to end the last split injection is set to a time later than the predetermined time. | 03-19-2009 |
20090126682 | CONTROL APPARATUS AND METHOD FOR DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE - In a direct injection spark ignition internal combustion engine in which, after the engine has been started at a low temperature, the tumble flow is intensified in each cylinder by the fuel injected at a time near the intake stroke bottom dead center so that homogenous combustion is properly performed and additional fuel is then injected after the ignition time in order to increase the exhaust gas temperature, the thrust force of fuel injected from a fuel injection valve is adjusted in at least two levels such that the thrust force of the additional fuel becomes weaker than the thrust force of the fuel injected at the time near the intake stroke bottom dead center. | 05-21-2009 |
20090133668 | DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE AND FUEL INJECTION METHOD FOR SAME - A direct injection spark ignition internal combustion engine includes a fuel injector for directly injecting fuel into a cylinder and intensifies a tumble flow using the fuel injected into the cylinder bore at a time near an intake stroke bottom dead center during homogenous combustion. The thrust force of the fuel injected from the fuel injector is set to intensify the tumble flow based on at least one of the state of the combustion chamber, the temperature of the injected fuel, and the orientation of the injection hole. | 05-28-2009 |
20090194069 | CONTROL APPARATUS AND CONTROL METHOD OF IN-CYLINDER INJECTION TYPE SPARK IGNITION INTERNAL COMBUSTION ENGINE - An ECU controls an internal combustion engine which generates a tumble flow inside a cylinder and strengthens the tumble flow by fuel injected near bottom dead center of an intake stroke. The ECU includes an injection timing changing device that changes the injection timing of fuel based on the amount of air drawn into a cylinder of the internal combustion engine. | 08-06-2009 |
20090271092 | DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING SAME - A direct injection spark ignition internal combustion engine includes a fuel injection valve and fuel injection control device that controls fuel injection such that a fuel is injected from an upper area of an engine cylinder toward a top face of a piston through the fuel injection valve. The fuel injection control device switches a thrust force of the fuel injected from the fuel injection valve between at least two levels such that the thrust force of the injected fuel becomes weaker when the position of the piston is high than when the position of the piston is low. | 10-29-2009 |
20100288236 | DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING SAME - In a direct injection spark ignition internal combustion engine that performs an Atkinson cycle operation in which the time to close intake valves is retarded, the tumble flow in the engine cylinder is intensified by fuel injected from a fuel injection valve during a time period from an intake stroke bottom dead center to closing of the intake valves. | 11-18-2010 |
20110232605 | FUEL INJECTION CONTROL SYSTEM AND FUEL INJECTION CONTROL METHOD FOR SPARK-IGNITION INTERNAL COMBUSTION ENGINE - In a fuel injection control system for an ignition-spark internal combustion engine, when a piston in a cylinder is stopped at a point after an opening timing of an intake valve, and before substantially 90 degrees after a top dead center of an intake stroke at a time of start of the internal combustion engine, fuel is injected for the cylinder a plurality of times during a period from the opening timing of the intake valve to substantially 90 degrees after the top dead center of the intake stroke. | 09-29-2011 |