Patent application number | Description | Published |
20090037085 | Starting system and method of internal combustion engine - In a starting system of an internal combustion engine including a fuel injection valve that directly injects fuel into a corresponding cylinder and a spark plug that ignites an air-fuel mixture in the cylinder, injection of the fuel from the fuel injection valve and ignition performed by the spark plug are stopped when engine stop conditions are met. If the engine restart conditions are met during rotation of the engine after the engine stop conditions are met, the fuel is injected from the fuel injection valve into an expansion-stroke cylinder that is in the expansion stroke at the time when the engine restart conditions are met, and the mixture formed in the expansion-stroke cylinder is ignited by the spark plug. | 02-05-2009 |
20090132155 | Starting system and method of internal combustion engine - In a starting system of an internal combustion engine, an injector for injecting fuel directly into a combustion chamber and an ignition plug for igniting an air/fuel mixture in the combustion chamber are provided, and a throttle device is provided in an intake pipe. During stopping of the engine, the starting system operates the throttle device to open a throttle valve to a predetermined throttle opening at a throttle opening speed that is set based on the intake pressure. Upon a start of the engine, the starting system actuates the injector to inject the fuel into a cylinder that is in the expansion stroke, and actuates the ignition plug to ignite the mixture in the combustion chamber. | 05-21-2009 |
20090271095 | Starting System and Method of Internal Combustion Engine - Upon a start of the internal combustion engine, a starting system causes an injector to inject fuel into and causes an ignition plug to ignite a mixture in a cylinder stopped in the expansion stroke, and causes the injector to inject fuel into and causes the ignition plug to ignite a mixture at or in the vicinity of the compression TDC in a compression-stroke cylinder that follows the expansion-stroke cylinder. When the engine coolant temperature is equal to or higher than a predetermined temperature, the starting system retards the fuel injection timing for the compression-stroke cylinder. | 10-29-2009 |
20090320796 | Internal Combustion Engine - An internal combustion engine includes a low-pressure fuel feed system ( | 12-31-2009 |
20110265463 | AMMONIA BURNING INTERNAL COMBUSTION ENGINE - An internal combustion engine in which ammonia which is fed into a combustion chamber is ignited by an ignition device which is arranged in the combustion chamber. As this ignition device, at least one plasma jet ignition plug which emits a plasma jet or a plurality of spark plugs which generate sparks are used. | 11-03-2011 |
20110265464 | AMMONIA BURNING INTERNAL COMBUSTION ENGINE - Inside an engine compartment of a vehicle, an ammonia concentration sensor is arranged above a liquid ammonia injector which is attached to an internal combustion engine body and to the rear in a direction of progression of the vehicle. An ammonia concentration which is detected by the ammonia concentration sensor is used as the basis to judge if ammonia is leaked. | 11-03-2011 |
20120167840 | HYDROGEN GENERATOR AND INTERNAL COMBUSTION ENGINE PROVIDED WITH HYDROGEN GENERATOR - A hydrogen generator provided with a cracker which cracks a compound containing hydrogen atoms and nitrogen atoms to generate hydrogen, a compound feeder which feeds the compound to the cracker, and an oxygen feeder which feeds oxygen to the cracker. The cracker includes catalyst particles which promote the cracking of the compound and catalyst particles which promote the oxidation of the compound. The cracker is fed with the compound and oxygen, causes the compound to oxidize to generate heat of oxidation, and uses the generated heat of oxidation to crack the compound. | 07-05-2012 |
20130118458 | FUEL FEED SYSTEM - A fuel feed system which causes liquid fuel to evaporate so as to feed gaseous fuel, provided with an evaporator which includes a heater which heats the liquid fuel to vaporize it and an electric heater which adjusts the temperature of the heater. The heater has a heat conduction surface which supplies heat to the liquid fuel. A difference between the temperature of the heat conduction surface of the heater and the boiling point of the fuel at the evaporator is used as the basis to change the temperature of the heater and adjust the heat flux at the heat conduction surface. | 05-16-2013 |
20130138327 | FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - An object of the invention is to provide a technology that enables to make the feed pressure as low as possible without inviting a misfire or a deviation of the air-fuel ratio, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump. According to the invention, to achieve the object, in a fuel injection control system for an internal combustion engine in which fuel discharged from a low pressure fuel pump is supplied to a fuel injection valve with its pressure boosted by a high pressure fuel pump, while a lowering process of lowering feed pressure or the discharge pressure of a the low pressure fuel pump, the lowering process is suspended and restarted with reference to the tendency of change in an integral term used in a proportional-integral control of the duty cycle of the high pressure fuel pump. | 05-30-2013 |
20130298872 | FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - An object of the invention is to provide a technology enabling to determine the saturation vapor pressure of used fuel in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump. In the invention, to achieve the object, in the fuel injection control system for an internal combustion engine that controls the duty cycle of the high pressure fuel pump by proportional-integral control based on the difference between the discharge pressure of the high pressure fuel pump and a target pressure, generation of vapor is detected based on a tendency of change in an integral term used in the proportional integral control, and the saturation vapor pressure of used fuel is calculated from the fuel temperature and the engine speed at that time. | 11-14-2013 |
20140053812 | FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - An object of the invention is to detect, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump, a failure in the fuel injection system including the high pressure fuel pump with high accuracy. To achieve the object, in the fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump according to the invention, when a discharge failure in the high pressure fuel pump is detected, the discharge pressure of the low pressure fuel pump is increased. Then, it is determined whether a discharge failure in the high pressure fuel pump occurs or not. If occurs, it is concluded that the fuel injection system including the high pressure fuel pump is in failure. | 02-27-2014 |
20140116394 | FUEL SUPPLY SYSTEM AND FUEL SUPPLY METHOD FOR INTERNAL COMBUSTION ENGINE - A fuel supply system for an internal combustion engine includes a heat exchanger that has a heat exchanging wall between a liquefied fuel passage and an engine coolant passage. Heated and vaporized fuel flowing out from the liquefied fuel passage of the heat exchanger is supplied to the internal combustion engine. A flow rate of liquefied fuel supplied to the liquefied fuel passage of the heat exchanger is set. A flow rate of engine coolant supplied to the engine coolant passage of the heat exchanger is determined on the basis of a temperature of the engine coolant supplied to the engine coolant passage of the heat exchanger such that nucleate boiling or transition boiling of the liquefied fuel in the set flow rate occurs near a boundary between nucleate boiling and transition boiling in the liquefied fuel passage. | 05-01-2014 |
20140123955 | FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - A fuel injection control system for an internal combustion engine in which a driving signal for a high pressure fuel pump is calculated by using proportional plus integral control based on a difference between a delivery pressure of the high pressure fuel pump and a target pressure thereof. A delivery pressure of a low pressure fuel pump is caused to decrease when an amount of change per unit time of an integral term shows a decreasing tendency or zero, whereas the delivery pressure of the low pressure fuel pump is caused to increase when the amount of change per unit time of the integral term shows an increasing tendency. In cases where an increase in the integral term resulting from a change in the target delivery pressure of the high pressure fuel pump has occurred, the increase in the delivery pressure of the low pressure fuel pump is prohibited. | 05-08-2014 |
20140163840 | DEVICE FOR CONTROLLING VEHICLE ENGINE STARTING - A vehicle engine start control device in a vehicle includes a direct injection engine directly injecting fuel into a cylinder as a drive power source for running. The vehicle engine start control device is configured to start rotation of the direct injection engine when the direct injection engine is started from a stop state of the direct injection engine in which a first cylinder of a plurality of cylinders is in an expansion stroke while a second cylinder next to the first cylinder in an ignition order is located at a top dead center. Further, the device directly injects fuel into the second cylinder and ignites the fuel while a piston of the second cylinder is moving away from the top dead center toward a bottom dead center in a first expansion stroke in the second cylinder after the start of the rotation. | 06-12-2014 |
20140163843 | FUEL SUPPLY APPARATUS FOR INTERNAL COMBUSTION ENGINE - A drive circuit ( | 06-12-2014 |
20140172219 | ENGINE STOP CONTROL DEVICE FOR HYBRID VEHICLE - An engine stop control device of a hybrid vehicle has a direct injection engine directly injecting fuel into a cylinder, a clutch connecting/disconnecting the direct injection engine to/from a power transmission path, and a rotating machine at least acting as an electric motor. The hybrid vehicle uses the direct injection engine and the rotating machine as a drive power source for running, and the once interrupted clutch is temporarily connected at the time of the engine stop or immediately after the engine stop when the clutch is interrupted to stop the direct injection engine during running. | 06-19-2014 |
20140180522 | HYBRID VEHICLE CONTROL DEVICE - A control device of a hybrid vehicle has an engine and an electric motor used as a drive source and an electric storage device supplying electric energy to the electric motor, the control device of a hybrid vehicle selectively performing electric motor running using the electric motor as the drive source and engine running using the engine as the drive source, the control device being configured to raise a rotation speed of the engine by directly injecting fuel into a cylinder of the engine and causing an explosion when the engine is started, and after raising the rotation speed of the engine, the electric motor assisting the raising of the rotation speed of the engine, the control device including a clutch mechanism disposed between the engine and the electric motor, the clutch mechanism separating the engine and the electric motor from each other during the electric motor running, after raising the rotation speed of the engine, the electric motor assisting the raising of the rotation speed of the engine via the clutch mechanism to provide a start assist, the control device being configured to synchronize a rotation speed of the clutch mechanism after the start of the engine is completed, and after the synchronization is completed, the clutch mechanism being engaged. | 06-26-2014 |
20140209059 | ENGINE START CONTROL APPARATUS FOR HYBRID VEHICLE - In a hybrid vehicle, when using an ignition start to start a direct injection engine while any one of the cylinders has stopped near top dead center, engine revolutions are raised by producing a first explosion in a first cylinder, which is situated before a second cylinder in an ignition sequence and is in an expansion stroke and in which an exhaust value is not open, by directly injecting fuel into the first cylinder and igniting the fuel. Furthermore, assistance in increasing the engine revolutions is started by transmitting assist torque output from a motor-generator to the direct injection engine via a clutch, in a peak section immediately after the start of increase in the engine revolutions. The stopped direct injection engine can be started using a sufficient required assist torque, namely, electrical energy, whereby the electrical energy for engine starting that is always reserved in a battery (accumulator apparatus) is reduced and therefore a travel range is increased and vehicle fuel consumption is improved appropriately. | 07-31-2014 |
20140230791 | FUEL INJECTION CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - In a fuel injection control system for an internal combustion engine provided with a low pressure fuel pump and a high pressure fuel pump, proportional plus integral control of a high pressure fuel pump is carried out to make a pressure of fuel come close to a target value between the high pressure fuel pump and fuel injection valves. In cases where the high pressure fuel pump is in operation, a feed pressure, which is a pressure of fuel between a low pressure fuel pump and the high pressure fuel pump, is caused to go down when an integral term in the proportional plus integral control does not change or is decreasing, and the feed pressure is caused to go up when the integral term is increasing. In cases where the high pressure fuel pump is in a stopped state, the feed pressure is made higher than before the high pressure fuel pump is stopped. | 08-21-2014 |
20140277890 | CONTROL DEVICE FOR HYBRID VEHICLE - Provided is a control device for a hybrid vehicle capable of attaining an assist torque generated by a clutch mechanism at an appropriate timing, upon starting the engine. Since an electronic control device outputs an engagement command for engaging a clutch (clutch mechanism) at a time preceding an (ignition) start command time for igniting an engine by a preceding-sending time, the clutch becomes engaged when the engine speed starts to increase, and the assist torque generated by the clutch mechanism can thus be obtained at an appropriate timing. Because the engine speed that was once increased upon starting the engine is not decreased, the energy that was consumed for starting the engine can be effectively used. | 09-18-2014 |
20140303823 | HYBRID VEHICLE CONTROL APPARATUS - The hybrid vehicle has a motor generator disposed in a power transmission path and performing as an electric motor and an electric generator, a direct injection engine configured to execute an ignition start in which fuel is injected into any cylinder with a piston stopped in an expansion stroke and ignited for the start, and an engine connecting/disconnecting clutch of friction engagement type directly connecting and interrupting the direct injection engine to/from the motor generator. The control device of the hybrid vehicle has an MG creep mode in which the motor generator is used as an electric motor and rotationally driven at a predetermined first rotation speed to generate a creep torque while the engine connecting/disconnecting clutch is interrupted and the direct injection engine is stopped, and a charging creep mode in which the direct injection engine is operated at a predetermined second rotation speed higher than the first rotation speed to generate the creep torque with the motor generator used as an electric generator to charge a battery while the engine connecting/disconnecting clutch is connected, the control device performs the ignition start of the direct injection engine during the MG creep mode and provides connection control of the engine connecting/disconnecting clutch after a rotation speed of the direct injection engine exceeds a rotation speed of the motor generator to raise the rotation speed of the motor generator and directly connect the direct injection engine to the motor generator when a transition is made from the MG creep mode to the charging creep mode. | 10-09-2014 |
20140336904 | VEHICLE CONTROL DEVICE - A vehicle control device includes a direct-injection engine and an electric rotating machine connected to the engine, wherein the vehicle control device stops the engine after opening a throttle while maintaining an engine speed by the electric rotating machine at the time there is a request to stop the engine. The engine speed is preferably maintained by an output torque of the electric rotating machine at the time fuel supply to the engine is stopped and the throttle is opened. At the time the throttle is opened while fuel is continuously supplied to the engine, it is preferable to maintain the engine speed by allowing the electric rotating machine to generate electric power. | 11-13-2014 |
20150059688 | CONTROL APPARATUS AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - A control apparatus for an internal combustion engine that can be a four-cycle engine including cylinders into which fuel is directly injected, the control apparatus includes an electronic control unit. The electronic control unit is configured to execute a fuel injection and an ignition for the cylinder in an expansion stroke on a condition that a stop of the piston in any one of the cylinders at vicinity of a top dead center after a compression stroke is predicted when the electronic control unit is configured to stop the fuel injection and the ignition for the internal combustion engine upon fulfillment of a predetermined stop condition. | 03-05-2015 |
20150122219 | INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE - A control device of a cylinder direct injection type internal combustion engine controls a fuel injection device and an ignition device, executes injection of the fuel and ignition over multiple times, and executes a control of varying an interval between a timing of the injection of the fuel and a timing of the ignition, at the time of an ignition start in which the fuel is injected into a combustion chamber in an expansion stroke with rotation of an output shaft is stopped state and the fuel is ignited to start the rotation of the output shaft. The control device varies the interval between the timing of the injection of the fuel and the timing of the ignition by adjusting a correlation of a pitch of the injection of the fuel over multiple times and a pitch of the ignition over multiple times. | 05-07-2015 |
20150239468 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control device of a vehicle drive device includes a direct injection engine, an electric motor, and a clutch selectively coupling the direct injection engine to a power transmission path from the electric motor to drive wheels, the control device slips the clutch and starts the direct injection engine by an ignition start with fuel injected into a cylinder of the direct injection engine and ignited from a start of rotation of the direct injection engine if the direct injection engine is started during a running mode using only the electric motor as a drive source, the control device weakens an engagement force of the clutch if a shaft torque of the direct injection engine goes through a first negative torque extreme value after initiation of a start of the direct injection engine and becomes zero from a negative torque as compared to before becoming the zero. | 08-27-2015 |
20150275797 | CONTROLLER FOR STARTING VEHICULAR DIRECT-INJECTION ENGINE - A start control device of a vehicular direct injection engine provided in a vehicle is configured to execute an ignition start to raise rotation of the direct injection engine at a start of the direct injection engine by fuel injection and multiple sparking performed for a predetermined cylinder in an expansion stroke out of multiple cylinders of the direct injection engine, the start control device of a vehicular direct injection engine reduces the number of times of sparking for the predetermined cylinder at the time of an ignition start of the direct injection engine as compared to an ignition start performed before the current ignition start based on ignition timing of the ignition start performed before the current ignition start. | 10-01-2015 |