Abstract:
A control device of a vehicle including an engine, an electric motor, and a clutch disposed on a power transmission path between the engine and the electric motor, the control device of a vehicle performing an ignition start causing combustion in a cylinder of the engine to rotate the engine at a start of the engine, the control device of a vehicle switching a cylinder in which combustion is first caused in the engine based on an actuation during a rotation stop process of the engine of an exhaust valve in a cylinder stopped in an expansion stroke, when performing the ignition start at the start of the engine.
Abstract:
A drive circuit (52) that is commonly provided with respect to two fuel injection valves (24R and 24L) for the same cylinder, and drive the two fuel injection valves (24R and 24L) for the same cylinder on the basis of a command from an ECU (40), is provided. An electric conduction line (52) that electric current supplied to the two fuel injection valves (24R and 24L) flows through, is provided. The electric conduction line (52) includes a common section (56a) one end of which is connected to the drive circuit (52), and branch sections (56b) which are sections following the other end of the common section (56a) that the electric conduction line (56) branches off at and on which the two fuel injection valves (24R and 24L) for the same cylinder are respectively installed. The electric current value I flowing through the common section (56a) is detected. An electric resistance (58) that is inserted in the branch section (56b) for the fuel injection valve (24L), is provided. A fuel injection valve, at which an occurrence of abnormality concerning electric conduction is recognized, out of the two fuel injection valves (24R and 24L) for the same cylinder, is detected on the basis of the magnitude of the electric current value I.
Abstract:
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.
Abstract:
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.
Abstract:
A skew adjustment circuit, provided in an integrated circuit device having a plurality of signal lines transmitting a plurality of signals respectively, and a plurality of buffer circuits to which a plurality of signals transmitted through the signal lines are respectively input, has: a plurality of delay circuits, respectively provided in stages preceding the buffer circuits; a monitoring circuit monitoring changes in the signals of the plurality of signal lines; and a delay adjustment circuit, which decides delay amounts for the plurality of delay circuits based on a monitoring result output of the monitoring circuit, and sets the delay amounts in the plurality of delay circuits. The monitoring circuit detects, as the monitoring result, a number of signal changes in the signal lines in which a signal change occurs in a monitoring period, and the delay adjustment circuit decides the delay amounts based on the number of signal changes.
Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
In the present invention, provided is a molding die with which shape of the molding die can be reliably transferred to a molded material, even though precision molding is conducted at a shape error of 1.0 μm or less. This molding die possesses a glass substrate, at least one resin die formed on the glass substrate, and an inorganic oxide film to cover the glass substrate and the at least one resin, wherein the at least one resin die made of a photo-curable resin has a light transmittance of 20% or more with respect to light having a wavelength of 365 nm and has a hardness of 30-90 in terms of shore D, and the molding die comprises the inorganic oxide film having been subjected to a mold-releasing treatment.