Abstract: An anchor is buried in the ground near a place where a utility pole is installed. A guy wire is connected to the utility pole. A guy wire rod couples the anchor and the guy wire. An electrode is buried in the ground near a place where the anchor is buried. A power supply supplies an anti-corrosion current with an underground portion of the guy wire rod and the anchor as a cathode and the electrode as an anode. The power supply includes a photovoltaic cell.

Abstract: A fuel injection device for supplying high-pressure fuel to an internal combustion engine includes a fuel supply pump, a first common rail and a second common rail. High-pressure fuel is directly supplied to the first common rail and then to the second common rail from the first common rail through a connecting passage having an orifice. The high-pressure fuel accumulated in the common rails is supplied to injectors and is injected into cylinders in a controlled manner. To suppress pressure wave propagation from the first common rail to the second common rail while providing an appropriate flow passage size, a passage diameter of the orifice is set to 0.9 mm–1.3 mm. In this manner, a pressure difference between the first common rail and the second common rail is minimized.

Abstract: In an injection quantity control apparatus for an internal combustion engine, a command value of an injection quantity is calculated based on a command injection quantity. After that, an injector provided for each cylinder is actuated so that a fuel injection quantity supplied into each of the cylinders is controlled in accordance with the command value. In that process, a correction amount learned in a learning control is reflected in the calculation of the command injection quantity or the command value. The learning control is performed while a cylinder cut-off control is performed when a predetermined engine operating condition is met. In the cylinder cut-off control, all of the cylinders are divided into K groups and the cylinder cut-off control is performed with the cylinders of a group in the K groups.

Abstract: A fuel injection device for supplying high-pressure fuel to an internal combustion engine includes a fuel supply pump, a first common rail and a second common rail. High-pressure fuel is directly supplied to the first common rail and then to the second common rail from the first common rail through a connecting passage having an orifice. The high-pressure fuel accumulated in the common rails is supplied to injectors and is injected into cylinders in a controlled manner. To suppress pressure wave propagation from the first common rail to the second common rail while providing an appropriate flow passage size, a passage diameter of the orifice is set to 0.9 mm-1.3 mm. In this manner, a pressure difference between the first common rail and the second common rail is minimized.

Abstract: In an injection quantity control apparatus for an internal combustion engine, a command value of an injection quantity is calculated based on a command injection quantity. After that, an injector provided for each cylinder is actuated so that a fuel injection quantity supplied into each of the cylinders is controlled in accordance with the command value. In that process, a correction amount learned in a learning control is reflected in the calculation of the command injection quantity or the command value. The learning control is performed while a cylinder cut-off control is performed when a predetermined engine operating condition is met. In the cylinder cut-off control, all of the cylinders are divided into K groups and the cylinder cut-off control is performed with the cylinders of a group in the K groups.

Abstract: An internal combustion is capable of switching, during engine operation, between a low-temperature combustion state in which an intake air with a high EGR rate is burned to operate the engine, and a normal combustion state in which an intake air with a low EGR rate is burned to operate the engine. In the internal combustion engine, a pilot injection is executed in addition to a main fuel injection, and furthermore the execution of the pilot injection is restricted during the engine operation with a combustion state switched to the low-temperature combustion state.

Abstract: An internal combustion is capable of switching, during engine operation, between a low-temperature combustion state in which an intake air with a high EGR rate is burned to operate the engine, and a normal combustion state in which an intake air with a low EGR rate is burned to operate the engine. In the internal combustion engine, a pilot injection is executed in addition to a main fuel injection, and furthermore the execution of the pilot injection is restricted during the engine operation with a combustion state switched to the low-temperature combustion state.