Abstract: The cooling device according to the present invention includes an electric water pump for circulating cooling water through an internal combustion engine of a vehicle, and controls the discharge flow rate of the electric water pump as follows. Until the cooling water temperature. TW reaches a warm-up completion determination temperature, the cooling device increases the discharge flow rate along with an increase of the cooling water temperature TW. After the cooling water temperature TW reaches the warm-up completion determination temperature, the cooling device controls the discharge flow rate so as to bring the combustion chamber wall temperature TCYL toward a target temperature. Thereby, the cooling device can warm up the internal combustion engine more efficiently, and improve the combustion performance of the internal combustion engine after the completion of warm-up.

Abstract: A cooling device for an internal combustion engine of a vehicle according to the claimed invention includes: an electric water pump; a first path including a cooling water passage in a cylinder head and extending through a heater core for air heating and a radiator; and a second path bypassing the heater core and radiator. When the internal combustion engine is automatically stopped while the vehicle is stopping, the cooling device causes the electric water pump to operate, and increases the cooling water circulation ratio through the first path while reducing the cooling water circulation ratio through the second path. Thereby, the cooling device improves fuel economy during acceleration at the vehicle start from the automatic stop state of the internal combustion engine while suppressing the deterioration of the air heating performance during the automatic stop of the internal combustion engine while the vehicle is stopping.

Abstract: A gas sensor element having a porous protective layer with excellent water repellency. Provided is a gas sensor element having a detection portion, which has a stack of a solid electrolyte body having a pair of electrodes on opposite sides thereof and a heat generating body including a heat generating source, and a porous protective layer formed around the detection portion. The porous protective layer has thermal conductivity ? in the range of 0.2 to 5 W/mK, and has ?Cp?, which is the product of the thermal conductivity ?(W/mK), density ?(g/m3), and specific heat Cp(J/gK), in the range of 5.3×105 to 2.1×107 WJ/m4K2.

Abstract: The present invention provides a cooling system for an internal combustion engine, comprising: a flow channel switching valve for switching between a plurality of cooling water channels at least including a heater line for air heating, a block line for cooling an engine block, and a transmission line for an oil warmer of a transmission so as to sequentially open at least one of the plurality of cooling water channels in accordance with a warm-up state of the internal combustion engine; and a control device for controlling opening and closing of the flow channel switching valve so as to restrict a cooling water distribution rate of the heater line. The cooling system allows acceleration of cooling water temperature recovery from a temporary drop.

Abstract: The present invention relates to a cooling device of internal combustion engine for vehicle and a control method thereof. The cooling device according to the present invention includes: an electric water pump; a bypass line bypassing a radiator; and a flow rate control valve for controlling a flow rate of cooling water circulating through the bypass line. During a low external air temperature state where the external air temperature is below a threshold, the cooling device increases the temperature of the cooling water by increasing the flow rate of the cooling water circulating through the bypass line as compared to during a high external air temperature state where the external air temperature is above the threshold, and increases a circulation flow rate of the cooling water by increasing a discharge flow rate of the electric water pump as compared to during the high external air temperature state.

Abstract: The present invention relates to a cooling device and a control method therefor. This cooling device includes: a first cooling liquid line routed by way of a cylinder head and a radiator; a second cooling liquid line routed by way of a cylinder block while bypassing the radiator; a third cooling liquid line routed by way of the cylinder head and a heater core while bypassing the radiator; a flow rate control valve for distributing cooling water to the cooling liquid lines; and mechanical and electric water pumps. A control unit controls the flow rate control valve according to the temperatures of the cylinder head and block, during engine operation, and causes the electric water pump to operate while controlling the flow rate control valve according to the temperature of the cylinder head, and whether or not heat exchange in the heater core is requested, during temporary engine stop.

Abstract: There is provided a configuration in which a cylinder which is in an inlet stroke when an internal combustion engine is in a stop (automatic stop) state is determined and stored, and when starting the engine upon detection of a start request, the fuel injection of an initial cycle to the cylinder, which has been determined as having been stopped in the inlet stroke when the engine was in the stop state before starting, is split into a plurality if injections at least including an injection before engine rotation, to thereby perform injections. As a result, startability is improved while suppressing pre-ignition at the time of starting.

Abstract: The present invention relates to a cooling control apparatus which performs control for cooling an internal combustion engine by causing an electric pump to circulate cooling water and causing an electric fan to supply cooling air to a radiator. The cooling control apparatus comprises an electric pump for circulating a coolant through a coolant passage formed in the internal combustion engine, and a radiator and a radiator fan which are for cooling the coolant. When the internal combustion engine stops after completion of warming-up, the radiator fan and the electric pump are driven to cool the internal combustion engine, and when a temperature of the coolant decreases to less than a temperature at a time of engine stop, the radiator fan is stopped in a state in which the electric pump is operated.

Abstract: A cooling system of an internal combustion engine includes a flow channel switching valve for sequentially switching between a plurality of cooling water passages so as to distribute cooling water to at least one cooling water passage. When a control device for the cooling system switches between the cooling water passages by controlling the flow channel switching valve in accordance with the progress of warm-up of the internal combustion engine, the control device suppresses the distribution rate of the cooling water to the cooling water passage to which the distribution of the cooling water is just started.

Abstract: The present invention relates to a cooling device and a control method for the same. This cooling device includes: a first cooling liquid line routed by way of a cylinder head and a radiator; a second cooling liquid line routed by way of a cylinder block while bypassing the radiator; an electric flow rate control valve whose inlet is connected to the first and second cooling liquid lines, and whose outlet is connected to the intake side of an electric water pump; and a bypass line that branches off from the first cooling liquid line at a point between the cylinder head and the radiator and that joins to the outlet of the flow rate control valve while bypassing the radiator. A control unit controls the flow rate control valve according to the temperature of the cylinder head and the temperature of the cylinder block.

Abstract: The present invention relates to a cooling device and a control method for the same. This cooling device includes: a first cooling liquid line routed by way of a cylinder head and a radiator; a second cooling liquid line routed by way of a cylinder block while bypassing the radiator; an electric flow rate control valve whose inlet is connected to the first and second cooling liquid lines, and whose outlet is connected to the intake side of an electric water pump; and a bypass line that branches off from the first cooling liquid line at a point between the cylinder head and the radiator and that joins to the outlet of the flow rate control valve while bypassing the radiator. A control unit controls the flow rate control valve according to the temperature of the cylinder head and the temperature of the cylinder block.

Abstract: The present invention relates to a cooling device and a control method therefor. This cooling device includes: a first cooling liquid line routed by way of a cylinder head and a radiator; a second cooling liquid line routed by way of a cylinder block while bypassing the radiator; a third cooling liquid line routed by way of the cylinder head and a heater core while bypassing the radiator; a flow rate control valve for distributing cooling water to the cooling liquid lines; and mechanical and electric water pumps. A control unit controls the flow rate control valve according to the temperatures of the cylinder head and block, during engine operation, and causes the electric water pump to operate while controlling the flow rate control valve according to the temperature of the cylinder head, and whether or not heat exchange in the heater core is requested, during temporary engine stop.

Abstract: A side airbag device including an airbag (2); an inflator (3); and an inner tube (4) formed of a fabric and covering discharge holes (3a) of the inflator (3). The inner tube (4) protrudes toward a center of the airbag (2) in a deployed state and a first end (4b) is closed in the direction of gas discharge, and second ends (4c) that are in a vehicle height direction of the airbag (2) in the deployed state are open. The inner tube (4) is folded back at a folded-back portion (4d) inside the airbag (2) when the airbag (2) is folded in a case where the side airbag device is installed in a vehicle seat back.

Abstract: A gas sensor element having a porous protective layer with excellent water repellency. Provided is a gas sensor element having a detection portion, which has a stack of a solid electrolyte body having a pair of electrodes on opposite sides thereof and a heat generating body including a heat generating source, and a porous protective layer formed around the detection portion. The porous protective layer has thermal conductivity ? in the range of 0.2 to 5 W/mK, and has ?Cpp, which is the product of the thermal conductivity ?(W/mK), density ?(g/m3), and specific heat Cp(J/gK), in the range of 5.3×105 to 2.1×107 WJ/m4K2.

Abstract: There is provided a configuration in which a cylinder which is in an inlet stroke when an internal combustion engine is in a stop (automatic stop) state is determined and stored, and when starting the engine upon detection of a start request, the fuel injection of an initial cycle to the cylinder, which has been determined as having been stopped in the inlet stroke when the engine was in the stop state before starting, is split into a plurality if injections at least including an injection before engine rotation, to thereby perform injections. As a result, startability is improved while suppressing pre-ignition at the time of starting.

Abstract: A control apparatus for an internal combustion engine where the inside of a combustion chamber is divided into a layer of internal EGR gas and a combustible layer to perform stratified combustion. In a port-injected engine equipped with first and second intake valves, the opening timing of the first intake valve is set before a top dead center (TDC) and the opening timing of the second intake valve is set after the TDC, and the closing timings of the first intake valve and the second intake valve are set after a bottom dead center. Then, fuel injection toward the first intake valve is started after the EGR gas, which was blown back to the intake port upstream of the first intake valve, is drawn into the combustion chamber after the top dead center.

Abstract: The present invention relates to an apparatus for and a method of controlling a variable valve timing mechanism. The valve timing mechanism changes over between a first cam for which the closing timing IVC of the intake valve is after intake bottom dead center, and a second cam for which the closing timing IVC is closer to intake bottom dead center than the closing timing IVC with the first cam. Here at the time of stopping the internal combustion engine, the valve timing mechanism changes over to the first cam, and the initial intake stroke performs operation at low effective compression ratio. In the second and subsequent intake strokes, the valve timing mechanism changes from the first cam to the second cam.

Abstract: A control apparatus and a control method for an internal combustion engine in a vehicle in which a battery and the internal combustion engine are mounted estimate a temperature of the internal combustion engine based on battery voltage. The control apparatus estimates water temperature TWS, at the time of starting up the internal combustion engine, based on battery voltage VB before starting the startup of the internal combustion engine or minimum value VBmin of battery voltage VB during cranking. Then, the control apparatus controls a fuel injection amount and a valve timing based on water temperature TWS estimated based on battery voltage VB when a water temperature sensor has failed.

Abstract: A gas sensor element includes a main body and a protective layer. The main body has four plane portions and four corner portions each of which is formed between one adjacent pair of the plane portions. The four corner portions include a pair of first corner portions that are formed on a porous diffusion-resistant layer side in a lamination direction of the main body and a pair of second corner portions that are formed on a heater layer side in the lamination direction. The protective layer is comprised of an inner protective layer that covers at least the first corner portions of the main body and an outer protective layer that covers the entire outer periphery of the main body and the inner protective layer. The protective layer has a larger average thickness at the first corner portions than at the plane portions of the main body.

Abstract: A bonding material and a related manufacturing method are disclosed in which an unfired ceramic body A, internally formed with a cavity portion or a surface formed with a concaved portion, and an unfired ceramic body B are bonded to each other. The bonding material is applied to a bonding area between the unfired ceramic bodies A and B in a thickness ranging from 10 to 25 ?m to provide a bonded body that is fired to obtain a ceramic bonded body. The bonding material contains an inorganic powder, an organic binder and an organic solvent in a composition to satisfy relationships 0?X—Z?2.6 and 0?Y—Z?2.6 where “X” represents a firing contraction ratio (%) of the unfired ceramic body A, “Y” a firing contraction ratio (%) of the unfired ceramic body B, and “Z” a firing contraction ratio of tie bonding material.