Abstract: The energization control apparatus can select a supercharging mode in which the energization control apparatus controls energization to an electric compressor so as to rotate the electric compressor to supercharge an intake air and an electric power consumption mode in which the energization control apparatus controls the energization to the electric compressor so as to deteriorate efficiency of a motor of the electric compressor than the supercharging mode to increase electric power consumption of the electric compressor. The energization control apparatus supplies regenerated electric power to the electric compressor and control the energization to the electric compressor with the electric power consumption mode when regenerative braking is performed by a generator and regenerated electric power for obtaining demand regenerative braking force is more than an input limiting level of a battery.

Abstract: The control apparatus closes the throttle, opens the bypass valve and supplies electric power to the electric compressor in a case where the remaining battery power of the battery is larger than the reference level when regenerative braking is performed with the first motor generator. The electric compressor is provided on the intake passage upstream of the throttle. The bypass valve is provided on the bypass passage that bypasses the electric compressor. According to the hybrid vehicle configured as above, regenerative braking force to be required can be obtained by performing electric power regeneration using the generator even when there is a constraint on regenerated electric power that the battery can accept.

Abstract: A control apparatus: controls air fuel ratios so that while combustion is performed sequentially through a plurality of cylinders, at least one cylinder where rich combustion is performed and the other cylinders where lean combustion is performed are generated; makes an internal combustion engine execute a catalyst warming operation for promoting warm-up of a three-way catalyst; and controls a second motor generator so that a torque difference between output torque from a rich cylinder where the rich combustion is performed and output torque from a lean cylinder where the lean combustion is performed is eliminated on an output shaft during the catalyst warming operation.

Abstract: Provided is an engine cooling system including: a first coolant circulation channel passing through an engine; a second coolant circulation channel bypassing the engine; an electric water pump (EWP); a connection channel connecting the first coolant circulation channel and the second coolant circulation channel; an electromagnetic valve arranged in the connection channel to change a flow rate of a coolant passing through the engine and flowing from the first coolant circulation channel to the second coolant circulation channel; an EGR cooler, a heater core, and an exhaust heat collection device arranged in the second coolant circulation channel; and a control unit, wherein closing of the electromagnetic valve is prohibited if there is an actuation request of the EGR cooler, the heater core, and the exhaust heat collection device when there is a valve closing request of the electromagnetic valve.

Abstract: A control apparatus: controls air fuel ratios so that while combustion is performed sequentially through a plurality of cylinders, at least one cylinder where rich combustion is performed and the other cylinders where lean combustion is performed are generated; makes an internal combustion engine execute a catalyst warming operation for promoting warm-up of a three-way catalyst; and controls a second motor generator so that a torque difference between output torque from a rich cylinder where the rich combustion is performed and output torque from a lean cylinder where the lean combustion is performed is eliminated on an output shaft during the catalyst warming operation.

Abstract: The control apparatus closes the throttle, opens the bypass valve and supplies electric power to the electric compressor in a case where the remaining battery power of the battery is larger than the reference level when regenerative braking is performed with the first motor generator. The electric compressor is provided on the intake passage upstream of the throttle. The bypass valve is provided on the bypass passage that bypasses the electric compressor. According to the hybrid vehicle configured as above, regenerative braking force to be required can be obtained by performing electric power regeneration using the generator even when there is a constraint on regenerated electric power that the battery can accept.

Abstract: The energization control apparatus can select a supercharging mode in which the energization control apparatus controls energization to an electric compressor so as to rotate the electric compressor to supercharge an intake air and an electric power consumption mode in which the energization control apparatus controls the energization to the electric compressor so as to deteriorate efficiency of a motor of the electric compressor than the supercharging mode to increase electric power consumption of the electric compressor. The energization control apparatus supplies regenerated electric power to the electric compressor and control the energization to the electric compressor with the electric power consumption mode when regenerative braking is performed by a generator and regenerated electric power for obtaining demand regenerative braking force is more than an input limiting level of a battery.

Abstract: An engine cooling system including a refrigerant circulation flow channel passing through an engine, an electric refrigerant pump, an electromagnetic valve arranged in the refrigerant circulation flow channel, and a control unit. In the engine cooling system, when the electric refrigerant pump is stopped and the voltage application to the electromagnetic valve is shut off when the electromagnetic valve is closed and the electric refrigerant pump is in operation, the voltage application to the electromagnetic valve is shut off when a first predetermined time period has passed after the electric refrigerant pump is stopped. When the engine is intermittently stopped during warming up of the engine, current application to the electromagnetic valve is shut off while the closed state of the electromagnetic valve is maintained.

Abstract: A cooling system circulates a cooling medium between an engine and a radiator. The cooling system includes a determination unit. The determination unit sets a relatively small predetermined value for a threshold when a thermostat is closed, and sets a predetermined value larger than the predetermined value for the threshold when the thermostat is open. The determination unit determines that there is a stuck-closed failure in a selector valve when a temperature difference between a coolant temperature from a first coolant temperature sensor and a coolant temperature from a second coolant temperature sensor is larger than or equal to the threshold.

Abstract: The pore clogging determination apparatus tentatively determines clogging of a pore (micropore) based on the rate of increase in a coolant temperature at an engine outlet. When the presence of pore clogging has been tentatively determined, the apparatus increases a rotation speed of a coolant pump to determine whether or not the coolant pump is idling. When it has been determined that the coolant pump is idling, the apparatus finalizes the determination of the clogging of the pore (micropore). This suppresses an erroneous determination of clogging of the pore that allows the coolant to flow in an engine cooling system.

Abstract: A cooling water control apparatus is a cooling water control apparatus for controlling a cooling apparatus having a first pipe which circulates cooling water through an engine; a second pipe which circulates the cooling water not through the engine; and a switching valve whose state is changed between opened and closed states, and has: a detecting device which detects first temperature of the cooling water in a pipe portion of the first pipe between the engine and the switching valve; and a determining device which determines that there is failure of the switching valve whose state is the closed state, if required period from the output of the command for changing the state of the switching valve from the opened state to the closed state until the first temperature reaches predetermined temperature is larger than predetermined target period.

Abstract: A cooling water control apparatus controls a cooling apparatus having first pipe which circulates cooling water through an engine; second pipe which circulates cooling water not through the engine; a switching valve whose state is changed between opened and closed states; and a supplying mechanism which supplies cooling water, and has a determining device which determines whether there is failure of the switching valve based on difference between first temperature of cooling water in first pipe and second temperature of cooling water in second pipe after the command for changing the state of the switching valve from closed state to opened state is outputted; and a controlling device which controls the supplying mechanism to supply cooling water even after the engine stops, when the engine stops while the determining device determines whether there is failure of the switching valve.

Abstract: A cooling system circulates a cooling medium between an engine and a radiator. The cooling system includes a determination unit. The determination unit sets a relatively small predetermined value for a threshold when a thermostat is closed, and sets a predetermined value larger than the predetermined value for the threshold when the thermostat is open. The determination unit determines that there is a stuck-closed failure in a selector valve when a temperature difference between a coolant temperature from a first coolant temperature sensor and a coolant temperature from a second coolant temperature sensor is larger than or equal to the threshold.

Abstract: An engine cooling system including a refrigerant circulation flow channel passing through an engine, an electric refrigerant pump, an electromagnetic valve arranged in the refrigerant circulation flow channel, and a control unit. In the engine cooling system, when the electric refrigerant pump is stopped and the voltage application to the electromagnetic valve is shut off when the electromagnetic valve is closed and the electric refrigerant pump is in operation, the voltage application to the electromagnetic valve is shut off when a first predetermined time period has passed after the electric refrigerant pump is stopped. When the engine is intermittently stopped during warming up of the engine, current application to the electromagnetic valve is shut off while the closed state of the electromagnetic valve is maintained.

Abstract: Provided is an engine cooling system including: a first coolant circulation channel passing through an engine; a second coolant circulation channel bypassing the engine; an electric water pump (EWP); a connection channel connecting the first coolant circulation channel and the second coolant circulation channel; an electromagnetic valve arranged in the connection channel to change a flow rate of a coolant passing through the engine and flowing from the first coolant circulation channel to the second coolant circulation channel; an EGR cooler, a heater core, and an exhaust heat collection device arranged in the second coolant circulation channel; and a control unit, wherein closing of the electromagnetic valve is prohibited if there is an actuation request of the EGR cooler, the heater core, and the exhaust heat collection device when there is a valve closing request of the electromagnetic valve.

Abstract: The pore clogging determination apparatus tentatively determines clogging of a pore (micropore) based on the rate of increase in a coolant temperature at an engine outlet. When the presence of pore clogging has been tentatively determined, the apparatus increases a rotation speed of a coolant pump to determine whether or not the coolant pump is idling. When it has been determined that the coolant pump is idling, the apparatus finalizes the determination of the clogging of the pore (micropore). This suppresses an erroneous determination of clogging of the pore that allows the coolant to flow In an engine cooling system.

Abstract: A cooling water control apparatus is a cooling water control apparatus for controlling a cooling apparatus having a first pipe which circulates cooling water through an engine; a second pipe which circulates the cooling water not through the engine; and a switching valve whose state is changed between opened and closed states, and has: a detecting device which detects first temperature of the cooling water in a pipe portion of the first pipe between the engine and the switching valve; and a determining device which determines that there is failure of the switching valve whose state is the closed state, if required period from the output of the command for changing the state of the switching valve from the opened state to the closed state until the first temperature reaches predetermined temperature is larger than predetermined target period.

Abstract: A cooling water control apparatus controls a cooling apparatus having first pipe which circulates cooling water through an engine; second pipe which circulates cooling water not through the engine; a switching valve whose state is changed between opened and closed states; and a supplying mechanism which supplies cooling water, and has a determining device which determines whether there is failure of the switching valve based on difference between first temperature of cooling water in first pipe and second temperature of cooling water in second pipe after the command for changing the state of the switching valve from closed state to opened state is outputted; and a controlling device which controls the supplying mechanism to supply cooling water even after the engine stops, when the engine stops while the determining device determines whether there is failure of the switching valve.

Abstract: A cooling control system for an engine is provided. Cooling water circulate within a cooling circuit via a water pump and the engine, and a bypass circuit is formed to circulate the cooling water without passing through the engine. A first temperature sensor is disposed on the cooling circuit, and a second temperature sensor is disposed on the bypass circuit to detect a temperature of the cooling water. A switching valve controls a flow rate of the cooling water flowing through the cooling circuit, and the switching valve is provided with a water passage that allows the cooling water to flow therethrough when is closed. The cooling control system is configured to estimate an amount of clogging of the water passage based on a temporal change in a temperature difference between temperatures of the cooling water detected by the first temperature sensor and the second temperature sensor, under a condition in that the engine is stopped, the switching valve is closed, and the water pump is driven.

Abstract: Provided is an electrosilver plating bath yielding a semiglossy to glossy appearance across a wide current density range without the use of a cyan compound, and a plating method using the electrosilver plating bath. An electrosilver plating fluid that is an aqueous solution containing (A) at least one soluble silver compound, (B) at least one benzoic acid derivative or a salt of the derivative, and (C) at least one acid and/or complexing agent, wherein the benzoic acid derivative is expressed by the following general formula (m is 1, 2, 3, 4 or 5; Ra is a carboxyl group; individual instances of Rb are selected independently from an aldehyde group, a carboxyl group, an amino group, a hydroxyl group, or a sulfonic acid group; individual instances of Rc are independently oxygen or any substituent; and one or more oxygen or CH2 may be introduced into the bond between Ra or Rb and a benzene ring.