Abstract: An engine cooling apparatus includes an engine for vehicle traveling, a pump driven by the engine, a heat exchanger, a circulation passage for circulating cooling liquid between the engine and the heat exchanger by driving the pump, a solenoid valve capable of opening/closing the circulation passage, and a controller for controlling operations of the engine. The solenoid valve includes a valve body movable between a position away from a valve seat and a position contacting the valve seat and held to contact the valve seat and a solenoid capable of maintaining contact between the valve body and the valve seat in response to supply of power thereto. When driving of the pump under a non-energized state of the solenoid, the valve body is movable to the position away from the valve seat by the cooling liquid fluid pressure. Power supply to the solenoid is initiated before start-up of the engine.

Abstract: A fluid control valve includes an inflow channel for introducing fluid, an outflow channel for discharging the fluid, a valve seat, a valve body for blocking/allowing communication between the inflow channel and the outflow channel in association with a movement thereof into contact with or away from the valve seat, and a solenoid configured to apply a magnetic force to the valve body, the magnetic force being generated in response to supply of electric power to the solenoid. The inflow channel is formed through the core of the solenoid so that the core and the fluid comes into contact with each other in the inflow channel.

Abstract: Provided is a control valve that hardly generates noise from vibration applied thereto, while achieving compactization and power consumption saving of the valve. The valve is incorporated in a coolant circulatory passageway for circulating coolant between an engine and a heat exchanger via a pump. The valve includes a main body having a coolant channel and a valve seat, a valve body movable between a position away from the valve seat and a position in, contact with the valve seat, and a solenoid configured to cause the valve body to be adhered to the valve seat with a magnetic force generated in response to supply of electric power thereto. The control valve is configured such that the power supply to the solenoid is started when an ignition key of the engine is under its ON state and the pump is stopped.

Abstract: An object is to provide a vehicle coolant control valve having excellent response, small size and weight, and low power consumption. A coolant stop valve (vehicle coolant control valve) valve comprises a valve body for controlling the flow of a fluid, the valve body having a magnetic body; a coil spring (urging device) for moving the valve body in the closing direction; a valve seat capable of coming in contact with the valve body; and a solenoid for moving the valve body in the closing direction; wherein the valve body is moved in the opening direction by fluid pressure of a fluid discharged from a water pump (pump) during operation of the water pump (pump), against the movement force of the coil spring (urging device) in the closing direction.

Abstract: A first calculating section (118) calculates an allowable output power (WoutA) of the secondary battery before a ripple temperature increase operation for increasing the temperature of a secondary battery by causing a ripple current to flow in the secondary battery is performed, the allowable output power being determined in advance based on the temperature and a state of charge (SOC) of the secondary battery. A second calculating section (120) calculates the allowable output power (WoutB) achieved when the ripple temperature increase operation is performed. A determining section (122) determines whether to perform the ripple temperature increase operation so that when the allowable output power (WoutB) is equal to or greater than the allowable output power (WoutA), the ripple temperature increase operation is performed and, when the allowable output power (WoutB) is smaller than the allowable output power (WoutA), the ripple temperature increase operation is not performed.

Abstract: A first calculating section (118) calculates an allowable output power (WoutA) of the secondary battery before a ripple temperature increase operation for increasing the temperature of a secondary battery by causing a ripple current to flow in the secondary battery is performed, the allowable output power being determined in advance based on the temperature and a state of charge (SOC) of the secondary battery. A second calculating section (120) calculates the allowable output power (WoutB) achieved when the ripple temperature increase operation is performed. A determining section (122) determines whether to perform the ripple temperature increase operation so that when the allowable output power (WoutB) is equal to or greater than the allowable output power (WoutA), the ripple temperature increase operation is performed and, when the allowable output power (WoutB) is smaller than the allowable output power (WoutA), the ripple temperature increase operation is not performed.

Abstract: An alternating current impedance-estimating section (106) estimates an alternating current impedance (Rh) of the secondary battery based on electric current (I) and voltage (V) of the secondary battery detected when a ripple generating section causes a ripple current to flow in the secondary battery. A temperature estimating section (108) estimates the temperature (T) of the secondary battery based on the alternating current impedance (Rh) estimated by the alternating current impedance-estimating section (106) with the use of the relation, obtained in advance, between the temperature (T) of the secondary battery and the alternating current impedance (Rh) of the secondary battery at a ripple frequency.

Abstract: A temperature elevating apparatus of a secondary battery (10) includes a ripple generator (20) and a controller (30). Ripple generator (20) is connected to secondary battery (10), and is configured to actively generate ripple current (I) of a predetermined frequency in secondary battery (10). Controller (30) controls ripple generator (20) to elevate a temperature of the secondary battery by generating ripple current (I) in secondary battery (10). Here, the predetermined frequency is set to be a frequency in a frequency region where an absolute value of an impedance of secondary battery (10) relatively decreases based on frequency characteristics of the impedance of secondary battery (10).

Abstract: A water pump for a vehicle includes a power transmitting member, a driven shaft rotated independently from the power transmitting member, an impeller, a biasing member for pressing an inner circumferential surface of the power transmitting member and for rotating in order to transmit a rotation of the power transmitting member to the driven shaft when the biasing member contacts the inner circumferential surface, and a control member for allowing the power transmitting member and the biasing member to come in contact with each other or to come out of contact from each other and for controlling a contacting state between the power transmitting member and the biasing member.

Abstract: A variable valve timing control apparatus includes: a relative rotational phase adjusting mechanism capable of adjusting a relative rotational phase between a drive-side rotational member and a driven-side rotational member between the most advanced angle phase and the most retarded angle phase; and a lock mechanism capable of locking the relative rotational phase at an intermediate phase between the most advanced angle phase and the most retarded angle phase; a first pump operated by a driving force of an engine; and an electrically driven second pump operated as an electrically driven pump. Hydraulic fluid is supplied from at least one of the first pump and the second pump, and the second pump is capable of operating even if the first pump is inoperative when the engine is not running.

Abstract: A throttle controller includes a main body to which is connected a body cover which accommodates therein a power transmitting mechanism constituted by a pinion gear, a secondary gear, and a final gear. Accommodated in the body cover are a built-in throttle sensor and a lever connecting the throttle sensor and the throttle shaft. The throttle controller is less complicated in construction, requiring a smaller number of parts, and allows realization of reduced production cost as compared to other known constructions. In addition, the assembly of the throttle sensor is easier.

Abstract: A throttle control apparatus controls the amount of inlet air fed to an internal combustion engine on the basis of the degree of opening of a throttle valve. The throttle valve is constituted by a valve body that is fixedly mounted on a valve shaft which is rotatably supported on a housing. The valve shaft is connected, via a reduction mechanism, to an output shaft of a coreless DC motor that is accommodated within the housing. The DC motor is operated to increase or decrease the amount of inlet air to the engine based on a change of the acceleration pedal position, for example by rotating the valve body by way of the valve shaft through an angle that corresponds to the change in position of the accelerator pedal. Employing a DC coreless motor allows the throttle valve to respond to a very quick positioning of the acceleration pedal with a relatively great degree of accuracy.

Abstract: A fuel injection valve comprises a valve body having a injection port at an edge thereof, a needle valve member interposed in the valve body and opening or closing the injection port, a first spring member for energizing the needle valve member in a one direction, a piezoelectric device being a piezoelectric element having a cylindrical body mounted on the interior of the valve body in a condition that a positive or negative voltage is applied, and controlling the needle valve member in the direction of opening the injection port by applying a voltage changed over positively or negatively at the time of fuel injection while pushing the needle valve member in the opposite direction in response to the energizing direction of the first spring member, and a second spring member for providing a larger energizing force than the energizing force of the first spring member described above and being interposed between the valve body and the piezoelectric device described above.

Abstract: A bellows pump comprises a body, a movable supporting member supported in the body movably, a bellows fixed between the body and the movable supporting member, peak portions of the bellows, and a driving means for driving the movable supporting member, wherein the bellows has a thin portion and a thick portion, and pitches of the bellows are in inverse proportion to the thicknesses thereof.

Abstract: An injection device includes a housing, a first member accommodated in the housing and having an inner space which is terminated at one side thereof in a seat, a second member having at one end thereof a head and disposed in the inner space of the nozzle member in such a manner that an axial passage is defined therebetween and the head and the seat constitute a valve, and an actuator for opening/closing the valve. A horn has an ultrasonic vibrator to vibrate the horn so that injected fuel is atomized.