Abstract: A vehicle authentication control apparatus comprises an information acquisition unit for acquiring, via an in-vehicle communication network, authenticated information, which is first format information generated by a first authentication method transmitted by at least one vehicle control unit mounted on a vehicle, authentication processing unit for executing authentication processing on the authenticated information, and an information transmitting unit for transmitting, via the in-vehicle communication network to another vehicle control unit, a result of the authentication processing, wherein the in-vehicle communication network has a plurality of vehicle control units physically connected thereto, and authenticated information generated by the first authentication method and second format information generated by a method different from the first authentication method are communicated therethrough, and the first authentication method is for executing authentication processing based on an actual data portion

Abstract: An illegal signal detection apparatus includes: CPU and memory. The CPU is configured to perform: reading normal signal input to communication network at first cycle and abnormal signal input to the communication network at second cycle shorter than the first cycle; counting number of the abnormal signal read in the reading; and determining whether count value corresponding to the number of the abnormal signal read in the reading is equal to or greater than predetermined threshold value when abnormal state in which the abnormal signal is read in predetermined unit time period continuously occurs for predetermined time period. The CPU is configured to perform: the counting including weighting the count value so that the count value increases as compared with the number of the abnormal signal read in the reading with increase in the number of the abnormal signal read in the reading.

Abstract: A computer of an active vibration damping device calculates operation command values for an actuator from rotation information of a drive source, and corrects the operation command values in accordance with an internal temperature of the actuator. The computer applies a drive voltage to the actuator using a voltage duty ratio based on the corrected operation command values. The computer also estimates the internal temperature on the basis of an average duty ratio as an average of the voltage duty ratios in a predetermined interval.

Abstract: A phase variable control is prohibited in the case that a rotational speed NE of the engine is less than a first predetermined rotational speed NE_th1.

Abstract: A computer of an active vibration damping device calculates an output average duty ratio which is used for realizing operation command values. On the basis of the operation command values and an integer value point number, which is set so as to become larger as a period of rotation of the drive source becomes longer, the computer calculates a reference average duty ratio for realizing the operation command values when an actuator internal temperature is a reference temperature. The computer calculates the actuator internal temperature on the basis of a deviation between the output average duty ratio and the reference average duty ratio.

Abstract: A computer of an active vibration damping device calculates operation command values for an actuator from rotation information of a drive source, and corrects the operation command values in accordance with an internal temperature of the actuator. The computer applies a drive voltage to the actuator using a voltage duty ratio based on the corrected operation command values. The computer also estimates the internal temperature on the basis of an average duty ratio as an average of the voltage duty ratios in a predetermined interval.

Abstract: A computer of an active vibration damping device calculates an output average duty ratio which is used for realizing operation command values. On the basis of the operation command values and an integer value point number, which is set so as to become larger as a period of rotation of the drive source becomes longer, the computer calculates a reference average duty ratio for realizing the operation command values when an actuator internal temperature is a reference temperature. The computer calculates the actuator internal temperature on the basis of a deviation between the output average duty ratio and the reference average duty ratio.

Abstract: A phase variable control is prohibited in the case that a rotational speed NE of the engine is less than a first predetermined rotational speed NE_th1.

Abstract: A vehicle including a housing supported on a framework member of the vehicle via a supporting member, a liquid medium supply unit fixed to the housing and driven by a motor to supply a liquid medium to a cooled or lubricated portion, and a first atmosphere communicating mechanism that establishes a communication between an inside of a motor portion of the liquid medium supply unit and atmosphere, the first atmosphere communicating mechanism including a volumetric member that is disposed apart from the liquid medium supply unit in a position higher than the liquid medium supply unit, that has a predetermined volumetric space, and that is fixed to the housing.

Abstract: There is provided a sound generating device for vehicles that is capable of improving the sensing of acceleration feeling. The sound generating device for vehicles includes an input unit that receives an input of a speed of a vehicle; and a generation unit that generates a sound including a plurality of frequency components when the speed of the vehicle is a first speed. When the speed of the vehicle changes from the first speed to a second speed (higher than the first speed), the generation unit shifts the frequency components included in the sound to a higher frequency side and reduces the sound at a higher frequency band in the shifted frequency components. The generation unit preferably performs pitch shift processing and low pass filter processing (and more preferably performs moving average processing) on the sound.

Abstract: An active vibration isolating support apparatus reduces vibration transmitted from a reciprocating engine. The apparatus supports the engine via vibration isolating support units each of which includes an actuator. The vibration isolating units are disposed on opposite sides of a crankshaft of the engine. The apparatus includes a control unit to make the actuator extend and contract periodically depending on a vibrational state of the engine so as to reduce the transmission of engine vibrations to a vehicle body. The control unit drives the actuator of one of the vibration isolating support units to contract, the one of the vibration isolating support units being compressed by roll vibration associated with an initial explosion after a time when the engine starts, so as to reduce transmission of roll vibration in a direction which is reverse to the rotation direction of the crankshaft.

Abstract: An electromagnetic actuator is provided that can achieve reduction in size, weight and cost by a simple configuration, and a solenoid-valve device provided therewith. The electromagnetic actuator section includes fixed pole pieces that a middle of three fixed magnetic poles has, and coils wound around the fixed pole pieces. The coils are wound in the same winding direction. The needle has first and second stabilization points corresponding to the fixed magnetic poles on both sides in the axial direction, and a third stabilization point corresponding to the middle fixed magnetic pole, as stabilization points at which a stationary state can be maintained when the coil is unenergized.

Abstract: A low-cost brushless DC motor is provided with high efficiency operation and low torque pulsation. The brushless DC motor includes a stator around which an inductive coil is wound, a rotor which is housed in the stator and which can rotate in a prescribed direction, and pairs of magnets which are on opposite sides of the rotation shaft of the rotor and which are fixed to the stator.

Abstract: A vehicle including a housing supported on a framework member of the vehicle via a supporting member, a liquid medium supply unit fixed to the housing and driven by a motor to supply a liquid medium to a cooled or lubricated portion, and a first atmosphere communicating mechanism that establishes a communication between an inside of a motor portion of the liquid medium supply unit and atmosphere, the first atmosphere communicating mechanism including a volumetric member that is disposed apart from the liquid medium supply unit in a position higher than the liquid medium supply unit, that has a predetermined volumetric space, and that is fixed to the housing.

Abstract: There is provided a sound generating device for vehicles that is capable of improving the sensing of acceleration feeling. The sound generating device for vehicles includes an input unit that receives an input of a speed of a vehicle; and a generation unit that generates a sound including a plurality of frequency components when the speed of the vehicle is a first speed. When the speed of the vehicle changes from the first speed to a second speed (higher than the first speed), the generation unit shifts the frequency components included in the sound to a higher frequency side and reduces the sound at a higher frequency band in the shifted frequency components. The generation unit preferably performs pitch shift processing and low pass filter processing (and more preferably performs moving average processing) on the sound.

Abstract: An active vibration isolating support apparatus reduces vibration transmitted from a reciprocating engine. The apparatus supports the engine via vibration isolating support units each of which includes an actuator. The vibration isolating units are disposed on opposite sides of a crankshaft of the engine. The apparatus includes a control unit to make the actuator extend and contract periodically depending on a vibrational state of the engine so as to reduce the transmission of engine vibrations to a vehicle body. The control unit drives the actuator of one of the vibration isolating support units to contract, the one of the vibration isolating support units being compressed by roll vibration associated with an initial explosion after a time when the engine starts, so as to reduce transmission of roll vibration in a direction which is reverse to the rotation direction of the crankshaft.

Abstract: A shutter unit for a vehicle, capable of properly determining failure of a shutter without using a sensor which directly detects a position of the shutter. The shutter unit includes a return spring for returning the shutter to a predetermined initial position by urging the shutter, and a rotating machine configured to be capable of converting input motive power to electrical power and input electrical power to motive power by electromagnetic induction action. The rotating machine drives the shutter by the motive power obtained by conversion. The shutter unit executes return control that stops supply of electric power to the rotating machine to return the shutter to the initial position by urging of the shutter by the return spring, and determines failure of the shutter based on a rotating machine induced voltage of the rotating machine, detected during execution of the return control.

Abstract: A method includes the steps of: detecting “starter ON” by IG-SW signal (step S12); calculating an moving average value TCRKAVE of crank pulse intervals (steps S13-S17); determining engine starting when the TCRKAVE is less than or equal to a threshold value Tth (step S19); and controlling a vibration isolating support unit M based on a natural vibration frequency of the engine when engine starting is determined (steps S20-S22).

Abstract: A solenoid driving device with excellent electric power efficiency which drives and controls an actuator including a solenoid and an active vibration damping support device with excellent electric power efficiency which includes the solenoid driving device are disclosed. The solenoid driving device includes a booster circuit 120 which boosts a battery voltage, and driving circuits 121A, 121B which an actuator with the electric power supplied and boosted by the booster circuit 120. ACM_ECU200A including a micro computer 200b calculates the magnitude of the vibration of the engine, an engine vibration cycle and a phase lag to obtain the drive frequency fDV of the actuator in the vibration state estimating unit 234 and the phase detecting unit 235. A booster circuit controlling unit 237 of the micro computer 200b determines the target voltage V based on the drive frequency fDV.

Abstract: In a so-called motoring state at the time of engine starting before actuating engine, there is a problem that a roll vibration, which is generated when an engine revolution speed Ne is at a predetermined engine revolution speed and vibrates the engine and the vehicle body largely, can not be suppressed. For this reason, the present invention provides an active vibration isolating support apparatus in which the roll vibration can be suppressed in the motoring state at the time of engine starting.