Abstract: A center-of-mass height estimation device includes a roll moment calculation unit for calculating roll moment of a sprung portion in a vehicle on the basis of bearing capacities of left and right suspensions provided on the vehicle, a lateral acceleration measurement unit for measuring lateral acceleration, which is acceleration in a width direction of the vehicle, a mass measurement unit for measuring mass of the sprung portion, a transfer function calculation unit for calculating a transfer function of the roll moment with respect to the lateral acceleration, and a center-of-mass height calculation unit for dividing the gain of the transfer function by the mass of the sprung portion to calculate a height from a roll center of the vehicle to a center of mass of the sprung portion.

Abstract: This blow-by gas system is provided with: a blow-by gas flow path through which a blow-by gas discharged from an internal combustion engine passes; and an oil separator disposed midway along the blow-by gas flow path. A downstream end of the blow-by gas flow path connects to at least one of a predetermined portion of an intake passageway and a midway portion of an air introduction passageway. The predetermined portion is a portion at which at least some of the blow-by gas that has flowed into the intake passageway flows into the air introduction passageway together with an intake air in the intake passageway.

Abstract: This convoy vehicle determination device can improve determination accuracy of a vehicle for forming a convoy. This convoy vehicle determination device, which determines convoy vehicle candidates, is provided with: an acquisition unit which acquires identification information of a third vehicle positioned in the periphery of any second vehicle from among the peripheral vehicles, read by the second vehicle, and, from the second vehicle, acquires position information of the second vehicle with respect to the third vehicle, specified by the second vehicle; and a determination unit which compares the identification information of the first vehicle and identification information of the third vehicle, and, on the basis of the results of said comparison and the position information of the second vehicle with respect to the third vehicle, determines a second vehicle from among the peripheral vehicles located in the periphery of the first vehicle as a convoy vehicle candidate.

Abstract: A segment determination device is provided with an altitude information acquisition unit that acquires altitude information about a plurality of points on a road on which a vehicle travels, a feature amount determination unit that determines a feature amount indicating gradient information about the road based on the altitude information about points including a first point ahead of the vehicle in a traveling direction of the vehicle and a second point further ahead of the first point among the plurality of points, and a segment determination unit that, in a case where the feature amount is outside of a predetermined range, determines a segment in which the first point is set as a start point and whichever of two points adjacent to the second point that is closer to the vehicle is set as an end point.

Abstract: An upper member of a steel piston has a chemical composition which consists of, in mass %, C: 0.15 to 0.30%, Si: 0.02 to 1.00%, Mn: 0.20 to 0.80%, P: 0.020% or less, S: 0.028% or less, Cr: 0.80 to 1.50%, Mo: 0.08 to 0.40%, V: 0.10 to 0.40%, Al: 0.005 to 0.060%, N: 0.0150% or less, O: 0.0030% or less, and the balance: Fe and impurities, and satisfies Formula (1) and Formula (2), in which, at a cross section parallel to the axial direction of the upper member, the number of Mn sulfides is 100.0 per mm2 or less, the number of coarse Mn sulfides having an equivalent circular diameter of 3.0 ?m or more is within a range of 1.0 to 10.0 per mm2, and the number of oxides is 15.0 per mm2 or less. 0.42?Mo+3V?1.50??(1) V/Mo?0.

Abstract: Provided are an exhaust purification device and an exhaust purification method which can achieve improved fuel efficiency. The exhaust purification device (100) is equipped with: a DOC (5) for occluding hydrocarbons in an exhaust gas; a DPF (6) that is provided downstream from the DOC (5) and is for trapping particulate matter in the exhaust gas; and an ECU (10) for determining, in accordance with the amount of occluded hydrocarbons in the DOC (5), a start time for a regeneration process for removing particulate matter accumulated in the DPF (6).

Abstract: This convoy vehicle determination device can efficiently form convoys. The convoy vehicle determination device, which determines a second vehicle for forming a convoy with a first vehicle, is provided with a storage unit which stores characteristic information of a third vehicle different from the first vehicle, and a vehicle detection unit which, from peripheral vehicles present in the periphery of the first vehicle, detects, as candidates for a second vehicle, vehicles having the same characteristic information as the characteristic information stored in the storage unit. For example, in the storage unit, characteristic information of the third vehicle is stored associated with vehicle information about the first vehicle.

Abstract: An exhaust purification unit includes: a connecting pipe transmitting exhaust gas to a selective reduction catalyst (SCR); a urea water injection valve arranged to face an exhaust upstream end of the connecting pipe and injecting urea water into the connecting pipe; a mixer chamber forming a flow path along which exhaust gas flows from an exhaust downstream end of a front stage casing and turns back to the exhaust upstream end of the connecting pipe; and a flow adjustment member provided in the mixer chamber, being a member having a truncated-cone shape which extends from a vicinity of the injection opening of the urea water injection valve towards the connecting pipe with a diameter thereof gradually increasing, in which a plurality of small holes is formed, and in which a claw that guides the exhaust gas towards the exhaust downstream-side is provided for each of the plurality of small holes.

Abstract: Provided is a steering assistance device 1, wherein and a demarcation line detection unit 100 detects left and right lane demarcation lines for a lane in which a vehicle is travelingtravels. An assistance unit 11 performs steering assistance for of the vehicle so that the vehicle travels parallel to the left and right lane demarcation lines. If the vehicle is between the left and right lane demarcation lines and the angle formed by the a direction of travel of the vehicle and a line along the center between the left and right lane demarcation lines is equal to or less than a prescribed angle, a steering control unit 102 stops the steering assistance for of the vehicle by the assistance unit 11.

Abstract: Provided is an automatic transmission which can suppress increase in size. The automatic transmission includes: a transmission mechanism (40) which is disposed in a transmission mechanism storage chamber (4) and has a plurality of transmission elements; a clutch (30) which is disposed in a clutch storage chamber (3), and connects and disconnects power delivery from a driving source to the transmission mechanism (40); and a first control unit (60) which stores first hydraulic control valves (62, 63) that control the transmission mechanism (40), wherein the first control unit (60) is disposed in the clutch storage chamber (3).

Abstract: This information providing device for a vehicle can improve fuel efficiency. The information providing device for a vehicle is provided with: a determination unit which determines whether or not an outside vehicle, which does not belong to a convoy, has cut into an inter-vehicle region, which is the region between vehicles traveling in convoy continuously in the longitudinal direction; an information generation unit which, if the determination unit has determined that an outside vehicle has cut in, generates cut-in handling information for handling the outside vehicle that has cut in; and an information providing control execution unit which performs control for providing the outside vehicle with the cut-in handling information generated by the information generation unit.

Abstract: A urea water spraying device 20 is provided with: a urea water spraying nozzle 22 for spraying urea water into an exhaust passageway 3 of an engine 2; an assist gas spraying nozzle 23 for spraying an assist gas for promoting atomization of the urea water that has been sprayed by suctioning the urea water sprayed from the urea water spraying nozzle 22 and blowing the urea water into the exhaust passageway 3; and an assist gas supply passageway 27 for supplying the assist gas spraying nozzle 23 with exhaust passing through the exhaust passageway 3 as the assist gas.

Abstract: A suspension device according to one embodiment of the present disclosure is equipped with: an upper arm; a lower arm; a leaf spring positioned so as to extend in the vehicle widthwise direction in a manner such that an end section thereof is provided on the lower arm; a first bracket configured in a manner such that a shock absorber connected to the lower arm is connected to the outside of a side member in the vehicle widthwise direction; an upper bushing capable of transmitting force between the leaf spring and a suspension cross member; and a second bracket which is independent from the first bracket and is positioned below the side member between the side member and the leaf spring so as to be capable of transmitting the elastic force of the leaf spring to the side member via the upper bushing.

Abstract: Provided are a travel control device that enhance safety while enabling smooth overtaking of a vehicle from tracking travel. This travel control device is equipped with a direction indication determination unit, a travel control unit that performs control to switch travel of the vehicle between tracking travel whereby the vehicle is made to travel by tracking the preceding vehicle and propulsion travel whereby the vehicle is made to travel so as to match the speed of the vehicle to a target speed, and an inter-vehicle distance detection unit that detects the inter-vehicle distance in tracking travel between the vehicle and the preceding vehicle. In cases in which, during tracking travel, it is determined that direction indication of vehicle has been activated and the inter-vehicle distance exceeds a prescribed distance, the travel control unit switches travel of the vehicle from tracking travel to propulsion travel.

Abstract: A lane maintaining assistance device 1 is provided with the following: a first assistance unit that performs steering assistance of a vehicle by hydraulic pressure; a second assistance unit that performs steering assistance of the vehicle using a motor; and a steering assistance control unit 83 that reduces the steering assistance amount of the first assistance unit and starts steering assistance by the second assistance unit if the vehicle is determined to have entered a curve on the basis of a captured image in which a portion of the lane which is forward in the vehicle advancing-direction is captured.

Abstract: This vehicle control device 10 is provided with: a current gear stage selection unit 13 which selects a current gear stage, which is the gear stage of the vehicle in the present travel state; a travel segment determination unit 15 which determines the next travel segment forwards in the direction of travel of the vehicle V; and a shift control unit 17 which, in the case that the current gear stage selection unit 13 has newly selected a target gear stage lower than the current gear stage during travel of the vehicle V in the current gear stage in the current travel segment, if the next travel segment can be traveled in the current gear stage and the amount the vehicle V will lose speed after traveling the current travel segment is less than or equal to a prescribed threshold value, controls shifting of the gear stage such that downshifting from the current gear stage to the target gear stage is suppressed and the current gear stage is maintained.

Abstract: A vehicle speed control device 1 includes a lane detection unit 120 configured to detect a road outside line of a lane on which a host vehicle V is traveling, a target detection unit 121 configured to detect a target that is present outside the road outside line, and a speed control unit 123 configured to control a speed of the host vehicle V such that the host vehicle V passes a lateral side of the target at a speed lower than a speed of the host vehicle V when the target has been detected. After the host vehicle V has passed the lateral side of the target, the speed control unit 123 accelerates the host vehicle V up to the speed when the target has been detected.

Abstract: A vehicle control device controls operation of a vehicle provided with a transmission having a direct gear and normal gears including an overdrive gear having a lower gear ratio than the direct gear. The device includes a travel segment determination unit which determines a forward travel segment having a different road slope from a current travel segment, a current gear position selection unit that selects a current gear position in accordance with a shift pattern, a forward gear position selection unit that selects a forward gear position based on a travel resistance of the vehicle in the forward travel segment, and a shift control unit that maintains a gear position as the direct gear while the vehicle travels in the forward travel segment, when a gear position of the transmission in the current travel segment is the overdrive gear and the forward gear position is the direct gear.

Abstract: Provided are a travel control device, a vehicle, and a travel control method that ensure safety in cases of a possible lane departure. This travel control device is equipped with: a travel control unit that switches between and executes a constant speed travel control for causing a vehicle 1 to travel at a target speed and a coasting control for causing the vehicle to travel by inertia; and a switching control unit that, in cases in which it has been determined by a lane departure warning unit that there is a risk that the vehicle will depart from the travel lane while executing the constant speed travel control or the coasting control, controls the travel control unit to execute the constant speed travel control without executing the coasting control for a prescribed period of time.

Abstract: This degradation diagnosis device for an exhaust purification system makes it possible to discover degradation of a constituting component in an exhaust purification system at an early stage. The degradation diagnosis device for an exhaust purification system that purifies exhaust gas discharged from an internal combustion engine into an exhaust pipe is provided with: a degradation degree estimation unit that estimates the degree of degradation due to corrosion of a constituting component in the exhaust purification system based on the temperature of exhaust gas and the amount of a reducing agent injected into the exhaust pipe; a determination unit that determines whether the degradation degree estimated by the degradation degree estimation unit exceeds a predetermined threshold; and an output unit that outputs the result of determination made by the determination unit.