Abstract: A cooling system includes a cooling device and an electronic control device for controlling the cooling device. The cooling device has a rotating component for delivering cooling medium and a drive source for controlling the rotating component. The electronic control device stores diagnosis reference information, which indicates an actual rotation speed acceptable range when an actual rotation speed of the drive source is apart from an instructed rotation speed of the drive source. The actual rotation speed acceptable range is an acceptable range of the actual rotation speed. The acceptable range changes according to the instructed rotation speed and a voltage value applied to the drive source. The electronic control device obtains the acceptable range based on the diagnosis reference information to determine whether the cooling device is in a normal state.

Abstract: This thermostat abnormality determining device includes a cooling water temperature sensor, an estimated temperature calculating unit and a determining unit. The cooling water temperature sensor detects the temperature of cooling water that cools an engine. The estimated temperature calculating unit calculates an estimated temperature, which is an estimated value of the temperature of the cooling water. The determining unit determines if the thermostat has become stuck open after warming-up of the engine is complete.

Abstract: Provided is an articulated bus including a front vehicle including a steering wheel and a rear wheel positioned on a rear side of the steering wheel in a front-rear direction of a vehicle, a rear vehicle disposed on a rear side of the front vehicle in the front-rear direction of the vehicle and mounted with an engine, an articulating portion that swingably connects the front vehicle and the rear vehicle to each other, and a hybrid system including an electric generator that functions as an electric motor and a generator, and an HV battery that stores electric energy generated by the electric generator and supplies electric energy to the electric generator, in which the HV battery is disposed on a roof of the front vehicle.

Abstract: The burner includes a first tube portion having a tube end including an ejection port and a second tube portion extending toward the ejection port in the first tube portion. The combustion gas generated by combusting air-fuel mixture is ejected from the ejection port. The second tube portion includes a heat exchanging portion that vaporizes liquid fuel with combustion heat of the combustion chamber and supplies the vaporized fuel to the premixing chamber. The outer surface of the second tube portion functions as a heat receiving surface of the heat exchanging portion. A fuel supply section of the burner is configured to vaporize liquid fuel and supply the vaporized fuel to the premixing chamber, and supply liquid fuel to the heat exchanging portion.

Abstract: Disclosed is a water ingress preventive structure for a tailpipe which discharges exhaust gas outside of a vehicle at a terminal of an exhaust passage system. A curved shape is imparted to the tailpipe. A partition is mounted on an inner periphery of a curved portion outward of a curved direction so as to be gradually spaced apart from the inner periphery toward downstream in a direction of flow of the exhaust gas. Thus, a dead end portion is defined by the partition and the inner periphery of the curved portion outward of the curved direction.

Abstract: A vehicle frame structure includes: a pair of main side rails extending in a vehicle front-rear direction and facing each other; and an extension side rail connected to a front portion of the main side rail in the vehicle front-rear direction and extending in the vehicle front-rear direction. The main side rail includes a main side rail body having a substantially C-shaped cross-section and the extension side rail includes an extension side rail body having a substantially Z-shaped cross-section. A part of a front end surface of the main side rail body and a part of a rear end surface of the extension side rail body face each other in the vehicle front-rear direction.

Abstract: A vehicle seat assembly includes a backrest, a seat including a seat surface, and a partition. The seat is movable between a seat folded position in which the seat surface is disposed along a front surface of the backrest and a seat unfolded position in which the seat surface faces up. The partition to be disposed adjacent to a side surface of the backrest includes a fixing portion and a movable portion. The fixing portion includes a base portion that extends along the side surface and a projecting portion projecting from the base portion farther than the front surface. The movable portion is movable between a folded position adjacent to the base portion and the front surface and an unfolded position away from the base portion and the front surface. The movable portion includes an armrest surface that faces up when the movable portion is in the unfolded position.

Abstract: A urea SCR system includes a tank that stores urea water, an injector that injects urea water to exhaust gas, a connection passage that connects the tank and the injector, an electric pump that is arranged at the connection passage and delivers urea water from the tank toward the injector or from the injector toward the tank, and a control device that controls the electric pump and the injector. The control device executes a suction-back operation for driving the electric pump so that urea water contained in the injector is suctioned back to the tank. Further, the control device determines whether or not the injector is stuck closed.

Abstract: Disclosed is an intake joint structure capable of blocking backflow of lubricating oil 18 at a connection position between an air inlet 12 of a turbocharger and a suction pipe 24. A backflow-preventive plate 25 is integrally molded to have a cylindrical portion 25a fitted over the air inlet 12 and a tapered portion 25b curved inward from an upstream end of the cylindrical portion 25a and converged downstream to provide an open end. A downstream end 24a of a suction pipe 24 is molded by soft material over a predetermined range using exchange blow molding. The cylindrical portion 25a of the backflow-preventive plate 25 is fitted over the air inlet 12 through a grommet 26 (first soft layer) and the downstream end 24a of the suction pipe 24 is fitted over the cylindrical portion 25a and is banded by a hose band 27.

Abstract: A vehicular air supply system includes: a first air operation mechanism which is operated at an air pressure of a first pressure value or less; a second air operation mechanism which is operated at an air pressure of a second pressure value or less, the second pressure value being lower than the first pressure value; a compressed air generator which generates compressed air to be supplied to the first air operation mechanism and the second air operation mechanism; and a first discharge air supply unit which supplies air discharged from the first air operation mechanism to the second air operation mechanism when a pressure value of the air discharged from the first air operation mechanism is higher than a pressure value of the air supplied from the compressed air generator to the second air operation mechanism.

Abstract: A vertically extending air intake duct 1 on a rear of a cab 2 in a delivery vehicle to take in ambient air for an engine through an air intake 3 has a duct body 4 as outer shell with the intake 3 on an upper portion, a side branch section 5 on a lower portion of the body 4 and having upper and lower ends opened in the body 4 and outside, respectively, a mesh member 6 extending over the intake 3 to collect rainwater, a louver 7 for covering the member 6 and the intake 3 to prevent intrusion of matter other than ambient air, and a drip channel or bead 8 on an inner wall of the body 4 and just below the member 6 to capture and guide rainwater flowing down on the inner wall to the upper end of the section 5.

Abstract: A lattice board is obliquely arranged in a bent portion halfway in an exhaust pipe where exhaust gas flows curvedly so as to bisect an angle made by inflow and outflow directions the exhaust gas entered upstream of and discharged downstream of the bent portion, respectively. An injector is arranged in the outflow direction of the exhaust gas to inject urea water to an entry side of the lattice board such that flow passage walls of the lattice board on which hit is the exhaust gas from upstream has rear surfaces on which hit is a spray of urea water from the injector.

Abstract: A method for manufacturing a propeller shaft comprising: a shaft portion of a circular tube shape; and a joint assembly to be joined to a transfer gear box side or a differential gear box side of the shaft portion, the joint assembly comprising a shaft-side joint to be joined to the shaft portion and an other-member-side joint to be coupled to a transfer gear box or to a differential gear box, the method having: a press fitting step of pressing the shaft-side joint of the joint assembly into the shaft portion, in a state in which the shaft-side joint and the other-member-side joint have been assembled into the joint assembly; and a welding step of welding the shaft portion and the joint assembly, after the press fitting step.

Abstract: A method for manufacturing a rear axle includes: a brake flange press-fitting step of press-fitting a brake flange to an outer peripheral surface of a rear axle housing; a brake flange welding step of welding the rear axle housing and the brake flange; an axle end press-fitting step of press-fitting an axle end to an inner peripheral surface of an end portion of the rear axle housing; and an axle end welding step of welding the rear axle housing and the axle end.