Abstract: An inner shaft of a steering device and an outer shaft thereof are provided so as to be movable relative to each other via a movement mechanism along an axial line. The inner shaft includes a first abutting member and a second abutting member which are disposed along the axial line and which have different hardness. The outer shaft includes a torque transmitting portion which abuts either the first abutting member or the second abutting member only upon operation given to the movement mechanism, and which is capable of transmitting torque with either the one abutting member only. The movement mechanism includes a movement mechanism main body which is provided on the main pipe and which moves along the axial line.

Abstract: Provided is a connection state determination device. The connection state determination device for the breather pipe determines the connection state of a breather pipe in an internal combustion engine having a supercharger, and the breather pipe is connected between an engine body including a crank case and an intake passage on the upstream side of a compressor of the supercharger, and communicates the crank case and the intake passage. The connection state determination device includes a pipe internal pressure sensor that detects the pressure inside the breather pipe, a pulsation waveform obtaining part for obtaining pulsation due to the variation of pressure inside the breather pipe as a pulsation waveform based on the detected pressure, and a connection state determination part that determines the connection state of the breather pipe based on the pulsation waveform.

Abstract: A steering device includes a main pipe, an inner shaft supported by the main pipe so as to be rotatable, and an outer shaft into which the inner shaft is fitted and which is rotatable together with the inner shaft. The outer shaft is provided so as to be relatively movable along an axial line via a movement mechanism. The inner shaft includes a first inner shaft and a second inner shaft. The first inner shaft includes a first abutting member and a second abutting member arranged side by side along the axial line and having different hardness. The outer shaft abuts either the first abutting member or the second abutting member only upon operation given to the movement mechanism.

Abstract: A steering device includes an inner shaft and an outer shaft. The inner shaft includes an axial member provided on an axial line, a first abutting member provided on an outer circumference of the axial member, and a second abutting member disposed adjacent to the first abutting member, and having a different hardness from that of the first abutting member. An abutting member support of the axial member where the first abutting member and the second abutting member are provided is formed in a shape other than a circular shape. The outer shaft includes a torque transmitting member which abuts only either the first abutting member or the second abutting member and which is capable of transmitting torque only with the abutting member that is abutting the torque transmitting member.

Abstract: An abnormality determination apparatus for an internal combustion engine in which an intake passage upstream of a supercharger and a crankcase are connected by a breather line includes: an intake flow rate detection unit that detects an intake flow rate in the intake passage; and an abnormality determination unit that determines abnormality of the breather line. The abnormality determination unit calculates a rotation second-order component of a fluctuation waveform of the intake flow rate, accumulates a first number of times for which the rotation second-order component exceeds an upper threshold and a second number of times for which the rotation second-order component falls below a lower threshold, and determines the abnormality of the breather line by comparing an accumulated value of the first number of times and the second number of times with the number of revolutions of a crank.

Abstract: An abnormality determination device of an internal combustion engine in which a breather line connects an intake-air path positioned upstream from a forced-induction system and a crankcase includes an intake-air flow rate sensor that detects an intake air flow rate in the intake-air path, a pressure sensor that detects a pressure in the breather line, and an abnormality determination unit that determines abnormality of the breather line. The abnormality determination unit compares the pressure and a threshold for each flow rate, integrates a number of times the pressure becomes the threshold or greater, and determines abnormality of the breather line when an integrated value becomes a predetermined value or greater within a predetermined time. The abnormality determination unit calculates a weight coefficient for each flow rate and assigns weights to a number of times the pressure becomes the threshold or greater by using the weight coefficient.

Abstract: An abnormality determination apparatus for an internal combustion engine in which an intake passage upstream of a supercharger and a crankcase are connected by a breather line includes: an intake flow rate detection unit that detects an intake flow rate in the intake passage; and an abnormality determination unit that determines abnormality of the breather line. The abnormality determination unit accumulates a value calculated from a rotation second-order component of a fluctuation waveform of the intake flow rate over a predetermined period of time and determines the abnormality of the breather line when the accumulated value is less than a predetermined threshold.

Abstract: An abnormality determination device of an internal combustion engine in which a breather line connects an intake-air path positioned upstream from a forced-induction system and a crankcase includes an intake-air flow rate sensor that detects an intake air flow rate in the intake-air path, a pressure sensor that detects a pressure of the breather line, and an abnormality determination unit that determines abnormality of the breather line. The abnormality determination unit estimates an intake air resistance of the intake-air path from the pressure when the engine is under low load conditions under which the intake air flow rate is less than a predetermined value and the pressure when the engine is under high load conditions under which the intake air flow rate is the predetermined value or greater and determines abnormality of the breather line when the intake air resistance is less than a threshold.

Abstract: An abnormality assessment device includes an on-off valve that shuts an intake path on an upstream side of a connection portion of a breather line with respect to the intake path and an abnormality assessment element that assesses abnormality of the breather line. The abnormality assessment element assesses abnormality of the breather line based on a difference between an intake flow rate that is detected by an intake flow rate sensor and a target intake flow rate in a case where the on-off valve is closed.

Abstract: An internal combustion engine includes on-off valves that configure a closed space by closing an internal space of a breather line, a pump that depressurizes or pressurizes the closed space, a pressure sensor that detects a pressure of the closed space, and an abnormality assessment element that assesses abnormality of the breather line. The abnormality assessment element assesses abnormality of the breather line based on a pressure change of the closed space in a case where the closed space is depressurized or pressurized by the pump.

Abstract: An abnormality determination apparatus for an internal combustion engine in which an intake passage upstream of a supercharger and a crankcase are connected by a breather line includes: an intake flow rate detection unit that detects an intake flow rate in the intake passage; and an abnormality determination unit that determines abnormality of the breather line. The abnormality determination unit accumulates a time for which a rotation second-order component of a fluctuation waveform of the intake flow rate is equal to or more than a threshold over a predetermined period of time and determines the abnormality of the breather line when the accumulated value is less than a predetermined accumulation threshold.

Abstract: A yoke has a yoke main body portion and a thin portion. The thin portion extends from the yoke main body portion toward the shaft, and is thinner than the yoke main body portion. The front end of the shaft is a large-diameter portion that has a larger diameter than an adjacent portion. The yoke main body portion has a yoke general-diameter portion and a step portion. The yoke general-diameter portion has an inner diameter that is substantially equal to an outer diameter of the large-diameter portion. The step portion extends from an end of the yoke general-diameter portion toward an axial line, and has an inner diameter smaller than the outer diameter of the large-diameter portion. The step portion abuts a front end of the large-diameter portion. The thin portion has reduced-radius portions that have smaller radii than the outer radius of the large-diameter portion.

Abstract: According to an aspect, there is provided a steering device including a pipe, a housing, a telescopic mechanism, and a load absorbing mechanism. The load absorbing mechanism includes a first connection member connecting a hanger bracket and an EA plate to each other and a second connection member connecting a guide plate and the EA plate to each other. In a case where a forward acting load applied to the pipe has a predetermined value or greater, the load absorbing mechanism is configured so that the first connection member is slidable on the EA plate, and is configured so that the second connection member is slidable on the EA plate.

Abstract: According to an aspect, there is provided a steering device including a pipe, a housing, a telescopic mechanism, and a load absorbing mechanism. The load absorbing mechanism includes an EA plate disposed in the pipe, a guide plate disposed in a telescopic movable portion, and overlapped with the EA plate, and a connection member connecting the EA plate and the guide plate to each other. Dimensions of the load absorbing mechanism are set so that a load applied between the connection member and the EA plate is lower than a load applied between the connection member and the guide plate.

Abstract: According to an aspect, there is provided a steering device including a pipe, a housing, a telescopic mechanism, and a load absorbing mechanism. The load absorbing mechanism includes an EA plate disposed in the pipe, a guide plate overlapped with the EA plate, and a connection member which connects the EA plate and the guide plate to each other, and which is slidable with respect to the EA plate and the guide plate in a case where a forward acting load applied to the pipe has a predetermined value or greater.

Abstract: A steering device includes a main pipe, an inner shaft supported by the main pipe so as to be rotatable, and an outer shaft into which the inner shaft is fitted and which is rotatable together with the inner shaft. The outer shaft is provided so as to be relatively movable along an axial line via a movement mechanism. The inner shaft includes a first inner shaft and a second inner shaft. The first inner shaft includes a first abutting member and a second abutting member arranged side by side along the axial line and having different hardness. The outer shaft abuts either the first abutting member or the second abutting member only upon operation given to the movement mechanism.

Abstract: An inner shaft of a steering device and an outer shaft thereof are provided so as to be movable relative to each other via a movement mechanism along an axial line. The inner shaft includes a first abutting member and a second abutting member which are disposed along the axial line and which have different hardness. The outer shaft includes a torque transmitting portion which abuts either the first abutting member or the second abutting member only upon operation given to the movement mechanism, and which is capable of transmitting torque with either the one abutting member only. The movement mechanism includes a movement mechanism main body which is provided on the main pipe and which moves along the axial line.

Abstract: A steering device includes an inner shaft and an outer shaft. The inner shaft includes an axial member provided on an axial line, a first abutting member provided on an outer circumference of the axial member, and a second abutting member disposed adjacent to the first abutting member, and having a different hardness from that of the first abutting member. An abutting member support of the axial member where the first abutting member and the second abutting member are provided is formed in a shape other than a circular shape. The outer shaft includes a torque transmitting member which abuts only either the first abutting member or the second abutting member and which is capable of transmitting torque only with the abutting member that is abutting the torque transmitting member.

Abstract: Provided is a connection state determination device. The connection state determination device for the breather pipe determines the connection state of a breather pipe in an internal combustion engine having a supercharger, and the breather pipe is connected between an engine body including a crank case and an intake passage on the upstream side of a compressor of the supercharger, and communicates the crank case and the intake passage. The connection state determination device includes a pipe internal pressure sensor that detects the pressure inside the breather pipe, a pulsation waveform obtaining part for obtaining pulsation due to the variation of pressure inside the breather pipe as a pulsation waveform based on the detected pressure, and a connection state determination part that determines the connection state of the breather pipe based on the pulsation waveform.

Abstract: A yoke has a yoke main body portion and a thin portion. The thin portion extends from the yoke main body portion toward the shaft, and is thinner than the yoke main body portion. The front end of the shaft is a large-diameter portion that has a larger diameter than an adjacent portion. The yoke main body portion has a yoke general-diameter portion and a step portion. The yoke general-diameter portion has an inner diameter that is substantially equal to an outer diameter of the large-diameter portion. The step portion extends from an end of the yoke general-diameter portion toward an axial line, and has an inner diameter smaller than the outer diameter of the large-diameter portion. The step portion abuts a front end of the large-diameter portion. The thin portion has reduced-radius portions that have smaller radii than the outer radius of the large-diameter portion.