Abstract: The present invention provides a sound-absorbing material having sound absorption performance with an average sound absorption coefficient of 0.70 or more in the frequency range of 800 to 5000 Hz. The present invention provides a sound-absorbing material including: a fiber layer including a plurality of holes open to a surface thereof and having a thickness of 3 mm or more; and an inorganic material layer mainly containing a calcium-based material and having a thickness of 0.4 to 0.6 mm on the surface of the fiber layer, the holes being blind holes each penetrating through the inorganic material layer and having a bottom inside the fiber layer, each hole having a depth corresponding to 50 to 90% of the thickness of the fiber layer.

Abstract: An actuator 1 includes a housing 2, an output shaft 3 protruding from the inside of the housing 2 to the outside, a motor 4 provided in the housing 2, and a reduction mechanism 5 that connects the motor 4 with the output shaft 3. The reduction mechanism 5 includes a worm gear, in which a worm 51 provided at a front end of a drive shaft 42 protruding from a main body 43 of the motor 4 and a worm wheel 52 rotating integrally with the output shaft 3 are engaged. A spindle 41 for increasing an inertia is provided between the worm 51 of the drive shaft 42 and the motor body 43.

Abstract: An actuator 1 includes a housing 2, an output shaft 3 projecting from the inside of the housing 2 to the outside, a motor 4 provided in the housing 2, a reduction mechanism 5 which connects the motor 4 to the output shaft 3, a magnet 61 provided for rotation integrally with the output shaft 3 inside the housing 2, a Hall effect IC 62 disposed to face the magnet 61 outside the rotation locus of the magnet 61, and a circumferential wall 25 disposed to stand from the inner wall of the housing 2 and interposed between the magnet 61 and the Hall effect IC 62.

Abstract: The present invention provides a sound-absorbing material having sound absorption performance with an average sound absorption coefficient of 0.70 or more in the frequency range of 800 to 5000 Hz. The present invention provides a sound-absorbing material including: a fiber layer including a plurality of holes open to a surface thereof and having a thickness of 3 mm or more; and an inorganic material layer mainly containing a calcium-based material and having a thickness of 0.4 to 0.6 mm on the surface of the fiber layer, the holes being blind holes each penetrating through the inorganic material layer and having a bottom inside the fiber layer, each hole having a depth corresponding to 50 to 90% of the thickness of the fiber layer.

Abstract: An actuator 1 includes a housing 2, an output shaft 3 projecting from the inside of the housing 2 to the outside, a motor 4 provided in the housing 2, a reduction mechanism 5 which connects the motor 4 to the output shaft 3, a magnet 61 provided for rotation integrally with the output shaft 3 inside the housing 2, a Hall effect IC 62 disposed to face the magnet 61 outside the rotation locus of the magnet 61, and a circumferential wall 25 disposed to stand from the inner wall of the housing 2 and interposed between the magnet 61 and the Hall effect IC 62.

Abstract: An actuator 1 includes a housing 2, an output shaft 3 protruding from the inside of the housing 2 to the outside, a motor 4 provided in the housing 2, and a reduction mechanism 5 that connects the motor 4 with the output shaft 3. The reduction mechanism 5 includes a worm gear, in which a worm 51 provided at a front end of a drive shaft 42 protruding from a main body 43 of the motor 4 and a worm wheel 52 rotating integrally with the output shaft 3 are engaged. A spindle 41 for increasing an inertia is provided between the worm 51 of the drive shaft 42 and the motor body 43.

Abstract: A shaft-integrated gear includes a rotational shaft formed of a resin material; and a cylindrical gear that is formed of a metal material, wherein the cylindrical gear fits around a gear support part of the rotational shaft.

Abstract: A shaft-integrated gear includes a rotational shaft formed of a resin material; and a cylindrical gear that is formed of a metal material, wherein the cylindrical gear fits around a gear support part of the rotational shaft.

Abstract: In a structure of an additive-agent diffusion plate in an exhaust passage, the exhaust passage is an exhaust passage for an engine. The additive-agent diffusion plate includes a plurality of collision portions; and a plurality of communication portions that allow exhaust gas flowing in the exhaust passage to flow from an area upstream of the additive-agent diffusion plate to an area downstream of the additive-agent diffusion plate in an exhaust-gas flow direction. The additive-agent diffusion plate diffuses an additive agent injected into the exhaust passage, at a position upstream of an exhaust gas purification device, which is disposed in the exhaust passage, in the exhaust-gas flow direction. Each of the collision portions protrudes toward an upstream side in the exhaust-gas flow direction, and a cross section of each of the collision portions increases from the upstream side toward a downstream side of the exhaust-gas flow direction.

Abstract: A vehicle body mounting structure for an exhaust system heat exchanger is provided that enables good protection of an exhaust system heat exchanger disposed below a vehicle body floor. In the vehicle exhaust system mounting structure 10 there is an exhaust system heat exchanger 14, carrying out heat exchange between exhaust gas and engine cooling water, disposed at the bottom side of a floor tunnel 70 that is formed to a front floor panel 68. The lowermost portion of the exhaust system heat exchanger 14 in the vehicle up-down direction is positioned in the vehicle up-down direction above the lowermost portion of the body cross-member 80 of a vehicle body frame and an engine rear mount support member 90.

Abstract: An additive-agent diffusion plate structure in an exhaust passage for an engine includes: an injection port that injects an additive agent, and that is disposed so that the injected additive agent crosses the exhaust passage; and an additive-agent diffusion plate that diffuses the additive agent injected from the injection port into the exhaust passage, at a position upstream of an exhaust gas purification device disposed in the exhaust passage. The additive-agent diffusion plate includes: a bottom wall that is disposed to extend in an exhaust-gas flow direction in which exhaust gas flows; a collision portion with which the additive agent injected into the exhaust passage collides; and a passage portion that is open behind the collision portion, when the additive-agent diffusion plate is seen from a position of the injection port.

Abstract: A vehicle body mounting configuration is obtained which can properly mount an exhaust system heat exchanger on a vehicle body. The configuration includes an exhaust system heat exchanger which extends in a vehicle front-rear direction, a floor tunnel which opens downwards in a vehicle vertical direction, a body cross member which bridges wall portions of the floor tunnel, and a support portion which supports in a suspending fashion the exhaust system heat exchanger relative to the body cross member. The body cross member overlaps at an upper side in the vehicle vertical direction relative to a partition wall pipe which lies outside of a range where a cooling medium flow path is placed in a longitudinal direction, and the support portion is fixed, respectively, to the exhaust gas exhaust portion of the partition wall pipe and the body cross member.

Abstract: The invention obtains a muffler structure for a vehicle which can suppress an emission sound. In a muffler shell for a muffler for a vehicle, there are formed a peripheral joint in which an upper shell and a lower shell corresponding to a plurality of shell structure portions are joined in respective peripheral joint flanges and, and an inter-isolation chamber joint in which the upper shell and the lower shell are joined in inter-isolation chamber joint flanges and in such a manner as to partition a space positioned in an inner side of the peripheral joint into a plurality of isolation chambers and arranged in parallel in a gas flow direction.

Abstract: An exhaust gas heat recovery unit includes a plurality of heat pipes (23) each of which includes a heater-side heat pipe portion (23a) positioned on the side of a heater (21) which heats pure water using heat of exhaust gas discharged from an engine and an evaporator-side heat pipe portion (23b) positioned on the side of an evaporator (22) which evaporates the pure water, heated at the heater-side heat pipe portion (23a), using the heat of the exhaust gas. The pitch of heater-side corrugated fins (28a) on the outer periphery of the heater-side heat pipe portion (23a) is set to substantially half the pitch of evaporator-side corrugated fins (28b) on the outer periphery of the evaporator-side heat pipe portion (23b).

Abstract: A heat pipe 23 has seven heating unit side heat pipe portions 23a on the side of a heating unit 21 for heating pure water using heat of exhaust gas discharged from an engine, six evaporation unit side heat pipe portions 23b on the side of an evaporation unit 22 for evaporating the pure water heated by each heating unit side heat pipe portion 23a using heat of exhaust gas, and flow rate retardation means 4 for retarding the flow rate of the pure water flowing in the evaporation unit side heat pipe portions. The flow rate retardation means 4 is provided with a merging portion 23c that merges the pure water heated by each heating unit side heat pipe portion, on the evaporation unit side, and whose a flow path cross-sectional area is set to be larger than that of each heating unit side heat pipe portion 23a.

Abstract: A variable muffler corresponds to a muffler of an internal combustion engine including a variable valve that controls the flow of exhaust gas. The variable muffler includes a muffler body forming a muffler chamber, an inlet pipe with an opening at the muffler chamber to direct the flow of exhaust gas from the opening towards the muffler chamber, and a muffler-in pipe arranged in the muffler chamber. The muffler-in pipe includes an opening facing the opening at the muffler chamber, and into which the exhaust gas output from the opening flows in a predetermined direction. The muffler-in pipe further includes a slope inclining vertically downwards towards the opening, and extending in a direction different from the predetermined direction. By such a configuration, a muffler of an internal combustion engine having proper driving of the valve ensured can be provided.

Abstract: A silencer includes a smaller cylindrical member having a planar portion and a larger cylindrical member arranged to closely contact at least a portion of the outer circumferential surface of the smaller cylindrical member. The larger cylindrical member as seen in a direction orthogonal to its axis provides an oblate cross section having a major axis X and a minor axis Y and the smaller cylindrical member is arranged to have the planar portion traversing the major axis X of the larger cylindrical member.

Abstract: The invention obtains a muffler structure for a vehicle which can suppress an emission sound. In a muffler shell for a muffler for a vehicle, there are formed a peripheral joint in which an upper shell and a lower shell corresponding to a plurality of shell structure portions are joined in respective peripheral joint flanges and, and an inter-isolation chamber joint in which the upper shell and the lower shell are joined in inter-isolation chamber joint flanges and in such a manner as to partition a space positioned in an inner side of the peripheral joint into a plurality of isolation chambers and arranged in parallel in a gas flow direction.

Abstract: An exhaust system disposition structure for disposing an exhaust system which includes a tailpipe and a coupling member that couples the exhaust system to an exhaust manifold, with the exhaust system being disposed on a vehicle body from the coupling member to an end of the tailpipe is provided. The structure includes a support member that supports, on the vehicle body, the exhaust system from the coupling member to the tailpipe end, at one position further toward the tailpipe end than a center of gravity of the exhaust system and at, or in the vicinity of, a principal axis of inertia of the exhaust system. Thus, the position of the entire exhaust system can be easily adjusted in comparison to a configuration where the exhaust system is supported by plural support members.

Abstract: An additive-agent diffusion plate structure in an exhaust passage for an engine includes: an injection port that injects an additive agent, and that is disposed so that the injected additive agent crosses the exhaust passage; and an additive-agent diffusion plate that diffuses the additive agent injected from the injection port into the exhaust passage, at a position upstream of an exhaust gas purification device disposed in the exhaust passage. The additive-agent diffusion plate includes: a bottom wall that is disposed to extend in an exhaust-gas flow direction in which exhaust gas flows; a collision portion with which the additive agent injected into the exhaust passage collides; and a passage portion that is open behind the collision portion, when the additive-agent diffusion plate is seen from a position of the injection port.