Abstract: An exhaust heat recovery device comprises an exhaust pipe, a shell member, a heat exchange portion, a guide portion, and a valve. An exhaust gas downstream end that is a downstream end along the flow path for exhaust gases in the exhaust pipe is disposed in the downstream side of a downstream-side end portion of the heat exchanger along the flow path for exhaust gases in the exhaust pipe. The guide portion comprises a partition wall portion that is a portion from the exhaust gas downstream end in the exhaust pipe to the downstream-side end portion of the heat exchanger in the exhaust pipe, and a guide member disposed so as to at least partially cover a radially outside of the partition wall portion in a manner so as to have an interspace between the partition wall portion and the guide member.

Abstract: In an exhaust heat recovery device, exhaust gas flows out from a heat exchange outflow port into a heat exchange passage. The exhaust gas having flowed out into the heat exchange passage flows in a radial direction from an inner side to an outer side of a heat exchanger to reach a second heat exchange passage from a first heat exchange passage. A heat exchange is performed in the heat exchanger while the exhaust gas flows.

Abstract: An exhaust gas heat recovery device of the present invention recovers heat of an exhaust gas from an internal combustion engine. The exhaust gas heat recovery device includes an exhaust pipe that leads the exhaust gas from an upstream side to a downstream side, a cylindrical shell that covers an outside of the exhaust pipe, and an exhaust gas heat recovery section that is interposed between the exhaust pipe and the cylindrical shell and that performs heat exchange between the exhaust gas and a heat exchange medium. The exhaust gas heat recovery section includes a stacked body that is composed by stacking a plurality of jacket each having a heat exchange medium conduit provided thereinside. In the stacked body, the respective heat exchange medium conduits in the plurality of jacket parts are serially connected to each other.

Abstract: To provide a valve device which can maintain the engagement relation between a rod mechanism and a valve mechanism even when the range of advance/retraction of the rod mechanism increases, as well as can achieve downsizing of the entire valve device. In a valve device 1, a pressing rod 215 has a first driving surface 217 which remains in contact with a tip portion 312 from a position away from a rotation axis Axb to at least a position closest to the rotation axis Axb, and a second driving surface 218 which, after the contact relation between the tip portion 312 and the first driving surface 217 is dissolved, remains in contact with the tip portion 312 to a position past the rotation axis Axb.

Abstract: A heat exchanger allows efficient heat exchange between a first fluid and a second fluid which flows inside the heat exchanger. A heat exchanger includes a heat exchanger main body housed inside a case where a first fluid flows and which houses a second fluid therein. The heat exchanger main body has a plurality of first passages such that the first fluid flows across the inside of the heat exchanger main body. In a side view from one direction, the heat exchanger main body has a shape that is left-right symmetric about the central axis of the case and of which the upstream side protrudes farther in the upstream direction toward the center. The first passages extend parallel to the central axis of the case, and are formed to be longer as they are disposed closer to the center of the heat exchanger main body.

Abstract: An exhaust heat recovery device according to one aspect of the present invention comprises an exhaust pipe, a branch port, a heat exchange part, an exhaust port, an opening and closing unit, and a shell member. The shell member comprises an intersecting plane intersecting a virtual ray that extends from an end part of an outlet of the exhaust pipe on a side of the exhaust port, the end part serving as a starting point, and the virtual ray being inclined outwardly at an angle of 7° with respect to an axial direction of the exhaust pipe, and the intersecting plane forms an angle of 90° to 97° with respect to the virtual ray. The exhaust port is positioned between the outlet and the intersecting plane in the axial direction.

Abstract: In an exhaust heat recovery device, exhaust gas flows out from a heat exchange outflow port into a heat exchange passage, the exhaust gas having flowed out into the heat exchange passage flows in a radial direction from an inner side to an outer side of a heat exchanger to reach a second heat exchange passage from a first heat exchange passage, and a heat exchange is performed in the heat exchanger while the exhaust gas flows.

Abstract: An exhaust device includes: an exhaust manifold, an upstream-side cone of a catalyst, an exhaust gas sensor, an outer shell, and a sensor chamber. Between the upstream-side cone and the outer shell, an inflow channel is formed. The inflow channel has an opening that opens inside the exhaust manifold so as to communicate with the sensor chamber.

Abstract: A thermoelectric generator includes a thermoelectric element and a casing to house the thermoelectric element, the casing including a first casing member and a second casing member to house the thermoelectric element so as to pressingly hold the thermoelectric element in between the first and second casing members, wherein a rib is formed around at least one of a surface of the first casing member and a surface of the second casing member, the surfaces pressingly holding the thermoelectric element therebetween while the first casing member and the second casing member house the thermoelectric element therein.

Abstract: An exhaust gas heat recovery device of the present invention recovers heat of an exhaust gas from an internal combustion engine. The exhaust gas heat recovery device includes an exhaust pipe that leads the exhaust gas from an upstream side to a downstream side, a cylindrical shell that covers an outside of the exhaust pipe, and an exhaust gas heat recovery section that is interposed between the exhaust pipe and the cylindrical shell and that performs heat exchange between the exhaust gas and a heat exchange medium. The exhaust gas heat recovery section includes a stacked body that is composed by stacking a plurality of jacket each having a heat exchange medium conduit provided thereinside. In the stacked body, the respective heat exchange medium conduits in the plurality of jacket parts are serially connected to each other.

Abstract: An exhaust manifold to be connected to an internal combustion engine with a plurality of exhaust ports in the present invention includes a first upper shell member, a second upper shell member, and a lower shell member. The first upper shell member and the lower shell member are superposed on each other to thereby form a first flow passage to be connected to at least one exhaust port out of the plurality of exhaust ports. The second upper shell member is superposed on the lower shell member with the first upper shell member sandwiched therebetween such that at least a part of the first upper shell member is exposed, to thereby form a second flow passage to be connected to another at least one exhaust port out of the plurality of exhaust ports.

Abstract: An exhaust device includes: an exhaust manifold, an upstream-side cone of a catalyst, an exhaust gas sensor, an outer shell, and a sensor chamber. Between the upstream-side cone and the outer shell, an inflow channel is formed. The inflow channel has an opening that opens inside the exhaust manifold so as to communicate with the sensor chamber.

Abstract: An exhaust manifold to be connected to an internal combustion engine with a plurality of exhaust ports in the present invention includes a first upper shell member, a second upper shell member, and a lower shell member. The first upper shell member and the lower shell member are superposed on each other to thereby form a first flow passage to be connected to at least one exhaust port out of the plurality of exhaust ports. The second upper shell member is superposed on the lower shell member with the first upper shell member sandwiched therebetween such that at least a part of the first upper shell member is exposed, to thereby form a second flow passage to be connected to another at least one exhaust port out of the plurality of exhaust ports.