Sango Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Kazunari Matsuura

Masahiro Shirai

Toshio Murata

Tadashi Nakagawa

Kouji Ichikawa

Keiichi Koshin

Hisashi Nishino

Yuuichi Kaido

Daichi Higuma

Toshiya Tokuda

Yuuichi Kaitou

Exhaust heat recovery apparatus for automobiles

An exhaust heat recovery device includes: a first pipe through which exhaust gas from an engine flows; a second pipe that communicates with the first pipe and bypasses the first pipe; a heat recovery unit that is disposed at an interior of the second pipe, and that exchanges heat between the exhaust gas and cooling water that circulates at an interior of the heat recovery unit, and that recovers heat of the exhaust gas; and a heat transfer suppressing mechanism that is provided at a portion connecting the first pipe with the second pipe, and that suppresses transfer of heat from the first pipe to the second pipe.

Exhaust heat recovery device

A heat exchanger comprises a plurality of heat exchange segments juxtaposed in a housing, and a plug member connected fluid-tightly to the housing, and supporting the heat exchange segments to provide a coolant or cooling medium passage in each gap between the heat exchange segments adjacent to each other. Each heat exchange segment comprises a case having an opening only on a surface of the case, at least outside of the opening being plugged fluid-tightly by the plug member, and a guide member, e.g., fin accommodated in the case, and provided with a plurality of passages allowing only gas flow in a predetermined direction, and gas intake passages and gas exhaust passages at the upstream and downstream thereof, wherein an opening of the case is provided with a gas inlet port communicated with the gas intake passage, and a gas outlet port communicated with the gas exhaust passages.

Heat exchanger, and exhaust heat recovery apparatus having the heat exchanger

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Toyota, Japan

Kazunari Matsuura