Exhaust heat recovery apparatus
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHiroshi Yaguchi, Daisaku Sawada
Life of this patent
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Abstract
An exhaust heat recovery apparatus includes a first piston; a second piston; a first cylinder in which the first piston reciprocates; a second cylinder in which the second piston reciprocates; and a heat exchanger. The heat exchanger includes a heater that is independently shiftable with respect to at least one of the first cylinder and the second cylinder, and has one end portion arranged at a side of the first cylinder and receiving heat from heat medium, a regenerator that is arranged at a side of another end portion of the heater, and a cooler that has one end portion arranged at a side of the regenerator and another end portion arranged at a side of the second cylinder.
Claims6
An exhaust heat recovery apparatus comprising:
- a first piston;
- a second piston;
- a high-temperature cylinder in which the first piston reciprocates;
- a low-temperature cylinder in which the second piston reciprocates, a central axis of the high-temperature cylinder being approximately parallel to a central axis of the low-temperature cylinder, and the high-temperature cylinder and the low-temperature cylinder being positioned approximately orthogonal to a crankshaft and constituting an α-type inline two-cylinder stirling engine;
- and
- a heat exchanger including a heater, a regenerator and a cooler, where
- the heater having an approximately U-shape, one end portion being secured to a side of the high-temperature cylinder, and the other end portion being arranged to a side of the regenerator,
- the regenerator having one end portion being arranged to a side of the heater, and the other end portion being arranged to a side of the cooler,
- the cooler having one end portion being arranged to a side of the regenerator, and the other end portion being secured to the low-temperature cylinder, heat medium flowing a direction approximately parallel to the crankshaft, wherein
- the regenerator is shiftable along a regenerator-side end face of the cooler with respect to a direction approximately orthogonal to a central axis of the low-temperature cylinder and a direction pointing from the high-temperature cylinder to the low-temperature cylinder.
The exhaust heat recovery apparatus comprising:
- a first piston;
- a second piston;
- a high-temperature cylinder in which the first piston reciprocates;
- a low-temperature cylinder in which the second piston reciprocates, a central axis of the high-temperature cylinder being approximately parallel to a central axis of the low-temperature cylinder, and the high-temperature cylinder and the low-temperature cylinder being positioned approximately orthogonal to a crankshaft and constituting an α-type inline two-cylinder stirling engine;
- and
- a heat exchanger including a heater, a regenerator and a cooler, where
- the heater having an approximately U-shape, one end portion being secured to a side of the high-temperature cylinder, and the other end portion being arranged to a side of the regenerator,
- the regenerator having one end portion being arranged to a side of the heater, and the other end portion being arranged to a side of the cooler,
- the cooler having one end portion being arranged to a side of the regenerator, and the other end portion being secured to the low-temperature cylinder, heat medium flowing a direction approximately parallel to the crankshaft, wherein
- a regenerator-side end face of the cooler is inclined to a predetermined inclination angle to a deforming direction of the heater due to heat expansion, and the regenerator is shiftable along a regenerator-side end face of the cooler with respect to a direction pointing from the high-temperature cylinder to the low-temperature cylinder.
Dependencies are inferred from the claim text.