Power-generating system

摘要

A power-generating system includes a heat source having a temperature that goes up and down over time; a first device that undergoes electric polarization due to a temperature change of the heat source; and a second device that takes out an electric power from the first device.

主权项

1. A power-generating system comprising:
a heat source having a temperature that goes up and down over time; a first device that undergoes electric polarization due to the temperature change of the heat source; and a second device that takes out an electric power from the first device, wherein the heat source is an internal combustion engine that includes a multicylinder engine and an exhaust manifold, the exhaust manifold including a plurality of branch pipes connected to cylinders of the engine and a collection pipe that integrates the branch pipes at a downstream side of the branch pipes, the collection pipe having a downstream end portion being connected to an upstream end portion of a catalyst mount portion, wherein the first device is disposed at at least one of the branch pipes at a location upstream of both the collection pipe and the catalyst mount portion where the at least one branch pipe undergoes a periodic temperature change, wherein the first device is a pyroelectric element and/or a piezoelectric element, wherein the Curie point of the first device is −77° C. or more and 1300° C. or less, and wherein the relative dielectric constant of the first device is 1 or more.