Method and apparatus for heating an expansion machine of a waste heat recovery apparatus
US9932862B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2013 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jan 17, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01K23/065
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A waste heat recovery apparatus, for use with an internal combustion engine, includes a working fluid circuit to circulate working fluid, a boiler connected on the working fluid circuit and adapted to recover waste heat from a source to heat working fluid, an expander connected on the working fluid circuit to receive working fluid from the boiler, and, a heating jacket associated with the expander. The working fluid circuit downstream of the boiler includes a first branch connecting to an inlet of the expander and a second branch connecting to the heating jacket. A valve is connected on the working fluid circuit to selectively control working fluid flow to one of the first branch for expansion and recovering work or to the second branch to heat the expander responsive to a temperature of the working fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.