Internal combustion engine arrangement with waste heat recovery system and control process of waste heat recovery system

摘要

A waste heat recovery system carrying a working fluid in a loop includes an expander, a condenser and a pump, a first and a second line arranged in parallel in the high pressure circuit portion upstream of the expander and joining at a downstream junction point in the high pressure circuit portion. The first line includes a first heat exchanger connected to the exhaust line, and the second line includes a second heat exchanger connected to a line carrying a warm fluid. A first by-pass system prevents not fully evaporated working fluid from the first line to flow through the expander. A second by-pass system connects the second line to the low pressure circuit portion for by-passing the downstream junction point and the expander.