SYSTEM FOR RECOVERING ENERGY FROM AN EXHAUST GAS CIRCUIT

摘要

The invention relates to a system for recovering energy from an exhaust gas circuit (3) of a heat engine (1), including an exhaust gas by-pass pipe (12) that includes a heat exchanger with two compartments, and has a first manifold (14) leading into one compartment (16) and a second manifold (15) leading into the other compartment (17), said system comprising a first valve (18) installed in the exhaust circuit (3) and capable of controlling the flow of gases into each of said manifolds (14, 15), and a second valve (20) intended to control the flow of gases at the outlet of the heat exchanger (13). The main technical feature of a system for recovering energy according to the invention is that the first valve (18) can only be used in two positions, a first position wherein same seals the first manifold (14), and a second position wherein same seals the exhaust circuit (3) and only allows the exhaunt gases to flow into the first manifold (14).

主权项

1. A system for recovering energy from a gas exhaust circuit of a heat engine, comprising:
an exhaust gas bypass pipe provided with a heat exchanger having a first flow compartment and a second compartment for cooling the gases, said compartments being connected, said pipe having two inlet nozzles installed in parallel on the exhaust circuit; a first nozzle emerging in the first compartment; and a second nozzle emerging in the second compartment, the first nozzle being installed on the exhaust circuit upstream of the second nozzle, said system comprising: a first valve installed in the exhaust circuit and suitable for controlling the flow of the gases in each of said nozzles; and a second valve for controlling the flow of the gases at the outlet of the heat exchanger, wherein the first valve has only two positions, a first position for which it blocks the first nozzle and allows the flow of the exhaust gases in the second nozzle and to the outlet of said circuit, and a second position for which it blocks the exhaust circuit between the points of connection of the two nozzles to said circuit and allows the flow of the exhaust gases only in the first nozzle.