FR3039593A1 - ENERGY RECOVERY DEVICE ON HYBRID MOTOR VEHICLES - Google Patents

Abstract

The device reduces the consumption of fuel and harmful gases, while increasing the engine efficiency and also its power. It starts at the motor (1), a tee (2) will serve as a deflection in case of overpressure, which is also managed by two pressure regulators (3 and 5). An elbow (4) joins the tee (2) and the regulator (5). The compression chamber (6) increases the pressure, assisted by the exhaust duct. The regulator (7) manages the pressure; a collector (8) divides the circuit, the turbine chamber (9) recovers the energy to transform it into electricity. The liquid will be evacuated by a Y-pipe (10) that will join a capacitor (11) to lower the pressure and the temperature. A pipe (12) connects to the radiator. The device according to the invention is intended for the automotive sector, for hybrid vehicles.

Description

DESCRIPTION

The present invention relates to a device for recovering energy dissipated by heat in liquid and gaseous form, gasoline engines. To date, no energy recovery system dissipated by the coolant has been developed, and concerning current exhaust energy recovery systems, they are "immature" and recover at best, 5% of exploitable energy.

As a result, the maximum efficiency of a gasoline vehicle rarely exceeds 30%, because when the engine consumes fuel, there is: 33% (in the best conditions) in the traction of the vehicle, 31% of losses in coolant and 36% losses in exhaust gases, otherwise known as heat losses.

The device according to the invention makes it possible to remedy this disadvantage in part. It includes a bifurcation system of the coolant at the engine outlet, which overlaps the hottest parts of the exhaust through the thermal sensor to increase pressure as much as possible; it is then trapped in a compression chamber so that it can reach the appropriate pressure to rotate the two dynamos, to produce electrical energy that can either supply batteries or an electric motor. But the increase in engine efficiency is not its only strength, because it is "fed" in other heat generated by the engine, it can significantly reduce fuel consumption and especially gas harmful exhaust (except for CO2) by depleting the mixture Air / gasoline (the amount of oxidizer and fuel for combustion).

According to the particular embodiments: - The bifurcation between the engine and the device is done with two pressure regulators. - The conduits carrying the coolant must be made of stainless steel, just like the thermal sensor. - To facilitate the increase in pressure, the compression chamber is just above the thermal sensor; the chamber and the pressure regulators must be made of stainless steel in order to be able to withstand the constraints of temperature, pressure and corrosion. - The power of the dynamos are varied, but 30% of the maximum power of the vehicle is amply enough. - Two high efficiency turbines ensure the transfer of hydraulic energy into mechanics. - The conduit carries the heat transfer liquid to the radiator, it can have a capacitor to help lower the temperature and pressure of the latter.

The accompanying drawings illustrate the invention: FIG. 1 represents a view from above, the device of the invention. FIG. 2 represents an exploded view from above, the device of the invention - FIG. 3 represents a sketch of the top, a variant of this device

With reference to these drawings (FIGS. 1 and 2), the device starts just at the outlet of the heat-transfer liquid heated at the motor (1); a silicone tee (2) will serve as a junction for creating a bypass in case of overpressure in the device which is managed by two pressure regulators (3 and 5).

An elbow (4) makes it possible to make the connection between the tee (2) and the regulator (5).

The compression chamber (6) makes it possible to raise the heat transfer fluid in pressure and temperature, bonded with the collector and the exhaust line, the latter makes it possible to recover some of the calories lost during combustion by accelerating the reaction time. heating and pressure.

The regulator (7) allows the passage of the liquid at the right pressure; a collector will divide the circuit in two, the turbine chamber (9) is composed of a stainless steel or aluminum chamber, two turbines ensuring the transfer of hydraulic energy in mechanics, and two dynamos to switch to electrical energy. The liquid is evacuated by a Y-pipe (10) which will join a capacitor (11) to lower the pressure and the temperature.

With reference to this drawing (FIG. 3), the device starts at the outlet of the motor with the silicone tee (1), the liquid is irrigated towards the latter, and if the compression chamber (4) is again in overpressure, it will then be irrigated on the other channel (towards radiator / heater); the elbow ensures the connection between the tee (1) and the stainless steel pressure regulator (3), which makes it possible to trap the liquid in the stainless steel compression chamber (4) (this is the same principle as a valve anti-return valve in a pneumatic compressor), which in turn stores the liquid so that it can rise to the proper pressure to turn the turbine at the desired speed.

The stainless steel pressure regulator (5) manages this part, it blocks the circulation and the liquid can circulate only once the right pressure is reached, a copper pipe makes the connection between the latter and the collector (7) which has to divide the duct into 3 channels so that the liquid is propelled to the same level as the 3 turbines (9).

These turbines that will transfer the hydraulic energy into mechanical energy are located in a turbine chamber (8), a steel shaft can transmit the mechanical energy, the two bearings accompanied by high temperature spy joints can limit the problems of friction, the dynamo (10) will transform mechanical energy into electrical energy.

A hat-shaped guide is located just after the turbines, ensure that the liquid flows in the best conditions and limits the "plug" effect, a Y-shaped copper pipe (11) ensures flow up to at the capacitor (13), a non-return valve (12) prevents the liquid from stagnating at this level, the capacitor (13) allows the hot liquid and under pressure, to find suitable thermal and atmospheric conditions so that the car radiator is not constantly using the fan to cool the liquid.

The silicone hose (14) allows the liquid to reach the radiator.

This drawing (Figure 3) comes from the "basic prototype", that is to say that this comes from a model that will be manufactured with a limited budget and composed only of essential parts to the operation of the device that would prove that this invention works. (In case of misunderstanding on an element, or part of the device, a so-called "theoretical" file and a "practice" file are available on request, they have all the information needed to understand how it works, as well as its interests. )

Also, the pressure regulator (5) is lower than the regulator (3), so that the coolant circulates first in the devices, in case of overpressure in the latter, the liquid can return to the radiator and cool the engine if necessary to avoid overheating due to a lack of circulation of the liquid, and therefore its breakage.

The compression chamber (6) must be able to capture a maximum of heat energy from the exhaust gas by physical contact (the metal has the property of being an excellent heat transmitter).

The turbine chamber group has a small diameter inlet, to increase the pressure and a wider double outlet, to reduce it.

To have a better reliability and responsiveness of operation, the chamber (9) contains two turbines and two dynamos depending on the power of the vehicle.

The circuit is able to set up a collector to integrate a braking energy recovery system.

The device according to the invention is particularly intended for the automotive sector, and more specifically the increase in engine efficiency, as well as the reduction of harmful gases and fuel.

Claims (6)

1) Device for the recovery of energy on hybrid vehicles characterized in that it comprises a tee (2), two pressure regulators (3 and 5), a bend (4) joining, a compression chamber (6) which makes it possible to raise the coolant pressure and temperature through the imprisonment and compression of the latter, a regulator (7) ensures that the liquid flows at the appropriate pressure, the collector (8) goes allow to irrigate the liquid optimally at the turbine chamber (9), which consists of a chamber, 2 turbines and two dynamos, the evacuation will continue with a Y-pipe (10) to go to the capacitor (11) and return to the radiator via the hose (12). 2) Device according to claim 1 characterized in that the pressure regulator (5) is lower than the regulator (3), so that the coolant flows in priority in the device, and in case of overpressure in the latter, the liquid can return to the radiator and cool the engine if necessary to avoid overheating due to a lack of circulation of the liquid, and therefore its breakage. 3) Device according to claim 1 or claim 2 characterized with respect to the compression chamber (6), it can capture a maximum of heat energy from the exhaust gas by physical contact (the metal to the property to be an excellent heat transmitter) and to heat the coolant so that it reaches the desired pressure, and those, thanks to the pressure regulator (7), it is the key of this device. 4) Device according to any one of the preceding claims characterized in that the turbines chamber group has a small diameter arrival, to increase the pressure and a wider double outlet, to reduce the pressure. 5) Device according to any one of the preceding claims characterized in that the chamber (9) contains two turbines and two dynamos according to the power of the vehicle, thus providing a better reliability and responsiveness of operation. 6) Device according to any one of the preceding claims characterized in that the circuit can integrated a manifold to integrate the thermal energy recovery system braking.