Gasifier energy production device

Patent metadata

Field	Value
Publication number	US-9669696-B2
Application number	US-201415108222-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Dec 26, 2013
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A gasifier energy production device including: a gasifier device including a fuel inlet, an air inlet, and a fuel gas outlet; a heat engine including an air inlet, a fuel gas inlet, and an exhaust gases outlet; a battery; an electrical current generator, the heat engine is coupled to at least the electrical current generator and the electrical generator is coupled to the battery; and a controller such that all fuel gas produced by the gasifier device once the gasifier device produces sufficient gas to make the heat engine operate and until the heat engine has stopped is injected into the engine such that energy required at an output from the energy production device is independent of the production of fuel gas.

First claim

The invention claimed is:

1. A gasifier energy production device comprising:
an output supplying mechanical energy and/or electrical energy;
a gasifier device comprising a supply of fuel material, an air inlet, and a fuel gas outlet;
a heat engine comprising an air inlet, a fuel gas inlet, and an exhaust gas outlet;
at least one electricity storage battery;
an electricity generator;
at least one connection between an evacuation outlet of fuel gas from the gasifier device and inlet of the fuel gas to the heat engine;
the heat engine being coupled to at least the electricity generator to supply mechanical energy to the electricity generator;
the electricity generator being coupled to at least the battery;
a controller such that the at least one connection injects all fuel gas produced by the gasifier device once the gasifier device has produced sufficient gas to make the heat engine operate and until the heat engine has stopped such that energy required at an output from the energy production device is independent of the production of fuel gas, a differential between energy demand and energy obtained from a quantity of gas produced by the gasifier device being compensated by the battery that either outputs missing energy, or absorbs excess mechanical energy produced by the heat engine and converted by the electricity generator.

2. A gasifier energy production device according to claim 1 , wherein the electricity generator is controlled to operate at maximum power of the heat engine at all times for supply gas flow at a time or at maximum electrical power.

3. A gasifier energy production device according to claim 2 , wherein rotation speed of the heat engine is controlled by torque of the electricity generator such that it operates at high torque and low rotation speed.

4. A gasifier energy production device according to claim 1 , further comprising a probe at the exhaust gases outlet to determine a composition of exhaust gases, an air inlet valve in the heat engine being controlled based on the composition.

5. A gasifier energy production device according to claim 1 , wherein the controller uses an algorithm for tracking an operating point at maximum electrical power.

6. A gasifier energy production device according to claim 1 , wherein the at least one connection comprises a redirections device for redirecting the fuel gas at the outlet from the gasifier device, such that during a starting phase, the fuel gas is redirected and does not supply the heat engine until the gasifier device produces sufficient gas to supply the heat engine.

7. A gasifier energy production device according to claim 6 , further comprising means for warming up the heat engine using energy of the redirected fuel gas.

8. A gasifier energy production device according to claim 6 , further comprising a burner downstream from the redirection device, such that the redirected fuel gas is burned, a catalytic converter being provided downstream from the burner or forming the burner.

9. A gasifier energy production device according to claim 8 , wherein the catalytic converter is provided at the exhaust gases outlet from the heat engine.

10. A gasifier energy production device according to claim 4 , further comprising a tank of fuel material and a supplier for supplying a fire place of the gasifier device from the tank, the supplier being a worm screw.

11. A drive system for automobile vehicle comprising an electric motor and at least one gasifier energy production device according to claim 4 , wherein the outlet from the energy production device is connected to an electric motor and the electric motor is mechanically connected to at least one axle of the vehicle.

12. A drive system according to claim 11 , wherein the axle is driven by the electric motor alone.

13. A drive system according to claim 11 , wherein the heat engine and the electric motor are mechanically connected to a same axle, through an epicyclic gear.

14. A drive system according to claim 11 , wherein the heat engine and the electric motor are mechanically connected to different axles.

15. A drive system according to claim 13 , further comprising an electrical machine forming the electric motor and the electricity generator.

16. A drive system according to claim 12 , wherein when the vehicle has stopped running and the axle is stopped, the heat engine continues to operate to convert the fuel gas into electricity through the electricity generator.

17. A hybrid automobile vehicle comprising two axles and at least one drive system according to claim 11 , one of the axles being driven by at least the electric motor.

18. An operating method for a gasifier energy production device according to claim 4 , comprising:
a) the battery supplying energy when the gasifier energy production device starts;
b) starting the gasifier device, a redirection device redirecting the fuel gas produced so that the fuel gas does not enter the heat engine;
c) detecting when a sufficient quantity of fuel gas is produced to run the heat engine;
d) directing all fuel gas to the heat engine and starting the heat engine;
e) transforming the generated mechanical energy into electrical energy through the generator;
d) stopping the gasifier device;
e) stopping the heat engine.

19. An operating method according to claim 18 , wherein, in e), maximum electrical power is tracked by modifying torque of the electricity generator applied to the heat engine and measuring a new output electrical power.

20. An operating method according to claim 18 , wherein between b) and c), the fuel gas is used to warm up the heat engine either directly or by being burned.

21. An operating method according to claim 18 , wherein the gasifier device is started when the battery charge is below a given threshold.

22. An operating method according to claim 18 , wherein when the energy demand is zero, the gasifier device is stopped and the heat engine continues to operate to transform the fuel gas that is still being produced.

23. An operating method for the drive system according to claim 11 , comprising:
a) the battery supplying energy when the gasifier energy production device starts;
b) starting the gasifier device, a redirection device redirecting the fuel gas produced so that the fuel gas does not enter the heat engine;
c) detecting when a sufficient quantity of fuel gas is produced to run the heat engine;
d) directing all fuel gas to the heat engine and starting the heat engine;
e) transforming the generated mechanical energy into electrical energy through the generator;
d) stopping the gasifier device;
e) stopping the heat engine.

Assignees

• Commissariat Energie Atomique

Inventors

• Chatroux Daniel
• Phlippoteau Vincent

Classifications

• B60K6/445

  Differential gearing distribution type · CPC title

• B60K6/48

  Parallel type · CPC title

• F02B43/08

  Plants characterised by the engines using gaseous fuel generated in the plant from solid fuel, e.g. wood · CPC title

• Y10S903/905

  Combustion engine · CPC title

• B60K6/24 Primary

  characterised by the combustion engines · CPC title