Self-pressure-regulating compressed air engine comprising an integrated active chamber
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-005/00
F01K-013/00
B60K-016/00
F01B-029/10
F01B-017/02
F02B-021/00
F02M-031/04
F02M-031/16
F24J-002/42
출원번호
US-0823498
(2011-10-03)
등록번호
US-9045982
(2015-06-02)
우선권정보
FR-10 58037 (2010-10-05)
국제출원번호
PCT/EP2011/067212
(2011-10-03)
§371/§102 date
20130314
(20130314)
국제공개번호
WO2012/045694
(2012-04-12)
발명자
/ 주소
Negre, Guy
Negre, Cyril
출원인 / 주소
MOTOR DEVELOPMENT INTERNATIONAL S.A.
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
An engine with an active chamber, having at least one piston (2) mounted in a cylinder (1) in a sliding manner and driving a crankshaft (5) via a slider-crank device (3, 4) and operating according to a four-phase thermodynamic cycle includes: an isothermal expansion without work; a transfer—slight s
An engine with an active chamber, having at least one piston (2) mounted in a cylinder (1) in a sliding manner and driving a crankshaft (5) via a slider-crank device (3, 4) and operating according to a four-phase thermodynamic cycle includes: an isothermal expansion without work; a transfer—slight so-called quasi-isothermal expansion with work; a polytropic expansion with work; and an exhaust at ambient pressure, preferentially supplied by compressed air contained in a high-pressure storage tank (12), through a buffer capacity, called a working capacity (11), which is expanded at an average pressure, called a working pressure, in a working capacity, preferentially through a dynamic pressure-reducing device (13), wherein the active chamber is included in the engine cylinder, the cylinder volume being swept by the piston and divided into two separate parts, a first part forming the active chamber (CA) and a second part forming the expansion chamber (CD).
대표청구항▼
1. An engine with active chamber, comprising at least one cylinder (1) and one piston (2) which is mounted to slide in the cylinder (1) and which drives a crankshaft (5) by means of a conventional connecting rod-crank device (3, 4), in which the volume of the cylinder (1) swept by the piston (2) is
1. An engine with active chamber, comprising at least one cylinder (1) and one piston (2) which is mounted to slide in the cylinder (1) and which drives a crankshaft (5) by means of a conventional connecting rod-crank device (3, 4), in which the volume of the cylinder (1) swept by the piston (2) is divided into two distinct parts, a first part constituting the active chamber (CA) which is included in the cylinder and a second part constituting the expansion chamber (CD), the cylinder (1) being closed in its top part by a cylinder head (6) including at least one duct and one intake orifice (7) and at least one duct and one exhaust orifice (8), and which is arranged in such a way that, when the piston (2) is at its top dead center point, the residual volume contained between the piston (2) and the cylinder head (6) is, by construction, reduced to the very minimum gaps enabling the contactless operation between the piston and the cylinder head, and in which compressed air, or any other gas under pressure, supplied from a storage tank of compressed air, or of any other gas under pressure, is admitted into the cylinder (1) above the piston, and, under the continuous thrust of the compressed air, or any other gas under pressure, the volume of the active chamber (CA) increases while producing work, the intake of the compressed air, or any other gas under pressure, into the cylinder is blocked when the maximum volume of the active chamber (CA) is reached, and the quantity of compressed air, or any other gas under pressure, contained in said active chamber then expands while pushing back the piston over the second part of its stroke while producing work thus ensuring the expansion phase, the piston having reached its bottom dead center point, the exhaust orifice is then opened to ensure the exhaust phase while the piston rises up over all of its stroke, characterized: in that the storage tank (12) of compressed air at high pressure, or of any other gas under pressure, directly feeds the intake of the engine cylinder (1);in that the active chamber (CA) in the cylinder is filled at a constant intake pressure on each engine revolution, this intake pressure decreasing as the pressure in the storage tank (12) decreases during the emptying of this tank,in that the maximum volume of the active chamber (CA) is variable and increases progressively as the pressure in the storage tank (12) which determines said intake pressure decreases;in that means (7, 9) for opening and closing the intake of the compressed air into the active chamber (CA) make it possible not only to open the intake orifice and duct (7) substantially at the top dead center point of the stroke of the piston, but also make it possible to modify the duration and/or the angular sector of the intake, as well as the passage section of the opening;in that the maximum volume of the active chamber (CA) is dimensioned for the maximum storage pressure, then is progressively increased so that, depending on the intake pressure, on the ratio of volumes between the included active chamber (CA) and the expansion chamber (CD), the pressure at the end of expansion before the opening of the exhaust (8) is close to atmosphere pressure. 2. The engine with active chamber as claimed in claim 1, characterized in that it operates according to a thermodynamic cycle with three phases comprising: an isobaric and isothermal transfer;a polytropic expansion with work;an exhaust at ambient pressure. 3. The engine with active chamber as claimed in claim 2, characterized in that it comprises at least two cylinders of increasing cylinder size (1; 1A) each operating according to the same principle which has just been described, and characterized: in that, when the intake pressure is in its top range, corresponding for example to the top third of the values of the intake pressure, only the cylinder of smallest cylinder size is fed;in that, when the intake pressure is in an intermediate range, corresponding for example to the median third of the values of the intake pressure, only the second cylinder of larger cylinder size is fed;and in that, when the intake pressure is in its bottom range, corresponding for example to the bottom third of the values of the intake pressure, the two cylinders are fed at the same time. 4. The engine with active chamber as claimed in claim 3, characterized in that it comprises at least three cylinders, including said at least two cylinders of increasing cylinder size, by virtue of which it is possible to adjust more finely the total cylinder size used as a function of the intake pressure, by having said at least three cylinders of the engine operate in succession, jointly and/or in combination. 5. The engine with active chamber as claimed in claim 1, in its dual-energy application, characterized in that, between the storage tank (12) and the intake of the engine, there is a thermal device forming an isobaric reheater making it possible to increase, at constant pressure, the temperature of the air, or of any other gas, which passes through it and to increase the quantity of energy which can be used and is available through the fact that the compressed air, or any other gas, at constant pressure and before its introduction into the active chamber (CA), will increase its temperature and increase its volume while making it possible to increase the range of a machine equipped with the engine, in proportion to said volume increase. 6. The engine with active chamber as claimed in claim 5, in its dual-energy application, characterized in that the thermal device forming an isobaric reheater comprises a solar dish focusing into the thermal device forming an isobaric reheater to make it possible to increase the temperature of the compressed air, or of any other gas, and to increase the quantity of energy that can be used and is available through the fact that the compressed air, or any other gas, at constant pressure, and before its introduction into the active chamber (CA) will increase its temperature and increase volume while making it possible to increase the range of said machine. 7. The engine with active chamber as claimed in claim 5, characterized in that its thermodynamic cycle has four phases comprising: an increase in the isobaric temperature;an isothermal transfer;a polytropic expansion with work;an exhaust at ambient pressure. 8. The engine with active chamber as claimed in claim 5, in its stand-alone dual-energy application, characterized in that it is coupled with and drives an air compressor (19) making it possible, during its operation with an additional energy, to feed compressed air, or any other gas, to the storage tank at high pressure (12). 9. The engine with active chamber as claimed in claim 8, characterized in that it comprises a heat exchanger, air-air or other, which is positioned between the compressor (19) and the storage tank (12) so that the compressed air, or any other gas, at high pressure and at high temperature at the output of the compressor returns, in the storage tank, to a temperature close to ambient temperature. 10. The engine with active chamber as claimed in claim 9, characterized in that its thermodynamic cycle comprises six phases comprising: a polytropic compression of the ambient/atmospheric air;a cooling to ambient/atmospheric temperature for storage;an increase in the isobaric temperature;an isobaric/isothermal transfer;a polytropic expansion with work;an exhaust at ambient pressure. 11. The engine with active chamber as claimed in claim 1, characterized in that the torque and the speed of the engine are controlled by a device driven by an accelerator which controls the opening and closing of the means (9) for opening/closing the intake duct (8) which feeds compressed air, or any other gas, to the active chamber (CA) while making it possible not only to open the opening/closing means, substantially at the top dead center point, but also to modify the duration and/or the angular sector of the intake, as well as the passage section of the opening in order to determine the pressure at the end of expansion, as a function of the pressure in the storage tank (12), the quantity of compressed air, or of any other gas, admitted, the volume of the active chamber (CA) by the closing of the opening/closing means (9). 12. The engine with active chamber as claimed in claim 5, characterized in that, during operation in dual-energy mode with an additional energy, the engine comprises an electronic computer which controls the quantity of energy added as a function of the pressure of the compressed air, or of any other gas, and therefore of the weight of air, or of any other gas, introduced into the active chamber (CA). 13. The engine with active chamber as claimed in claim 1, characterized in that the engine operates according to three modes, which can be used separately or in combination, comprising: the single-energy, zero-pollution, operating mode, with the air, or any other gas, previously compressed contained in the storage tank at high pressure;the dual-energy operating mode, with the air, or any other gas, previously compressed contained in the storage tank plus the additional energy added by a thermal device forming a repeater;the stand-alone dual-energy operating mode, with the air, or any other gas, compressed in the storage tank by a compressor driven by the engine, plus the additional energy added by the thermal device forming a repeater. 14. The engine with active chamber as claimed in claim 6, characterized in that its thermodynamic cycle has four phases comprising: an increase in the isobaric temperature;an isothermal transfer;a polytropic expansion with work;an exhaust at ambient pressure. 15. The engine with active chamber as claimed in claim 6, characterized in that its thermodynamic cycle has four phases comprising: an increase in the isobaric temperature;an isothermal transfer;a polytropic expansion with work;an exhaust at ambient pressure. 16. The engine with active chamber as claimed in claim 6, characterized in that, during operation in dual-energy mode with an additional energy, the engine comprises an electronic computer which controls the quantity of energy added as a function of the pressure of the compressed air, or of any other gas, and therefore of the weight of air, or of any other gas, introduced into the active chamber (CA).
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (3)
Miyoshi,Seiji; Yamada,Hiroshi; Takami,Akihide, Control device of hydrogen engine.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.