Method for supplying an internal combustion engine with conditioned combustion gas, device for carrying out said method, method for determining the quantities of pollutants in the exhaust gases of an
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01L-003/26
G01L-003/00
G01L-005/13
G01M-015/00
출원번호
US-0432393
(2001-11-22)
우선권정보
AT-GM863/2000(2000-11-22)
국제출원번호
PCT/AT01/000371
(2001-11-22)
§371/§102 date
20031110
(20031110)
국제공개번호
WO02/042730
(2002-05-30)
발명자
/ 주소
Erlach,Hans
Simperl,Johann
출원인 / 주소
AVL List GmbH
대리인 / 주소
Dykema Gossett PLLC
인용정보
피인용 횟수 :
2인용 특허 :
4
초록▼
The invention relates to a method for supplying an internal combustion engine with conditioned combustion gas, involving the supply of humidity and/or temperature-conditioned combustion gas. The aim of this method is to largely enable the combustion air to be reliably and constantly conditioned even
The invention relates to a method for supplying an internal combustion engine with conditioned combustion gas, involving the supply of humidity and/or temperature-conditioned combustion gas. The aim of this method is to largely enable the combustion air to be reliably and constantly conditioned even in dynamic operating conditions. To this end, an essentially constant and fully conditioned quantity of combustion gas is provided at each instant, the quantity corresponding to at least the maximum quantity required by the respective internal combustion engine. The invention also relates to a method for determining the quantities of pollutants in the exhaust gases of an internal combustion engine by diluting the exhaust gases using a diluent gas of a known composition. In order to enable the exhaust gases to be diluted in a precisely defined manner, and thus to precisely determine the quantities of pollutants, simply and reliably, an essentially constant and fully conditioned quantity of humidity and/or temperature-conditioned combustion gas is supplied at each instant, the quantity corresponding to at least the maximum quantity required by the respective internal combustion engine, and the exhaust gases are diluted with the quantity of combustion gas which is not used by the internal combustion engine. The invention also relates to devices for carrying out the two methods cited, each comprising a supply line (15) to the internal combustion engine (1), for the humidity and/or temperature-conditioned combustion gas, at least one measuring point (30) for determining the concentration of pollutants, and a determination device (32, 33; 41, 42) for the flow of a gas, said determination device comprising a passage (15) for a diluent gas of a known composition. the devices are characterized in that the supply line or supply passage (15) is designed for at least the maximum quantity of combustion gas required by the respective internal combustion engine (1), and a suction pipe (2) which can be connected to the internal combustion engine (1) branches off from the supply line (15).
대표청구항▼
The invention claimed is: 1. A device for supplying conditioned combustion gas to an internal combustion engine comprising a supply line leading to the internal combustion engine for humidity and/or temperature-conditioned combustion gas, wherein the supply line is capable of conveying the maximum
The invention claimed is: 1. A device for supplying conditioned combustion gas to an internal combustion engine comprising a supply line leading to the internal combustion engine for humidity and/or temperature-conditioned combustion gas, wherein the supply line is capable of conveying the maximum quantity of combustion gas required by the internal combustion engine per unit of time when operating at full capacity, an intake line which extends from said supply line for delivering said conditioned combustion air to said internal combustion engine at a branching off point. 2. A device according to claim 1, wherein an exhaust gas line, connectable to the internal combustion engine, joins the supply line downstream from a branching-off point of the intake line at a merging point. 3. A device according to claim 2, including elements for the adjustment of a pressure differential in the range between 3.5 and 5 mbar which are disposed between the branching-off point of the intake line and the merging point of the exhaust gas line with the supply line. 4. A device according to claim 3, including devices to ensure a minimum flow rate between the branching-off point of the intake line and the merging point of the exhaust gas line, at least corresponding to the diffusion rate of exhaust gas in the conditioned combustion gas. 5. A device according to claim 1, including devices for adjustment and control of the temperature and/or humidity provided upstream from the branching-off point of the intake line in the supply line leading to the internal combustion engine including gas coolers, mist eliminators, gas heaters and vapor delivery lines. 6. A device according to claim 2, including a gas-moving device disposed upstream from a branching-off point of the intake line and a control device downstream from a merging point of the exhaust gas line (3) for the gas flow. 7. A device according to claim 2, including a control device for the gas flow is provided upstream from a branching-off point of the intake line and a gas-moving device is provided downstream from the merging point of the exhaust gas line. 8. A device according to claim 7, including at least one heat exchanger between the internal combustion engine and the gas-moving device. 9. A device according to claim 8, wherein the control device for the gas flow is a butterfly valve. 10. A device according to claim 9, including one precision control valve parallel to the butterfly valves. 11. A device according to claim 10, including a gas-moving device between the branching-off point of the intake line and the merging point of the exhaust gas line. 12. A device according to claim 11, including devices for the laminarization of the flow in the supply line. 13. A device according to claim 12, including a shock drag and/or a muffler in the supply line between the branching-off point of the intake line and the merging point of the exhaust gas line. 14. A device according to claim 13, including at least one of the gas-moving devices is in controlled communication with the opposite control device, relative to the internal combustion engine, for the gas flow. 15. A device according to claim 14, wherein the moving capacity of the gas-moving device is adjustable dependent on the position of the control device disposed on the opposite side. 16. A device according to claim 15, wherein the distance between the branching-off point of the intake line and the merging point of the exhaust gas line corresponds substantially to the distance between the air filter intake and the end of the muffler system of the vehicle whose internal combustion engine is supplied with conditioned combustion gas. 17. A device according to claim 16, wherein a closed space is provided to receive the internal combustion engine and whereby said closed space is connected to the section of the supply line between the branching-off point of the intake line and the merging point of the exhaust gas line. 18. A device according to claim 16, wherein a closed space is provided to receive the internal combustion engine in the section between the branching-off point of the intake line and the merging point of the exhaust gas line. 19. A method of supplying conditioned combustion gas to an internal combustion engine which, when operating at full capacity, consumes a certain maximum quantity of conditioned combustion gas per unit of time, comprising the step of continuously supplying at least said certain maximum quantity of conditioned combustion gas per unit of time for delivery to said internal combustion engine during operation of said internal combustion engine. 20. A method according to claim 19, comprising delivering a required quantity of conditioned combustion gas per unit of time to said internal combustion engine from at least said certain maximum quantity of conditioned combustion gas per unit of time, and wherein a remainder quantity of conditioned combustion gas is mixed with exhaust gas emitted by said internal combustion engine to form an exhaust gas mixture downstream of said internal combustion engine. 21. A method according to claim 20, including a step of applying negative pressure to said exhaust gas mixture to assist in downstream flow. 22. A method according to claim 20, comprising the step of increasing the pressure of said required quantity of conditioned combustion gas delivered to said internal combustion engine to a pressure above atmospheric. 23. A method according to claim 20, comprising the step of creating a pressure differential between a higher pressure of the conditioned combustion gas and a lower pressure of the exhaust gas mixture of between 0.3 to 5 mbar. 24. A method according to claim 20, comprising the step of maintaining a flow of conditioned combustion gas and exhaust gas mixture at an essentially constant rate. 25. A method according to claim 20, comprising the step of maintaining a pressure of the conditioned combustion gas at an ambient pressure of the environment in which the internal combustion engine is located. 26. A method according to claim 20, comprising the step of directing conditioned combustion gas to flow against and around said internal combustion engine.
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이 특허에 인용된 특허 (4)
Gartner Uwe (Weinstadt DEX) Covini Silvano (Kernen DEX), Internal combustion engine with exhaust gas recirculation.
Poola Ramesh B. (Woodridge IL) Sekar Ramanujam R. (Naperville IL) Cole Roger L. (Elmhurst IL), Variable oxygen/nitrogen enriched intake air system for internal combustion engine applications.
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