IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0314134
(2008-12-04)
|
등록번호 |
US-8695336
(2014-04-15)
|
우선권정보 |
EP-07122235 (2007-12-04) |
발명자
/ 주소 |
- Burkhard, Sascha
- Heintze, Wolfgang
|
출원인 / 주소 |
- Caterpillar Motoren GmbH & Co. KG
|
대리인 / 주소 |
Finnegan, Henderson, Farabow, Garrett & Dunner LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
10 |
초록
▼
In one aspect, an internal combustion engine may include at least one turbocharger having an exhaust gas inlet and a turbine. An exhaust gas channel may be connected to the exhaust gas inlet of the turbocharger. In the exhaust gas system a valve may be provided that has a valve member. The valve may
In one aspect, an internal combustion engine may include at least one turbocharger having an exhaust gas inlet and a turbine. An exhaust gas channel may be connected to the exhaust gas inlet of the turbocharger. In the exhaust gas system a valve may be provided that has a valve member. The valve may regulate exhaust gas directed to the turbine. The valve position may be controlled in response to a characteristic indicative of charge pressure of combustion air. In another aspect, a method may be provided for regulating the pressure of charged air delivered by a turbocharger of an internal combustion engine. The method may include regulating the exhaust gas that is directed to the turbine of the turbocharger in response to a characteristic indicative of a charge pressure of charged combustion air. In another aspect, a valve for regulating exhaust gas directed to the turbine may be provided.
대표청구항
▼
1. An internal combustion engine comprising: at least one turbocharger having an exhaust gas inlet, a compressor, and a turbine;an exhaust gas system having an exhaust gas channel which is connected to the exhaust gas inlet; anda valve in the exhaust gas system, a position of the valve being control
1. An internal combustion engine comprising: at least one turbocharger having an exhaust gas inlet, a compressor, and a turbine;an exhaust gas system having an exhaust gas channel which is connected to the exhaust gas inlet; anda valve in the exhaust gas system, a position of the valve being controlled in response to a characteristic indicative of a charge pressure of combustion air, the valve including: a valve member configured for regulating exhaust gas directed to the turbine,a first moveable control member operatively connected to the valve member such that a position of the first control member is correlated with a position of the valve member, the position of the first control member being at least partially dependent on at least a force exerted on the first control member by a gas having a pressure that is indicative of the charge pressure of combustion air and a first reference force exerted on the first control member so as to control the position of the valve in a first range of the characteristic indicative of the charge pressure of combustion air, the gas being supplied from downstream of the compressor, the first reference force being supplied by a first reference pressure source, anda second moveable control member operatively connected to the valve member such that a position of the second control member is correlated with the position of the valve member, the position of the second control member being at least partially dependent on at least a force exerted on the second control member by the gas having the pressure that is indicative of the charge pressure of combustion air and a second reference force exerted on the second control member so as to control the position of the valve in a second range of the characteristic indicative of the charge pressure of combustion air, the second reference force being supplied by a second reference pressure source;wherein the first reference pressure source is different the second reference pressure source, andwherein the first control member is directly coupled to the valve member via a valve spindle, the first control member is mounted in an inner housing, and the inner housing is directly connected with the second control member which is moveable in an outer housing. 2. The internal combustion engine according to claim 1, further including a first biasing member exerting a force on the first control member which force varies with the position of the first control member. 3. The internal combustion engine according to claim 2, wherein the first control member is chosen from the group consisting of a membrane and a piston. 4. The internal combustion engine according to claim 1, further including a second biasing member exerting a force on the second control member which force varies with the position of the second control member. 5. The internal combustion engine according to claim 1, wherein the second control member is chosen from the group consisting of a membrane and a piston. 6. The internal combustion engine according to claim 1, wherein the inner housing defines a first pressure chamber on one side of the first control member and a second pressure chamber on another side of the first control member, the first pressure chamber is connected to the charged combustion air, and the second pressure chamber is connected to the first reference pressure source. 7. The internal combustion engine according to claim 6, wherein the outer housing defines a third pressure chamber on one side of the second control member and a fourth pressure chamber on another side of the second control member, the third pressure chamber is connected to the charged combustion air, and the fourth pressure chamber is connected to the second reference pressure source. 8. The internal combustion engine according to claim 6, wherein at least one channel is provided having an inlet that is in fluid connection with a source of the charged combustion air delivered by the turbocharger and having an outlet that is directed to at least one of the valve member and the valve spindle. 9. The internal combustion engine according to claim 8, wherein the at least one channel is provided in the inner housing, the inlet of the channel opens into the first pressure chamber, and the outlet of the channel is directed to at least one of the valve member and the valve spindle. 10. The internal combustion engine according to claim 1, wherein the valve includes an exhaust gas chamber with an exhaust gas inlet and an exhaust gas outlet, the exhaust gas inlet of the valve is connected with the exhaust gas system upstream of the turbocharger, and the exhaust gas outlet is connected with the exhaust gas system downstream of the turbocharger. 11. The internal combustion engine according to claim 10, wherein the exhaust gas inlet of the valve is provided with a valve seat, and the valve member and the valve seat are in co-operation for regulating pressure of exhaust gas which is directed to the exhaust gas inlet of the turbocharger. 12. The internal combustion engine according to claim 1, wherein the first range and the second range are different. 13. The internal combustion engine according to claim 1, wherein the positions of the first control member and the second control member are correlated with the position of the valve member in the first and second ranges of the characteristic indicative of the charge pressure of combustion air. 14. A method for regulating a pressure of charged air delivered by a turbocharger of an internal combustion engine, the method comprising: feeding exhaust gas of the internal combustion engine to a turbine of the turbocharger, the internal combustion engine including a valve including: a valve member,a first moveable control member operatively connected to the valve member such that a position of the first control member is correlated with a position of the valve member, the position of the first control member being at least partially dependent on at least a force exerted on the first control member by a gas having a pressure that is indicative of a charge pressure of combustion air and a first reference force exerted on the first control member so as to control the position of the valve in a first range of a characteristic indicative of the charge pressure of combustion air, the first reference force being supplied by a first reference pressure source, the first control member being directly coupled to the valve member via a valve spindle, and the first control member being mounted in an inner housing, anda second moveable control member operatively connected to the valve member such that a position of the second control member is correlated with the position of the valve member, the position of the second control member being at least partially dependent on at least a force exerted on the second control member by the gas having the pressure that is indicative of the charge pressure of combustion air and a second reference force exerted on the second control member so as to control the position of the valve in a second range of the characteristic indicative of the charge pressure of combustion air, the second reference force being supplied by a second reference pressure source, wherein the first reference pressure source is different from the second reference pressure source, the inner housing being directly connected with the second control member which is moveable in an outer housing;delivering the charged combustion air at a pressure above atmospheric pressure with the turbocharger; andregulating the exhaust gas that is directed to the turbine of the turbocharger in response to the characteristic indicative of the charge pressure of the charged combustion air by: regulating the exhaust gas directed to the turbine in the first range of the characteristic indicative of the charge pressure of the charged combustion air by exerting the force on the first control member by the charged combustion air delivered with the turbocharger, andregulating the exhaust gas directed to the turbine in a second range of the characteristic indicative of the charge pressure of the charged combustion air by exerting the force on the second control member by the charged combustion air delivered with the turbocharger. 15. The method according to claim 14, further including: exerting the first reference force on the first control member in an opposite direction of the charged combustion air. 16. The method according to claim 14, further including: exerting the second reference force on the second control member in an opposite direction of the charged combustion air. 17. The method according to claim 14, further including: acting with a biasing force on the first control member. 18. The method according to claim 14, further including: acting with a biasing force on the second control member. 19. The method according to claim 14, further including: directing a stream of the charged combustion air to the valve member. 20. The method according to claim 14, further including: directing a stream of the charged combustion air to a valve spindle of the valve. 21. The method according to claim 20, further including: diverting exhaust gas upstream from the turbocharger away from the turbocharger with the valve. 22. A valve configured to be provided in an exhaust gas system of an internal combustion engine, the valve including: a valve member configured to regulate exhaust gas directed to a turbine of an exhaust gas channel of a turbocharger;a first control member operatively connected to the valve member via a valve spindle such that a position of the first control member is correlated with a position of the valve member;a first pressure chamber in which a gas may be contained that, in use, exerts a force on the first control member;at least one channel having an inlet that is in fluid connection with the first pressure chamber and having an outlet that is directed to at least one of the valve member and the valve spindle so that the at least one channel is configured to allow fluid from the first pressure chamber to contact the at least one of the valve member and the valve spindle; anda second moveable control member operatively connected to the valve member such that a position of the second control member is correlated with the position of the valve member, the position of the second control member being at least partially dependent on at least a force exerted on the second control member,wherein the first control member is mounted in an inner housing, the inner housing is connected with the second control member which is moveable in an outer housing, the inner housing defines the first pressure chamber on one side of the first control member and a second pressure chamber on another side of the first control member, and the outer housing defines a third pressure chamber on one side of the second control member and a fourth pressure chamber on another side of the second control member. 23. The valve according to claim 22, further including a baffle plate situated between the valve member and the first control member, the baffle plate including an opening through which the valve spindle extends, the baffle plate being arranged to screen off the control member from a fluid flow that, in use, passes the valve member. 24. The valve according to claim 22, wherein the first pressure chamber is connected to a source of charged air, the second pressure chamber is connected to a first reference pressure source exerting a first reference force on the first control member, and the third pressure chamber is connected to the source of charged air, the fourth pressure chamber is connected to a second reference pressure source exerting a second reference force on the second control member. 25. The valve according to claim 22, wherein: the position of the first control member at least partially depends on at least the force exerted on the first control member by the gas having a pressure that is indicative of a charge pressure of combustion air and a first reference force exerted on the first control member; andthe position of the second control member depends on at least the force exerted on the second control member by the gas having the pressure that is indicative of the charge pressure of combustion air and a second reference force exerted on the second control member. 26. The valve according to claim 22, wherein the inlet of the at least one channel is in fluid connection with a source of charged air delivered by the turbocharger. 27. The valve according to claim 26, wherein the outlet of the at least one channel is configured to direct the charged air to the at least one of the valve member and the valve spindle to flush the at least one of the valve member and the valve spindle with the charged air. 28. The valve according to claim 22, wherein the at least one channel is configured to direct fluid from the first pressure chamber to the at least one of the valve member and the valve spindle.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.