Method and device for operating an internal combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-033/00
F02B-033/40
F02B-033/38
F02B-039/04
출원번호
US-0439857
(2007-09-06)
등록번호
US-8499747
(2013-08-06)
우선권정보
DE-10 2006 042 839 (2006-09-08)
국제출원번호
PCT/EP2007/007793
(2007-09-06)
§371/§102 date
20090304
(20090304)
국제공개번호
WO2008/028666
(2008-03-13)
발명자
/ 주소
Schmalzl, Hans-Peter
출원인 / 주소
BorgWarner Inc.
대리인 / 주소
Anderson, William G.
인용정보
피인용 횟수 :
9인용 특허 :
6
초록▼
The invention relates to a method for operating an internal combustion engine in the form of a spark-ignition engine (2) having the following method steps: pre-compressing the air supplied to the combustion chambers (15A-15D) of the internal combustion engine (2), directly injecting fuel into the co
The invention relates to a method for operating an internal combustion engine in the form of a spark-ignition engine (2) having the following method steps: pre-compressing the air supplied to the combustion chambers (15A-15D) of the internal combustion engine (2), directly injecting fuel into the combustion chambers (15A-15D) of the internal combustion engine (2), and adjusting the valve overlap of the gas exchange valves corresponding to the load range in which the internal combustion engine (2) is operated, characterized by the following method step: carrying out the pre-compression in a charging device in the form of an exhaust-gas turbocharger having a turbine (5) with variable turbine geometry (VTG), wherein the engine exhaust gas is supplied to the turbine (5) via separate spiral ducts (17A, 18A; 17B, 18B) of a multi-flow turbine housing (16A; 16B).
대표청구항▼
1. A method for operating an internal combustion engine in the form of a spark-ignition engine (2), the internal combustion engine (2) having gas exchange valves (28), the method comprising: pre-compressing the air which is supplied to the combustion chambers (15A-15D) of the internal combustion eng
1. A method for operating an internal combustion engine in the form of a spark-ignition engine (2), the internal combustion engine (2) having gas exchange valves (28), the method comprising: pre-compressing the air which is supplied to the combustion chambers (15A-15D) of the internal combustion engine (2),direct injection of fuel into the combustion chambers (15A-15D) of the internal combustion engine (2),adjusting valve overlap of the gas-exchange valves (28) corresponding to the load range in which the internal combustion engine (2) is operated,carrying out the pre-compression in a supercharging device in the form of an exhaust-gas turbocharger having a turbine (5) with variable turbine geometry (VTG), with the engine exhaust gas being supplied to the turbine (5) via separate spiral ducts (17A, 18A; 17B, 18B) of a multi-flow turbine housing (16A; 16B), andjoining the separate turbine streams, which are formed by the separate spiral ducts (17A, 18A; 17B, 18B), at medium and/or high engine rotational speeds by opening a switching valve (19), whereby at least a portion of the joined turbine streams are supplied to the turbine (5). 2. The method as claimed in claim 1, wherein a double-flow turbine housing (16B) is used as a multi-flow turbine housing. 3. The method as claimed in claim 1, wherein a twin-flow turbine housing (16A) is used as a multi-flow turbine housing. 4. The method as claimed in claim 1, further comprising the method step of operating the switching valve (19) as a wastegate. 5. A device for operating an internal combustion engine in the form of a spark-ignition engine (2), the internal combustion engine (2) having gas exchange valves (28), comprising: a supercharging device in the form of an exhaust-gas turbocharger (5, 6),a fuel direct injection device (3),a device (14) for adjusting valve overlap of the gas-exchange valves (28) of the internal combustion engine (2), the device (14) being configured to adjust the valve overlap of the gas-exchange valves (28) corresponding to the load range in which the internal combustion engine (2) is operated,the exhaust-gas turbocharger (5, 6) being provided with a variable turbine geometry (VTG) and a turbine (5), the turbine (5) being provided with a multi-flow turbine housing (16A; 16B) which has two separately-guided spiral ducts (17A, 18A; 17B, 18B), anda switching valve (19) for connecting the spiral ducts (17A, 18A; 17B, 18B) of the multi-flow turbine housing (16A; 16B), the switching valve (19) being configured to open at medium and/or high engine rotational speeds, whereby exhaust gases in the two separately-guided spiral ducts (17A, 18A; 17B, 18B) mix and pressure equalization between the two ducts (17A, 18A; 17B, 18B) is permitted. 6. The device as claimed in claim 5, wherein the turbine housing is designed as a twin-flow turbine housing (16A). 7. The device as claimed in claim 5, wherein the turbine housing is designed as a double-flow turbine housing (16B). 8. The device as claimed in claim 5, wherein the turbine housing (16A; 16B) has a bypass duct (24) which can be opened and closed by means of the switching valve (19). 9. The device as claimed in claim 5, further comprising an exhaust-gas catalytic converter (12) which is arranged downstream of the turbine (5) in the exhaust tract (4). 10. The device as claimed in claim 5, wherein the turbine housing (16A; 16B) has a tongue (21), wherein the switching valve (19) is located upstream of the tongue (21). 11. The method as claimed in claim 1, the turbine housing (16A; 16B) has a tongue (21), wherein the joining is performed upstream of the tongue (21).
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이 특허에 인용된 특허 (6)
Buckland, Julia Helen; Kolmanovsky, Ilya V.; Lezhnev, Lev, Coordinated control of electronic throttle and variable geometry turbocharger in boosted stoichiometric spark ignition engines.
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