[특허]Exhaust gas flow control system for an internal combustion engine

Exhaust gas flow control system for an internal combustion engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-025/07 F02B-037/02 F02D-009/06 F02B-037/18 F02B-037/22 F02M-026/16 F02M-026/54 F02M-026/71
출원번호	US-0827368 (2015-08-17)
등록번호	US-9784221 (2017-10-10)
우선권정보	DE-10 2013 003 031 (2013-02-22)
발명자 / 주소	Kuenzel, Stefan
출원인 / 주소	DAIMLER AG
대리인 / 주소	Bach, Klaus J.
인용정보	피인용 횟수 : 0 인용 특허 : 26

초록 ▼

In an exhaust gas flow control system for an internal combustion engine, with a first exhaust gas duct and a second exhaust gas duct, through both of which exhaust gas from the internal combustion engine can flow to a turbine of an exhaust gas turbocharger with an exhaust gas recirculation line branching off the first exhaust gas duct, a shut-off element is provided which is adjustable between a closed position in which exhaust gas is prevented from flowing into the exhaust gas recirculation line and directing it via a communication passage into the second exhaust gas duct, and at least a first open position in which exhaust gas is directed out of the first exhaust gas duct into the exhaust gas recirculation line while blocking the communication passage between the first and second exhaust gas ducts and a second open position wherein both the first and the second exhaust gas ducts as well as the communication passage between the two ducts is open but the recirculation line is closed.

대표청구항 ▼

1. An exhaust gas flow control system (10) for an internal combustion engine, comprising: a first exhaust gas duct (14), which is associated with a first inlet duct (16) of a turbine of an exhaust gas turbocharger and through which exhaust gas from the internal combustion engine can flow,a second exhaust gas duct (16), which is at least partially fluidically separated from the first exhaust gas duct (14) and through which exhaust gas from the internal combustion engine can flow and which is associated with a second inlet duct of the turbine,an exhaust gas return line (22) which branches off from the first exhaust gas duct (14), anda shut-off valve (26) which is adjustable between at least one closed position (1), which prevents exhaust gas from flowing out of the first exhaust gas duct (14) into the exhaust gas return line (22), and a first open position (2), which allows exhaust gas to flow out of the first exhaust gas duct (14) into the exhaust gas return line (22),a fluidic connecting passage (30) provided between the exhaust gas ducts (14, 16), via which exhaust gas can be diverted out of the first exhaust gas duct (14) and can be delivered to the second exhaust gas duct (16) when the shut-off valve (26) is in the first closed position (1) and the shut-off element (26) in the first open position (2) blocking the first exhaust gas duct (14) at least downstream of the fluidic connection (30) and opening the gas exhaust gas return line (22),the shut-off element (26) being movable to a second closed position (4), in which the return line (22) is blocked so that the exhaust gas from the first exhaust gas duct (14) is prevented from flowing into the exhaust gas return line (22) and the connecting passage (30) between the exhaust gas ducts (14, 16) and the first exhaust gas duct (14) is opened so as to divert exhaust gas from the first exhaust gas duct (14) into the second exhaust das duct (16). 2. The exhaust gas flow control system (10) according to claim 1, wherein the first exhaust gas duct (14) is fluidically shut off by the shut-off valve (26) in its first open position (2) downstream of a branch point (24) so that all the exhaust gas from the first exhaust gas duct (14) is diverted into the exhaust gas return line (22). 3. The exhaust gas flow control system (10) according to claim 1, wherein the shut-off valve (26) is adjustable into an intermediate open position (3), in which the exhaust gas return line (22) and also the first exhaust gas duct (14) as well as the connecting passage (30) are open. 4. The exhaust gas flow control system (10) according to claim 1, wherein second exhaust gas duct (16) has a larger cross-section through which exhaust gas flows than the first exhaust gas duct (14). 5. The exhaust gas flow control system (10) according to claim 1, wherein the cross-sections of the exhaust gas ducts (14, 16) are the same size.

이 특허에 인용된 특허 (26)

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Schmid, Wolfram; Sumser, Siegfried, Internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device.
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Halimi Edward M. (6155 Carpinteria Ave. Carpinteria CA 93013) Woollenweber William E. (3169 Camino Del Arco Carlsbad CA 92009) Maloof Ralph P. (4527 Park Monaco Calabasas CA 91302), Motor-assisted variable geometry turbocharging system.
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Woollenweber ; Jr. William E. (Columbus IN), Turbine housing.
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Haas Otto F. (Woodbridge CAX), Variable air volume terminal unit.
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Wu, Ko-Jen; Melecosky, Jason C.; Walter, Darrel J., Variable twin-scroll turbine for turbocharged internal combustion engine featuring cylinder deactivation.
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