Exhaust manifold comprising an EGR passage and a coolant passage
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01N-003/04
F02M-026/22
F01N-013/10
F02M-026/15
출원번호
US-0078774
(2013-11-13)
등록번호
US-9828894
(2017-11-28)
발명자
/ 주소
Paull, Adam J
출원인 / 주소
DEERE & COMPANY
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
Disclosed is an exhaust manifold that comprises an exhaust gas passage, an EGR passage, and a coolant passage. The exhaust gas passage extends fluidly between an exhaust gas inlet and an exhaust gas outlet positioned downstream thereof. The EGR passage extends fluidly between an EGR inlet and an EGR
Disclosed is an exhaust manifold that comprises an exhaust gas passage, an EGR passage, and a coolant passage. The exhaust gas passage extends fluidly between an exhaust gas inlet and an exhaust gas outlet positioned downstream thereof. The EGR passage extends fluidly between an EGR inlet and an EGR outlet positioned downstream thereof. The EGR inlet is defined by the exhaust gas passage. A coolant passage extends fluidly between a coolant inlet and a coolant outlet positioned downstream thereof. The coolant passage overlaps the exhaust gas passage and the EGR passage. The exhaust gas passage is configured to cool the exhaust gas, and EGR passage is configured to cool the recirculated portion of the exhaust gas.
대표청구항▼
1. An exhaust manifold, comprising: a main housing;a plurality of exhaust gas inlet ducts, each exhaust gas inlet duct extending fluidly between a duct inlet and a duct outlet positioned downstream thereof, each exhaust gas inlet duct extending away from the main housing, each exhaust gas inlet duct
1. An exhaust manifold, comprising: a main housing;a plurality of exhaust gas inlet ducts, each exhaust gas inlet duct extending fluidly between a duct inlet and a duct outlet positioned downstream thereof, each exhaust gas inlet duct extending away from the main housing, each exhaust gas inlet duct comprising a mounting flange configured to mount to an internal combustion engine;an exhaust gas passage disposed in the main housing and extending fluidly between an exhaust gas inlet and an exhaust gas outlet positioned downstream thereof, the exhaust gas passage configured to allow exhaust gas, from the engine, to pass therethrough;an exhaust gas recirculation (“EGR”) passage disposed in the main housing and extending fluidly between an EGR inlet and an EGR outlet positioned downstream thereof, the EGR inlet being defined by the exhaust gas passage, the EGR passage configured to allow a recirculated portion of the exhaust gas to pass therethrough and back to an internal combustion engine, the exhaust gas outlet being positioned only downstream of the engine and configured to allow an entire remaining portion of the exhaust gas to pass therethrough and out of the engine; anda coolant passage disposed in the main housing and extending fluidly between a coolant inlet and a coolant outlet positioned downstream thereof, the coolant passage configured to cool the exhaust gas passage and the EGR passage via a coolant, the exhaust gas passage configured to cool the exhaust gas, the EGR passage configured to cool the recirculated portion of the exhaust gas. 2. The exhaust manifold of claim 1, wherein the coolant is an engine coolant used in a closed cooling system. 3. The exhaust manifold of claim 1, wherein a longitudinal axis of the exhaust gas passage is positioned in parallel to a longitudinal axis of the EGR passage. 4. The exhaust manifold of claim 1, wherein the exhaust gas and the recirculated portion of the exhaust gas flows towards a first end of the exhaust manifold, the coolant flows towards a second end of the exhaust manifold, the first end and the second end are positioned on opposite longitudinal ends relative to one another. 5. The exhaust manifold of claim 1, wherein the EGR passage comprises a plurality of EGR passage portions extending parallel relative to one another, the coolant passage surrounding the plurality of EGR passage portions so as to cool the plurality of EGR passage portions via the coolant, and the plurality of EGR passage portions are configured to cool the recirculated portion of the exhaust gas. 6. The exhaust manifold of claim 5, further comprising a plurality of mounting brackets disposed in the main housing and positioned about the plurality of EGR passage portions and configured to stabilize the plurality of EGR passage portions. 7. The exhaust manifold of claim 5, further comprising an EGR inlet manifold and an EGR outlet manifold positioned downstream thereof, the plurality of EGR passage portions positioned fluidly between the EGR inlet manifold and the EGR outlet manifold, the EGR inlet manifold configured to split the recirculated portion of the exhaust gas entering the plurality of EGR passage portions therebetween, and the EGR outlet manifold configured to recombine the recirculated portion of the exhaust gas exiting the plurality of EGR passage portions and configured to direct the recirculated portion of the exhaust gas to an intake manifold of the internal combustion engine. 8. The exhaust manifold of claim 7, further comprising a bleed passage disposed in the main housing and extending fluidly between a bleed inlet and a bleed outlet, the bleed inlet being defined by the EGR passage, the bleed outlet being positioned downstream of the bleed inlet and defined by the exhaust gas passage, the bleed passage configured to provide a periodic passage for a part of the recirculated portion of the exhaust gas to bleed and rejoin the exhaust gas, the EGR outlet manifold defining the bleed inlet. 9. The exhaust manifold of claim 1, further comprising a bleed passage disposed in the main housing and extending fluidly between a bleed inlet and a bleed outlet, the bleed inlet being defined by the EGR passage, the bleed outlet being positioned downstream of the bleed inlet and defined by the exhaust gas passage, the bleed passage configured to provide a periodic passage for a part of the recirculated portion of the exhaust gas to bleed and rejoin the exhaust gas. 10. The exhaust manifold of claim 9, further comprising a check valve positioned in the bleed passage, the check valve being configured to open towards the exhaust gas passage, and away from the EGR passage, upon reaching a bleed pressure. 11. The exhaust manifold of claim 9, wherein the bleed passage comprises an orifice. 12. The exhaust manifold of claim 1, wherein the coolant passage comprises a first coolant portion and a second coolant portion and a plurality of connecting passages positioned fluidly therebetween. 13. The exhaust manifold of claim 12, wherein the first coolant portion surrounds the EGR passage. 14. The exhaust manifold of claim 12, wherein the plurality of connecting passages comprises a first set of passages and a second set of passages, the first set of passages is positioned above the exhaust gas passage and the EGR passage, and the second set of passages is positioned below the exhaust gas passage and the EGR passage. 15. The exhaust manifold of claim 14, wherein the first set of passages is positioned perpendicularly relative to a longitudinal axis of the exhaust gas passage and a longitudinal axis of the EGR passage, and the second set of passages is positioned perpendicularly relative to the longitudinal axis of the exhaust gas passage and the longitudinal axis of the EGR passage. 16. The exhaust manifold of claim 12, further comprising an internal wall, the first coolant portion positioned on a first side of the internal wall, the second coolant portion positioned on a second side of the internal wall, the internal wall defining the coolant passage. 17. An exhaust manifold, comprising: a main housing;an exhaust gas passage disposed in the main housing and extending fluidly between an exhaust gas inlet and an exhaust gas outlet positioned downstream thereof, the exhaust gas passage being configured to allow exhaust gas from an internal combustion engine to pass therethrough, the exhaust gas outlet being positioned only downstream of the engine;an exhaust gas recirculation (“EGR”) passage disposed in the main housing and extending fluidly between an EGR inlet and an EGR outlet positioned downstream thereof, the EGR inlet being defined by the exhaust gas passage, the EGR passage configured to allow a recirculated portion of the exhaust gas to pass therethrough and back to the internal combustion engine; anda bleed passage extending fluidly between a bleed inlet and a bleed outlet, the bleed inlet being defined by the EGR passage, the bleed outlet being positioned downstream of the bleed inlet and defined by the exhaust gas passage, the bleed passage configured to provide a periodic passage for a part of the recirculated portion of the exhaust gas to bleed and rejoin the exhaust gas.
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이 특허에 인용된 특허 (7)
Aula Howard A. (Dearborn Heights MI) Mauch Jerry L. (Dearborn Heights MI), Engine EGR cooler.
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