Boost control for internal combustion engine using substantially carbon-free fuel
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-043/00
F02B-033/00
F02D-023/00
출원번호
US-0274702
(2005-11-14)
등록번호
US-7278407
(2007-10-09)
발명자
/ 주소
Natkin,Robert
출원인 / 주소
Ford Global Technologies, LLC
대리인 / 주소
Alleman Hall McCoy Russell & Tuttle LLP
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A system and method for limiting HC, CO, CO2, and NOx emissions in an internal combustion engine is provided. According to one aspect of the disclosure, a substantially carbon-free fuel, such as hydrogen (H2), is used to fuel combustion in an internal combustion engine. The internal combustion engi
A system and method for limiting HC, CO, CO2, and NOx emissions in an internal combustion engine is provided. According to one aspect of the disclosure, a substantially carbon-free fuel, such as hydrogen (H2), is used to fuel combustion in an internal combustion engine. The internal combustion engine is operated, at least some of the time, at an equivalence ratio less than 1 and a boost pressure ratio greater than 1.
대표청구항▼
The invention claimed is: 1. A hydrogen-fueled internal combustion engine, comprising: at least one cylinder; a hydrogen deliverer configured to supply the at least one cylinder with at least substantially carbon-free hydrogen; an air deliverer configured to supply at least oxygen to the at least o
The invention claimed is: 1. A hydrogen-fueled internal combustion engine, comprising: at least one cylinder; a hydrogen deliverer configured to supply the at least one cylinder with at least substantially carbon-free hydrogen; an air deliverer configured to supply at least oxygen to the at least one cylinder at a controllable boost pressure; and an electronic control system controlling at least hydrogen delivery, oxygen delivery, and boost pressure such that during at least one condition, a boost pressure ratio is inversely proportionate to an equivalence ratio having an actual fuel to air ratio as its numerator and a stoichiometric fuel to air ratio as its denominator. 2. The hydrogen-fueled internal combustion engine of claim 1, wherein the air deliverer includes a turbocharger. 3. The hydrogen-fueled internal combustion engine of claim 1, wherein the air deliverer includes a supercharger. 4. The hydrogen-fueled internal combustion engine of claim 1, further comprising a lean NOx trap configured to absorb feedgass NOx. 5. A vehicle comprising the hydrogen-fueled internal combustion engine of claim 1. 6. A method of decreasing HC, CO, CO2, and NOx emissions in an internal combustion engine, comprising: combusting a substantially carbon-free fuel at an equivalence ratio less than 1, the equivalence ratio having an actual fuel to air ratio as its numerator and a stoichiometric fuel to air ratio as its denominator; and boosting intake-air pressure while combusting the carbon-free fuel at the equivalence ratio less than 1, where a relative amount of boosting is selected based on the equivalence ratio. 7. The method of claim 6, wherein intake-air pressure is boosted so that a boost pressure ratio is inversely proportionate to the equivalence ratio. 8. The method of claim 6, wherein the equivalence ratio is between about 0.2 and about 0.5. 9. The method of claim 8, wherein intake-air pressure is boosted such that a boost pressure ratio is between about 2 and about 5. 10. The method of claim 6, wherein the equivalence ratio is between about 0.25 and about 0.4. 11. The method of claim 10, wherein intake-air pressure is boosted such that a boost pressure ratio is between about 2.5 and about 4. 12. The method of claim 6, wherein boosting intake-air pressure includes using a turbocharger to boost intake air pressure. 13. The method of claim 6, wherein boosting intake-air pressure includes using a supercharger to boost intake air pressure. 14. The method of claim 6, further comprising absorbing feedgas NOx. 15. The method of claim 6, wherein the at least substantially carbon-free fuel is hydrogen. 16. A vehicle configured to execute the method of claim 6. 17. A method of decreasing HC, CO, CO2, and NOx emissions in an internal combustion engine, comprising: combusting substantially carbon-free hydrogen fuel at an equivalence ratio less than 1, the equivalence ratio having an actual fuel to air ratio as its numerator and a stoichiometric fuel to air ratio as its denominator; boosting intake-air pressure by an amount inversely proportionate to the equivalence ratio. 18. A vehicle configured to execute the method of claim 17.
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이 특허에 인용된 특허 (7)
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