IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0883035
(2001-06-15)
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발명자
/ 주소 |
- Truitt, Patrick W.
- Herbert, Kay
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
59 인용 특허 :
2 |
초록
▼
An impeller, a pressure generator using such an impeller, and a pressure support system and method using such a pressure generator to deliver a flow of breathing gas to a patient is disclosed. The impeller enables a pressure of a flow of breathing gas delivered by a pressure support system to a pati
An impeller, a pressure generator using such an impeller, and a pressure support system and method using such a pressure generator to deliver a flow of breathing gas to a patient is disclosed. The impeller enables a pressure of a flow of breathing gas delivered by a pressure support system to a patient to remain substantially constant despite variations of the output flow rate. The impeller includes a plurality of impeller blades disposed on a face of the impeller body with an inlet area between each pair of adjacent blades being substantially equal a corresponding outlet area for each pair of adjacent blades.
대표청구항
▼
An impeller, a pressure generator using such an impeller, and a pressure support system and method using such a pressure generator to deliver a flow of breathing gas to a patient is disclosed. The impeller enables a pressure of a flow of breathing gas delivered by a pressure support system to a pati
An impeller, a pressure generator using such an impeller, and a pressure support system and method using such a pressure generator to deliver a flow of breathing gas to a patient is disclosed. The impeller enables a pressure of a flow of breathing gas delivered by a pressure support system to a patient to remain substantially constant despite variations of the output flow rate. The impeller includes a plurality of impeller blades disposed on a face of the impeller body with an inlet area between each pair of adjacent blades being substantially equal a corresponding outlet area for each pair of adjacent blades. ess of said first fuel, by a second spark ignition. 3. A direct injection internal combustion engine according to claim 1, wherein said control device burns said first fuel, injected during said first compression stroke, by a spark ignition, and burns said second fuel, injected into burnt gases generated during a combustion process of said first fuel, by a compression self ignition. 4. A direct injection internal combustion engine according to claim 1, wherein said intake and exhaust mechanism starts an exhaust operation earlier than an intake operation, and finish said intake operation later than said exhaust operation. 5. A direct injection internal combustion engine according to claim 1, further comprising: a supercharging device disposed in an intake system. 6. A direct injection internal combustion engine according to claim 1, wherein said intake and exhaust mechanism includes an adjustable valve mechanism that switches an operation mode between a normal operation mode for carrying out a normal four-cycle operation, wherein an intake stroke, a compression stroke, an expansion stroke, and an exhaust stroke are sequentially repeated along with rotation of said crank shaft, and an irregular operation mode for carrying out an irregular operation, wherein said first compression stroke, said first expansion stroke, said second compression stroke, and said second expansion stroke are sequentially repeated; and said control device selects said normal four-cycle operation in said normal operation mode at least when said internal combustion engine is operating under a high load. 7. A direct injection internal combustion engine according to claim 1, wherein said control device carries out an open-loop controlling operation such that a total fuel amount of said first fuel and said second fuel has a predetermined air-fuel ratio with respect to an amount of intake air. 8. A direct injection internal combustion engine according to claim 7, wherein said control device controls an amount of said first fuel to a value between about 1/10 and about 1/2 of said total fuel amount, and controls an amount of said second fuel to a differential fuel amount between said total fuel amount and the amount of said first fuel injected. 9. A direct injection internal combustion engine according to claim 7, wherein said control device determines whether said second fuel can be burned by a compression self ignition according to at least one of the following: a rotational speed of said internal combustion engine, a load on said internal combustion engine, a ratio of said first fuel amount to said second fuel amount, an air-fuel ratio during burning of said first fuel, and an injection timing of said second fuel, and said control device burns said second fuel, injected in one of said first expansion stroke and said second compression stroke, by a spark ignition when it is determined that said second fuel cannot be burned by the compression self ignition. 10. A direct injection internal combustion engine according to claim 7, wherein said control device makes said second fuel burnable by a compression self ignition by controlling at least one of the following: the rotational speed of said internal combustion engine, the load on said internal combustion engine, a ratio of said first fuel amount to said second fuel amount, an air-fuel ratio during burning of said first fuel, and an injection timing of said second fuel. 11. A direct injection internal combustion engine according to claim 1, wherein said control device injects said first fuel during said first compression stroke such that said first fuel performs a stratified charge combustion, and injects said second fuel in said first expansion stroke such that said second fuel performs a uniform combustion. 12. A method for controlling a direct injection internal combustion engine, comprising: carrying out an intake operation and an exhaust operation for a pr
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