Methods and systems for adaptively cooling combustion chambers in engines
First Claim
1. A method of limiting a peak temperature of a combustion chamber in an engine, the method comprising:
- in a first portion of a cycle of the engineinjecting fuel directly into the combustion chamber during at least one of an intake stroke and a compression stroke of the first cycle; and
igniting the fuel in the combustion chamber to cause combustion;
monitoring a temperature of the combustion chamber resulting from the combustion; and
in at least one of the first portion or a second portion of the cycle of the enginewhen the temperature reaches a predetermined value, injecting coolant directly into the combustion chamber only during an exhaust stroke of the cycle.
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Accused Products
Abstract
The present disclosure is directed to various embodiments of systems and methods for cooling a combustion chamber of an engine. One method includes introducing fuel into the combustion chamber of an engine having an energy transfer device that moves through an intake stroke, a compression stroke, a power stroke, and an exhaust stroke. The method further includes monitoring a temperature of the combustion chamber. When the temperature reaches a predetermined value, the method also includes introducing coolant into the combustion chamber only during at least one of the power stroke and the exhaust stroke of the energy transfer device.
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Citations
20 Claims
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1. A method of limiting a peak temperature of a combustion chamber in an engine, the method comprising:
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in a first portion of a cycle of the engine injecting fuel directly into the combustion chamber during at least one of an intake stroke and a compression stroke of the first cycle; and igniting the fuel in the combustion chamber to cause combustion; monitoring a temperature of the combustion chamber resulting from the combustion; and in at least one of the first portion or a second portion of the cycle of the engine when the temperature reaches a predetermined value, injecting coolant directly into the combustion chamber only during an exhaust stroke of the cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of cooling a combustion chamber in an engine, the method comprising:
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introducing fuel into the combustion chamber of the engine, wherein an energy transfer device moves at least partially within the combustion chamber through an intake stroke, a compression stroke, a power stroke, and an exhaust stroke; causing the fuel to combust in the combustion chamber; monitoring a temperature of the combustion chamber; and when the temperature reaches a predetermined value, introducing coolant into the combustion chamber only during the exhaust stroke of the energy transfer device. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An internal combustion engine system comprising:
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a combustion chamber; an energy transfer device movable relative to the combustion chamber through a cycle comprising an intake stroke, a compression stroke, a power stroke, and an exhaust stroke; an injector configured to inject fuel into the combustion chamber during at least one of the intake stroke and the compression stroke; an ignition feature configured to ignite the fuel in the combustion chamber; and a sensor configured to detect a temperature of the combustion chamber, wherein when the temperature reaches a predetermined value, the injector is configured to inject coolant directly into the combustion chamber only during the exhaust stroke. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification