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US 11,512,656 B2Granted
Oxycombustion engine systems including recirculation management features
AssigneeSaudi Arabian Oil Company
InventorsHusain A. Baaqel, Esam Z. Hamad
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AssigneeSaudi Arabian Oil Company
InventorsHusain A. Baaqel, Esam Z. Hamad
Estimating the term…
A method for operating an oxycombustion engine system includes passing a nitrogen-depleted gas, a fuel, and a recycled exhaust gas into a combustion chamber, combusting a mixture of the nitrogen-depleted gas, the fuel, and the recycled exhaust gas, thereby producing an exhaust gas including carbon dioxide, detecting a pressure of the recycled exhaust gas passed to the combustion chamber, determining whether the detected pressure of the recycled exhaust gas is less than a configurable pressure threshold, and in response to determining that the detected pressure of the recycled exhaust gas is less than the configurable pressure threshold, increasing the pressure of the recycled exhaust gas passed to the combustion chamber.
An oxycombustion engine system comprising:
An oxycombustion engine system comprising:
An oxycombustion engine system comprising:
An oxycombustion engine system comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures:…
Controlling exhaust gas recirculation [EGR]: specific aspects of external EGR control
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g.…: by…
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g.…: by…
About 14 years of term left · ends 15 Oct 2040 (estimated)
The present disclosure relates to oxycombustion engine systems and methods for operating the same. More particularly, the present disclosure relates to oxycombution engine systems including features for managing the recirculation of exhaust gas, and features for separating nitrogen from air to form a nitrogen-depleted gas for use in an oxycombustion process.
Petroleum-based fuels are used to power the vast majority of vehicles. For example, fuels such as gasoline, diesel fuel, and natural gas are relatively inexpensive and widely available to users, and are used to power internal combustion engines of vehicles throughout the world. However, the combustion of petroleum-based fuels may release pollutants into the environment, which may be undesirable for a number of reasons. As alternative sources of energy may be too costly and underdeveloped, internal combustion engines are needed that can operate with reduced emission of pollutants.
One strategy for reducing the emission of pollutants includes the utilization of a nitrogen-depleted gas during the combustion process, referred to herein as “oxycombustion.” The nitrogen-depleted gas includes oxygen and little or no nitrogen, such that the combustion process primarily produces carbon dioxide and water vapor, while producing minimal or no nitrogen oxides (e.g., NO and NO2, referred to herein as NOx). The production of NOx is regulated by various jurisdictions, and accordingly, reducing or eliminating the production of NOx can assist maintaining compliance with emissions regulations.
The following detailed description of specific embodiments of the present disclosure can be best understood when read in conjunction with the following drawings, where like structure is indicated with like reference numerals and in which:
FIG. 1A schematically depicts a section view of a combustion chamber of an internal combustion engine of an oxycombustion engine system, according to one or more embodiments shown and described herein;
FIG. 1B schematically depicts a section view of a compression chamber of the internal combustion engine of FIG. 1A, according to one or more embodiments shown and described herein;
Reference will now be made in greater detail to various embodiments, some embodiments of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals will be used throughout the drawings to refer to the same or similar parts.
Embodiments of the present disclosure are directed to oxycombustion engine systems that include features for managing the recirculation of exhaust gas to a combustion chamber. By managing the recirculation of exhaust gas to the combustion chamber, desirable combustion stability can be maintained and undesirable emissions can be effectively managed. Further, by managing the recirculation of exhaust gas to the combustion chamber, a temperature within the combustion chamber can be maintained within an acceptable range. Some embodiments described herein further include features for separating nitrogen from air that can be incorporated on-board in vehicle applications.
Now referring to FIG. 1A, a section view of an internal combustion engine 102 of an oxycombustion engine system 100 is schematically depicted. In the embodiment depicted in FIG. 1A, the internal combustion engine 102 includes a cylinder head 104 engaged with a block that defines one or more sidewalls 106 engaged with the cylinder head 104. In embodiments, a piston 124 is engaged with the one or more sidewalls 106. The piston 124, the cylinder head 104, and the one or more sidewalls 106 at least partially define a combustion chamber 122 in which fuel is combusted. In embodiments, the piston 124 is movable along the one or more sidewalls 106 toward and away from the cylinder head 104, for example, as fuel is combusted within the combustion chamber 122.