METHODS AND SYSTEMS FOR REDUCING THE FORMATION OF OXIDES OF NITROGEN DURING COMBUSTION OF ENGINES
First Claim
1. A method for limiting a peak temperature of combustion in an engine, the method comprising:
- in a first cycle of the engine;
introducing fuel into a combustion chamber of the engine under a first set of conditions;
igniting the fuel in the combustion chamber to cause combustion; and
measuring acceleration of an engine component in response to the combustion; and
in a second cycle of the engine;
based on the measured acceleration of the engine component during the first cycle, introducing fuel into the combustion chamber under a second set of conditions to reduce a peak temperature of combustion in the combustion chamber.
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Abstract
The present disclosure is directed to various embodiments of systems and methods for reducing the production of harmful emissions in combustion engines. One method includes correlating combustion chamber temperature to acceleration of a power train component, such as a crankshaft. Once the relationship between acceleration/deceleration of the component and combustion temperature are known, an engine control module can be configured to adjust combustion parameters to reduce combustion temperature when acceleration data indicates peak combustion temperature is approaching a harmful level, such as a level conducive to the formation of undesirable oxides of nitrogen. Various embodiments of the methods and systems disclosed herein can employ injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels.
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Citations
22 Claims
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1. A method for limiting a peak temperature of combustion in an engine, the method comprising:
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in a first cycle of the engine; introducing fuel into a combustion chamber of the engine under a first set of conditions; igniting the fuel in the combustion chamber to cause combustion; and measuring acceleration of an engine component in response to the combustion; and in a second cycle of the engine; based on the measured acceleration of the engine component during the first cycle, introducing fuel into the combustion chamber under a second set of conditions to reduce a peak temperature of combustion in the combustion chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of eliminating or at least reducing the production of oxides of nitrogen during combustion in a vehicle engine, the method comprising:
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introducing fuel into a combustion chamber of the engine; igniting the fuel in the combustion chamber to cause combustion; measuring acceleration of an engine component in response to the combustion; and adjusting a parameter of combustion to reduce peak combustion temperature based on the measured acceleration. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of manufacturing an engine control module for preventing the formation of oxides of nitrogen during combustion, the method comprising:
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introducing fuel into a combustion chamber of an engine; igniting the fuel in the combustion chamber to cause combustion; measuring a peak temperature in the combustion chamber resulting from the combustion; measuring acceleration of an engine component in response to the combustion; correlating the measured acceleration to the measured peak temperature; and programming an engine control module to control peak combustion chamber temperature based on measured acceleration. - View Dependent Claims (19)
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20. A system for controlling an internal combustion engine, the system comprising:
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means for introducing fuel into a combustion chamber of the engine; means for igniting the fuel in the combustion chamber to cause combustion; means for measuring acceleration of an engine component in response to the combustion; and means for adjusting a parameter of combustion to reduce peak combustion temperature based on the measured acceleration. - View Dependent Claims (21, 22)
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Specification