Method and apparatus for controlling the composition of the combustion charge in internal combustion engines
First Claim
1. An apparatus for controlling the composition of a combustion charge in an internal combustion engine having externally supplied ignition, said charges comprising an oxygen infused gas and a fuel, and said engine including a crankshaft, at least one cylinder having a piston operatively connected to said crankshaft for reciprocal motion therein, a combustion chamber in which during each combustion cycle a combustion charge is progressively ignited beginning at an ignitor location within said chamber to cause said piston to move toward an extreme position, and the progressive ignition of said charge defining a flame-front which expands throughout said chamber from said ignition location, comprising:
- detection means in proximity with said combustion chamber and said crankshaft for directly ascertaining a events φ
corresponding to combustion and crankshaft angle,means for storing a plurality of values of said events,means for determining the scattering value of said stored events φ
for consecutive combustion charges,means providing a set-point value of a target scatter value of said events,comparison means for comparing said scatter value of said stored values with said set-point value, andregulating means responsive to said comparison means for adjusting the composition of said charge.
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Abstract
A method is proposed for controlling the composition of the charges to be combusted in an internal combustion engine with externally supplied ignition, the charges comprising gas which contains oxygen, and a fuel. In order to automatically adjust the charge composition in at least one operating range, an event caused by the given combustion of the charge is ascertained in at least one combustion chamber in terms of at which crankshaft angle or the like (Y value) a predetermined status of this event is attained during the given charge combustion. The scattering of this Y value is continuously regulated to a set-point scattering value by means of adjusting the charge composition.
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Citations
31 Claims
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1. An apparatus for controlling the composition of a combustion charge in an internal combustion engine having externally supplied ignition, said charges comprising an oxygen infused gas and a fuel, and said engine including a crankshaft, at least one cylinder having a piston operatively connected to said crankshaft for reciprocal motion therein, a combustion chamber in which during each combustion cycle a combustion charge is progressively ignited beginning at an ignitor location within said chamber to cause said piston to move toward an extreme position, and the progressive ignition of said charge defining a flame-front which expands throughout said chamber from said ignition location, comprising:
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detection means in proximity with said combustion chamber and said crankshaft for directly ascertaining a events φ
corresponding to combustion and crankshaft angle,means for storing a plurality of values of said events, means for determining the scattering value of said stored events φ
for consecutive combustion charges,means providing a set-point value of a target scatter value of said events, comparison means for comparing said scatter value of said stored values with said set-point value, and regulating means responsive to said comparison means for adjusting the composition of said charge. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling the composition of combustion charges in an internal combustion engine having externally-supplied ignition, said charges comprising an oxygen infused gas and a fuel, and said engine including a crankshaft, at least one cylinder having a piston operatively connected to said crankshaft for motion therein, a combustion chamber in which during each combustion cycle a combustion charge is progressively ignited beginning at an ignition location within said chamber to cause said piston to move towards an extreme position, and the progressive ignition of said charge defining a flame-front which expands throughout said chamber from said ignition location, comprising the steps of:
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directly detecting in said chamber during at least one operating range of said engine an event in terms of a value φ
caused by combustion of said charges related to said piston position at which a predetermined status of said events is attained,determining the scattering value of said events for consecutive combustion charges, and regulating said scattering value towards a set-point value of said scattering by adjusting the composition of said charge. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification