Multi Injector Thermal Management System and Method
First Claim
1. A system comprising:
- a crankshaft position sensor that measures an angular position of a crankshaft in an engine; and
an injector control module that;
controls a first fuel injector and a second fuel injector to inject fuel into a first cylinder of the engine based on the measured crankshaft position;
controls the first fuel injector based on a first target injection parameter once every N firing cycles of the first cylinder, wherein the first target injection parameter includes at least one of a first pulse width and a first start-of-injection (SOI) timing, and N is equal to the number of fuel injectors that are operable to inject fuel into the first cylinder;
controls the first fuel injector based on a second target injection parameter once every N firing cycles of the first cylinder, wherein the second target injection parameter includes at least one of a second pulse width and a second SOI timing that are different than the first pulse width and the first SOI timing, respectively;
controls the second fuel injector based on the first target injection parameter once every N firing cycles of the first cylinder; and
controls the second fuel injector based on the second target injection parameter once every N firing cycles of the first cylinder.
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Accused Products
Abstract
A system according to the present disclosure controls first and second fuel injectors to inject fuel into a cylinder of an engine based on a measured crankshaft position. The system controls the first and second fuel injectors based on a first target injection parameter once every N firing cycles of the cylinder, where N is equal to the number of fuel injectors that are operable to inject fuel into the cylinder. The first target injection parameter includes at least one of a first pulse width and a first start-of-injection (SOI) timing. The system controls the first and second fuel injectors based on a second target injection parameter once every N firing cycles of the cylinder. The second target injection parameter includes at least one of a second pulse width and a second SOI timing that are different than the first pulse width and the first SOI timing, respectively.
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Citations
30 Claims
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1. A system comprising:
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a crankshaft position sensor that measures an angular position of a crankshaft in an engine; and an injector control module that; controls a first fuel injector and a second fuel injector to inject fuel into a first cylinder of the engine based on the measured crankshaft position; controls the first fuel injector based on a first target injection parameter once every N firing cycles of the first cylinder, wherein the first target injection parameter includes at least one of a first pulse width and a first start-of-injection (SOI) timing, and N is equal to the number of fuel injectors that are operable to inject fuel into the first cylinder; controls the first fuel injector based on a second target injection parameter once every N firing cycles of the first cylinder, wherein the second target injection parameter includes at least one of a second pulse width and a second SOI timing that are different than the first pulse width and the first SOI timing, respectively; controls the second fuel injector based on the first target injection parameter once every N firing cycles of the first cylinder; and controls the second fuel injector based on the second target injection parameter once every N firing cycles of the first cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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measuring an angular position of a crankshaft in an engine; and controlling a first fuel injector and a second fuel injector to inject fuel into a first cylinder of the engine based on the measured crankshaft position; controlling the first fuel injector based on a first target injection parameter once every N firing cycles of the first cylinder, wherein the first target injection parameter includes at least one of a first pulse width and a first start-of-injection (SOI) timing, and N is equal to the number of fuel injectors that are operable to inject fuel into the first cylinder; controlling the first fuel injector based on a second target injection parameter once every N firing cycles of the first cylinder, wherein the second target injection parameter includes at least one of a second pulse width and a second SOI timing that are different than the first pulse width and the first SOI timing, respectively; controlling the second fuel injector based on the first target injection parameter once every N firing cycles of the first cylinder; and controlling the second fuel injector based on the second target injection parameter once every N firing cycles of the first cylinder. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification