System and method for operating a diesel engine
First Claim
1. A power generating set comprising:
- an engine operable in response to a flow of fuel to produce a flow of exhaust gas;
a generator coupled to the engine and operable in response to operation of the engine to produce a total electrical power;
a temperature probe configured to measure a temperature of the exhaust gas;
a primary load electrically connected to the generator to receive a portion of the total electrical power, the primary load having a cyclical pattern;
a secondary load selectively connected to the generator to receive a portion of the total electrical power; and
an insulated-gate bipolar transistor (IGBT) positioned to selectively transition between a connected state and a disconnected state, wherein the secondary load is connected to the generator when the IGBT is in the connected state and is disconnected from the generator when the IGBT is in the disconnected state, and wherein in response to the measured temperature of the exhaust gas by the temperature probe, the IGBT switches between states to raise or lower the temperature of the exhaust gas.
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Accused Products
Abstract
A power generating set includes an engine operable in response to a flow of fuel to produce a flow of exhaust gas, a generator coupled to the engine and operable in response to operation of the engine to produce a total electrical power, and a primary load electrically connected to the generator to receive a portion of the total electrical power, the primary load having a cyclical pattern. A battery bank is selectively connected to the generator to receive a portion of the total electrical power and an insulated-gate bipolar transistor (IGBT) is positioned to selectively transition between a connected state and a disconnected state. The battery bank is connected to the generator to charge the battery bank when the IGBT is in the connected state and is disconnected from the generator when the IGBT is in the disconnected state.
15 Citations
19 Claims
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1. A power generating set comprising:
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an engine operable in response to a flow of fuel to produce a flow of exhaust gas; a generator coupled to the engine and operable in response to operation of the engine to produce a total electrical power; a temperature probe configured to measure a temperature of the exhaust gas; a primary load electrically connected to the generator to receive a portion of the total electrical power, the primary load having a cyclical pattern; a secondary load selectively connected to the generator to receive a portion of the total electrical power; and an insulated-gate bipolar transistor (IGBT) positioned to selectively transition between a connected state and a disconnected state, wherein the secondary load is connected to the generator when the IGBT is in the connected state and is disconnected from the generator when the IGBT is in the disconnected state, and wherein in response to the measured temperature of the exhaust gas by the temperature probe, the IGBT switches between states to raise or lower the temperature of the exhaust gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power generating set comprising:
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a generator operable to produce electrical power; an engine operable in response to a flow of fuel to drive the generator and to produce a flow of exhaust gas having an exhaust gas temperature; a particulate filter positioned to receive the flow of exhaust gas from the engine and to filter particulate matter from the exhaust gas; a primary load electrically connected to the generator to draw a first portion of electrical power from the generator, the primary load having a cyclical pattern; a battery bank selectively connected to the generator to selectively draw a second portion of electrical power; a switching element operable to selectively transition between a connected state and a disconnected state, wherein the battery bank is connected to the generator when the switching element is in the connected state and is disconnected from the generator when the switching element is in the disconnected state; and a controller operable to vary the state of the switching element to maintain the sum of the first portion of electrical power and the second portion of electrical power above a predetermined value for a predetermined portion of each cycle of the primary load such that the heat from the flow of exhaust is sufficient to one of passively regenerate or actively regenerate the particulate filter. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A power generating set comprising:
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a generator operable to produce a total electrical power; an engine operable in response to a flow of fuel to drive the generator and to produce a flow of exhaust gas having an exhaust gas temperature; a particulate filter positioned to receive the flow of exhaust gas from the engine and to filter particulate matter from the exhaust gas; a primary load electrically connected to the generator to receive a first portion of the total electrical power that varies in a series of cycles between a maximum that is above a predetermined value and a minimum that is below a predetermined value; a battery bank electrically connected to the generator to receive a second portion of the total electrical power; a switching element operable to selectively transition between a connected state and a disconnected state, wherein the battery bank is connected to the generator when the switching element is in the connected state and is disconnected from the generator when the switching element is in the disconnected state; and a controller operable to vary the state of the switching element to maintain the sum of the first portion of the total electrical power and the second portion of the total electric power above the predetermined value for a portion of each cycle, the portion of each cycle being sufficient to one of passively regenerate or actively regenerate the particulate filter. - View Dependent Claims (16, 17, 18, 19)
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Specification