System and method for operating a diesel engine

摘要

A power generating set includes an engine operable in response to a flow of fuel to produce a flow of exhaust gas. A generator is coupled to the engine and is operable in response to operation of the engine to produce a total electrical power, a primary load is electrically connected to the generator to receive a portion of the total electrical power, and a secondary load is selectively connected to the generator to receive a portion of the total electrical power. An insulated-gate bipolar transistor (IGBT) is positioned to selectively transition between a connected state and a disconnected state. 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.

主权项

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 primary load electrically connected to the generator to receive a portion of the total electrical power; a secondary load selectively connected to the generator to receive a portion of the total electrical power; 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 a particulate filter positioned to receive the flow of exhaust gas from the engine and to filter particulate matter from the exhaust gas, wherein the primary load follows a cyclical pattern, and wherein the IGBT switches between states to selectively connect and disconnect the entire secondary load to maintain an engine parameter above a predetermined value for a predetermined portion of each cycle of the primary load, and wherein the secondary load is positioned within the flow of exhaust gas to heat the flow of exhaust gas before the exhaust gas enters the particulate filter.