Power System Comprising an EGR System

摘要

A power system including an engine, an intake system, an exhaust system, and an EGR system. The intake system is coupled to the engine and receives a fresh intake gas, the fresh intake gas having a fresh intake gas pressure. The exhaust system is coupled to the engine and expels an exhaust gas, the exhaust gas having an exhaust gas pressure. The EGR system is positioned so as to couple the intake system and the exhaust system. The EGR system does not comprise an EGR cooler. The EGR system bypasses periodically a portion of the fresh intake gas around the engine, from the intake system to the exhaust system, when the fresh intake gas pressure is greater than the exhaust gas pressure.

主权项

1. A power system, comprising:
an engine; an intake system being coupled to the engine and configured to receive a fresh intake gas, the fresh intake gas having a fresh intake gas pressure; an exhaust system being coupled to the engine and configured to expel an exhaust gas, the exhaust gas having an exhaust gas pressure; and an exhaust gas recirculation (“EGR”) system, the EGR system being positioned so as to couple the intake system and the exhaust system, the EGR system not comprising an EGR cooler, and the EGR system being configured to bypass periodically a portion of the fresh intake gas around the engine, from the intake system to the exhaust system, when the fresh intake gas pressure is greater than the exhaust gas pressure.