INTERNAL COMBUSTION ENGINE

摘要

An EGR channel and an EGR valve are provided for introducing EGR gas into an intake channel upstream of a compressor that supercharges intake air. There is provided an intake bypass channel that connects the intake channel downstream of the compressor and the EGR channel immediately downstream the EGR valve along the direction of the flow of the EGR gas to each other, and a bypass valve capable of selecting a configuration of an intake air flow channel from among a first channel in which the intake air having passed through the compressor passes through the intake channel and flows into a cylinder and a second channel in which in the state where the EGR valve is closed, part of the intake air having passed through the compressor passes through the intake bypass channel and the EGR channel and is recirculated to a part upstream of the compressor.

主权项

1. An internal combustion engine, comprising:
a compressor configured to supercharge intake air; an EGR channel that connects an intake channel upstream of the compressor and an exhaust channel to each other; an EGR valve disposed at a point in the EGR channel and configured to adjust a flow rate of EGR gas flowing through the EGR channel; an intake bypass channel that connects the intake channel downstream of the compressor and the EGR channel immediately downstream of the EGR valve along a direction of a flow of the EGR gas; and a flow channel switcher configured to select a configuration of a flow channel of the intake air flowing through the intake channel from among a first flow channel configuration in which the intake air having passed through the compressor passes through the intake channel and flows into a cylinder and a second flow channel configuration in which, in a state where the EGR valve is closed, part of the intake air having passed through the compressor passes through the intake bypass channel and the EGR channel and is recirculated to the intake channel upstream of the compressor.