Low-pressure-loop exhaust recirculation apparatus of engine
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United States of America Patent
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Apr 17, 2018
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N/A
app pub date -
Aug 28, 2014
filing date -
Sep 20, 2013
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Abstract
A low-pressure-loop EGR apparatus of an engine includes an EGR passage to allow part of exhaust gas discharged from a combustion chamber to return as EGR gas to the combustion chamber, and an EGR valve to regulate a flow of EGR gas in the EGR passage. This passage has an inlet connected to an exhaust passage downstream of a turbine and an outlet connected to an intake passage upstream of a compressor. In the intake passage, an intake bypass passage is provided to connect an upstream portion and a downstream part from the compressor. An ABV is provided in the passage. To remove EGR gas remaining in the ABV, one end of a residual gas removal passage is connected to the intake passage downstream of a throttle valve and the other end of the same passage is connected to the ABV.
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