EGR and blow-by flow system for highly turbocharged diesel engines
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United States of America Patent
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Mar 18, 1997
Issued Date -
N/A
app pub date -
Jun 27, 1996
filing date -
Nov 12, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A gas flow network in combination with a highly turbocharged diesel engine for the blending of either EGR gas or blow-by gas from the crankcase vent with fresh charge air is disclosed. In the diesel engine assembly which incorporates the flow network for EGR gas, a venturi conduit and control valve combination is positioned between tile intake manifold and aftercooler and is connected to a flow line carrying the EGR gas. When the turbocharged diesel engine assembly is configured with a flow path for blow-by gas, the venturi and control valve combination is positioned between the intake manifold and aftercooler and is connected to a flow line carrying blow-by gas. These systems utilize a low static pressure at the narrow throat of the venturi so as to induce the flow of EGR gas or blow-by gas into the fresh charge air, the flow being controlled by the state of the control valve.
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