HCCI engine intake/exhaust systems for fast inlet temperature and pressure control with intake pressure boosting
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United States of America Patent
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Jan 13, 2004
Grant Date -
N/A
app pub date -
Feb 6, 2003
filing date -
Feb 6, 2003
priority date (Note) -
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Abstract
An intake/exhaust system and a method of controlling intake air temperature and pressure for a dual-mode homogeneous charge compression ignition (HCCI) engine is provided. The system may include an air compressor including at least two output air flow paths, an intercooler for cooling air from one of the air flow paths, and heat exchangers for heating air from another one of the air flow paths. Control valves may be provided for controlling the mass ratio of air through the air flow paths to thereby control temperature and pressure of air supplied to the engine. The first air flow path may direct air to the engine via the intercooler and the second air flow path may direct air to the engine via the heat exchangers, whereby, air at first and second controlled temperatures and pressures may be supplied to the engine for operation in SI and HCCI modes.
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