Patent ID: 6675579
Filing Date: 2004-01-13
Classification: F01B,F02B,F02M,Y02T

Abstract:
An intake/exhaust system for a dual-mode homogeneous charge compression ignition (HCCI) engine having intake and exhaust manifolds, said system comprising:an air compressor for boosting intake pressure of air supplied to the engine and including at least two output air flow paths; an intercooler for cooling air from a first one of said air flow paths; at least one heat exchanger for heating air from a second one of said air flow paths; and a plurality of control valves for controlling a mass ratio of air through said air flow paths to thereby control temperature and pressure of air supplied to the engine, wherein said first air flow path directs air to the engine via said intercooler and said second air flow path directs air to the engine via said heat exchanger, such that air at a first temperature is supplied to the engine for operation in SI mode and air at a second temperature is supplied to the engine for operation in HCCI mode.