System and method for maintaining heated intake air

Details System and method for maintaining heated intake air System and method for maintaining heated intake air

2007-05-08

2007-05-08

Kwon, John T. (Department: 3747)

Internal-combustion engines

Charge forming device

Heating of combustible mixture

C123S435000

Reexamination Certificate

active

11233171

ABSTRACT:
A system for an internal combustion engine, the engine having an intake and exhaust manifold, the system comprising a heat exchanger configured to extract energy from at least a heat source that heats a first portion of intake air, a spark plug coupled to the engine, an intake passage configured to deliver said first portion of heated intake air to the engine and to deliver a second portion of intake air which bypasses said heat source, and a controller configured to direct said second portion of intake air to the engine at least when utilizing said spark plug to initiate combustion and flame propagation of an air-fuel mixture, and to at least temporarily cause said first portion of intake air to flow during said spark ignition combustion so that a temperature of said first portion of intake air is maintained above a selected value.

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