Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1975-12-29
1977-05-10
Lazarus, Ronald H.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123122AB, 123122H, 165105, 261144, 261145, F02M 3100
Patent
active
040221725
ABSTRACT:
A manifold heat exchanger for an internal combustion engine is disclosed as including an enclosed liquid receptacle having a heat receiving portion projecting into an exhaust manifold and a heat dissipating portion projecting into an associated intake manifold. The receptacle is partially filled by a quantity of liquid that is vaporized by heat from the exhaust gases flowing over the heat receiving portion of the receptacle. The vaporized liquid transfers heat to the heat dissipating portion of the receptacle so as to heat a combustible charge flowing within the intake manifold. The intake manifold is preferably located above the exhaust manifold so that gravity normally positions the unvaporized liquid within the heat receiving portion of the receptacle. The liquid receptacle also preferably has a mushroom shape with an elongated lower portion defining its heat receiving portion and a partially spherical upper portion that defines the heat dissipating portion. The spherical heat dissipating portion is impinged by the combustible charge as it enters the intake manifold so as to provide the heating of the charge. A heat shield located within the exhaust manifold concentrates the heat exchange from the exhaust gases to the heat receiving portion of the receptacle. A common attachment member secures both the receptacle and the heat shield to the manifolds.
REFERENCES:
patent: 1990662 (1935-02-01), Moore
patent: 3763838 (1973-10-01), Lindsay et al.
patent: 3935849 (1976-02-01), Mills
patent: 3963012 (1976-06-01), Harned
patent: 3964460 (1976-06-01), Nakano
patent: 3977378 (1976-08-01), Harned
American Motors Corporation
Lazarus Ronald H.
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