Internal-combustion engines – Charge forming device – Cooling of combustible mixture
Patent
1989-04-26
1990-05-15
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Cooling of combustible mixture
165156, 123514, F02M 3120
Patent
active
049248383
ABSTRACT:
In combination with a diesel engine, an engine air intake conduit leading preferably to a turbocharger, a source of fuel, and a circuitous fuel path supplying fuel to the engine from the source and returning uncombusted fuel from the engine to the source, is a fuel cooler. The fuel cooler is mounted within the engine air intake conduit upstream of the turbocharger, if present, in a manner allowing intake air to flow through a central passageway of the cooler to the turbocharger. The fuel cooler is further engaged within the circuitous fuel path in a manner allowing heated fuel to travel through a peripheral passageway formed in the fuel cooler. The peripheral passageway is contiguous to the central passageway whereby heat from the heated fuel is transferred to the intake air, thus cooling the fuel. The fuel cooler is used preferably in cooling uncombusted diesel fuel being returned toward the storage tanks of a vehicle from the engine. The fuel cooler comprises an elongate cylindrical body including an integrally molded heat exchanger therein. The heat exchanger has a continuous, convoluted inner wall defining a central passageway therewithin which extends longitudinally through the elongate cylindrical body. The elongate cylindrical body also has a tightly spiralled peripheral passageway cored therein, an inner surface of which forms an outer wall of the heat exchanger. The elongate cylindrical body also has two ports therein, each positioned toward an opposite end of the cylindrical body and opening into and communicating with the cored peripheral passageway.
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AuBuchon F. David
Macy M.
Navistar International Transportation Corp.
Sullivan Dennis K.
Wolfe Willis R.
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