Internal-combustion engines – Charge forming device – Heating of combustible mixture
Patent
1999-02-01
2000-02-29
McMahon, Marguerite
Internal-combustion engines
Charge forming device
Heating of combustible mixture
F02M 3300
Patent
active
060296364
ABSTRACT:
A heat exchanger that is connected to a diesel engine's exhaust system in a manner that forces the hot exhaust gases to pass directly through an internal heat exchange chamber. This is accomplished by placing a heat exchanger unit within the body of the air filter canister which is typically installed externally on a truck. This heat exchanger is then connected at its lower end to the primary exhaust system of the truck by means of section of exhaust tubing and at its upper end to a secondary exhaust pipe. Thus, when the hot exhaust gases enter the heat exchanger within the air cleaner, the exchanger is rapidly heated up which serves to heat the air passing through the filter canister prior to its entering the engine. This heated air not only speeds up the warm up process of the engine but also increases the operating efficiency of cold diesel engine because the burning properties of diesel fuel are enhanced at higher temperatures. The diversion of exhaust gases from the primary exhaust system to the heat exchanger is controlled by a weighted vane which is fitted within the exhaust system just behind the point where the heat exchange diversion pipe joins the primary exhaust pipe.
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Harr Curtis V.
McMahon Marguerite
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