Internal-combustion engines – Charge forming device – Heating of combustible mixture
Patent
1984-03-21
1985-02-26
Lazarus, Ronald H.
Internal-combustion engines
Charge forming device
Heating of combustible mixture
123549, 210186, F02M 3100
Patent
active
045012555
ABSTRACT:
A heater for diesel fuel filter system has a thermally and electrically conductive heating plate mounted in a housing chamber so that diesel fuel flowing between the chamber inlet and outlet toward a filter normally passes over both sides of the heating plate in heat-transfer relation to the plate. Self-regulating electrical resistance heater discs of a ceramic material of positive temperature coefficient of resistivity are mounted on the plate in thermally and electrically conductive relation to the plate for heating the plate. The heater discs are arranged so that fuel passing through the chamber also flows directly over the heater discs. Groups of spiral segmental baffles are arranged in nested relation to each other on opposite sides of the heating plate to define a plurality of side-by-side spiral fluid flow paths which serve to guide flow of the fuel over substantial lengths of the heating plate surface while also permitting relatively free flow of the diesel fuel through the heater toward the filter unit. The heater heats diesel fuel passing to the filter unit so that, particularly during cold weather, the fuel passes freely through the filter and does not tend to clog the filter due to paraffins or other fuel components tending to solidify in the fuel at low temperatures.
REFERENCES:
patent: 4387691 (1983-06-01), Marcouy
patent: 4406785 (1983-09-01), Siefer
Gerson Philips
Jansen Wim
Van Der Ploeg Arie
Haug John A.
Lazarus Ronald H.
McAndrews James P.
Sharp Melvin
Texas Instruments Incorporated
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