A fuel heating type fuel filter device having a fuel filter assembly and a fuel heating device connected to the fuel filter assembly. A fuel filter element is housed in the fuel filter assembly. The fuel heating device includes a housing having a fuel passage which is connected to the fuel filter as
A fuel heating type fuel filter device having a fuel filter assembly and a fuel heating device connected to the fuel filter assembly. A fuel filter element is housed in the fuel filter assembly. The fuel heating device includes a housing having a fuel passage which is connected to the fuel filter assembly. A heater is disposed in the fuel passage to heat the fuel and liquify a solidified wax component contained in the fuel. A wax sensor is provided in the housing to sense the amount of solidified wax contained in the fuel. A switch is housed in the housing and turned ON to supply an electric power to the heater when the amount of solidified wax is more than a predetermined value.
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A fuel filter device for filtering fuel supplied to an internal combustion engine comprising: a fuel filter assembly having a casing and a filter element housed therein, said casing having an inlet and an outlet, fuel flowing into said casing through said inlet and passing through said filter elemen
A fuel filter device for filtering fuel supplied to an internal combustion engine comprising: a fuel filter assembly having a casing and a filter element housed therein, said casing having an inlet and an outlet, fuel flowing into said casing through said inlet and passing through said filter element to be filtered and flowing out from said casing through said outlet, a body connected to said casing in a fluid-tight manner, said body having an inlet port communicating with said inlet and an outlet port communicating with the upstream side of said filter element, and a heating device fixed to said body in a fluid-tight manner, said heating device comprising: an electrically grounded fuel housing with a generally longitudinal axis and having therein a fuel chamber through which fuel flows to said filter element, and a switch chamber separate from said fuel chamber, electrical means for heating the fuel flowing through said fuel chamber and having two terminals, one of said terminals being electrically connected to said fuel housing, a snap action type switch in said switch chamber, and an electric power source having a positive pole connected to said switch and a grounded negative pole, said switch comprising: a fixed contact, a movable contact connected to said positive pole, a plate member deformable with a snap action, a rod extending between said movable contact and said plate member to transmit said snap action to said movable contact, a pressure-responsive diaphragm having one side thereof connected to said plate member, a displacement of said diaphragm being transmitted to said plate member, spring means urging said diaphragm and said plate member to displace and deform respectively in a direction to open said contacts, and a switch housing enclosing said contacts, said plate member, said rod and said diaphragm, said switch housing being electrically insulated from said fuel housing and being electrically connected to said fixed contact and to the other of said heating means terminals, whereby said switch housing acts as a positive pole with respect to said heating means, passage means in said assembly exposing the other side of said diaphragm to the pressure of the fuel downstream of said filter element, when said pressure being lower than a predetermined value said diaphragm being displaced against the urging of said spring in a direction to close said contacts to supply electric power to said heating means through said contacts, said switch housing, said heating means, and said fuel housing, in that order, so that said heating means heats the fuel flowing through said fuel chamber, said chambers, said plate member, said rod, said spring means, said switch housing, and said heating means being generally aligned along said axis of said housing.
Hutchins Charles K. (East Providence RI) Thornton Donald I. (East Providence RI) Peyton Richard H. (East Providence RI), Separating device and cartridge therefor.
Parra Navarrete, Alberto; Baz, Alfonso; Hager, Bernhard; Blasco Remacha, Carlos J.; Brielmann, Volker; Bernegger, Leopold, Filter device with a heater.
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