Patent ID: 7860381
Filing Date: 2010-12-28
Classification: F02M,Y02T

Abstract:
1. Heating device for diesel fuel comprising at least one PTC heating element, at least two contact sheets to conduct a heating current through the at least one PTC heating element, the contact sheets each comprising a front face by means of which they contact the PTC heating element electrically, the PTC heating element being provided between the front faces of the two contact sheets; a housing, enclosing an interior space through which the diesel fuel to be heated can flow and in which the PTC heating element and the contact sheets are arranged; characterized in that the front faces of the contact sheets project, on at least one longitudinal side, over the PTC heating element so that a gap is provided between the opposing front faces of the contact sheets; the housing comprises at least one positioning element engaging into the gap and, as a stop, securing the PTC heating element against lateral displacement; and the contact sheets each have at least one leg bent away from the front face and being pressed into the housing with prestress so that the front faces of the contact sheets are pressed against the PTC heating element by spring forces exerted by the legs.