Heatable throttle device for internal combustion engines
AssigneeRobert Bosch GmbH
InventorMarkus Michels
Life of this patent
Estimating the term…
Abstract
A device for mixture preparation in internal combustion engines, in which a fluid flow flows through a flow cross section of a bore, and the fluid flow is meterable by means of an actuatable throttle element, which is pivotable in a receiving bore of a housing. Between a wall of the bore and the outer circumference of the housing, hollow chambers for a heating or cooling medium are embodied in this housing.
Claims11
In a device for mixture preparation in internal combustion engines, in which a fluid flow flows through a flow cross section (1) of a bore (8), and the fluid flow is meterable by means of an actuatable throttle element, which is pivotable in a receiving bore (4) of a housing (2), the improvement wherein, between a wall (9) of the bore (8) and the outer circumference of the housing (2), hollow chambers (11) for a heating or cooling medium are embodied in the housing, wherein the hollow chambers (11) are separated from one another by ribs (16, 17).
A method for producing a throttle valve housing (12) of a throttle valve device in the intake system of an internal combustion engine, comprising casting or injection-molding the throttle valve housing (2) with hollow chambers (11) separated from one another by ribs (16, 17) integrally formed therein for the passage of a heating or cooling medium, the hollow chambers extending in the flow direction (13) of a fluid flow.
Dependencies are inferred from the claim text.