Negative pressure generator and fuel tank ventilation
AssigneeWOCO Industrietechnik GmbH
InventorsJan Felix Neumann, Caroline Schäfers, David Andel
Life of this patent
Estimating the term…
Abstract
A vacuum generator for fuel tank ventilation may include a fluid feed-through body having at least two plastic parts, in particular plastic shells. The fluid feed-through body may have an overpressure conduit section connectable to an overpressure source, in particular downstream of a turbo charger and downstream of a throttle valve of a motor vehicle engine, an intake conduit section connectable to the fuel tank and a delivery conduit section connectable to a motor vehicle engine, and a venturi nozzle into which the overpressure conduit section opens. The intake conduit section may open into a vacuum side of the venturi nozzle. At least the venturi nozzle may be made of a plastic piece.
Claims19
A vacuum generator for fuel tank ventilation, comprising:
- a fluid feed-through body including at least two plastic parts, the fluid feed-through body having:
- an overpressure conduit section adapted to be connected to an overpressure source,
- an intake conduit section adapted to be connected to the fuel tank, and
- a delivery conduit section adapted to be connected to a motor vehicle engine;
- and
- a venturi nozzle into which the overpressure conduit section leads, wherein the intake conduit section leads into a negative pressure side of the venturi nozzle, and wherein at least the venturi nozzle is made of one plastic piece.
A fuel tank vent for a motor vehicle, comprising:
- a fuel tank including a fluid cleaning element,
- an intake duct fluidly connected to the fuel tank,
- an overpressure duct adapted to be connected to an overpressure source,
- a delivery duct adapted to be connected to a motor vehicle engine, and
- a vacuum generator adapted to be fluidically connected to the intake duct, the delivery duct, and the overpressure duct.
A vacuum generator, comprising:
- a fluid feed-through body including at least two plastic parts, the fluid feed-through body having:
- an overpressure conduit section adapted to be connected to an overpressure source,
- an intake conduit section, and
- a delivery conduit section;
- and
- a venturi nozzle into which the overpressure conduit section leads, the venturi nozzle being made of one plastic piece and having a negative pressure side, wherein the intake conduit section leads into the negative pressure side of the venturi nozzle.
Dependencies are inferred from the claim text.