Abstract:
A check valve is described for a gas-carrying line in a motor vehicle, in particular for the venting of a crankcase, having a valve housing which has a valve seat, a valve disk which abuts against the valve seat in a closed position and an electric heating device for heating the valve housing, wherein the valve disk is integrally configured with a spring and fastening section that is fixed to the valve housing and generates a closing force that presses the valve disk against the valve seat, and wherein the valve housing has a metal body, which forms the valve seat and on its outside forms a thermal coupling surface, on which the electric heating device sits and which extends together with the electric heating device beyond the valve seat both in the flow direction and in the opposite direction.
Abstract:
Provide is a PCV valve which can be quickly defreezed and provides a favorable sealing to the heater against the blow-by gas. The PCV valve (2) comprises a housing (6) defining a flow passage (4) for blow-by gas, a valve member (30) positioned in the flow passage to cooperate with a valve seat (18) formed in the housing, a spring (38) biasing the valve member toward the valve seat, a heat transmission member (40) including a heat dissipating part (42) surrounding the valve member, and a heating unit (52) including a heating element (66) for heating the heat transmission member, the heating element being separated from the flow passage in an air tight manner.
Abstract:
A heating device of a PCV valve includes a PCV valve, a conduit and a bush. The PCV valve contacts the bush. The bush includes an outward protrusion. The outward protrusion includes a curved surface contacting an outside surface of the conduit in a manner of a surface-to-surface contact. Therefore, when the conduit is heated by engine cooling water, the bush contacting the conduit in the manner of a surface-to-surface contact is heated and the PCV valve contacting the bush is heated. Therefore, the PCV valve can be heated by the engine cooling water.
Abstract:
A heating device of a PCV valve includes a PCV valve, a conduit and a bush. The PCV valve contacts the bush. The bush includes an outward protrusion. The outward protrusion includes a curved surface contacting an outside surface of the conduit in a manner of a surface-to-surface contact. Therefore, when the conduit is heated by engine cooling water, the bush contacting the conduit in the manner of a surface-to-surface contact is heated and the PCV valve contacting the bush is heated. Therefore, the PCV valve can be heated by the engine cooling water.
Abstract:
Provided are an arrangement capable of reliably preventing freeze of a PCV channel without requiring additional piping and an intake manifold having this arrangement. This arrangement for freeze prevention of a PCV channel includes a PCV channel returning blowby gas containing un-combusted fuel gas as a main component thereof and leaked into an engine to an intake port, an EGR channel returning exhaust gas exhausted from the engine to the intake port, and a heating portion as a common portion between a PCV outer wall of the PCV channel and an EGR outer wall of the EGR channel.
Abstract:
A PCV valve assembly including housing having a fluid inlet and outlet. A poppet valve is disposed in the housing between the fluid inlet and outlet and is moveable in an axial direction between a plurality of positions. A heating element having a positive temperature coefficient material is supported in the housing in proximity to at least a portion of the valve for automatically heating the valve in response to a given voltage. The material produces a first heat in response to a first temperature and the given voltage. The material produces a second heat less than the first heat produced in response to the given voltage and a second temperature greater than the first temperature. That is, the positive temperature coefficient material automatically regulates the flow of current and the temperature produced without the need of a thermostat in response to the same voltage. A hose may also be used defining an air passageway and having a length is connected between the fluid outlet and an intake manifold respectively at first and second connections. The hose has a heating element arranged substantially along the length for applying heat to the bare passageway. An electrical device is connected to the heating element for providing power to the heating element to generate heat. In this manner, air entering the intake manifold in proximity to the throttle blade is heated to maintain a higher temperature to prevent blade icing.
Abstract:
A positive crankcase ventilation (PCV) valve having a housing and a valve and spring assembly. The housing may be constructed of an electrically conductive material and include an electrode integrated therein. The valve and spring assembly is disposed within the housing. The valve and spring assembly may be constructed of a metallic or a plastic material. The housing receives an electrical signal from a power source via the electrode. The electrical signal applied to the housing causes an increase in housing temperature thereby preventing freezing of the valve and spring assembly within the PCV valve.
Abstract:
Several embodiments of fittings or couplings for the crankcase ventilating gas return to the combustion chambers through the induction system. They each provide good insulation so as to avoid the likelihood that water condensation in the path can freeze and restrict the ventilating flow.
Abstract:
A thermal management system for a positive crankcase ventilation (PCV) system of an engine is provided. The inventive system includes a heat pipe having one end coupled to a heat source such as the cylinder head of the engine. The heat pipe is then configured to be in thermal contact with one or more components of the PCV system, such as the PCV valve or a hose. The present invention further provides a vehicle subassembly comprising a PCV valve and a heat pipe routed through the PCV valve. The subassembly may further include a hose coupled to the PCV valve.
Abstract:
The present technology provides methods and systems for reducing ice buildup in a closed engine breather system. The systems comprise an air inlet duct, a compressor wheel and a compressor cover. The compressor cover comprises a breather gas port. The breather gas port is placed in the compressor cover at a location within close proximity to the leading edge of the compressor wheel so that the compressor wheel is capable of removing ice that accumulates at the breather gas port. The present technology also provides methods that include providing an air inlet duct, a compressor wheel, and a compressor cover with a breather gas port in the compressor cover. In this manner the compressor wheel can grind or shave off ice that accumulates at the breather gas port.