Abstract:
A positive crankcase ventilation valve includes a flow restrictor movable in an orifice to vary flow of fumes from a crankcase to an intake manifold in a vehicle. The valve also includes a wax motor for moving the flow restrictor in the orifice.
Abstract:
An apparatus is provided for filling an engine cooling system (10) with coolant and for controlling fluid flow through the system (10) using three weirs (110, 111) in response to temperature. The apparatus indludes a fill housing (18) having an inlet section (52) forming a valve seat (90) and a flange (54) for connection to an engine (16), an outlet section (56), and a fill section (58) configured to receive a cap (32). A thermostat (68) is coupled to flange (54) by a retaining frame (82). A venturi portion (62) is located between the inlet section (52) and the outlet section (56), and adjacent the fill section (58) to provide a pressure drop.
Abstract:
A thermostat apparatus is provided. The thermostat apparatus comprises a thermostat and a positioner for establishing different operating temperatures for the thermostat.
Abstract:
A thermostat apparatus (10) includes a stationary valve member (20) configured to be positioned in a conduit (16) of an engine cooling system. The stationary valve member (20) includes a valve seat (50) extending in a direction generally parallel to a longitudinal axis (60) of the thermostat (10). The apparatus (10) also includes a movable valve member (34) for engaging the valve seat (50) to block the flow of fluid past the stationary valve member (20). The movable valve member (34) includes an annular, cylindrically shaped body portion (44) having an outer side wall (58), a top surface (62), and an inner side wall (68). The outer side wall (58) of the body portion (44) extends in a direction generally parallel to the longitudinal axis (60) and is configured to engage the valve seat (50) of the stationary valve member (20) to block fluid flow past the stationary valve member (20). The movable valve member (34) is formed to include at least one three-dimensional weir (52, 70, 76, 78, 82, or 86) configured to permit fluid flow through the at least one weir (52, 70, 76, 78, 82, or 86) as the movable valve member (34) moves away from the valve seat (50).
Abstract:
A fail-safe thermostat (10, 70) includes a stationary valve member (24) configured to be positioned between conduit components (12, 20) of the engine cooling system, a movable valve member (38) for engaging a valve seat (28) to block fluid flow into a conduit (22) through an opening formed by valve seat (28), an operating spring (48) for biasing the movable valve member (38) to a closed position against the valve seat (28) of the stationary valve member (24), and a thermally responsive actuator (32) for moving the movable valve member (38) to an open position away from a valve seat (28) when the ambient temperature exceeds a first predetermined temperature to permit fluid flow into the conduit (22). The apparatus further includes a bimetallic frame member (46) coupled to the stationary valve member (24). The frame member (46) is configured to compress and hold the operating spring (48) in engagement with the movable valve member (38). The frame member (46) is configured to disengage itself from the stationary valve member (24) when the ambient temperature exceeds a second predetermined temperature and upon failure of the movable valve member (38) to move to its open position.
Abstract:
A thermostat apparatus (11) is provided. The thermostat apparatus (11) comprises a thermostat (34) and a positioner (66) for establishing different operating temperatures for the thermostat (34).
Abstract:
An apparatus is provided for controlling the temperature of an engine (28) based on a temperature control signal (20) related to an optimum engine temperature generated by an electronic control module (10) using an output signal from at least one sensor (14). A controller (22) generates an output signal (26) based on a temperature control signal (20) received from the electronic control module (10) and on a signal (24) proportional to the actual engine temperature received from an engine temperature sensor (14). The apparatus also includes an electronically actuated thermostat (24) including a valve (46) located within a coolant flow passageway (40) of the engine block (38) and a motor (44) electrically coupled to the controller (22) for controlling the valve (46).