An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

A valve assembly for influencing operating fluid flows in a motorized vehicle, where the valve assembly includes: A valve housing with a main housing body and a housing lid, A fluid line arrangement with at least two fluid lines, A valve body configured as tapering along an actuating axis which is accommodated rotatably about the actuating axis between at least two fluid lines of the fluid line arrangement in such a way that through rotation of the valve body about the actuating axis, a flow-connection state of the at least two fluid lines proceeding in different spatial regions with each other is modifiable, and A pre-tensioning means arranged between the housing lid and the valve body which loads the valve body along the actuating axis,
wherein it is provided that between the valve body and the main housing body there is arranged a guide shell surrounding the valve body, where the valve body is loaded through the pre-tensioning means towards the guide shell along a first pre-tensioning force path, where the guide shell is loaded through the housing lid towards the main housing body along a second pre-tensioning force path.

A stopcock for a channel that guides a flux medium in a medical endoscope, the stopcock having a housing accommodating a plug rotatable about an axis in a conical seat penetrated by the channel, wherein the housing has a bearing collar adjacent to the conical seat in the direction of the axis, in which bearing collar a handle body is mounted to be rotatable about the axis, the handle body supporting a handle outside the housing and rotationally coupled to the plug displaceable in direction of the axis and resiliently supported relative thereto, wherein the handle body has a radially elastic detent device engaging a circumferential inner groove of the bearing collar to be locking in direction of the axis, wherein the plug is arranged and configured bring the detent device out of engagement with the bearing collar upon displacement in direction of the axis into an unlocked position.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

A valve is provided. The valve includes a body provided with fluid passages for circulating fluid therein. The body has a body interface with ports connected to the fluid passages. The valve also includes a valve element having a valve element interface facing the body interface. The valve element can move between different positions so as to permit or obstruct communication between the fluid passages. A biasing element biases the valve element interface against the body interface. A load varying mechanism is provided to load the biasing element with different sealing load forces according to the different positions of the valve element. The sealing load force applied on the rotor is thus decreased during rotation, reducing friction between the valve body and the valve element.

A rotary airlock valve has a housing having an internal horizontal taper, a mating rotor within the housing, a circular groove in each end of said rotor with a compression O-ring situated therein, a pair of compression plates within the housing, each having a circular projection adapted to contact a compression O-ring in one of the circular grooves, end plates fixed to the housing by shoulder bolts situated in and extending through the end plates, the shoulder bolts being adapted to exert compressive force on the O-rings to balance the rotor within the housing. The rotor is plastic or coated metal, the plastic rotor being utilized for lower temperature applications, i.e, ambient temperature to about 600 F., and the coated metal rotors being utilized for higher temperature (about 600 to 1200 F.) applications. There are no metal to metal moving parts. The invention can be utilized by an airlock, mass measurement feeder, control valve, or on-off valve.