A method of detecting fluid flow through a solenoid valve in a fluid application system includes dispensing fluid through the solenoid valve, de-energizing a solenoid coil of the solenoid valve to close the solenoid valve and control a fluid flow through the solenoid valve, determining a closing time of the solenoid valve based on a signal from a poppet measuring sensor, determining a time delay between the de-energizing the solenoid coil and the closing time, and determining a fluid flow value based on the time delay.

A method of controlling a solenoid valve having a solenoid coil and a poppet includes energizing a first node to a first voltage, and coupling the first node to the solenoid coil and energizing the solenoid coil using a pulse-width-modulated (PWM) signal having a frequency and a duty cycle configured to regulate a current conducted through the solenoid coil to below an opening threshold. The method further includes energizing a second node to a second voltage with energy stored in the solenoid coil, and coupling the second node to the solenoid coil and energizing the solenoid coil using a DC signal configured to increase the current to above the opening threshold. The method further includes coupling the first node to the solenoid coil and energizing the solenoid coil using the PWM signal having a frequency and duty cycle configured to regulate the current to above a closing threshold.

The present invention relates to a portable spay device and, more specifically, to a portable spray device moving a cartridge member by means of a simple rotational motion of a spray rotating body, thereby enabling powder positioned inside the cartridge member to be effectively sprayed to the outside.

The present disclosure provides a flow control valve for controlling the flow of a cleaning media, such as controlling the flow of cleaning media to a nozzle positioned to distribute the cleaning media to a vehicle surface. The flow control valve includes a plunger and a flexible diaphragm which operate to open and close the a fluid passage through the valve. Vehicles and systems incorporating a flow control valve are also provided.

An injection control device controls a solenoid in a fuel injection valve. The injection control device includes a transistor on an upstream side of a first power supply path to the solenoid, and a transistor on an upstream side of a second power supply path to the solenoid. The injection control device has another transistor with a body diode arranged in parallel at a position between an upstream terminal of the solenoid and ground. The injection control device also includes a transistor on the downstream side of the first and second power supply paths. A drive controller in the injection control device drives the solenoid to an open position by switching ON the transistor on the downstream side and one of the transistors on the upstream side power supply paths.

A method of dispensing fluid from an apparatus includes determining a phase offset to separate actuation of a plurality of valve sub-sets into phases and determining a sub-phase offset to separate actuation of valves within each of the plurality of valve sub-sets. The method also includes sequentially actuating valves in a first sub-set based on the sub-phase offset, and sequentially actuating valves in a second sub-set based on the phase offset and the sub-phase offset such that (i) at least one valve in the second sub-set is actuated out of phase from a preceding valve in the first sub-set by the phase offset; and (ii) the at least one valve in the second sub-set is actuated out of phase from a preceding valve in the second sub-set by the sub-phase offset.

A valve for metering a fluid, including an electromagnetic actuator and a valve needle which is actuatable by an armature of the actuator and used to actuate a valve closing body which cooperates with a valve seat surface to form a seal seat. The armature is movably guided at the valve needle in the process. A stop element connected to the valve needle limits a relative movement between the armature and the valve needle in connection with an actuation of the valve needle. At least one elastically deformable spacer element is provided between the armature and the stop element, which, during the limitation of the relative movement between the armature and the valve needle at the stop element, encloses an attenuation space provided between a front face of the armature and a stop element surface of the stop element facing the front face of the armature.

A valve includes an electromagnetic actuator, which has an armature in an armature space and guided on a valve needle operable by the actuator using the armature. A first and a second stop element that interact with a first and second end face, respectively, of the armature are situated on the valve needle. The armature has a spring receptacle, which is open towards the first end face of the armature, and into which a spring is inserted. The armature has at least one fluid channel, which, during operation, allows fluid to pass through between first and second regions of the armature space at the first and second end faces, respectively, of the armature. The fluid channel incorporates at least part of the spring receptacle. Sections of the fluid channel run radially outwards along a direction oriented from the first to the second end face and coaxial to a longitudinal axis.

A method for emitting a fluid from an aerial fluid dispersal system includes emitting the fluid from a plurality of individually controlled nozzle assemblies distributed across a manifold assembly. The method also includes receiving, at a controller, an input associated with a desired droplet size of the fluid emitted from each respective nozzle assembly and determining, by the controller, a target differential fluid velocity for each respective nozzle assembly based on the desired droplet size. The method also includes regulating, using the controller, the velocity of the fluid exiting each respective nozzle assembly to produce the target differential fluid velocity from each respective nozzle assembly.

Disclosed is a solenoid valve for spray bark stopper, which relates to the technical field of pet products. The solenoid valve is horizontally installed in a length direction of a bark stopper. The output end of the solenoid valve is provided with a convex body, and the convex body is used for connecting the flexible connecting pipe. By adopting the above technical solution, the flexible connecting pipe can be connected to the solenoid valve through the convex body at one end thereof, and then the output end of the solenoid valve is connected to the spout of the bark stopper, thereby changing the spray direction of the solenoid valve, so that the gas from the solenoid valve is sprayed from the spout of the middle of the bark stopper through the flexible connecting pipe and acts on the pet.