2273 results about "Shuttle valve" patented technology

A system and method for providing operational control and/or remote monitoring of a manufacturing device as in a foam dispenser device such as a foam-in-bag dispensing device. In architecture, the remote monitoring system includes a server device containing a remote monitoring system. The remote monitoring system further includes a transceiver to receive an indication of a help condition, connect to the manufacturing device; and receive data from the manufacturing device. The present invention can also be viewed as a method for providing remote monitoring of a manufacturing device. The method operates by (1) receiving an indication of a help condition; (2) connecting to the manufacturing device; and (3) receiving data from the manufacturing device. The operational control system is designed to control operation of one or more sub-systems of the manufacturing device as in a foam dispenser's chemical supply (proper temperature and pressure) and solvent supply as well as performance of a reciprocating valve device. With a foam-in-bag system, the control system provides for additional control over, for example, film feed and tensioning, bag edge and end seals as well as dispenser output into the bag. In a preferred embodiment, the operational control system and remote monitoring control interface with each other.

A storage unit provided in an engine control device stores three kinds of mode maps having different engine output characteristics. One of the mode maps is selected in accordance with the driving conditions, and a target torque is set by referring to the selected mode map using an engine speed and an accelerator opening-degree as parameters. A throttle opening-degree signal corresponding to the target torque is output to a throttle actuator, and an operation of opening or closing the throttle valve is performed in response to the throttle opening-degree signal.

A subsea wellhead assembly has a tubing hanger with a tubing annulus passage and a production passage. A metal-sealing shuttle valve is mounted in the tubing hanger for blocking upward flow through the tubing annulus passage. The shuttle valve has a retention mechanism that prevents the shuttle from moving to the open position when fluid pressure is applied from above. The retention mechanism is released by the running tool after testing has been completed, causing the shuttle to close. The tree has an engaging member that can be stroked downward into the tubing hanger annulus passage to move the shuttle valve to the open position for communicating with the annulus.

A system for providing power to elements down-hole in a subsea well includes a control pod having at least one shuttle valve, a down-hole hydraulically-actuated device having at least one internal porting mechanism in fluid communication with the at least one shuttle valve, a blowout preventer stack connected to the down-hole device, the blowout preventer stack including a first ram and a second ram, and a choke line in fluid communication with an area between the first ram and the second ram. The at least one shuttle valve controls distribution of hydraulic pressure applied through the choke line to the internal porting mechanism for selective distribution of power to the hydraulically-actuated device.

A first purge passage is connected to an intake-air passage at a downstream side of a throttle valve. A second purge passage is connected to the intake-air passage at an upstream side of a supercharging device. A first and a second check valve are respectively provided in the first and second purge passages. A control unit determines to which operating condition (from a first to a third operating condition) engine operation corresponds, based on downstream-side and upstream-side pressure of the throttle valve. A change of in-tank pressure of a fuel tank is detected in a condition that an air-communication valve is closed but a purge control valve is opened. The control unit diagnoses which of the valves is not normally operated and whether such valve is fixed to a valve opened or a valve closed position, based on the change of in-tank pressure for each of engine operating conditions.

The invention provides an electrically controlled pneumatic braking system of a vehicle. The system retains a manual braking function of a manual driving mode while achieving an electrically controlled braking function of an unmanned driving mode of the intelligent vehicle, the manual driving mode and the unmanned driving mode can be switched flexibly, and a remote control braking function is achieved on emergency circumstances. The system comprises a braking controller, a front axle proportional solenoid valve, a front axle shuttle valve, a rear axle proportional solenoid valve, a rear axle shuttle valve and a normally open type two-position three-way solenoid valve. The braking controller is used for receiving upper planning decision commands of the intelligent vehicle; when electrically controlled driving braking needs to be conducted, the braking controller controls the front axle proportional solenoid valve and the rear axle proportional solenoid valve to act, the air pressure output by the front axle shuttle valve is made to be the air pressure of an output port of the front axle proportional solenoid valve, and the air pressure output by the rear axle shuttle valve is made to be the air pressure of an output port of the rear axle proportional solenoid valve; when manual driving braking needs to be conducted, the braking controller enables the front axle proportional solenoid valve and the rear axle proportional solenoid valve to be powered off.

A low pressure EGR regulating valve is driven by an electric actuator, and an output of the electric actuator is transmitted to an intake air throttle valve through a link device. An ECU executes a failure determination to determine presence of a failure in a case where a sensed opening degree, which is sensed with a low pressure EGR opening degree sensor, is other than an opening degree that corresponds to a maximum opening degree of the throttle valve limited by a mechanical stopper. The ECU executes the failure determination after the energization of the electric actuator is stopped in response to stopping of the engine.

The invention discloses a hydraulic excavator flow rate control loop which comprises a hydraulic and electric control loop. The hydraulic excavator flow rate control loop is characterized by comprising two electromagnetic proportional valves and two or-gate type three-way shuttle valve, wherein the electric control ends of the proportional valves are respectively connected with the controller, the input end is connected with a pilot pressure pump of an excavator, the output end is connected with a input opening P1of one three-way shuttle valve, input openings P2 of the two three-way shuttle valves are respectively connected with a front negative feedback valve core and a back negative feedback valve of the excavator, and output openings A of the three-way shuttle valves are respectively connected with a front negative feedback regulator and a back negative feedback regulator. A method comprises the following steps of: receiving sensor signals by a controller; sending electromagnetic proportional valve electric control signals; opening proportional valve and shuttle valve paths; controlling the corresponding negative feedback regulators through the pressure of the proportional valves; and finally controlling the delivery capacity of the pump. The method realizes the limitation on the system delivery capacity through controlling the delivery capacity of the pump by using the electromagnetic proportional valves, so the flow rate maintains the normal state when a rotating or walking device works singly, and the damage to a motor caused by high flow rate is avoided.

A throttle valve assembly is provided, including a throttle valve housing having a bore therethrough and a throttle valve plug assembly. The throttle valve plug assembly includes a shaft rotatably mounted on the throttle valve housing and a throttle valve plug having a concave cut-out portion. The throttle valve plug is mounted on the shaft within the throttle valve housing and substantially perpendicular to the bore. The throttle valve plug has at least two fully open positions and a closed position.

An intake control device for an engine includes a throttle body that defines a throttle bore, which is substantially circular-shaped in cross section, through which intake air flows. A throttle valve is rotatably assembled in the throttle bore of the throttle body. The throttle valve rotates integrally with a shaft. One axial end of the shaft is connected to a rotary driver, so that the rotation angle of the throttle valve is changed via the shaft. The rotary driver defines a fitted hole, to which the one axial end of the shaft is clearance fitted. The rotary driver defines a fitting recess dented radially outward from the hole wall surface of the fitted hole. The one axial end of the shaft includes a coupling that is crimped and fixed to the rotary driver in the state of being fitted to the fitted hole.

A shuttle valve (12,150,230) is provided having a body (44,152,232) defining an interior chamber (46,154,234). The valve (12,150,230) includes inlet (16,158,238), outlet (18,160,240) and common (14,156,236) ports that are coupled to the body (44,152,232). A shuttle (48, 162,242) is translatably disposed within the chamber (46,154,234) between a first position wherein the inlet (16,158,238) and common (14,156,236) ports are fluidicly coupled and the common (14,156,236) and outlet (18,160,240) ports are fluidicly uncoupled, and a second position wherein the outlet (18,160,240) and common (14,156,236) ports are fluidicly coupled and the common (14,156,236) and inlet (16,158,238) ports are fluidicly uncoupled. A first check valve (50,50,50) coupled to the inlet port (16,158,238) to permit fluid flow through the inlet port (16,158,238) into the chamber (46,154,234) and to prevent fluid from discharging therethrough. A second check valve (50,50,50) is coupled to the outlet port (18,160,240) in a manner to permit fluid to discharge from the chamber (46,154,234) through the outlet port (18,160,240) and to prevent fluid from flowing through the outlet port (18,160,240) into the chamber (46,154,234).

The present invention belongs to the field of engineering machinery technology, and the hydraulic tripper of strong rammer includes mechanical unit and hydraulic control system. The mechanical unit consists of oil hydraulic cylinder, link rod, lifting lug, and spring; and the hydraulic control system consists of cartridge inserted valve, non-return valve, oil tank, throttle valve, overflow valve and electromagnetic change-over valve. The present invention needs no manual hanging operation in controlling the rammer descent from any lifted height. The rammer descent is synchronous with tripping course, and tripping is fast, complete, small in impact, and low in the wear of the lifting lug. The present invention is suitable for geotechnical engineering.

It is an object of the present invention to provide a control valve which can reduce the number of external lines connected to a hydraulic remote control valve. A control valve 1 for controlling hydraulic cylinders 2,2' is provided, in one 26 of spool covers, with fluid passages 27,27', a shuttle valve 28 for selecting higher one of pilot pressures to be transmitted to these fluid passages 27,27', and a fluid passage 29 for transmitting the pressure selected by the shuttle valve 28. The fluid passages 27,27' are in communication with pressure fluid ports 25,25' as connection ports for pilot lines 24a,24c. The control valve 1 is also provided, in the other spool cover 32, with fluid passages 33,33', a shuttle valve 34 for selecting higher one of pilot pressures to be transmitted to these fluid passages 33,33', and a fluid passage 35 for transmitting the pressure selected by the shuttle valve 34. The fluid passages 33,33' are in communication with pressure fluid ports 31,31' as connection ports for pilot lines 24b,24d.

A fuel delivery system for an internal combustion engine of the type having an intake manifold selectively fluidly connected to a combustion chamber and a bypass gas flow passageway having an inlet open to the intake manifold and an outlet open to the intake manifold downstream for the inlet is disclosed. The system includes an electronically controlled throttle valve operatively disposed in the intake manifold and movable between an open and a closed position to control air flow through the intake manifold. An idle speed control valve is operatively disposed within the bypass gas flow passageway, and the idle speed control valve is also movable between an open and a closed position to control air flow through the bypass gas flow passageway. A control system controls the actuation of both the throttle valve and idle speed control valve to control the delivery of a combustible charge to the internal combustion engine to maximize engine efficiency and minimize noxious emissions. Optionally, a cold start fuel injector is disposed within the bypass gas flow passageway to provide the fuel charge to the engine during a cold start condition. In an alternate form of the invention, two electronically controlled throttle valves are disposed within the intake manifold to control both the air flow through the intake manifold as well as the air flow through the bypass gas flow passageway.

A dispensing apparatus has a motor drive that moves an output member along an axis in a first chamber. A shuttle valve controls flow between a first chamber and either a reservoir of material or an output port. Extending the output member discharges precise volumes of material through an output port. Retracting the output member fills the first chamber.

An embodiment of an engine is described. The engine includes a first throttle valve. The first throttle valve is provided in a first intake passage coupled to an intake manifold. The first throttle valve has a default closed position. The engine further includes a second throttle valve. The second throttle valve is provided in a second intake passage coupled to the intake manifold. The second throttle valve has a default open position. The engine further includes a venturi pump that is provided between the second throttle valve and the intake manifold. When the second throttle valve is in the default open position, intake air flows through the venturi pump.

A load-sensitive valve comprises a proportional reversing valve, a pressure compensation valve and an enable reversing valve. An oil outlet of the pressure compensation valve is communicated with an oil inlet of the proportional reversing valve, a spring valve of the pressure compensation valve is communicated with a downstream pressure opening of the proportional reversing valve through a downstream pressure detection oil way, and a throttler is arranged on a load feedback oil way of the pressure compensation valve. An oil inlet of the enable reversing valve is communicated with the load feedback oil way of the pressure compensation valve. A single-load sensitive hydraulic system is provided. An oil inlet of the load-sensitive valve is communicated with an oil tank through a load-sensitive pump, and an electronic control opening of the load-sensitive valve is electrically connected with a controller. According to a multi-load sensitive hydraulic system, the oil inlet of the load-sensitive valve in each load execution unit is communicated with the oil tank through the load-sensitive pump, the electronic control opening of the load-sensitive valve in each load execution unit is electrically connected with the controller, and pressure detection openings of the load-sensitive valves are communicated through shuttle valves. Energy losses can be reduced under the work condition that only one execution mechanism works in a system.

An engine control system includes an improved construction that can release an engine from an abnormal engine speed so that, for example, the operator can operate a shift actuator without any overload. The engine includes an air induction system that introduces air to the combustion chamber and includes a throttle valve. The throttle valve admits the air to flow through the air induction system unless placed in a closed position. A throttle valve position sensor is arranged to sense the position of the throttle valve. An engine speed sensor is also arranged to sense a rotational speed of the crankshaft. A control device is provided for slowing down the engine speed based upon a throttle position signal from the throttle valve position sensor and a speed signal from the engine speed sensor. In one operating mode, the slow down control is made when the throttle position signal indicates that the throttle valve is generally at the closed position and the speed signal indicates that the engine speed exceeds a preset speed.

A control apparatus for a hybrid vehicle, which outputs motive power to a drive shaft from an internal combustion engine and motor generators as motive power sources, including: a recirculating gas control portion that performs valve opening control on a recirculation valve so that an amount of recirculating exhaust reaches a control target valve, and that closes the recirculation valve completely when a deceleration request by a driver is detected; a throttle control portion that performs valve closing control on a throttle valve so that the amount of air circulating through an intake pipe decreases at a predetermined speed when the deceleration request issued by the driver is detected; and a braking control portion that controls regenerative braking forces of the motor generators so that at least one of the motor generators absorbs the motive power generated by the engine while valve closing control is executed on the throttle valve.