Abstract: A method and an apparatus for regulating a volumetric fuel flow regulate a fuel flow delivered by a feed pump to a high-pressure pump of an injection system as a function of a volumetric fuel discharged from a high-pressure reservoir through a high-pressure regulating valve. The regulation is effected through the use of a pressure regulating valve or a volumetric flow regulating valve.

Abstract: A main pump unit which includes a main pump and a standby pump in a tank is placed on the basement floor, not in a sump. The tank is sealed with the floor level drain, preventing reverse sewer water from flowing onto the floor. The pump (main) turns on before the sewer water from overflowing the appliances, such as toilet and bathtub. The system includes an arrangement for using the customary fresh water supply for testing the pump. It also includes means for ventilating the tank to the exterior.

Abstract: A controlling device ensures an accurate control of the rotational speed of an engine. When a hydraulic working machine is in a suspended state, the rotational speed of the engine can be changed from a designated rotational speed to a low rotational speed without requiring any specific manipulation by the operator. When all control levers 14 to 21 are shifted to their respective neutral positions to suspend the operation, and the shifting speed of the control lever which is lastly shifted to its neutral position is low, a delay time is set to be longer than in the case of high shifting speed. If the control levers 14 to 21 are maintained in their respective neutral positions after the elapse of the delay time, the engine 1 is changed to the low rotational speed mode. When one of control levers is shifted before the elapse of the delay time, the engine 1 is continuously maintained in the designated rotational speed mode.

Abstract: An apparatus for controlling an electrohydraulic system of a work machine having an engine that drives a variable displacement pump is disclosed. A pump displacement setting device produces a pump command signal indicative of a desired displacement of the variable displacement pump. An engine speed setting device produces an engine command signal indicative of a desired rotational speed of the engine. A power manager receives the pump and engine command signals, determines an efficient engine speed and pump displacement, and produces an engine control signal that decreases the engine speed to the efficient engine speed and a pump control signal that increases the pump displacement to an efficient pump displacement, while maintaining a substantially constant pump flow rate.

Abstract: A liquid delivery device which controls the flow of liquid from a liquid reservoir includes a resilient tubing having a wall with a substantially cylindrical cross-section defining a flow lumen. The flow lumen is in fluid communication with the reservoir. A compression member selectively compresses a lengthwise segment of the cylindrical wall to collapse the flow lumen and releases the lengthwise segment to open the flow lumen. An elastomeric sleeve envelopes greater than half an outer diameter of the cylindrical cross-section of the resilient tubing along at least a portion of the lengthwise segment of the cylindrical wall. The elastomeric sleeve biases the lengthwise segment of the resilient tube to restore it to its substantially cylindrical cross-section when the compression member releases the lengthwise segment.

Abstract: A positive displacement pump includes a deformable hollow member for delivering a subject liquid by a cycle of contraction and restoration of its volume, a casing which contains the hollow member, and a pressurizing device for supplying and evacuating a hydraulic liquid in an annular space between the casing and the hollow member. The supplying of hydraulic fluid causes the contraction of the hollow member, and the evacuating of the hydraulic fluid causes the restoration (expansion) of the hollow member. A guide structure contacts and deforms the outer circumferential portions of the hollow member as the hollow member continues to expand to determine an initial contraction position of the hollow member. That is, a particular direction of contraction of the hollow member is set by the guide structure. Drive means periodically vary the circumferential position of the guide means relative to the hollow member to vary the initial contraction position of the hollow member.

Abstract: A hand air pump includes a cylinder having mutually communicated relatively large chamber and relatively small chamber, a mount sealingly mounted on the top of the cylinder and including an air passage communicated with the relatively small chamber, and a pressure gauge pivotally connected to the mount. The pressure gauge is pivotable between a storage a position and an operative position. In addition, the pressure gauge is communicated with the air passage at the storage position and at the operative position. A nozzle is communicated with the air passage for inflation.

Abstract: A control valve in a compressor that adjusts the discharge displacement based on controlling of an inclination of a cam plate. The compressor includes a supply passage for connecting a discharge chamber with a crank chamber. The control valve is placed midway on the supply passage. The control valve has a valve body. The valve body moves in a first direction to open the supply passage and moves in the second direction to close the supply passage. A reacting member reacts to suction pressure. A first transmitting member is placed between the reacting member and the valve body. A solenoid is opposed to the reacting member with respect to the valve body. The solenoid urges the valve body in the second direction via a second transmitting member when the solenoid is excited. An urging device urges the valve body in the first direction, The first transmitting member connects the reacting member with the valve body to move the valve body toward or away from the reacting member.

Abstract: By applying balance between atmospheric pressure and gravity, Torricelli's vacuum is formed, and by utilizing the vacuum, power is generated. When an operating tube directs to nearly the right above, because of the weight of a liquid on the inside of the operating tube, Torricelli's vacuum is formed under a piston, and by this vacuum, the piston is lowered to rotate an operating crankshaft. Then, linking to the rotation of the operating crankshaft, the operating tube inclines, causing the piston to be pushedly returned to the original position by the liquid. In this state, the operating tube is returned to the above-described position. A plurality of operating tubes which are balanced in gravity by a balance weighing means repeat this operation in different phases, thus causing the operating crank to continuously rotate.

Abstract: This disclosure describes a pump that dispenses controlled amounts of flowable material by computer controlling both the displacement and angular position of the piston with servomechanism means. The system includes container means to hold a supply of flowable product material to be dispensed; cylindrical piston and piston housing means having a plurality of inlet porting means adapted to receive said flowable product material from the container means, and a plurality output porting means adapted to dispense said product from said container; piston rod means connected to the piston means so as to impart linear and rotary motion to said piston means. Rotary and linear drive means are connected to the piston rod means and adapted to alternately cause surface apertures to align with the inlet porting means while causing surface lands to restrict flow from the outlet porting means, then cyclically reversing said process.

Abstract: A turbo vacuum pump has a rotor and magnetic bearings. The magnetic bearings are held in a housing having a suction port and an exhaust port, and support the rotor rotatably. A peripheral flow pump stage and screw pump stage are formed in the rotor, so that the pressure at the exhaust port can be at or near atmospheric pressure level. Before starting the turbo vacuum pump, the magnetic bearings are operated to displace a rotor position and to scrape off the reaction products which have deposited inside the pump. In addition, before starting the turbo vacuum pump, a stator of the pump is heated up to decrease a binding force of the reaction products. Therefore, the pump can be restarted, even if the rotor has locked by the solidification of deposited reaction products formed during stopping of the pump.

Abstract: A fuel injection device 23 adapted to be attached to an engine and provided with a pump case 1, a fuel injection pump 2, a fuel injection cam shaft 3, a connecting portion 5, an input end portion 6 of the fuel injection cam shaft 3 and a temporary holding means 10 is employed and the following procedures are carried out. Both, revolution of the fuel injection cam shaft 3 and of a crankshaft 17 is stopped. The pump case 1 is connected to an engine timing gear case 8, and engagements for a timing gear train 43 are carried out. Play in the timing gear train 43 is removed during the turning of the pump case 1 and the pump case 1 is fixedly secured to the timing gear case 8. Thereafter, of the fuel injection cam shaft 3 and the crankshaft 17 are released and allowed rotate.

Abstract: An electronic air compressor control system and method including an actuator connected to an air compressor for regulating the loading and unloading of the air compressor based on predetermined conditions, a power supply electrically connected to the actuator for supplying a voltage thereto and a plurality of switches electrically coupled to the actuator and power supply for controlling the supply of voltage from the power supply to the actuator in order to control the operation of the air compressor based on a predetermined air compressor exhaust temperature threshold and minimum and maximum pressure thresholds. The unloading and loading of the air compressor is based on a predetermined air compressor exhaust temperature when the pressure within the wet tank is between the minimum pressure threshold and the maximum pressure threshold.

Abstract: An apparatus for controlling an electrohydraulic system of a work machine having an engine that drives a variable displacement pump is disclosed. The apparatus includes a pump displacement setting device that produces a pump command signal, a pressure sensor that detects the fluid pressure associated with the variable displacement pump and produces a pressure signal, and an engine speed sensor that detects the speed of the engine and produce an engine speed signal. A microprocessor computes the torque demand on the engine in response to the desired pump displacement, determines a torque limit associated with the engine in response to the engine speed, and responsively modifies the pump command signal to limit the engine torque.

Abstract: A monoblock gas compressor for use in compressing gas having a supply pressure greater than the atmospheric pressure is provided. The compressor includes a compressor head mounted to a cylinder block such that a plurality of valve receiving bores formed in the cylinder head are aligned with a bank of cylinders of the cylinder block. A compressor valve is disposed in the valve receiving bores and secured therein with a valve retainer. The valve retainer defines a gas inflow path to the compressor valve and a gas discharge path away from the compressor valve. The compressor head has a plurality of gas inlets extending from a side of the compressor head and intersecting a corresponding one of the gas inflow paths, thereby enabling the compressor head to safely receive supply gas at a pressure substantially greater than atmospheric pressure.

Abstract: Fuel pump for delivering high pressure fuel to a fuel injection system of an internal combustion engine is provided. The fuel pump has a body, a drive shaft rotatably mounted in the body, at least one cam on the drive shaft, a plurality of pumping plungers mounted in the body for movement in the radial direction relative to the axis of rotation of the drive shaft, a pumping chamber defined radially outwardly of each plunger, and a delivery valve associated with each pumping chamber. Each pumping plunger is mounted in a support member which provides sliding support for its associated plunger in the circumferential direction of the drive shaft over substantially the entire length of the plunger in all working positions thereof. Each plunger is coupled to at least one cam by a pin which is secured to the plunger and extends outwardly from the plunger through a slot which extends through the support member in the axial direction of the drive shaft.

Abstract: A linear compressor operating apparatus includes a rectifying and filtering unit for converting an alternating current into a direct current, an inverter for inverting the direct current outputted from the rectifying and filtering unit into a desired frequency alternating current for operating a linear compressor in accordance with the alternating current outputted from the inverter, a position sensor for detecting a position of a piston of the linear compressor and outputting a position signal in accordance with said detection, a current detector for detecting the current running through the linear compressor, and a controller for receiving a current signal outputted from the current detector and a position signal outputted from the position sensor and outputting a pulse width modulating signal to control the inverter.

Abstract: A fan assembly includes a housing into which a base is disposed, the base having a tubular portion extending therefrom from which a projection extends, a motor mounted to the tubular portion, a bearing mounted to the projection and a fan blade device having a central hole defined therein so that the bearing is securely engaged with a periphery defining the central hole.

Abstract: A winding circuit for use in a fan includes first and second integrated circuits that each include a transistor for powering first and second fan windings in the fan, and at least one of a thermal shutdown element that switches the winding circuit "off" if the integrated circuit reaches a predetermined temperature, and a current regulating circuit. The fan includes a rotor having a magnet, and a stator having a magnet sensor to alternatively transmit current to the first and second windings, which also are located in the stator. The integrated circuits may be autoprotected MOSFETs and the magnet sensor may be a Hall effect sensor.

Abstract: A controller for a peristaltic pump receives as an input pressure P.sub.i sensed at the inlet of the pump. The controller derives a nonlinear scale factor S.sub.Pi that varies as a step function with P.sub.i. The scale factor S.sub.Pi equals a first nonvariable value when P.sub.i lays in a first defined zone of inlet pressures, and equals a second nonvariable value, different than the first nonvariable value, when P.sub.i lays in a second defined zone of inlet pressures different than the first defined zone of inlet pressures. The controller generates a pump speed command based, at least in part, upon S.sub.Pi.