Abstract:
A sleeping system is provided, including an air bladder and a diaphragm pump. The diaphragm pump communicates with the air bladder. The diaphragm pump includes a base, a first inlet, a first outlet, a first noise-eliminating foam, a pump body and a cover. The first inlet is formed on the base. The first outlet is formed on the base. The first noise-eliminating foam is disposed in the base. The cover is connected to the base and covers the pump body, wherein air flow passes through the first inlet into the base and travels through the pump body and the first noise-eliminating foam, and leaves the diaphragm pump through the first outlet to be infused into the air bladder.
Abstract:
Provided is an axial hydraulic pump including: a residual pressure regenerating circuit (30) which is a pipe line communicating with a top dead center side communication port (31) and a bottom dead center side communication port (32); cylinder ports (26-1 to 26-8) which are provided in the respective cylinder bores of the cylinder block (6) and are operated with the rotation of the cylinder block (6); and communication holes (41-1 to 41-8) which communicate with the top dead center side communication port (31) and the bottom dead center side communication port (32).
Abstract:
A pump having an electric motor (14) and an electronic monitoring circuit (30) arranged in a housing part (26) of the motor, for monitoring and recording operating parameters of the pump, one of the operating parameters being the current consumption of the pump, the monitoring circuit (30) having a digital current and voltage measuring circuit (34) which is integrated in a semiconductor component and has at least one Hall sensor (36) for measuring current.
Abstract:
A method is disclosed for controlling knocking in a piston compressor and for a piston compressor (1) that is designed to carry out the method. The method is characterized in that, if a knocking noise made by a piston of the piston compressor hitting a cylinder head is detected by means of a structure-borne noise sensor provided on the piston compressor, the piston stroke of the piston compressor is decreased or, if no knocking noise is detected over a predefinable period of time, the piston stroke is increased.
Abstract:
The present invention relates to a system and to a method of controlling a fluid pump, as well as to a linear compressor and a cooler configured to calibrate the respective functioning at the time of the first use or in cases of problems caused by electric or mechanical failures. According to the teachings of the present invention, the fluid pump is provided with a piston-position sensing assembly, the electronic controller monitoring the piston displacement within the respective cylinder by detecting an impact signal. The impact signal is transmitted by the sensing assembly upon occurrence of an impact of the piston with the stroke end, the electronic controller successively incrementing the piston displacement stroke upon a trigger signal as far as the occurrence of the impact to store a maximum value of piston displacement.
Abstract:
An electro hydraulically adjustable pump has an adjustment member which is adjustable by at least one adjustment piston, a control valve which acts upon the at least one adjusting piston, a servo amplifier which triggers the control valve and which is supplied with an actual value of a pump adjustment and an actual value of a control valve adjustment, and an element which produces an additional pulse-shape adjusting signal as a function of an angle of rotation of the pump so as to control the control valve through the servo amplifier by the additional pulse-shaped adjustment signal.
Abstract:
A system, apparatus, and method for improving performance of a pressurized system having a natural gas reciprocating compressor pump. The sound attenuation device has a pipe having an outlet connected to one or more tuned loops, where each loop includes a junction that divides a flow into two pipes. Another junction reconnects the two pipes to an outlet pipe, where the outlet pipe of the loops is coupled to the former junction of the loops. The loop has an inlet coupled to the outlet of a reciprocating compressor cylinder. Between the branches one of the branches is longer than another branch by an amount equal to a wavelength within a range of wavelengths of vibrations propagating in a fluid discharged from the reciprocating compressor pumping system.
Abstract:
Es wird ein Verfahren zur Überwachung einer Bremsanlage mit Antiblockier- und/oder Antriebsschlupfregelung vorgestellt. Sie ist zu diesem Zweck mit einem elektronischen Regler (75) ausgerüstet. Zur Überwachung wird mittels eines Sensors (89) ein Volumen- und/oder Druckpulsationsbild aufgenommen und in Form von elektrischen Signalen an den elektronischen Regler (75) weitergeleitet. Im elektronischen Regler (75) ist ein Volumen- und/oder Druckpulsationsbild elektronisch gespeichert, das ein ordungsgemäßes Funktionieren der Bremsanlage repräsentiert. Die aktuellen durch den Sensor (89) aufgenommenen Volumen- und/oder Druckpulsationsbilder werden mit dem im Regler (75) gespeicherten Standardbild verglichen. Bei Abweichung eines oder mehrerer aktueller Bilder von dem Standardbild wird ein Störsignal durch den Regler (75) erzeugt. Das Verfahren liefert eine umfassende, sichere, kostengünstige Überwachung, insbesondere der Pumpenförderung.
Abstract:
Provided is an axial hydraulic pump including: a residual pressure regenerating circuit (30) which is a pipe line communicating with a top dead center side communication port (31) and a bottom dead center side communication port (32); cylinder ports (26-1 to 26-8) which are provided in the respective cylinder bores of the cylinder block (6) and are operated with the rotation of the cylinder block (6); and communication holes (41-1 to 41-8) which communicate with the top dead center side communication port (31) and the bottom dead center side communication port (32).
Abstract:
PROBLEM TO BE SOLVED: To provide a structure of a compressor capable of effectively reducing vibration under an attachment condition with a simple modification in a case that the compressor is attached to a vehicle side attachment part using a through bolt. SOLUTION: In the compressor attached to a vehicle side attachment part using the through bolt, the area of a first attachment surface to the vehicle side attachment part of the compressor is set larger than the area of a second attachment surface forming a seat surface at a head part side of the through bolt to give the areas of both attachment surfaces a magnitude relation. Consequently, vibration under the attachment condition is suppressed. COPYRIGHT: (C)2009,JPO&INPIT