The disclosure relates to an electronic pump that can be used in a motor vehicle, particularly for generating hydraulic fluid flow for steering and braking, or to perform auxiliary functions such as dump bodies for garbage trucks or landscape trucks. Methods of operating the system and manufacturing the system are also provided.

A reciprocating compressor includes a piston slidably mounted within a compression chamber and defining a suction port for receiving a flow of gas. A flex mount is mechanically coupled to the piston and has an inner surface that defines a suction cavity. A suction muffler is positioned at least partially within the suction cavity and includes an inlet tube extending along the axial direction within the suction cavity and defining an inlet passageway configured to receive the flow of gas and a plurality of chamber plates that extend along the radial direction from an outer surface of the inlet tube, the plurality of chamber plates and the flex mount defining a plurality of resonance chambers to reduce compressor noise.

The discharge valve arrangement (17) includes a valve plate (18) including a discharge passage (22) and a valve seat (23) surrounding the discharge passage (22); a valve housing (24) being secured to the valve plate (18) and including a bottom portion (25) facing away from the valve plate (18), a sidewall (26) extending from the bottom portion (25) and towards the valve plate (18), and a discharge opening (28) formed in the sidewall (26); a valve member (31) displaceable between a closed position in which the valve member (31) closes the discharge passage (22) and an open position in which the valve member (31) opens the discharge passage (22). The valve housing (24) includes a gas damping chamber defined by the bottom portion (25) and the sidewall (26) and being configured to accommodate the valve member (31) in the open position; and an exhaust opening (37) formed in the bottom portion (25) and emerging in the gas damping chamber.

Disclosed is an air compressing apparatus with a dry-air internal-emission trap unit, and more specifically, to an air compressing apparatus with a dry-air internal-emission trap unit which solves various problems arising due to venting and improves an on-site environment where compressed air is used by guiding the venting to an inside of a system for compressing air rather than guiding the venting in the system for compressing air to the outside (atmosphere), and which maximizes energy efficiency and obtains a virtuous circle of energy by enabling compressed air that is discarded to be reused.

A compressor includes: a case, a compression unit that is provided inside the case and that includes a cylinder and a piston configured to reciprocate inside the cylinder to compress refrigerant, a driving unit that includes a stator disposed inside the case and a plurality of permanent magnets configured to reciprocate with respect to the stator and that is configured to provide a driving force to the compression unit, and a resonator that is configured to reduce noises generated while the compression unit is operated, that is disposed between the compression unit and an inner surface of the case facing the compression unit in an axial direction, and that is spaced apart from the compression unit.

A piston pressure device includes a gas concentration-regulating piston pressure device and a high temperature autoclave. In the gas concentration-regulating piston pressure device, the proportion and concentration of corrosive gases can be accurately adjusted, intermediate gases can be stored and filled into the high temperature autoclave according to experimental needs, and an actual corrosion process in oilfield is accurately simulated. Meanwhile, the corrosive gases can be supplemented in real time during the experiment, and dynamic gas distribution in a high-temperature high-pressure corrosion experiment process is realized. The present invention has the advantages as follows: the piston pressure device is resistant to high temperature and high pressure, corrosion-resistant, simple in structure and convenient to operate; the concentration and proportion of the corrosive gases are accurately controlled to be invariable in the high-temperature high-corrosion experiment process; and reliability of high-temperature high-pressure corrosive experimental results is increased.

A compressor control method of controlling the vibration amplitude of a compressor equipped with a motor by using the motor is provided. The compressor is driven by the motor, and this method includes controlling, in a specific operating area, the vibration amplitude of the compressor such that the vibration amplitude is substantially constant regardless of changes in the load imposed on the motor and in the number of revolutions of the motor per unit time.

Aspects described herein relate generally to rotary compressors that incorporate a flywheel within to significantly reduce the compressor vibration and drive torque ripples as well as to achieve a higher overall electro-mechanical efficiency and potentially lower combined costs of BLDC rotary compressors and their drive electronics.

An air compressor includes a compressor assembly having an electric motor and a pump driven by the motor, a battery pack electrically connected to the motor for providing electrical power thereto, a storage tank that receives compressed air from the pump, and a case enclosing at least the compressor assembly and the storage tank. The case attenuates noise emitted by the compressor assembly.

The present invention relates to a system and method for operational acoustic optimization of a variable speed compressor (2) comprising a synchronous motor (6), a frequency inverter (3) and a control block (5), such optimization being carried out by modifying the switching frequency of the supply signal (9) of the motor (6) contained in the compressor (2), via a control block (5), only during the aligmnent phase of the motor (6), thus, not impairing the performance of the compressor (2), the thermal management of the inverter (3) and the acoustic performance of the system.