摘要:
The invention relates to a lubricating pump which contains screw pistons of which one is in compression operation and the other is in suction operation in alternation. The invention further relates to a method for supplying lubricant, wherein a first screw piston is in a suction operation while a second screw piston is in a compression operation and vice versa, and wherein the two screw pistons are driven by means of a common gear train, which contains one piston gear for each screw piston.
摘要:
Proposed is a dosing module for injecting liquid urea-water solution into the exhaust tract of an internal combustion engine, which dosing module is composed of two pumps, specifically a delivery pump (5) and an aeration pump (15). This permits firstly the injection of urea-water solutions and secondly safe and reliable ventilation of the system when the internal combustion engine is to be shut down.
摘要:
A compressor assembly having an air ducting shroud that can direct a cooling air stream from a fan to components of the compressor assembly, such as a pump assembly. The pump assembly can have at least a pump, a motor and a fan. The compressor can be cooled by providing cooling air to a cylinder head of the pump without the cooling air experiencing choking or substantial cooling flow interference from a cooling of the motor.
摘要:
A pump assembly includes a pair of rotatable pumps located in a housing and engaged to a pump support disposed on a support surface on which the rotatable pumps are mounted. The pump support may include a pair of parallel side walls and a pair of bearing supports for a pair of pump shafts. Each pump shaft is driven by a separate pump gear, and a distance between an axis of rotation of a first pump shaft and an axis of rotation of a second pump shaft is less than a sum of: (a) a minor radius of the first pump gear, and (b) a minor radius of the second pump gear.
摘要:
The present invention relates to a bidirectional output mixed hydraulic power system, which includes a hydraulic fluid that stores and contains therein a fluid tank; at least one electrical hydraulic pump connected to the fluid tank to draw in, pressurize, and output the hydraulic fluid; at least one mechanical hydraulic pump connected to the fluid tank to draw in, pressurize, and output the hydraulic fluid; at least two sequence check valves each connected to the electrical hydraulic pump and the mechanical hydraulic pump, each of the sequence check valves being set normally open in a first direction and preventing fluid returning in a second direction; and a dual pressure valve that is connected to the fluid tank and each of the sequence check valves for switching output direction of the hydraulic fluid.
摘要:
A compressor assembly having a high velocity muffler system which produces a particle-free compressor pump feed while reducing noise output from the compressor assembly during compressing operations. The high velocity muffler system is maintenance-free and comprises an inertia filter. The compressor assembly uses a method for producing a compressor pump feed and reducing noise during compressing operations by processing a gas through the high velocity muffler system which has an inertia filter and a muffler chamber to produce a compressor pump feed which can be compressed by a pump assembly.
摘要:
A method of controlling a liquefied natural gas system is provided. The method includes providing a first pump in association with a tank. The method includes connecting a second pump downstream of the first pump through a supply line. The method further includes providing a valve assembly in a return line provided downstream of the second pump. The method includes connecting an adjustable restrictor in the return line, the adjustable restrictor positioned downstream of the valve assembly. The method further includes cooling the second pump by operating the valve assembly in an open configuration to fluidly connect the adjustable restrictor and the second pump. The method also includes providing a flow of the liquefied natural gas to the second pump for controlling an operating temperature of the second pump. The method includes selectively operating the adjustable restrictor to control a suction pressure associated with the second pump.
摘要:
An illustrative valve is disclosed that includes a valve body with a valve seat and a valve member adapted to sealingly engage the valve seat. The valve also includes an actuator operatively coupled to the valve member via a non-rigid connector, wherein the actuator is adapted for selectively moving the valve member relative to the valve seat.
摘要:
In a vehicle having an engine, crankshaft and pump assembly in an engine housing, the pump assembly includes a pair of rotatable pumps located in the engine housing and engaged to respective cradle bearing supports. A single pump shaft driven by the crankshaft has an axis of rotation parallel to that of the crankshaft, and engages and drives both rotatable pumps. The pump assembly also includes a first support plate on which one of the rotatable pumps is disposed and a second support plate on which the other of the rotatable pumps is disposed, and both cradle bearing supports are disposed between the first support plate and the second support plate.
摘要:
An air ducting shroud for a compressor assembly having a motor air duct having a blocking partition, a conduit in flow communication with the motor air duct and a motor cavity configured to accept a compressor assembly motor. The air ducting shroud can have a number of blocking partitions. The air ducting shroud can have a conduit to feed cooling air to the head area of a pump assembly. The air ducting shroud can direct multiple cooling air flows to cool the motor of the pump assembly.