389results about How to "Reduce lubrication" patented technology

In an ejector cycle having an ejector for decompressing refrigerant, a check valve is disposed in an oil return passage through which refrigerant including a lubrication oil is introduced from a refrigerant outlet side of an evaporator to a refrigerant suction side of a compressor while bypassing the ejector. When the lubrication oil amount staying in the evaporator reduces, the check valve is automatically closed, and a normal operation mode of the ejector cycle is automatically set. On the contrary, when a large amount of lubrication oil stays in the evaporator, the check valve is automatically opened, and an oil return mode is automatically set. Therefore, the lubrication oil staying in the evaporator can be controlled equal to or lower than a predetermined amount, thereby effectively returning the lubrication oil to the compressor.

A balloon catheter having a balloon with a reduced slippage lubricious coating, and a method of performing a medical procedure such as a balloon dilatation procedure in a patient's blood vessel. The second coating (i.e., the balloon coating) is lubricious to facilitate movement of the catheter in the patient's body lumen, yet has sufficiently low lubricity such that the slippage of the inflated balloon from a desired site within the blood vessel is reduced compared to a balloon coated with the first lubricious coating.

This invention relates to substantially anhydrous warming, non-toxic and nonirritating lubricating compositions containing polyhydric alcohols and an insulating agent as well as gel and jelly compositions related thereto. The invention also relates to methods of using such compositions for lubrication, administration of active ingredients and for preventing or treating dysmenorrhea.

This invention relates to substantially anhydrous warming, non-toxic and nonirritating lubricating compositions containing polyhydric alcohols, a gelling agent and alternatively a pH adjusting agent for treating fungal and bacterial infections. The invention also relates to methods of using such compositions for warming, lubrication, administration of active ingredients and for preventing or treating dysmenorrhea.

The invention provides a drilling fluid lubricant prepared from waste plant oil and a preparation method thereof. The lubricant is composed of the following raw materials in parts by weight: 70 to 80 parts of waste plant oil, 10 to 20 pats of lower alcohols, 1 to 5 parts of surfactant, and 1 to 5 parts of high temperature resistant processing agent. The preparation method comprises the following steps: step a, carrying out a pretreatment on raw materials: removing impurities from waste plant oil; step b, carrying out esterification conversion: adding lower alcohols and the waste plant oil preprocessed in step a into a reactor with/without a catalyst to carry out esterification reactions or ester exchange reactions, wherein the reaction temperature is 60 to 120 DEG C, and the reaction time is 3 to 8 hours; step c, refining and separating the reaction products: precipitating and separating the reaction products obtained in the step b, and then refining the reaction products to obtain a refined product; step d, carrying out performance improvement: adding the surfactant and the high temperature resistant processing agent so as to obtain a finished product.

There is disclosed a material for separating a liquid from a mixture of at least two liquids, for example, for separating water from fuel. In one embodiment, the material comprises a fibrous substrate and carbon nanotubes, both of which have at least one functional group attached thereto. There is also disclosed a method for separating one liquid from another liquid using the disclosed material. In one embodiment, the method comprises flowing a mixture of liquids through the disclosed material, and either coalescing or separating at least one liquid by use of the carbon nanotubes.

The invention discloses a solid lubricating composite material and a manufacturing method thereof. Raw materials for the solid lubricating composite material comprise carbon nano tube, boron oxide and polytetrafluoroethylene. The manufacturing method comprises the following steps: grinding the carbon nano tube in a ball mill to form sectional structures, adding ethanol and surface dispersant into the carbon nano substances of the sectional structures, and treating the mixture by ultrasonic wave to obtain carbon nano liquid; taking boron oxide powder, polytetrafluoroethylene powder and the carbon nano liquid in percentage by weight, and mixing the three substances and stirring the mixture at a high speed to disperse the carbon nano liquid into the boron oxide and polytetrafluoroethylene powder so as to obtain a mixture; and die-pressing and molding the mixture, and demoulding the mixture to obtain the finished product solid lubricating composite material. The solid lubricating composite material prepared from the combination of the carbon nano tube and the polytetrafluoroethylene with self-lubricating property greatly improves the technical indexes such as low friction coefficient, self-lubricating property, abrasion resistance and the like, can conduct heat and electricity and eliminate static electricity produced by friction, and can be continuously produced in batch with lower cost.

Methods and systems for providing control of a heat pump of a motor vehicle are presented. In one operating mode, speed of a heat pump compressor is controlled responsive to an outlet pressure of the heat pump compressor. In a second operating mode, speed of the heat pump compressor is controlled responsive to a pressure ratio between an inlet and an outlet of the heat pump compressor.

The invention relates to special wire drawing oil for an aluminum wire, which is characterized in that the special wire drawing oil for the aluminum wire comprises biodiesel, colza oil, an antioxidant, a polyester extreme pressure agent and a phosphor-bearing antiwear agent, wherein the compositions by mass portion of the special wire drawing oil for the aluminum wire are: 100 portions of the biodiesel, 20 to 50 portions of the colza oil, 1 to 5 portions of the antioxidant, 5 to 20 portions of the polyester extreme pressure agent and 1 to 5 portions of the phosphor-bearing antiwear agent. The invention relates to a method for manufacturing the special wire drawing oil for the aluminum wire, which comprises the following steps: a. weighing up the biodiesel, the colza oil, the antioxidant, the polyester extreme pressure agent and the phosphor-bearing antiwear agent for standby according to the weight proportion; b. adding the biodiesel into a container at normal temperature, and adding the colza oil into the container, so as to form a solution after uniform stirring; and c. adding the antioxidant, the polyester extreme pressure agent and the phosphor-bearing antiwear agent to the solution in the step b, and uniformly stirring the solution until no deposit exists. The special wire drawing oil for the aluminum wire has low kinematic viscosity, good fluidity, good lubricating effect and strong safety.

A bottle conveyor lubricant composition used for polyalkylene terephthalate containers, characterized by comprising (A) a specific chelating compound, and (B) water, and further optionally containing (C) a nonionic surfactant, (D) a water-soluble solvent, (E) a cationic surfactant, and/or (F) an anionic surfactant. Using the specific chelating compound as a main component makes it possible to obtain a bottle conveyor lubricant suitable for moving and conveying PET containers on a stainless steel conveyor. Furthermore, by adding a specific surfactant, it is possible to obtain a bottle conveyor lubricant that can be used alone to enable PET containers to be moved and conveyed not only on stainless steel conveyors but also on resin conveyors. Moreover, the composition has excellent detergency, lubricating ability, sterilizing ability, scale suppressing ability, and stress crack preventing ability, and has an excellent effect of suppressing occurrence of deposit upon being mixed with a beverage. A method of using the composition is also provided.

A method for a PFDI engine may comprise, during a first condition, comprising direct-injecting fuel to the PFDI engine, estimating a fuel vapor pressure, and setting a fuel lift pump pressure greater than the fuel vapor pressure by a threshold pressure difference, and during a second condition, comprising port-fuel-injecting fuel to the PFDI engine, setting a DI fuel pump command signal greater than a threshold DI fuel pump command signal without supplying fuel to a DI fuel rail.

The invention discloses a formula system for low-shrinkage-rate stainless steel powder injection molding feedstock and a formula system for a molding agent thereof. The formula system for the molding agent of the low-shrinkage-rate stainless steel powder injection molding feedstock comprises stearic acid, an antioxidant, paraffin, high-density polyethylene, polyethylene-acetate, high molecular polymer wax and polyformaldehyde, wherein mass percentage of polyformaldehyde is not greater than 90%. The invention further discloses a formula system for low-shrinkage-rate stainless steel powder injection molding feedstock comprises stainless steel powder and the formula system of the molding agent. The formula system for low-shrinkage-rate stainless steel powder injection molding feedstock and the formula system for the molding agent thereof disclosed by the invention realize relatively high powder loading amount and relatively high shrinkage rate, have relatively high melt index as well as excellent blank strength and molding property, and are especially suitable for manufacturing and molding large-specification thin-wall products.

Various methods and system are described for a fuel system which includes a fuel composition sensor and a fuel lift pump disposed upstream of the sensor. The system may be operated in each of three different modes of operation. In each of the modes, a fuel lift pump voltage is adjusted responsive to a fuel capacitance output by the sensor, while a variable such as sensor temperature or fuel pump pressure is maintained depending on the mode of operation.

A fluid control valve includes a cylindrical housing with at least one opening through a housing wall, a cylindrical main valve axially movably arranged inside the housing for controlling a fluid flow through the at least one opening and a main valve spring member acting on the main valve. The main valve includes a base wall defining a fluid control volume and fluid main volume in the cylindrical housing. The base wall includes an opening for fluidly connecting the fluid control volume with the fluid main volume. The fluid control valve further includes a pilot valve positioned at the base wall opening, which pilot valve is moveably arranged for controlling a fluid flow through the base wall opening, and an electro-mechanical actuator configured to act on the pilot valve for controlling the main valve via the pilot valve. A method for adjusting the axial position of a cylindrical main valve of a fluid control valve is also provided.

The invention relates to an ultra-low-sulfur diesel lubricating property improver and a preparation method thereof. The improver is a mixture of monoglyceride, fatty acid and low-molecular-weight alcohol. The improver has acid value being lower than 30.0mgKOH/g and a condensation point being lower than -1 DEG C. according to the preparation method, biodiesel co-product glycerin and low-molecular-weight alcohols serving as the raw materials have esterification reaction with the fatty acid in the presence of an ionic liquid catalyst to generate the mixture of monoglyceride, fatty acid and low-molecular-weight alcohols, namely the ultra-low-sulfur diesel lubricating property improver, wherein the addition of the improver relative to low-sulfur diesel is 50mu g/g, the temperature is 100-170 DEG C, the pressure is 0.1-0.2MPa and the time is 1-2 hours. The detailed preparation method refers to the specification. The low-sulfur diesel lubricating property improver has low acid value and high lubrication improvement property, can be directly used without use of antioxidants and cleaning agents; production cost is low, the production process is clean and the production flow is short.