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187results about "Engine temperature" patented technology

Apparatus and method for lubricant condition control and monitoring

A volumetric lubricant dispensing apparatus for delivering a precise volume of lubricant, such as oil, to a rotating machine element. The delivery mechanism includes a piston and cylinder assembly. A plurality of sensors are utilized to record operating conditions of the machine, element, environment, and lubricant. The apparatus is controlled either manually or with the aid of a controller unit such as a microprocessor. The output from each sensor is inputted into the microprocessor wherein an algorithm computes an responsive output. The responsive output is sent to the piston and cylinder assembly, which maintains an optimum lubricant condition within the reservoir wherein a rotating machine element located. Alternatively, for the purpose of qualitative control, the present invention may be described as a system intended for controlling lubricants, both mineral (natural) and synthetic based by measuring the condition characteristics of the lubricant. Some condition characteristics may include water or moisture content (the content could be any liquid, e.g., solvents like ketones are known to change condition characteristics like viscosity) and viscosity. Viscosity is related to temperature, therefore, temperature correlation to viscosity is helpful to provide relative indications for condition characteristics like lubricant flow.
Owner:TRICO CORP

Gearbox lubricating system and lubricating oil flow control method of gearbox lubricating system

The invention discloses a gearbox lubricating system. The system comprises an annular loop which is sequentially connected with a lubricating oil tank, an oil pump, a radiator and an electric controlreversing valve, wherein a through passage is further arranged between the oil pump and the control valve, and the through passage is arranged in parallel with the radiator; the system further comprises a PLC main controller, a first temperature sensor, a second temperature sensor, a first temperature sensor and a second temperature sensor, wherein the first temperature sensor, the second temperature sensor, the first temperature sensor and the second temperature sensor are connected with the PLC main controller; the electric control reversing valve is connected with the PLC main controller, the control of an open precision of the electric control reversing valve is realized through the PLC main controller according to the monitoring data of the first temperature sensor, the second temperature sensor, the first temperature sensor and the second temperature sensor. The invention further discloses a lubricating oil flow control method of the gearbox lubricating system. According to the system and method, the PLC main controller is additionally arranged, the electric control reversing valve, the temperature sensors and pressure sensors are connected with the PLC main controller, wherein the service life and the precision control of the electric control reversing valve are relatively high, so that the service life and the intelligent control degree of the gear box lubricating system can be greatly improved.
Owner:GUODIAN UNITED POWER TECH

Pressure compensation type hydraulic pump, rotating speed control system, rotating speed control method and engineering machinery

The invention relates to engineering machinery, and specifically discloses a pressure compensation control type hydraulic pump. The hydraulic pump comprises an electric proportional pressure compensator, a hydraulic pump, a hydraulic control reversing valve and a servo piston, the electric proportional pressure compensator can be electrically connected with a controller, a first hydraulic controlport of the hydraulic control reversing valve is connected with an internal oil drainage oil way through the electric proportional pressure compensator, the first hydraulic control port is connected to an internal output oil way through a hydraulic control oil-inlet oil way provided with a first throttling valve, a second hydraulic control port of the hydraulic control reversing valve is connectedwith the internal output oil way, and the pressure difference between the opening pressure of the electric proportional pressure compensator and the pressure of an oil outlet of the hydraulic pump can drive the hydraulic control reversing valve to reverse. In this way, a rodless cavity of the servo piston selectively communicates with the internal output oil way or the internal oil drainage oil way. In addition, the invention further discloses a rotating speed control method, a rotating speed control system and engineering machinery. According to the hydraulic pump, the output flow of the hydraulic pump can be stabilized at a required value.
Owner:ZOOMLION HEAVY IND CO LTD +1

Bearing diagnostic device for machine tool

The invention provides a bearing diagnostic device for a machine tool. The device is capable of detecting abnormality of a bearing in a precise and low-cost manner at an early time prior to possible damage to a machine tool. The bearing diagnostic device includes a rotation speed detector and a calculating apparatus which detect the rotation speed of a spindle at a certain specific rotation speed; a temperature sensor and a calculating apparatus which detect the temperature of the spindle; a friction torque calculating part which calculates a friction torque of the bearing; a rolling speed calculating part which calculates the rolling sped of the bearing; a bearing pre-pressing estaimation part which estimates the pre-pressing of the bearing; a lubricant viscosity estimation part which estimate the lubricant viscosity of the bearing; a bearing characteristics calculating part which, based on the friction torque, the rolling speed, the pre-pressing, and the lubricant viscosity, calculates bearing characteristics; a storage apparatus which stores a reference bearing characteristics; and a determination apparatus which compares the bearing characteristics calculated by the bearing characteristics calculating part and the reference bearing characteristics stored in the storage apparatus, and determines the presence of abnormality.
Owner:OKUMA CORP

Mining explosion-proof type thin oil lubrication station

The invention provides a mining explosion-proof type thin oil lubrication station. The station comprises an oil tank, an oil outlet pipeline, an oil return pipeline, an oil pump, a one-way valve, a safety valve, a double-barrel filter, a cooler and an electric control box, wherein the oil return position of the oil tank is provided with a magnetic filtering device, the oil outlet pipeline comprises a first pipeline, a second pipeline and a third pipeline, wherein one end of the first pipeline and one end of the second pipeline communicate with the oil tank, the other end of the first pipelineand the other end of the second pipeline communicate with the input end of the double-barrel filter, one end of the third pipeline communicates with the output end of the double-barrel filter, the other end of the third pipeline is branched into a fourth pipeline with a first oil outlet and a fifth pipeline with a second oil outlet, one end of the oil return pipeline communicates with the magneticfiltering device, the other end of the oil return pipeline is branched into a sixth pipeline with a first oil return port and a seventh pipeline with a second oil return port, the cooler is an air cooler, and a shell of the electric control box is a metal closed explosion-proof type panel.
Owner:南通信仁润滑液压设备有限公司
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