214results about "Lubrication pressure control" patented technology

The invention provides a hierarchical dynamic control method and system for an oil pump fault mode, and the method comprises the steps: monitoring an actual oil pressure signal and a plurality of working condition parameter signals of an engine in real time, and carrying out the calculation based on the plurality of working condition parameter signals to obtain a target oil pressure signal; the difference value between the actual engine oil pressure signal and the target engine oil pressure signal is calculated, and whether the difference value is larger than a preset abnormal threshold value or not is judged; if the abnormal value is larger than the preset abnormal threshold value, it is judged that the oil pressure of the engine is abnormal, and whether the oil pressure abnormity belongs to the emergency situation or not is further judged; if the condition does not belong to the emergency condition, triggering early warning of a corresponding level according to the value of the difference value; if the non-highest-level early warning is triggered, the oil pressure state is detected again after preset time, and if the oil pressure is abnormal and still not recovered, a specific fault mode is diagnosed; and according to the diagnosed fault mode, the corresponding preset control strategy is called to control the fully variable oil pump, and the misjudgment rate is reduced.

The invention discloses a control system and method for an electronic oil pump, and relates to the technical field of electronic oil pump control. The system comprises a database, a positioning module, a damping regulation and control module, a double-tube coordination module and an oscillation monitoring module, through the synergistic effect, cross unstable intervals are recognized and avoided, damping and flow path switching are dynamically adjusted, and real-time monitoring and graded early warning are conducted, so that when the electronic oil pump is in the low-flow working condition or the engine pre-lubrication boundary state, the flow path switching is dynamically adjusted; the problems of pressure oscillation, discontinuous oil film thickness, unsmooth hydraulic execution and the like caused by impedance matching imbalance between a pump characteristic curve and a pipeline can be effectively avoided; therefore, the technical problem that in the prior art, an electronic oil pump is prone to oscillation under the boundary working condition is thoroughly solved, and the stability and reliability of the system are greatly improved.

A control method and control apparatus for an electronic oil pump, applied to a vehicle. The control method comprises: after an engine of a vehicle is started, detecting whether a pressure measurement device has a fault; when the pressure measurement device does not have a fault, on the basis of real-time oil state parameters and real-time working condition parameters of the engine, determining a target requested rotation speed corresponding to an electronic oil pump, wherein the real-time oil state parameters at least comprise a real-time oil temperature and a real-time oil pressure, and the real-time working condition parameters at least comprise a real-time engine rotation speed and a real-time engine torque; and, on the basis of the target requested rotation speed, controlling the oil pump rotation speed of the electronic oil pump.

The invention provides an engine oil pressure control method and device, a vehicle and a storage medium, and relates to the technical field of engine lubricating systems. According to the method, on the basis of the engine oil viscosity of the engine at the current moment, the surface movement speed of each friction pair in the engine and the preset minimum oil film thickness of each friction pair, the theoretical minimum engine oil pressure of a main oil duct is calculated, the system oil supply pressure is reduced as much as possible on the premise that lubrication safety is guaranteed, the driving power of an engine oil pump is remarkably reduced, and the service life of the engine is prolonged. The fuel economy of the engine can be improved; then, the theoretical minimum engine oil pressure is adjusted in combination with future working condition information of the vehicle, the target engine oil pressure is obtained, the target engine oil pressure has perspectiveness, upcoming load changes can be responded in advance, and the pressure fluctuation problem under the transient working condition is effectively relieved; and finally, according to the deviation between the target engine oil pressure and the actual engine oil pressure of the main oil duct, the displacement of the engine oil pump is adjusted, and closed-loop accurate control over the engine oil pressure is achieved.

The objective is to provide a hydraulic control device for an internal combustion engine that can prevent abnormal noises and suppress deterioration of fuel efficiency and exhaust emissions. [Solution] A hydraulic control device for an internal combustion engine comprising: a first oil passage for supplying oil from an oil pump to a component; a second oil passage connected to the first oil passage for supplying the oil from the oil pump to a chain tensioner; a control valve provided in the first oil passage on the component side of the position where the second oil passage is connected; and a control unit for controlling the opening degree of the control valve.

To make oil surely interpose between a rotor housing and a rotor even in cold starting.SOLUTION: An engine system 12 comprises: a rotary engine 14 having a rotor housing 16, side housings 18, and a rotor 20 that is housed in a rotor accommodation chamber surrounded by the rotor housing and the side housings and forms three working chambers 24, in which the rotary engine is driven by a starter generator 10 at the time of starting to increase in rotation speed, and drives the starter generator during operation; a water temperature sensor 64 for detecting a cooling water temperature of the rotary engine; and a PCM 84 and an SGCM 86, which are configured to control rotation speed of the starter generator at the time of engine starting. The PCM 84 and the SGCM 86 control the starter generator such that when the cooling water temperature at the time of rotary engine starting is relatively low, the rate of increase in engine rotation speed becomes low as compared with that when the cooling water temperature is relatively high.SELECTED DRAWING: Figure 7

The application relates to a lubrication control system, method and vehicle of a fuel nozzle, comprising an oil tank, an oil supply module, a pneumatic module and a control unit; the oil tank is connected to the oil supply module through a first oil supply pipeline; the oil supply module comprises an oil supply pipe and a plurality of oil storage chambers, one end of the oil supply pipe is connected to the oil storage chamber, the other end of the oil supply pipe is connected to the oil tank, and the output end of the oil storage tank is connected to the fuel nozzle; the pneumatic module is connected to the input end of the plurality of oil storage chambers through an air pipeline; the oil tank and the pneumatic module are both connected to the control unit, and the control unit is used for controlling the oil tank to supply oil to the oil supply module and controlling the pneumatic module to supply pressure to the oil storage chamber. The scheme provided by the application can regularly and quantitatively lubricate the fuel nozzle, prolong the service life of the fuel nozzle and improve the efficiency of the engine.

The present application relates to a kind of engine pre-oiling system and method, including main oil tank and auxiliary oil tank, main oil tank is sequentially connected with main oil passage by pipeline by oil pump;Auxiliary oil tank is connected with the outlet of oil pump by corresponding pipeline with main oil passage respectively, and the pipeline connected with the outlet of oil pump is equipped with first pre-oiling pump, and the pipeline connected with main oil passage is equipped with second pre-oiling pump, and heating device is equipped on auxiliary oil tank.By increasing auxiliary oil tank and the pipeline and oil pump matched, the oil passage pressure fluctuation when engine is started first or normally is used to inject lubricating oil into auxiliary oil tank, so that when the viscosity of engine oil is increased in low temperature environment, the lubricating oil in auxiliary oil tank can be heated by heating device and sent into main oil passage, to avoid the problem of dry grinding, lubrication and damage caused by the influence of oil viscosity in bearing region.

A cooling system is provided, comprising at least one unit to be cooled by a coolant, at least one pump arranged in a pump housing, a radiator connected to the unit to be cooled and to the at least one pump via corresponding coolant lines, and at least one coolant sump connected to the unit to be cooled, in which coolant is provided. The at least one pump is configured to draw coolant from the coolant sump and convey it via the radiator towards the unit to be cooled, or to convey it directly to the unit to be cooled, and wherein at least one bypass valve per pump is arranged in the pump housing such that coolant can be conveyed directly from the pump to the unit to be cooled.

The invention discloses a control system for lubricating a diesel generating set, and relates to the technical field of diesel generating set lubrication control, the system comprises a control cabinet, the diesel generating set and M lubricating oil pre-supply pumps, the control cabinet is used for controlling the lubricating oil pre-supply pumps when it is determined that the diesel generating set is shut down, under the condition that it is judged that the lubricating oil pre-supply pump capable of providing the lubricating function exists, one lubricating oil pre-supply pump is controlled to be started; and under the condition that it is judged that the lubricating oil pre-supply pump capable of providing the lubricating function does not exist, the diesel generating set is controlled to be started, the diesel generating set is lubricated through the machine belt lubricating oil pump, and under the condition that it is determined that the lubricating oil pre-supply pump capable of providing the lubricating function exists, the diesel generating set is controlled to be shut down, and one lubricating oil pre-supply pump is started. The problems that in the prior art, when an unlubricated diesel generating set is started, lubrication fails, the cooling capacity is reduced, and the cleaning function is lost are solved, and it is guaranteed that lubrication of the diesel generating set is efficiently completed.

This application relates to methods and systems for lubricating devices. Methods and systems for a compressed natural gas fuel rail are provided. In one example, a system includes a device having a first volume for containing compressed natural gas and a second volume for containing a lubricant, the first volume and the second volume being disposed in a single housing and separated by a barrier. Lubricant flow from the second volume to the first volume can be regulated by regulating a pressure of the second volume such that a pressure differential between the second volume and the first volume is increased to increase lubricant flow or the pressure differential is decreased to decrease lubricant flow.

The present invention provides an engine control device that can further reduce engine noise and vibration (NV) (i.e., improve the quietness of the engine). [Solution] The ECU 50 estimates the oil film thickness for each cylinder based on the crank angular velocity, engine load, and oil temperature corresponding to the expansion stroke of each cylinder, and corrects the ignition timing of cylinders whose estimated oil film thickness is thinner than a predetermined value.

This application discloses a method, apparatus, device, and storage medium for measuring engine oil level. In the field of engine technology, the method for measuring engine oil level is disclosed. The method is applied to an engine oil level measuring unit, including an oil dipstick tube, an oil dipstick, an electronically controlled valve, a temperature sensor, and a temperature indicator light. The oil dipstick tube contains a first channel and a second channel forming a U-shaped tube structure. The electronically controlled valve is located in the first channel, the temperature sensor is located at the bottom of the first channel, and the temperature indicator light is located at the top of the dipstick tube. The method includes: when the engine is in a first stopped state, controlling the electronically controlled valve to open and close according to a preset method; when the opening and closing operation of the electronically controlled valve ends, adjusting the working state of the temperature indicator light according to the engine oil temperature; and when the temperature indicator light is illuminated, measuring the engine oil level according to the dipstick. This method ensures the accuracy and repeatability of the engine oil level measurement.

This invention relates to a lubricating oil composition comprising or resulting from the admixing of: a) 50 to 99 mass % of one or more base oils; b) 0.1 to 15 mass % of one or more functionalized olefin copolymer having an Mn of from 10,000 to 35,000 g / mol; c) 0.1 to 20 mass % of one or more detergents wherein the detergent comprises at least one calcium detergent having a TBN of more than 100 mg KOH / g; at least one calcium detergent having a TBN of 100 mg KOH / g or less; and at least one magnesium detergent, where the difference in the TBN's for the Ca detergents is at least 100 mg KOH / g; d) 0.01 to 40 mass % of one or more dispersants wherein the dispersants comprise at least one borated dispersant and at least one non borated dispersant; e) 0.01 to 20 of mass % sulfurized fatty acid ester; f) 0.01 to 5 mass % of one or more amine or phenol based antioxidants; and g) 0.001 to 15 mass % of molybdenum containing compound, where the lubricating oil composition has: 1) a sulfated ash content of 0.9 mass % or less; 2) a Mack T-11 final soot %@15 cSt of 6.7% or more; 3) a total base number of 5 to 30 mg KOH / g; 4) HTCBT of copper level increase of 20 ppm or less; 5) T-13 IR peak EOT of 40 abs / cm or less; and 6) Cam wear outlet of 45 μm or less.

A hybrid electric propulsion system for an aircraft is provided that includes a thermal engine, an electric motor, a gearbox, an electric power storage unit, a propulsion unit, and a controller. The thermal engine has a main oil pump configured to be driven by the thermal engine. The gearbox is in communication with the thermal and electric motors. The propulsion unit includes a propeller having propeller blades, and a pitch change mechanism. The controller is in communication with the thermal and electric motors, the propulsion unit, and a memory storing instructions. The instructions when executed cause the controller to control the electric motor to operate using electrical power from the electric power storage unit to cause the main oil pump to actuate and produce a flow of engine oil to the pitch change mechanism for a period of time sufficient to feather the propeller blades.

The invention discloses an intelligent engine pre-starting control system, relates to the technical field of engine electric control, and solves the technical problems that the existing manual starting electric pre-feeding oil pump control mode is not flexible, and the starting time cannot be controlled according to the engine oil pressure and temperature, so that the service life of a starting motor is influenced. The system comprises a CAN instrument, an ECU, an engine oil pressure and temperature sensor and a whole vehicle wire harness, the CAN instrument is electrically connected with the ECU through the whole vehicle wire harness, the engine oil pressure and temperature sensor is electrically connected with the ECU through the whole vehicle wire harness, and the CAN instrument collects the real-time engine oil pressure output by the engine oil pressure and temperature sensor through the whole vehicle wire harness and sends the real-time engine oil pressure to the ECU through the whole vehicle wire harness. The ECU collects the real-time engine oil temperature output by the engine oil pressure and temperature sensor through the whole vehicle wire harness. Accurate control over the electric oil pre-supply pump is achieved, and the control flexibility of the electric oil pre-supply pump is improved.

This invention discloses an apparatus and method for controlling a vehicle's oil pump, which can control the speed of the oil pump. The apparatus includes a controller configured to control the speed of the oil pump based on temperature information of the motor and oil, as well as speed and torque information of the motor. When the vehicle is in motion, the controller checks whether the temperature of the motor or oil is higher than or equal to a first set temperature. When the temperature of the motor or oil is higher than or equal to the first set temperature, the controller controls the speed of the oil pump to a maximum speed value. When the temperature of the motor or oil is lower than the first set temperature, the controller calculates a control speed value and controls the speed of the oil pump to the calculated control speed value.

An engine oil metering system suitable for a rotor engine of a low-altitude aircraft belongs to the technical field of engine oil discharge of the rotor engine of the low-altitude aircraft and is characterized by comprising an electronic engine oil pump, an engine oil metering valve is connected to an oil outlet of the engine oil pump, and an engine oil pressure sensor is connected to an oil outlet of the engine oil metering valve. The engine oil pressure sensor is connected with a pressure nozzle, a nozzle of the pressure nozzle is fixedly connected with an engine rotor cylinder, the engine oil output amount in the rotor engine cylinder can be accurately controlled, the engine oil burning phenomenon of an engine is relieved while the rotor lubricating requirement is met, and the oil inlet amount in the rotor engine cylinder under different working conditions is accurately controlled.

The present invention relates to an electric oil pump and, more specifically, to an electric oil pump and an electric device which can measure the temperature of oil by including a temperature sensor unit on a suction flow path connecting an oil suction port and a pump chamber provided in a housing, can implement stable support with respect to a shaft, use winding coils connected for each phase winding coil in a three-phase motor, and minimize a connection route between a controller and a final end of the winding coils to simplify the structure and contribute to cost reduction. The present invention provides an electric oil pump comprising: an oil suction port provided in a housing; a pump chamber provided in the housing; a suction flow path connecting the pump chamber and the suction port; a temperature sensor unit disposed on the suction port or the suction flow path to measure the temperature of oil before flowing into the pump chamber; and a control module including a double journal bearing, a motor connected to a shaft connected to the pump, and a substrate, wherein the motor comprises a rotor and a stator, the stator includes three-phase windings of U-phase, V-phase, and W-phase, the windings of each phase are provided in plurality, the windings of the same phase are connected in series to each other, and a final line of each winding connected in series is connected to the control module, one for each phase.

This invention discloses an electromagnetic control valve for a diesel engine lubrication system, relating to the field of electromagnetic valves. The invention features a simple structure. By adjusting the fit between the components of the electromagnetic control valve, an oil drain port is provided at the front end of the valve sleeve, and two annular grooves are provided on the circumference, forming a first oil outlet and a second oil outlet at the second annular groove. Simultaneously, the dimensions of the two oil outlets are adjusted so that the amount of lubricating oil discharged from the oil pump regulating chamber through the second oil outlet is greater than the amount of lubricating oil flowing into the oil pump regulating chamber from the oil inlet through the first oil outlet. Compared to existing electromagnetic hydraulic control valves, this invention offers a wider range of hydraulic oil quantity adjustment, higher precision, and more sensitive response. Even when the electromagnetic valve fails due to power loss, it can still automatically open under oil pressure to adjust the oil pump output.

This invention discloses a closed-loop control system for a solenoid valve of a variable displacement oil pump in an engine, relating to the field of pressure control technology. The system includes: matching a target oil pressure based on engine operating condition information; determining the equivalent viscosity of the oil through the real-time dynamic evolution characteristics of oil temperature and pressure in the hydraulic medium state, and generating oil pressure regulation control reference information; a duty cycle adjustment module, which dynamically adjusts the response sensitivity of the pressure regulation loop based on the oil pressure regulation control reference information and the equivalent viscosity of the oil to adapt to the changes in motion damping of the hydraulic medium under different temperature conditions, obtaining a target control duty cycle signal for the solenoid valve; and a chatter overlay module, which matches a corresponding chatter frequency and amplitude according to the equivalent viscosity of the oil, and loads the chatter frequency and amplitude onto the target control duty cycle signal of the solenoid valve to generate a solenoid valve drive control command; thereby improving engine lubrication consistency and fuel economy.

The application discloses a pressure regulating device and a diesel engine, and belongs to the technical field of pressure regulation. The pressure regulating device comprises a valve body, a plunger and an elastic assembly. The valve body is provided with a first accommodating cavity, an oil inlet hole and an oil outlet hole which are in communication with each other, and the plunger is arranged in the first accommodating cavity. The plunger can move along the axial direction of the valve body to make the oil inlet hole and the oil outlet hole communicate or disconnect. The elastic assembly is arranged in the first accommodating cavity and comprises a first spring and a second spring. The first spring is connected with the valve body and the plunger along the axial direction respectively, and the first spring can be stretched or compressed along the axial direction. The second spring is arranged around the outer circumferential side of the first spring and abuts against the valve body and the plunger along the axial direction respectively. The second spring can be compressed along the axial direction. The first spring inserted in the second spring is combined with the first spring capable of being stretched or compressed along the axial direction and the second spring capable of being compressed along the axial direction, so that the overall structure is compact, the pressure regulating range is increased, the pressure regulating device can quickly respond, and the working stability is improved.

The embodiment of the application discloses a low-temperature control method of a variable displacement engine oil pump system, a vehicle and electronic equipment. The low-temperature control method of the variable displacement engine oil pump system comprises the following steps: after the engine is started, if the ambient temperature detected by an ECU control module is less than a first preset temperature, a low-temperature control strategy is executed; the low-temperature control strategy comprises the following steps: if the ambient temperature is less than the first preset temperature and the oil temperature of the engine is less than or equal to a second preset temperature, the oil pressure of the variable displacement engine oil pump is controlled to work at a preset pressure until the oil temperature of the engine is greater than the second preset temperature; if the ambient temperature is less than the first preset temperature and the oil temperature of the engine is in a preset temperature interval, the oil pressure of the variable displacement engine oil pump is controlled to work at the preset pressure and a preset time. The application greatly improves the engine low-temperature oil pressure establishment time, accelerates the engine oil temperature rising speed, and reduces the wear of the piston ring and other moving parts.

The invention discloses an intelligent balance oil-saving control method and system for an engine lubricating system, and belongs to the technical field of self-adaptive control. The prior art depends on off-line calibration fixed hypothesis and only tracks preset oil pressure, so that oil temperature deviation or oil pressure mismatch after abrasion is caused, and lubricating safety and oil pump energy consumption cannot be dynamically balanced. The rotating speed, the load, the oil temperature and the oil pressure are obtained in real time, a comprehensive correction factor is introduced for online correction of a friction loss model, the minimum total energy consumption serves as the target, extreme value search is adopted for optimization, meanwhile, the oil film thickness and the minimum oil supply pressure are estimated in real time based on a classic fluid power lubrication formula, and dual physical constraints are formed; and the extreme value search does not break through the safety boundary. According to the invention, the total energy consumption is minimized on the premise of ensuring the lubrication safety, and the self-adaptive on-demand lubrication is realized.

This internal combustion engine control device is provided with: a correlation index estimation unit that estimates a piston temperature correlation index having a correlation with the temperature of a piston, on the basis of an internal combustion engine operating condition parameter and an oil jet parameter for jetting oil to a rear surface of the piston; a hydraulic pressure setting unit that sets the hydraulic pressure of an oil jet on the basis of the piston temperature correlation index and a vaporization parameter of fuel that attaches to the piston. If the piston temperature correlation index is less than a first prescribed value which is determined, as the vaporization parameter, on the basis of a temperature corresponding to a fuel vaporizable condition, then the hydraulic pressure setting unit sets the hydraulic pressure of the oil jet at a hydraulic pressure at which jetting of the oil jet can be stopped.

The invention discloses a filtering device, an engine and a vehicle, and belongs to the technical field of vehicle engineering. The oil storage container is provided with a first oil storage cavity and a second oil storage cavity; an oil pump; the oil suction mechanism is provided with an oil conveying port, a first oil suction port and a second oil suction port, the oil conveying port is connected with an oil inlet of the oil pump, the first oil suction port and the second oil suction port are connected with the first oil storage cavity and the second oil storage cavity respectively, the oil conveying port is communicated with the first oil suction port or the second oil suction port, and the first oil suction port and the second oil suction port are communicated with the first oil storage cavity and the second oil storage cavity respectively. The oil pump is arranged in the first oil storage cavity or the second oil storage cavity so as to suck oil from the first oil storage cavity or the second oil storage cavity; the filter is connected with an oil outlet of the oil pump; and the oil return mechanism is connected with the second oil storage cavity and the oil return port. According to the filtering device, the engine and the vehicle, the technical problems that the engine oil filtering performance of an engine is not ideal, and oil using parts are clamped and high in abrasion risk can be effectively solved.

A single rotor engine main oil pump cooling and lubrication control system and control method, rotor engine control technical field, including: oil supply main oil way, metering lubrication branch, main oil pump, oil pressure sensor, metering valve and oil pressure switch, the oil pressure sensor is fixedly installed at the outlet end of the main oil pump, the oil pressure switch is installed at the outlet end of the metering valve, the inlet end of the main oil pump is fixedly communicated with the oil supply main oil way, and the metering lubrication branch is fixedly communicated with the inlet end of the metering valve.The present application has the effects of hierarchical closed-loop control, full-dimension monitoring protection, calibration adaptation, double redundancy protection, full-process traceability, and precise balance safety and adaptation.

The invention relates to a lubrication system (100) for a turbomachine comprising a reduction gear (152). The lubrication system (100) comprises a main branch (120) and a bypass branch (140) arranged in parallel to the main branch (120). The main branch (120) comprises a heat exchanger (121, 122, 124). The hydraulic resistance of the bypass branch (140) is lower than the hydraulic resistance of the main branch (120). The reduction gear (152) is located downstream of the main branch (120) and the bypass branch (140). The lubrication system (100) comprises at least one bypass device (200) configured to supply lubricant to the bypass branch (140) when a pressure value of the lubricant is below a threshold value.

A lubrication system comprises a heat exchanger with an inlet and an outlet, a gear lubrication circuit that fluidically connects a gear between the inlet and outlet of the heat exchanger, a stator lubrication circuit that fluidically connects a stator between the inlet and outlet of the heat exchanger, and a rotor lubrication circuit that fluidically connects a rotor between the inlet and outlet of the heat exchanger. The rotor lubrication circuit includes a mechanical rotor circuit valve located upstream of an inlet to the rotor and downstream of the outlet of the heat exchanger. Furthermore, the mechanical rotor circuit valve is configured to move from a closed position to an open position when a pressure immediately upstream of the mechanical rotor circuit valve reaches its opening pressure.