397results about "Lubrication pressure control" patented technology

The invention relates to the technical field of engine oil filters, in particular to a multistage filtering engine oil filter which comprises a shell, a filter paper frame is coaxially arranged in the shell, the surface of the filter paper frame is coaxially sleeved with a rough filtering inner sleeve, and the surface of the rough filtering inner sleeve is movably sleeved with a rough filtering outer sleeve capable of moving up and down. First filter holes for rough filtration are uniformly distributed in the surfaces of the rough filtration inner sleeve and the rough filtration outer sleeve, the rough filtration outer sleeve moves up and down to enable the first filter holes in the rough filtration outer sleeve and the first filter holes in the rough filtration inner sleeve to be in a staggered closed state, a lower opening is formed in the lower end of the shell, and a collecting cover is coaxially mounted at the lower end of the shell; the invention aims to solve the problem that after the bypass valve of the engine oil filter is opened, impurities attached to filter paper are easily separated from the filter paper and flow to the positions of all oil-consuming parts of an engine through the bypass valve along with engine oil.

The invention relates to a supply assembly (1) for a gaseous-fuel engine (70). In order to provide effective means for precise lubrication of a fuel injector for a gaseous-fuel engine, the invention provides that the supply assembly (1) comprises: - a fuel-supply system (10) comprising a fuel rail (12) for conveying a gaseous fuel and a plurality of injector units (13), each injector unit (13) comprising a fuel injector (20) that is at least indirectly connected to the fuel rail (12) and is adapted to inject fuel into the engine (70), and - a lubricant-supply system (30) comprising at least one lubricant doser (31) with an outlet port (38), the lubricant doser (31) being adapted to controllably release a liquid lubricant (L) through the outlet port (38) into an injector unit (13), and being mounted to the injector unit (13).

The invention discloses a carbon dioxide energy storage system and a lubricating oil supply device and a control method thereof. The lubricating oil supply device comprises a first oil supply unit and a second oil supply unit which are connected between a lubricating oil tank and an energy storage assembly and between the lubricating oil tank and an energy release assembly respectively, and the first oil supply unit is configured to be capable of providing lubricating oil of a first oil quantity for the energy storage assembly and the energy release assembly; the second oil supply unit is configured to provide a second oil quantity of lubricating oil for the energy storage assembly and the energy release assembly; wherein the second oil supply unit is connected to a liquid storage unit in the carbon dioxide energy storage system, and high-pressure carbon dioxide gas in the liquid storage unit serves as a power source to drive the second oil supply unit to supply oil. According to the scheme, the driving control structure and the driving control process of the second oil supply unit for providing the accident lubricating oil can be simpler, the response speed is high, and the reliability of accident lubricating oil supply is effectively improved.

A refrigerant circulation system configured to circulate oil-containing CO2 refrigerant includes a compressor, a motor, an oil tank, first to third passages, a flow regulating valve provided to the first and / or second passages, a motor rotational speed sensor, and a controller which controls the flow regulating valve(s). The refrigerant supplied from the compressor flows through the first passage, the oil supplied from the oil tank flows through the second passage. The motor includes a rotation shaft coupled to a rotor, and slide bearings which are lubricated using liquefied refrigerant compressed by the compressor and support the rotation shaft. The third passage communicates the first passage with the second passage and supplies to the slide bearings the refrigerant mixed with the oil. The controller controls the flow regulating valve according to the detected rotational speed to change a proportion of the oil in the refrigerant supplied to the slide bearings.

A multi-adjustable valve for a flow of fluid within a lubrication system is provided, having a longitudinal axis. The valve includes a biasing member, a housing, first and second adjustable pistons, and a spool. The housing has an interior cavity and inlet and outlet fluid ports. The first adjustable piston is disposed in the housing interior cavity and is positionally adjustable within the housing interior cavity and is configured to produce a pressure adjusting effect on the flow of fluid. The biasing member is axially disposed between the second adjustable piston and the spool. The second adjustable piston is disposed within the housing interior cavity and is attached to the first adjustable piston and is positionally adjustable relative to the first adjustable piston, wherein the second adjustable piston, the biasing member, and the spool are configured to produce a pressure regulating effect on the flow of fluid.

To suppress cloudiness of engine oil.SOLUTION: In an engine having an oil pump for delivering engine oil, an engine control device executes determination processing (S100) for determining whether or not the engine is in low output operation, and temperature raising processing (S120) for decreasing an oil delivery amount Vp of the oil pump when an oil temperature THO is lower than a threshold X (S110: YES) as compared with when the oil temperature THO is equal to or higher than the threshold X. The temperature raising processing in S120 is executed on the condition that it is determined in the determination processing that the engine is in low output operation (S100: YES).SELECTED DRAWING: Figure 2

The invention provides an engine oil pressure control method and device and a vehicle, and relates to the technical field of engines. The engine oil pressure control method comprises the steps that the upper limit engine oil temperature and the lower limit engine oil temperature corresponding to the obtained current engine oil temperature of an engine are determined in multiple continuous temperature intervals; performing interpolation calculation according to a first engine oil pressure corresponding to the current parameter of the engine at the upper limit engine oil temperature and a second engine oil pressure corresponding to the current parameter of the engine at the lower limit engine oil temperature, and determining an expected engine oil pressure corresponding to the current parameter of the engine at the current engine oil temperature; and according to the expected engine oil pressure, the engine oil pump control duty ratio is determined through a control algorithm, and the engine oil pump is controlled according to the engine oil pump control duty ratio. The duty ratio is controlled through the oil pump, and the oil pump can be dynamically controlled according to the operation state of the engine, so that the oil pump outputs the oil pressure meeting the requirement of the operation state of the engine, and the lubricating effect on the engine is improved.

An internal combustion engine control device includes a correlation index estimation unit configured to estimate a piston temperature correlation index correlated with a temperature of a piston based on an internal combustion engine operating condition parameter and an oil jet parameter for injecting oil to a back surface of the piston; and a hydraulic pressure setting unit configured to set a hydraulic pressure of an oil jet based on the piston temperature correlation index and an evaporation parameter of fuel attached to the piston, wherein when the piston temperature correlation index is less than a first predetermined value determined based on a temperature corresponding to a fuel evaporable condition as the evaporation parameter, the hydraulic pressure setting unit sets the hydraulic pressure of the oil jet to a hydraulic pressure at which oil jet injection can be stopped.

The double-layer oil pan lubricating system of the integrated air conditioner comprises an oil pan, an oil duct and a cooling system, the oil pan comprises an outer shell and an inner shell arranged in the outer shell, the inner shell is used for containing engine oil, the outer shell and the cooling system circulate for allowing cooling liquid to flow, and the cooling liquid in the outer shell is used for cooling the engine oil in the inner shell; engine oil in the inner shell flows to the oil duct, and the cooling system is used for cooling the cooling liquid. Due to the fact that a traditional engine oil cooler is omitted, the overall resistance of a lubricating system is reduced, the rotation displacement of the electronic engine oil pump can be further reduced, the overall size of the electronic engine oil pump is reduced, arrangement and installation are convenient, and the total shaft power of the electronic engine oil pump is also reduced.

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.

Hybrid vehicle, comprising: an engine with a crankshaft, an electric machine connected to the crankshaft (30), a pump (14) driven by the rotation of the crankshaft (30) and connected to the engine via a fluid circuit, and a controller (12) configured to control the electric machine in response to a wheel torque request that exceeds an available regenerative braking torque to drive the crankshaft (30) with the engine off to supply lubricant to the engine.

The invention provides a control method, a controller and a system of an engine oil heat management system, and relates to the technical field of engines. The method comprises the steps that when the engine oil temperature of the oil pan is lower than a first temperature threshold value, the heating device is controlled to be started, and engine oil of the oil pan is heated; and on the basis of the engine oil temperature and the operation working condition of the engine, the working state of a bypass device and the flow proportion of engine oil distributed to the cooling component and the lubricating component by the engine oil flow distribution device are controlled. According to the method, when the engine is in a low-load working condition and the engine oil temperature is relatively low, excessive heat dissipation of engine oil entering the engine oil cooler can be stopped, meanwhile, the flow of the engine oil entering the cooling component and the lubricating component can be adjusted, and heat loss caused when the cooling component is still cooled at low temperature or low power consumption is avoided; the cold start performance of an engine is improved, the warm-up time is shortened, and emission and oil consumption are reduced at the same time.

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 invention discloses a high-horsepower diesel engine lubrication and cooling control method, and relates to an engine lubrication technology, when an ECU receives a high-horsepower diesel engine starting instruction, firstly, an oil pump is controlled to be started to provide lubricating oil for a part kinematic pair, meanwhile, whether the oil pressure reaches a preset pressure threshold value or not is detected, and if yes, the engine is started; if yes, the ECU automatically activates a high-horsepower diesel engine starting instruction to start the high-horsepower diesel engine; and when the high-horsepower diesel engine flames out and stops, whether an oil pump needs to be activated for post-lubrication or not is judged according to the running duration before the high-horsepower diesel engine flames out and the running rotating speed during flameout, and if yes, the oil pump is controlled to be started, and the oil pump runs for the set post-lubrication duration. According to the high-horsepower diesel engine, parts inside the high-horsepower diesel engine are lubricated before the high-horsepower diesel engine is started and when the high-horsepower diesel engine is stopped, the lubricating performance of the parts after the high-horsepower diesel engine is stopped is ensured, frictional wear during the high-horsepower diesel engine is stopped is reduced, and the effect of prolonging the service life of the high-horsepower diesel engine is achieved.

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.

This method of calculat ing a di lut ion rat io of a fuel in an oi l of a spark-ignit ion internal combust ion engine (2) capable of dr iving at least one wheel of the motor vehic le, said engine (2) being associated with at least one electr ic machine, comprises the steps of: -calculat ion of a variat ion (ΔM) in a mass of fuel di luted in an oi l bath (14) of the engine (2) by a t ime integral of the dif ference between a f irst quantity of fuel (Q_in) which is added to the oil bath and a second quant ity of fuel (Q_out) which is removed from it by evaporat ion, -updat ing a stored value of the diluted fuel mass (M_fuel_oi l) according to the var iat ion (ΔM) calculated, -calculat ion of the dilut ion rat io (Td) as a function of the rat io between the updated mass of diluted fuel (M_fuel_oi l) and a mass of oil (M_oi l) in the oi l bath

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 linear reciprocating piston engine comprising: A cylinder; a piston located within the cylinder, the piston separating upper and lower combustion chambers of the cylinder; a separation plate disposed across a lower end of the cylinder to seal the lower combustion chamber; and a joint disposed in the separation plate, the joint comprising a bore through which a connecting rod extends to connect the piston to a crankshaft. Movement of the piston along a longitudinal axis of the cylinder causes the connecting rod to rotate the crankshaft, said rotation of the crankshaft causing both transverse and angular movement of the connecting rod relative to the longitudinal axis of the cylinder. The angular movement of the connecting rod causes a corresponding angular movement of the joint. The joint comprises a curved outer surface configured to ensure contact with an outer seal disposed between the separation plate and the joint during said angular movement of the joint. The joint further comprises an inner seal disposed between the bore and the connecting rod; wherein the outer and inner seals are selected from any one of: a split ring compression seal; a split ring expansion seal; and a split ring labyrinth seal.

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 an engine starting method, a vehicle and a computer storage medium, the engine starting method is applied to the vehicle, the vehicle comprises a lubricating system and an engine, the lubricating system comprises an engine oil pump, a first valve body and an oil pan used for storing engine oil, the oil pan and the engine both communicate with the engine oil pump, and a circulating oil way is formed; the first valve body is arranged on the engine oil pump and is configured to be capable of controlling the engine oil pump to maintain or stop conveying engine oil to the engine, and the engine starting method comprises the steps that whether the engine is in a limit cold starting state or not is judged; when the engine is in the limit cold start state, the first valve body is controlled to stop the engine oil pump from conveying engine oil to the engine; when the engine is not in the limit cold start state, the first valve body is controlled to enable the engine oil pump to maintain conveying engine oil to the engine. According to the engine starting method, the rotation resistance of the engine crankshaft can be reduced, and therefore the low-temperature starting capacity of the engine can be improved.

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.

The invention discloses a novel control system and method for preventing oil pumping of a supercharger, and the system comprises a supercharger body which comprises an oil inlet; a sensing unit, wherein the sensing unit is connected to the supercharger body; the analysis and control unit is electrically connected with the sensing unit; one end of the engine oil pipeline unit is communicated with the oil inlet; the opening degree adjusting unit is annularly arranged on the pipe wall of the engine oil pipeline unit, and the opening degree adjusting unit is electrically connected with the analysis and control unit; the opening degree adjusting unit can change the size of the inner diameter of the engine oil pipeline and adjust the opening degree of the engine oil pipeline unit. The oil inlet opening can be intelligently controlled, and engine oil is prevented from penetrating through a cabin due to the influence of air pressure to cause engine faults.

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 invention provides an oil level monitoring system. A method of monitoring a fluid level in a power unit relies on a neural network model. The model is used to predict lateral acceleration during an air intake event. These predictions are compared with measurements of lateral acceleration. When the measured and predicted values are not well correlated, the controller takes a corrective action.

A method for lubricating a large combustion engine, and such large combustion engine, the combustion engine having a lubrication system comprising - a lubricant supply (25), - a plurality of lubricant injectors (4), - a lubricant feed or supply conduit (9, 12) supplying lubricant to the lubricant injectors (4), - a controller (11). Each lubricant injector (4) comprises - an inlet port (4A, 112) flow-connected to the lubricant feed conduit (9), - a nozzle (5) with a nozzle aperture (5'). The method comprises the steps of - measuring the rotation of piston rings (216) of a piston (215) of the engine, - sending a signal for the rotation to the controller (11), - establishing data in the controller (11) for the rotation and for rotational speed of the piston rings (216), - establishing a number of desired values for lubricant amount, - comparing in the controller (11) the calculated actual amount to the desired value, - applying the data to determine need for cleaning by activating a cleaning sequence.

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.