117results about "Lubrication pressure control" patented technology

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.

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 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 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.

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.

A control device for an internal combustion engine, comprising: a piston injector for injecting lubricating oil onto the back of a piston; and an oil pump for varying the amount of lubricating oil dispensed per revolution, i.e., the unit dispensed quantity. The control device includes a processing circuit. When the oil temperature is below a predetermined temperature, the processing circuit closes an electrically operated valve located in the lubricating oil supply path to the piston injector, thereby stopping the injection of lubricating oil from the piston injector. During the period when the oil temperature is below the predetermined temperature and the injection of lubricating oil from the piston injector is stopped, the processing circuit maintains the unit dispensed quantity of lubricating oil from the oil pump at or above a predetermined amount.

The utility model discloses a multi-oil-way integrated engine oil control valve base which comprises a base body for a multi-oil-way integrated engine oil control valve, a sealing assembly and a movable assembly. The base body comprises a base body, a mounting groove and a mounting base; the seat body is connected with the multi-oil-way integrated engine oil control valve through bolts and screws; a mounting groove is formed in one side of the seat body; the mounting seat is fixedly arranged on the other side of the seat body; the sealing assembly is arranged on the mounting seat; the sealing assembly comprises a sealing ring and a deformation groove; the sealing ring is connected with the mounting seat through a movable assembly; a deformation groove is formed in the outer side of the sealing ring; the longitudinal section of the sealing ring is of an elliptic structure; the deformation groove comprises a deformation part and a capacity increasing part; the longitudinal section of the deformation part is of an isosceles trapezoid structure, and an opening of the deformation part faces inwards; the multi-oil-way integrated engine oil control valve base is simple and reasonable in structure and ingenious in design, not only can the sealing performance of the base body be improved, but also the base body and parts in different shapes can be subjected to self-adaptive sealing, and the using effect is good.

The present invention provides a control device for an internal combustion engine that can improve fuel efficiency by warming up the engine early while suppressing the occurrence of fuel dilution. [Solution] The control device controls an internal combustion engine equipped with a piston jet that injects lubricating oil onto the back surface of a piston and an oil pump that changes the unit discharge amount, which is the amount of lubricating oil discharged per revolution. The control device is equipped with a processing circuit. When the oil temperature is below a predetermined temperature, the processing circuit closes an electric valve provided in the supply passage for lubricating oil to the piston jet to stop the injection of lubricating oil from the piston jet (S200). When the oil temperature is below a predetermined temperature, the processing circuit maintains the unit discharge amount of lubricating oil discharged from the oil pump to be above a predetermined amount while the injection of lubricating oil from the piston jet is stopped (S210).

A lubrication system includes a heat exchanger having an inlet and an outlet, a gearbox lubrication circuit fluidly connecting a gearbox between the inlet and the outlet of the heat exchanger, a stator lubrication circuit fluidly connecting a stator between the inlet and the outlet of the heat exchanger, and a rotor lubrication circuit fluidly connecting a rotor between the inlet and the outlet of the heat exchanger. The rotor lubrication circuit includes a rotor circuit mechanical valve located upstream of an inlet to the rotor and downstream of the outlet of the heat exchanger. Also, the rotor circuit mechanical valve is configured to move from a closed position to an open position when a pressure immediately upstream of the rotor circuit mechanical valve reaches a rotor circuit mechanical valve cracking pressure.

An internal combustion engine comprises a pump, an oil filter, a supply channel, a return channel, a soot separator, and a pressure relief valve. The pump delivers oil, and the oil filter filters the oil delivered by the pump. The supply channel extends from the pump through the oil filter, and the return channel branches off from the supply channel. The soot separator collects the soot contained in the oil in the return channel. The pressure relief valve is located in the return channel; when it opens, the oil, which enters the return channel as a split stream, flows through the soot separator.

The application discloses a lubricating system, a lubricating system control method and a vehicle, and relates to the technical field of vehicle lubricating systems, wherein the lubricating system comprises an engine box body, a gearbox box body, a first pipeline assembly and a second pipeline assembly; the engine box body is provided with a first inner cavity; the gearbox box body is provided with a second inner cavity used for storing lubricating oil; the first pipeline assembly is connected with the first inner cavity and the second inner cavity, and is used for pumping the lubricating oil in the first inner cavity to the second inner cavity; and the second pipeline assembly is used for distributing the lubricating oil in the second inner cavity to an engine oil passage and a gearbox oil passage. The technical scheme provided by the application integrates the engine lubricating system and the gearbox lubricating system into one set of lubricating system, stores the lubricating oil in the second inner cavity, cancels the function of storing the lubricating oil in the first inner cavity, thereby reducing the size of the engine box body, improving the integration of the vehicle engine and the gearbox, and improving the power assembly mounting property.

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.

A valve system (10) including a first valve body (20) defining an outlet (24) configured to distribute a fluid; a second valve body (22) configured to be received within the first valve body and to be transitioned between at least a first position corresponding to a fully-open state of the valve system and a second position corresponding to a closed state of the valve system; a motor (40) configured to transition the second valve body between the first position and the second position by rotating a shaft (42) about an axis of rotation (A-R) in a series of angular steps; and a control unit (60) configured to operate the motor to transition the second valve body between the first position and the second position.

To accurately diagnose abnormalities in hydraulic sensors, such as seizing. [Solution] The engine 10 includes an oil pump 11, a main gallery 16, and a hydraulic pressure sensor 20. The electronic control unit 21 has a processing circuit 22. The processing circuit 22 performs a first determination process, a second determination process, and a diagnostic process. In the first determination process, it is determined whether the fluctuation amplitude of the output of the hydraulic pressure sensor 20 remains small when the operating state of the oil pump 11 is a stable operating state with a low rate of change in hydraulic pressure. In the second determination process, it is determined whether the amount of change in the output of the hydraulic pressure sensor 20 has decreased when the operating state of the oil pump 11 is a transient operating state with a high rate of change in hydraulic pressure. In the diagnostic process, if the first determination process determines that the fluctuation amplitude remains small, and the second determination process determines that the amount of change in the output has decreased, it is diagnosed that an abnormality has occurred in the hydraulic pressure sensor 20.

The present application relates to an internal combustion engine and an internal combustion engine system. The internal combustion engine has an oil pump, an oil filter, a supply flow path, a return flow path, a soot separation portion, and a pressure relief valve. The oil pump ejects oil. The oil filter filters the oil ejected from the oil pump. The supply flow path is provided so as to extend from the oil pump through the oil filter. The return flow path branches from the supply flow path. The soot separation portion traps soot contained in the oil in the return flow path. The pressure relief valve is disposed in the return flow path, and, by opening, causes the oil that is branched to the return flow path to flow through the soot separation portion.

The utility model discloses a safe oil pump capable of preventing oil pumping, which comprises a machine body, an oil inlet cavity is arranged on the machine body, an oil inlet pipe is fixedly arranged on the inner wall of the oil inlet cavity, a buffer cavity is arranged on one side of the oil inlet pipe, an oil hole is communicated between the buffer cavity and the oil inlet cavity, a pair of fixing blocks is fixedly arranged in the buffer cavity, and the fixing blocks are fixedly arranged on the machine body. The engine oil pump comprises two fixing blocks and oil holes, the two fixing blocks are arranged in the middle of the engine oil pump, C-shaped grooves are formed in the opposite sides of the two fixing blocks, the two C-shaped grooves are arranged in a splayed shape, the oil holes are located below the C-shaped grooves, and a buffering assembly which is in reciprocating sealing sliding connection from a flaring to a necking is arranged between the C-shaped grooves. The safe oil pump capable of preventing oil pumping is lower in cost and reliable in performance, and meets the requirements of an engine for stable oil pressure and flow.

A car (1) having: at least one electric motor (6) connected to the two drive wheels (4); a first generation assembly (7) having a first electric generator (9) and a first internal combustion engine (8), which is mechanically connected only to the electric generator (9) and, therefore, is mechanically independent of the drive wheels (4); a second generation assembly (7) having a second electric generator (9), which is mechanically independent of the first electric generator (9), and a second internal combustion engine (8), which is mechanically connected only to the electric generator (9) and, therefore, is mechanically independent of the drive wheels (4); and two interconnection ducts (29), which establish a hydraulic communication between a first lubrication circuit (28) of the first internal combustion engine (8) and a second lubrication circuit (28) of the second internal combustion engine (8), so that part of the lubricating oil flowing in the first lubrication circuit (28) can flow to the second lubrication circuit (28) and vice versa.

To prevent engine stall from occurring even when accidental fire occurs in an engine, in a controller for a variable displacement oil pump that supplies lubricant to a hydraulically driven VVT mechanism and an oil gallery.SOLUTION: An engine control module 100, which controls a variable displacement oil pump 52 that supplies lubricant to a hydraulically driven VVT mechanism 38 and an oil gallery 50, reduces a target oil pressure of the oil pump 52, which is set according to an operating state of an engine 10, when accidental fire occurs in the engine 10, and controls an oil pressure of the lubricant discharged from the oil pump 52 based on the target oil pressure.SELECTED DRAWING: Figure 1

The application discloses a control system and method of 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 control module, a double-pipe coordination module and a shock monitoring module; through the synergistic effect, the application identifies and avoids the cross unstable interval, dynamically adjusts the damping and flow path switching, and realizes real-time monitoring and graded early warning, so that the electronic oil pump can effectively avoid problems such as pressure shock, oil film thickness discontinuity and uneven hydraulic execution caused by the imbalance of the pump characteristic curve and the pipe impedance matching when the electronic oil pump is in a low-flow working condition or an engine pre-lubrication boundary state; therefore, the application completely solves the technical problem that the electronic oil pump in the prior art is prone to oscillation in a boundary working condition, and greatly improves the stability and reliability of the system.