903 results about "Motor oil" patented technology

The invention provides stamping equipment for automobile engine oil pan production, and belongs to the technical field of oil pan stamping equipment. Which comprises a stamping equipment body and is characterized in that a lower die and an upper die are installed on the stamping equipment body, a first supporting frame is installed on one side of the stamping equipment body, and a second supporting frame is installed on the other side of the stamping equipment body; an automobile oil pan material plate is placed on the top of the first supporting frame. By arranging the auxiliary feeding mechanism and the auxiliary discharging mechanism, the auxiliary feeding mechanism can be utilized, workers do not need to make direct contact with an automobile oil pan material plate, the automobile oil pan material plate can be rapidly and stably transferred to the position between the lower die and the upper die, and accurate alignment can be achieved after transferring, and the automobile oil pan material plate can be reliably placed on the top of the lower die; and compared with a traditional manual handheld plate feeding mode, the feeding device is safer and more reliable.

A turbocharger device relates to the technical field of internal combustion engine supercharging devices and comprises a bearing body, an oil supply pipeline and an integrated bearing. The integrated bearing comprises a pressing end integrated bearing and a vortex end integrated bearing which are arranged in parallel in the axial direction, the bearing body comprises a bearing seat inner wall face, a supporting sleeve is rotationally arranged in the bearing seat inner wall face, and the pressing end integrated bearing and the vortex end integrated bearing are located on the two sides of the supporting sleeve; the pressure end integrated bearing and the vortex end integrated bearing are correspondingly connected with a first oil supply pin and a second oil supply pin which are communicated with inner cavities of the pressure end integrated bearing and the vortex end integrated bearing in the radial direction, and the first oil supply pin and the second oil supply pin are fixed to the bearing body. The split type bearing system is used for solving the problems that although a split type bearing system in the prior art avoids the influence of high temperature, engine oil consumption is large, inner oil film lubrication is insufficient, and cost is high; although an integrated bearing system realizes low cost and structure simplification, the key problems of sufficient lubrication of an inner oil film, high-temperature reliability of a thrust surface and oil control capacity of a gas compressor side are obviously short.

The utility model discloses an oil-gas separation mechanism and an engine, the oil-gas separation mechanism comprises an air inlet cam shaft, a chain wheel, a centrifugal separation disc and a breather pipe, and the air inlet cam shaft is provided with a first channel penetrating through the two ends of the air inlet cam shaft; the chain wheel is meshed with a timing chain of an engine and used for driving the air inlet cam shaft to rotate. The centrifugal separation disc is connected with one end of the air inlet cam shaft and provided with a separation cavity, the separation cavity communicates with the first channel, fan blades are arranged in the separation cavity, the centrifugal separation disc rotates to suck mixed oil gas into the separation cavity, and the fan blades guide gas into the first channel and throw engine oil out of the separation cavity. The breather pipe communicates with the end, away from the centrifugal separation disc, of the first channel and is used for exhausting gas in the first channel. According to the oil-gas separation mechanism, the oil-gas separation structure can be arranged on the air inlet cam shaft, the space occupied by the oil-gas separation structure in an engine is reduced, the internal structure of the engine is simplified, and the manufacturing difficulty and manufacturing cost of the engine are reduced.

The invention discloses an engine multi-vehicle-type adaptive NVH quality optimization method and system, and belongs to the technical field of automobile engine debugge.The method comprises the steps that after an engine is installed on a to-be-adapted vehicle, vehicle working condition data are collected in real time, the vehicle working condition data comprises a vehicle speed, an accelerator opening degree, an engine rotating speed, a gear, a hydraulic torque converter locking state and an engine oil temperature signal; the vehicle working condition data is compared with the working condition of the engine noise sensitive working condition, and whether the engine noise sensitive working condition is entered or not is recognized; when the engine has the noise sensitive working condition, an NVH control strategy embedded in an engine electronic control unit is activated; the NVH control strategy comprises adjustment of an engine ignition angle and oil injection parameters; the engine is controlled according to the ignition angle optimization control instruction and the oil injection parameter optimization instruction; and when the vehicle runs out of the working condition of the noise sensitive working condition of the engine or gear shifting is completed, the conventional combustion control logic is recovered. And the rising rate of the pressure in the cylinder is effectively reduced, so that the structural knocking noise within the range of 150-600Hz is inhibited.

An oil distribution system for an internal combustion engine valvetrain includes a rocker arm base member and a base plate. The rocker arm base member includes a distribution slot disposed into a base lower surface, a plurality of receiving holes extending from a sidewall and / or from the base upper surface of the rocker arm base member into the distribution slot, and a plurality of oil distribution holes passing from the distribution slot through the base upper surface. The base plate being configured to cover at least a portion of the base lower surface including at least a portion of the distribution slot. In operation, the distribution slot receives oil from the plurality of oil receiving holes, passes at least a first portion of the oil to the plurality of oil distribution holes, and the plurality of oil distribution holes discharge at least a second portion of the oil past a base upper surface to provide lubrication to a portion of a rocker arm or other valvetrain components.

The utility model relates to the field of conducting rings, in particular to a conducting ring for an oil cooling shaft, which comprises a conducting ring casting, the conducting ring casting is of an annular structure, the inner wall of the conducting ring casting is fixedly connected with a mounting ring, carbon fiber yarns which are arranged at equal intervals are mounted on the mounting ring, and shaft static electricity is transmitted to the conducting ring casting through the carbon fiber yarns. According to the utility model, shaft static electricity generated by the motor rotating shaft is transmitted to the conductive ring casting by using the carbon fiber yarns and is further transmitted to the motor shell, so that the shaft static electricity is effectively prevented from being accumulated on a bearing or other conductive parts, the risks of local overheating and bearing abrasion are reduced, the operation reliability of the motor is remarkably improved, and the service life of the motor is remarkably prolonged. Through the arrangement of the rubber oil baffle plate, not only is excessive engine oil prevented from being in contact with the carbon fiber yarns, but also the rubber oil baffle plate is convenient to replace and clean through the detachable locking nut and positioning block structure, and the maintenance cost and time are reduced.

The invention discloses an anti-sliding friction force testing device under the action of high-temperature hot air, which comprises a loading sealing device, an air circulation heating system, a static force loading system and a temperature measuring system, the loading sealing device comprises a bearing frame, a bottom plate, a lower flange gland, a test piece, an upper flange gland, an upper exhaust cabin, a disc type loading tool, an upper pressing plate, a window and a window pressing plate, the air circulation heating system comprises a heating system and a ventilation system, and the air circulation heating system is connected with the loading sealing device through a circulation pipeline; the static force loading system comprises an oil source control upper computer, an oil source, a cooler, a hydraulic substation, a static force loading upper computer, a servo oil cylinder, a servo controller and a switching cabinet, and the temperature measurement system comprises a thermocouple sensor, a data acquisition instrument and a temperature measurement upper computer. The test system can be widely applied to the sliding friction resistance test of various wrapped interlayer assembly structures in normal temperature and high temperature states and the design and construction of the test system.

The invention discloses an engine oil temperature control lubricating system for a hybrid electric vehicle, and belongs to the field of engine lubricating systems. Comprising a main oil duct, an engine oil pan, an engine oil pump and an oil duct pipe set, the engine oil pan is used for storing engine oil, the engine oil pump is used for pumping the engine oil in the engine oil pan, and the oil duct pipe set communicates with the engine oil pump and the main oil duct and comprises a first oil duct and a second oil duct which are arranged in parallel; the heater is opened to heat engine oil flowing through the first oil duct when the engine oil temperature is lower than a second preset temperature, and is closed when the engine oil temperature is higher than or equal to the second preset temperature; and the second oil duct comprises a second temperature control valve, and the second temperature control valve is opened when the temperature of the engine oil is larger than or equal to the second preset temperature, so that the engine oil further flows into the main oil duct through the second oil duct. When the engine of the hybrid electric vehicle is in cold start, the temperature of the engine oil can be rapidly increased through the heating piece, so that abnormal sound and abrasion of the engine when the temperature of the engine oil is too low can be well improved.

The invention discloses an engine oil consumption calculation and early warning method for a vehicle engine. The engine oil consumption calculation and early warning method comprises the following steps that S1, engine operation parameters are obtained, wherein engine rotating speed and fuel consumption parameters in engine operation data are obtained; s2, extracting engine oil consumption by interpolation: extracting the engine oil consumption under a corresponding working condition from a pre-constructed engine oil consumption model through an interpolation method according to the engine rotating speed and the fuel consumption; s3, accumulative calculation and unit conversion, wherein accumulative calculation and unit conversion are conducted on the multiple sets of engine oil consumption, and accumulative engine oil consumption is obtained; and S4, comparison and alarm triggering: triggering a corresponding alarm prompt according to a comparison result of the accumulated engine oil consumption and a preset engine oil consumption limit value. By means of the method, real-time and accurate calculation of the engine oil consumption under the full working condition of the engine is achieved, the hysteresis quality and estimation errors of manual inspection are broken through, and engine oil consumption data are upgraded to a real-time continuous value from a regular discrete value.

The utility model is applicable to the technical field of engine parts, and provides a steel connecting rod, which comprises a connecting rod body and a connecting rod tile cover, the connecting rod body is detachably connected with the connecting rod tile cover, one end of the connecting rod body far away from the connecting rod tile cover is provided with a small end hole, and the other end of the connecting rod body is connected with the connecting rod tile cover to form a large end hole. A shaft sleeve is arranged in the small-end hole, a bearing bush is arranged in the large-end hole, and an oil throwing spoon is detachably installed on the connecting rod bush cover. The shaft sleeve and the bearing bush are respectively arranged at the small-end hole and the large-end hole of the connecting rod, so that the abrasion can be effectively reduced, the maintenance cost is reduced, the split type oil throwing spoon is simple and reliable to install, and the oil throwing spoon is detachably installed and fixed by using a stamping structural member, so that engine oil can be effectively lubricated, the strength of connecting rod parts damaged by welding is also avoided, and the service life of the connecting rod is prolonged. And the risk is greatly reduced.

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 discloses an engine oil filter with a spiral spoiler. The engine oil filter comprises a bottom shell, an outer cover is fixedly connected to the bottom shell, a liquid inlet and a liquid outlet are formed in the bottom shell, a check valve is arranged on the liquid inlet, a connecting cylinder is fixedly connected into the liquid outlet, a filter element structure is fixedly connected to the connecting cylinder, and a bypass valve is arranged on the filter element structure; the flow guide assembly comprises a first spiral spoiler, the first spiral spoiler is located between the filter element structure and the outer cover, the first spiral spoiler is rotationally connected to the annular base, the bypass valve is fixedly connected with the annular base through a connecting mechanism, a supporting mechanism is fixedly connected into the outer cover, and a stop mechanism is arranged between the supporting mechanism and the annular base. Impurities of engine oil can be prevented from being gathered at a certain position, the use of a filtering part is more balanced, the durability of the device is improved, meanwhile, oil liquid can flow along the spoiler during operation, and large particles generate centrifugal force, so that the oil liquid is thrown to the wall surface and flows to the bottom along the spoiler, and the blockage degree of the filter element is reduced.

The invention discloses an oil level gauge guide pipe and forming equipment thereof, relates to the technical field of engine lubricating systems, and aims to solve the technical problem that sealing performance and mounting convenience of a traditional oil level gauge guide pipe are difficult to consider at the same time, and the oil level gauge guide pipe comprises an oil level gauge guide pipe body, a mounting pipe and a sealing ring. The contact area with an oil pan opening is increased by arranging the sealing ring, so that the sealing performance is improved, through the structural design of the mounting pipe, the nut is rotated through a wrench, so that the nut moves relative to the threaded groove, the mounting pipe is pushed to be inserted into the sealing ring, axial support is provided for the sealing ring through the supporting rod, and the sealing ring is prevented from being axially folded; when the installation pipe is completely inserted into the sealing ring, the sealing ring is expanded and is in close contact with the oil pan opening, compared with a traditional direct hard insertion mode, the installation mode is more time-saving and labor-saving, and the technical problem that a traditional oil level gauge guide pipe is difficult to consider sealing performance and installation convenience at the same time is solved.

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 present disclosure provides an engine oil cooling structure of an engine. In the engine oil cooling structure of an engine, the engine includes a crankcase, the crankcase is provided with an oil filter mounting chamber having a cylindrical shape, the cooling structure includes a water channel, a water inlet of the water channel communicates with a water pump, the crankcase is further provided with a main oil channel, the crankcase is further provided with a heat conducting thin wall, an inner cavity of the heat conducting thin wall form the oil filter mounting chamber, the oil filter mounting chamber communicates with the main oil channel, the water channel is arranged around an outer side wall of the heat conducting thin wall, and a water outlet of the water channel communicates with a cooling water channel arranged in the same direction as and adjacent to the main oil channel.

The utility model discloses a drilling device for processing an American bucket with an engine oil nozzle, which comprises a fixing plate, a first sliding rail frame fixedly connected onto the fixing plate, a second sliding rail frame fixedly connected onto the fixing plate, a first fixing frame fixedly connected onto the fixing plate, a driving motor fixedly mounted on the first fixing frame, and a screw rod rotationally connected onto the second sliding rail frame. A sliding conveying table is slidably connected to the first sliding rail frame, the sliding conveying table is in threaded connection with the lead screw, and a stabilizing frame is fixedly connected to the sliding conveying table. Through cooperation of the driving motor, the lead screw, the sliding conveying table, the first distance sensor, the second electric push rod, the clamping and fixing device, the second distance sensor, the double-rod air cylinder, the movable block body, the drilling machine and the third distance sensor, the integrated machining steps of conveying, clamping and fixing and drilling are automatically carried out on the nozzle barrel; the machining efficiency of the nozzle barrel is improved, and the tedious steps needing to be carried out step by step when the nozzle barrel is machined are reduced.

This utility model belongs to the technical field of motorcycle parts, and relates to an oil cooling structure for a motorcycle engine. It includes a crankcase, in which a crankshaft is housed and filled with engine oil. One end of the crankshaft extends out of the crankcase and is fitted with a fan. The fan is covered by a fan shroud, the outer end of which has an axial air inlet and a circumferential air outlet on its side wall. Several cooling fins are arranged on the side of the crankcase near the fan shroud. The inner side of the cooling fins contacts the engine oil and transfers heat, while the outer side is covered by a radial extension of the fan shroud. An air outlet communicating with the air outlet is provided on the radial extension of the fan shroud. The oil cooling structure for a motorcycle engine provided by this utility model can significantly improve the oil cooling effect of the engine.

The application discloses a system and method for processing virtual development bench hardware-in-the-loop heat dissipation, and is used for improving a hardware-in-the-loop running environment. The system comprises a flat plate heat exchange module, a fan module, an oil inlet pipeline, a fan control module, a hardware-in-the-loop cabinet, an oil outlet pipeline, an oil quantity measurement unit, an oil sprayer, a cooling oil tank, a temperature sensor, a cooling tank connecting pipeline and an oil circulation pump. The flat plate heat exchange module is connected with the oil inlet pipeline, the cooling tank connecting pipeline, the cooling oil tank and the oil outlet pipeline in sequence. The flat plate heat exchange module is provided with the fan module on one side, the fan module is connected with the fan control module, the hardware-in-the-loop cabinet is connected with the fan control module, the temperature sensor and the oil circulation pump, the temperature sensor is arranged on the cooling tank connecting pipeline and the sensing head of the temperature sensor is immersed in the oil medium, the oil circulation pump is installed at the connecting port of the cooling tank connecting pipeline and the oil inlet pipeline, and the oil quantity measurement unit and the oil sprayer are both installed on the cooling oil tank and the heads of the oil quantity measurement unit and the oil sprayer are both immersed in the oil medium to a preset depth.

The utility model discloses a novel boundary pumping temperature determinator, including the casing and transparent oil pot, the inner chamber of casing is provided with transparent oil pool, the top of transparent oil pool is fixedly linked with one side of transparent oil pot through reflux pipeline, the right of casing is equipped with temperature control component, the inside of transparent oil pot is equipped with measuring assembly, the bottom of transparent oil pot is equipped with reflux mechanism, the utility model relates to measuring device technical field. The novel boundary pumping temperature determinator has greatly reduced the influence of environment on the determination result, does not pass through the rotor viscometer determination viscosity mode evaluation engine oil low temperature pumping performance, through setting up the reflux mechanism, utilize the drive of frequency conversion motor to cooperate the synchronous regulation of temperature control component and electric heating jacket, simulate the process of engine work, shutdown, freeze to start, more real simulation winter engine oil pumping condition in the engine, better evaluation engine oil pumping performance.

This oil evaluation device is provided with a calculation processing unit that calculates, on the basis of a measurement result of the density of oil in an internal combustion engine, the proportion of soot mixed into the oil as an evaluation index.

This invention discloses a method for testing the anti-coking performance of diesel engine oil in turbochargers. The main design concept of this invention lies in designing a full-process test based on engine operation, including high smoke conditions, low temperature and low load conditions, high temperature and high load conditions, and multiple rounds of cyclic testing to simulate the high and low temperature fluctuations of engine oil. This achieves a comprehensive assessment of the impact of engine oil performance changes on turbocharger coking. Furthermore, engine oil sampling is performed at predetermined stages to monitor relevant physicochemical properties. Further, the turbocharger is disassembled and evaluated after the test procedure, enabling an accurate evaluation of the engine oil's anti-coking performance. This facilitates the matching development of engine oils during engine development and avoids problems such as turbocharger damage and reduced power caused by using unsuitable engine oil. This invention comprehensively covers soot dispersion, high-temperature shear resistance, and temperature oscillation, providing significant guidance for the comprehensive evaluation of engine oil's anti-coking performance.

The utility model relates to the technical field of engines, and discloses an engine oil bubble eliminating device, an external engine oil tank and an engine system.The engine oil bubble eliminating device comprises a bubble eliminating bin body which extends in the first direction, and an oil passing opening is formed in a bottom plate of the bubble eliminating bin body; the first end of the oil return pipe is communicated with the engine body, and the second end is communicated with the inner cavity; in the first direction, the inner wall of the side, deviating from the oil return pipe, of the defoaming bin body is a first arc-shaped inner wall, and the first arc-shaped inner wall sinks towards the side deviating from the oil return pipe. In the working process, engine oil enters from the first end of the oil return pipe and is sprayed out from the second end until the engine oil makes contact with the first arc-shaped inner wall and then continues to flow at a high speed in the extending direction of the first arc-shaped inner wall, so that rotational flow is formed, and a large number of bubbles in the engine oil are eliminated under the action of centrifugal force; and finally, the engine oil flows into the external engine oil tank body through the oil passing port, so that bubbles contained in the engine oil during oil return can be greatly eliminated, and faults such as oil injection of the oil-gas separator are effectively reduced.

The utility model provides a drilling all-in-one machine oil way switching assembly which comprises a drilling machine motor, a two-position three-way valve connected with the drilling machine motor and a hydraulic hammer connected with the two-position three-way valve, and the drilling machine motor is provided with a drilling machine motor oil inlet, a first drilling machine motor oil return opening and a second drilling machine motor oil return opening. The drilling machine motor is connected with the two-position three-way reversing valve to achieve lifting and impacting of the hydraulic hammer, the hammer falling effect is good, reversing stability is excellent, and reversing impact force is small.

The invention discloses a diesel engine condensate water collecting system, and relates to the technical field of waste gas system condensate water collection, the diesel engine condensate water collecting system comprises an oil-gas separator used for separating engine oil in waste gas, a transmission pipeline, a condensate water separator, a condensate water collecting tank and an exhaust pipe, the oil-gas separator used for separating the engine oil in the waste gas is installed on a marine diesel engine; one end of the transmission pipeline is connected with an exhaust port of the oil-gas separator; the condensate water separator is connected with the transmission pipeline; according to the diesel engine condensate water collecting system, the condensate water separator and the condensate water collecting tank are connected through the conveying pipeline, engine oil and water vapor remaining in waste gas can be separated, environmental pollution caused by engine oil gas discharge is reduced, the engine oil and the water vapor separated by the condensate water separator are gathered into the condensate water collecting tank, and therefore oil and water are collected; therefore, the service life of the marine diesel engine is effectively prolonged, and the marine diesel engine has a good use prospect.

The utility model discloses an automobile engine oil cooler shell structure capable of preventing oil leakage, which relates to the technical field of engine oil cooler shells and comprises an engine oil cooler shell, and one side of the top of the engine oil cooler shell is fixedly connected with an oil inlet pipe. By arranging the limiting assembly, the first fixing plate can be pressed downwards, the first fixing plate can drive the movable block to slide in the supporting sleeve through the movable rod, and when the movable block makes contact with the limiting block, the limiting rod can be pushed, so that the limiting rod is inserted into a limiting groove formed in the side face of the supporting sleeve; the first fixing plate limits and fixes the position of the threaded sleeve, and the phenomena that vibration generated when an automobile engine works easily enables the threaded sleeve to loosen, the sealing performance of the threaded sleeve is reduced, and oil leakage happens to the connecting position of the engine oil cooler and the automobile engine oil connecting pipe for a long time are avoided; therefore, convenience is brought to the use of the automobile engine oil cooler.

This application relates to the field of texturing machines and discloses a texturing machine oil circulation device, including a base plate. An oil return tank is fixedly connected to the upper end of the base plate via a vertical rod. An oil return port is fixedly connected to the periphery of the oil return tank. A hopper is fixedly connected to the bottom of the oil return tank, and a discharge pipe is fixedly connected to the bottom of the hopper. A solenoid valve is installed inside the discharge pipe, and a collection box is threaded to the bottom end of the discharge pipe. A filter box is provided at the upper end of the base plate, and a bend is provided at the upper end of the filter box. The bend is fixedly connected to the oil return tank. The filter box includes a box body, glass fiber filter paper, a sintered metal filter element, and a sealing plate. The box body is fixedly connected to the upper end of the base plate via a second vertical rod and is fixedly connected to the bend. This application has the following advantages and effects: coarse and fine filtration of lubricating oil can be performed through the filter screen and filter box; and larger impurities filtered out by the filter screen can be easily cleaned through the solenoid valve and collection box.

The invention provides a two-stroke air entrapment direct injection methanol engine. The two-stroke air entrapment direct injection methanol engine comprises an air cylinder body crankcase assembly, a crankshaft assembly, an engine oil lubricating assembly, an air inlet assembly, an oil supply assembly, a starting assembly, an air pump assembly and a control assembly. According to the application, the methanol use environment is met by adopting the design of internal preheating and combustion chamber preheating of the special fuel pump for methanol and heat energy generated by air compression in the fuel rail, and fuel atomization is promoted by gas pressure and high-speed flow generated by air compression of the direct-connected air pump assembly through a gas-entrained injection technology; meanwhile, uniform mixing of gas and fuel oil is enhanced, homogeneous combustible mixed gas is more easily formed in the combustion chamber, the first-stage fuel oil pump and the second-stage fuel oil pump are connected in series, and the stability of the using pressure of methanol fuel oil is effectively guaranteed; according to the preheating function, the engine can rapidly enter the optimal working temperature in the low-temperature environment during low-temperature starting and low-temperature operation, and therefore the emission performance and the working performance of the engine are improved.

The embodiment of the invention provides an oil pump assembly, an engine lubricating system, an engine assembly and a vehicle. The oil pump assembly comprises: a housing; and the plurality of first oil pumps are arranged in the shell side by side. According to the engine oil pump assembly provided by the embodiment of the invention, the engine oil of the engine assembly can be recycled through the multiple first oil pumps, and effective oil return of the engine oil in the engine assembly can be achieved.

The utility model discloses a recovery device for an oil rail pressure testing machine, which comprises a recovery cover, an oil leakage pipe, a filter screen, an electric heating wire and an oil receiving tank, an inlet of the oil leakage pipe is connected to the bottom of the recovery cover; the filter screen is mounted at an inlet of the oil leakage pipe; the electric heating wire is mounted in the filter screen; the engine oil recovery device has the advantages that engine oil is guided to the oil leakage pipe through the inner wall of the recovery cover and then flows into the oil receiving tank, a complete recovery path is formed, cleaning frequency is reduced, and cost is saved.