21results about "Lubricant level maintainance" patented technology

An adjusting method for achieving automatic balance of lubricating oil in an oil pan of a marine diesel engine comprises the steps that firstly, an oil suction pipe and an oil supplementing pipe are installed in the oil pan, a pipe opening of the oil suction pipe is vertically upward and away from the bottom of the oil pan by a preset height, and a pipe opening of the oil supplementing pipe is close to the bottom of the oil pan; (2) installing a balance oil tank and connecting the balance oil tank with an oil pan through an oil suction pump and an oil recharging pump with the displacement smaller than that of the oil suction pump, (3) injecting lubricating oil into the balance oil tank and the oil pan, and (4) starting the oil suction pump and the oil recharging pump to work continuously at the same time when the diesel engine runs, and conveying the lubricating oil in the balance oil tank into the oil pan through the oil recharging pump; when the liquid level of the lubricating oil in the oil pan exceeds the height of the orifice of the oil suction pipe, the oil suction pump pumps the lubricating oil higher than the orifice of the oil suction pipe back to the balance oil tank from the oil pan, so that the liquid level of the lubricating oil is always kept at the height of the orifice of the oil suction pipe, and stable and automatic balance of the amount of the lubricating oil in the oil pan is achieved. The liquid level of the oil pan is kept dynamic and constant during working, the requirement of the diesel engine for lubricating oil is guaranteed, and the device has the advantages of being simple in structure, convenient to operate, capable of running automatically, safe and reliable.

The invention relates to a mechanical part (30) for an aircraft turbomachine, the mechanical part being made of metal and comprising at least one profiled surface (34) configured to ensure oil flow during operation. According to the invention, said surface (34) comprises a coating (40) that is more hydrophobic and / or lipophobic than the surface, or a surface texture (39) that renders said surface more hydrophobic and / or lipophobic. (Shorthand figure: Figure 4)

The oil circulation arrangement includes a lower oil inlet portion, a filter unit (10) of a vehicle transmission filter, and an outlet (5) located higher than the inlet portion for immersion in the oil in the crankcase. The arrangement includes one or more valves (1) integrated into the inlet portion, each selectively allowing a flow of crude oil (F) when a float (2) provided in the valve is raised, releasing at least one shutter (21) movable according to the float's position. Access to the filter unit in the valve is thus opened when this float (2) is subjected to the buoyant force (Arch). A return element (20) is coupled to the access closure means, including the shutter, and prevents air from entering through this access, which, by the return effect without sufficient opposing buoyant force (Arch), remains closed. Figure from the summary: Figure 1

The application discloses an engine oil suction emptying prevention device and method, and relates to the field of engine oil suction emptying prevention devices.The engine oil suction emptying prevention device comprises an oil pump, an oil filter and a main oil passage, the oil filter is connected to an oil suction pipe inlet of the oil pump and is arranged below an oil liquid level in an oil pan, the main oil passage is connected to an oil suction pipe outlet of the oil pump, the oil filter is used for sucking the oil in the oil pan to the main oil passage under the action of the oil pump, at least one electromagnetic controller is arranged at a position close to the oil filter at the bottom of the oil pan, when the oil liquid level fluctuation exceeds a first preset value, the oil filter can adjust the position under the action of the electromagnetic controller, so that the oil filter is always below the oil liquid level, thereby preventing the engine oil from being sucked empty, and improving the service life of the engine.

The invention is an oil sump system, having a housing, an oil pump capable of pumping oil, an inlet connected to the oil pump via a first piping; a second piping for recirculating oil pumped by the pump back to the housing for use in lubricating internal components housed by the housing, an oil sump fixture comprising a mesh screen; and an oil sump cover. The mesh screen may be positioned above the inlet such that when the oil level is lowered over a portion of the mesh screen when the system is subjected to a transient G-load, the surface tension created over the oil in the mesh maintains the level of the oil over the first portion at the mesh screen.

To provide an internal combustion engine control device capable of suppressing reduction in pressure of engine oil supplied to a hydraulic device when reducing a rotational speed of an internal combustion engine.SOLUTION: An internal combustion engine control device 10 controls an internal combustion engine 20 applied to a vehicle 100, the internal combustion engine comprising a dry sump type engine oil supply device 40 that supplies engine oil to a hydraulic device. When reducing a rotational speed of the internal combustion engine, the internal combustion engine control device increases an amount of gas suctioned into a cylinder 30 of the internal combustion engine.SELECTED DRAWING: Figure 2

Fluid supply system for supplying a machine assembly (A) with fluid, in particular for supplying an engine or transmission of a motor vehicle, wherein the fluid supply system comprises: a) a reservoir (6) for storing the fluid, b) a rotary pump (5) with a first pump port (51) and a second pump port (52), c) a drive (7) for driving the pump (5), d) a first fluid line (1) with a first valve (11) and a second fluid line (2) with a second valve (21), e) wherein the first fluid line (1) connects the first pump port (51) to the reservoir (6) and the second fluid line (2) connects the second pump port (52) to the reservoir (6), and f) the rotary pump (5) is operable in a normal operation in which the rotary pump (5) rotates in a first delivery direction and in an alternative operation in which the rotary pump (5) rotates in a second delivery direction.wherein g) in alternative operation of the rotary pump (5) the first valve (11) disconnects the first pump connection (51) from the reservoir (6) and in normal operation of the rotary pump (5) the second valve (21) disconnects the second pump connection (52) from the reservoir (6).

The invention discloses an engine oil supply system and a control method thereof and a vehicle, the engine oil supply system comprises an engine oil main pipeline, a first oil suction assembly and a second oil suction assembly, the first oil suction assembly is communicated with the engine oil main pipeline, and the second oil suction assembly is selectively communicated with the engine oil main pipeline; the first oil suction assembly comprises a first oil pump and a first oil collector, and a first oil suction opening of the first oil collector is formed in a first area of the bottom of the oil pan. Wherein the first area is close to the head of the target vehicle; the second oil suction assembly comprises a second engine oil pump, an electromagnetic valve and a second engine oil collector, a second oil suction port of the second engine oil collector is formed in a second area of the bottom of the engine oil pan, and the electromagnetic valve is used for controlling the opening and closing state of the second oil suction port and the communication state of the second engine oil collector and the engine oil main pipeline; wherein the second area is close to the tail of the target vehicle, and when the engine inclines or is under the limiting working condition, engine oil in the engine oil pan is gathered in the second area.

A pump structure, an engine, a powertrain and a vehicle. The pump structure (100) comprises a first transmission shaft (10) and a plurality of first pumping mechanisms (40), wherein the first transmission shaft (10) comprises a plurality of first sub-shafts (11), which are arranged in sequence in the axial direction of the first transmission shaft (10); the plurality of first pumping mechanisms (40) are configured to suck a medium out of an oil return component into an oil storage component; and at least one first pumping mechanism (40) among the plurality of first pumping mechanisms is disposed on each first sub-shaft among the plurality of first sub-shafts (11).

The invention discloses a pump structure, a generator, a power assembly and a vehicle, and belongs to the technical field of engines. The pump structure comprises a first transmission shaft, the first transmission shaft comprises multiple sections of first sub-shafts, and the multiple sections of first sub-shafts are sequentially arranged in the axial direction of the first transmission shaft; the first pumping mechanism is used for pumping the medium from the component to be subjected to oil return to the oil storage component; the number of the first pumping mechanisms is multiple, and at least one first pumping mechanism is arranged on each first sub-shaft.

This invention provides a hydraulic level sensor that can suppress the need to increase the number of circuit configurations required in the ECU to obtain output from the oil level sensor. [Solution] The oil level sensor 10 includes a first oil level detection unit 11 that enters a first state when the oil level 8 is at or above a first oil level LV1 and enters a second state when the oil level 8 is below the first oil level LV1; a second oil level detection unit 12 that enters a first state when the oil level 8 is below a second oil level LV2 which is greater than the first oil level LV1 and enters a second state when the oil level 8 is at or above the second oil level LV2; a detection circuit 13 that outputs a detection signal indicating that the oil level 8 is normal when both the first oil level detection unit 11 and the second oil level detection unit 12 are in the first state, and a detection circuit 13 that outputs a detection signal indicating that the oil level 8 is abnormal when either the first oil level detection unit 11 or the second oil level detection unit 12 is in the second state.

To suppress insufficient supply of lubricating oil when an engine is started.SOLUTION: A first negative pressure path 34 and a second negative pressure path 36 connected to a negative pressure source for generating negative pressure during operation of an engine 10 are connected to an oil tank 30 in addition to a recovery path 26 and an oil feed path 27 which are circulation paths of lubricating oil between a lubrication part 25 of the engine 10 and the oil tank 30. By providing a first check valve 35 and a second check valve 37 for closing the first negative pressure passage 34 and the second negative pressure passage 36 when the engine 10 is stopped, a negative pressure state inside the oil tank 30 is maintained even after the engine is stopped.SELECTED DRAWING: Figure 1

The utility model discloses an oil pan of a marine diesel engine, which belongs to the technical field of diesel engines and comprises an oil pool, an oil pressing pump and an oil suction pump. Two axial supporting plates and a middle transverse supporting plate are arranged in the oil pool, open holes are formed in the axial supporting plates, the middle transverse supporting plate is arranged between the two axial supporting plates, an upper baffle and a lower baffle which are arranged in a staggered mode are fixed to the middle transverse supporting plate and the axial supporting plates, the upper baffle is located above an oil suction opening of the oil suction pipe, and the lower baffle is located above an oil suction opening of the oil suction pipe. The lower baffle is located below the oil pressing pump and the oil suction pump, and the oil suction pipe is located between the upper baffle and the lower baffle. The structure of a ship engine room is not changed, the structure of the oil pan is simplified, the manufacturing cost of parts is reduced, the requirement for engine oil consumption required by long-time sailing of a ship is met, the problems that power loss of a diesel engine is increased and engine oil deteriorates due to violent fluctuation of the engine oil are solved, and the structural strength and the structural stability are good.

The application discloses an engine filter assembly structure, which comprises a filter joint used for being connected with an oil inlet of an oil pump, an oil suction pipe, one end of which is communicated with the filter joint, an oil suction disc structure comprising an upper end of the oil suction disc and a lower end of the oil suction disc, the upper end of the oil suction disc is communicated with the other end of the oil suction pipe, the lower end of the oil suction disc is two independent oil suction disc units, which are symmetrically arranged on both sides of the oil suction pipe, and a filter screen is fixedly connected to the lower end of each oil suction disc unit, and is used for filtering impurities in the engine oil, a filter fixing support is used for fixing the filter assembly on an engine body.

An internal combustion engine for a motor vehicle includes a crankcase. The crankcase has having at least two oil separation devices and having a return device. The return device has at least one first return channel that is flowable through by a first portion of the oil separated from the blow-by gas with a first of the oil separation devices, through which the first portion of the separated oil is guided from the first oil separation device into the reservoir. The return device also has at least one second return channel that is at least partially spaced apart from the first return channel and is flowable through by a second portion of the oil separated from the blow-by gas via the second oil separation device, through which second return channel the second portion of the separated oil is guided from the second oil separation device into the reservoir.

The utility model discloses an oil suction pipe of an engine. The oil suction pipe comprises a pipeline and an oil suction disc, the pipeline is a hollow pipeline with two open ends, and the upper end of the pipeline is an oil outlet; the oil suction disc is connected with the lower end of the pipeline, the whole oil suction disc is in a hollow rugby ball shape, the filter cover and the oil suction base are arranged in an up-and-down matched mode, and the filter screen is arranged between the filter cover and the oil suction base and divides the interior of the oil suction disc into an upper part and a lower part; a first through hole matched with the lower end of the pipeline is formed in the middle of the top end of the filtering cover, the lower end of the filtering cover is open and is a first opening, the first opening and the first through hole are coaxial, and the diameter of the first opening is 3-5 times that of the pipeline; the upper end of the oil suction base is open and is a second opening, the second opening and the first opening are identical in size, a round pipe communicated with the interior of the oil suction disc is arranged on the outer side face of the oil suction base and on the left side of the center line of the second opening, the two ends of the round pipe are open, the bottom opening is an oil inlet, and the diameter of the oil inlet is larger than that of the pipeline and smaller than that of the second opening.

The invention discloses an engine oil collecting device of an engine, the engine and a vehicle, and relates to the field of engine oil collecting devices.The engine oil collecting device of the engine comprises an oil pan, a first oil storage tank with the open upper end is formed in the oil pan, and the oil pan is provided with a first oil tank bottom wall; an oil circulating hole communicated with the first oil storage tank is formed in the bottom wall of the first oil tank; the oil storage shell defines a second oil storage groove with the upper end open, the oil storage shell is located below the oil pan, the upper end of the oil storage shell is arranged around the oil liquid circulation hole in the circumferential direction of the oil liquid circulation hole so that the oil liquid circulation hole can communicate with the first oil storage groove and the second oil storage groove, and the oil storage shell is constructed to be a flexible shell; the oil suction structure extends into the second oil storage tank through the open end of the second oil storage tank, an oil suction opening is formed in the lower end of the oil suction structure, the oil suction structure is fixed to the oil storage shell, and the oil suction structure is of a flexible structure. Therefore, by arranging the engine oil collecting device, the risk that engine oil of the engine is completely sucked can be reduced.

The invention relates to a turbomachine (1, 1', 1'') comprising: - a hydraulic control system (13) for the blade pitch angle (2a), - a main hydraulic circuit (15) for supplying oil to the control system (13), and - an auxiliary hydraulic circuit (16) for supplying oil to the control system (13), and - a control system for the oil supply to the auxiliary circuit (16) comprising: - a sensor (24) configured to acquire a signal (S1) representative of the blade pitch angle and transmit this signal (S1), and - a control unit (25) configured to transmit a control command (O1) to allow oil to be supplied to the control system (13) via the auxiliary circuit (16) if the signal (S1) transmitted by the sensor (24) to the control unit (25) corresponds to a decrease in hydraulic pressure in the main circuit (15). (Shorthand figure: 4)

The application discloses an optimization method of engine oil return capacity, comprising the following steps: S1, establishing an oil supply and return oil circuit simulation model, confirming the total oil supply flow and the oil supply flow of each oil supply oil channel under different working conditions of the engine; S2, judging whether the oil of each direction and each angle oil sump can completely immerse the oil suction disc inlet; if yes, executing S3; if no, executing S4; S3, judging whether the oil gas content of each direction and each angle oil suction disc inlet is less than the content threshold value; if yes, completing optimization; if no, executing S5; S4, judging whether the cylinder body, the cylinder cover and the oil sump have oil accumulation; if yes, executing S6 and then executing S2; if no, increasing the oil amount and executing S3; S5, judging whether the cylinder cover, the cylinder body and the oil sump have oil accumulation; if yes, executing S6 and then executing S3; if no, increasing the oil amount and completing optimization; and S6, optimizing the design of the oil return oil channel, the cavity and the oil sump. The application can save the test cost and shorten the test period.

To restrain inclination of an oil level OL2 by using the pump action of a scavenging pump 5 when the oil level inclines.SOLUTION: A scavenging pump 5 and a main oil pump are arranged in a lower part of a crankcase 6. The main oil pump sucks up lubricating oil from a suction port 9a of an oil strainer 9, and pumps it to each part. The scavenging pump 5 recovers the lubricating oil from a bearing part of a turbocharger, and returns it into the crankcase 6. An air introduction passage for negative pressure adjustment is connected to an oil suction passage of the scavenging pump 5, and an air introduction port 16a at a tip is opened in the crankcase 6. When an oil level OL2 inclines and reaches the air introduction port 16a, the lubricating oil near the oil level OL2 is returned into the crankcase 6 by the scavenging pump 5, and therefore further inclination of the oil level OL2 is restrained.SELECTED DRAWING: Figure 4