24 results about "Dry sump" patented technology

A work machine motor drive assembly according to the present invention comprises a motor, a fixed case, a high-speed rotation mechanism, a housing, and a low-speed rotation mechanism. The fixed case includes a first internal space and a lubricating oil passage. The lubricating oil passage supplies lubricating oil to the first internal space. The high-speed rotation mechanism is provided in the first internal space. The high-speed rotation mechanism is connected to the motor. The high-speed rotation mechanism is lubricated via a dry sump system by the lubricating oil supplied through the lubricating oil passage. The housing includes a second internal space in which lubricating oil is sealed. The housing is rotatably supported by the fixed case. The low-speed rotation mechanism is provided in the second internal space. The low-speed rotation mechanism reduces the speed of rotation by the high-speed rotation mechanism and transmits the rotation to the housing. The low-speed rotation mechanism is lubricated by an oil bath of the lubricating oil in the second internal space.

To excellently ventilate blow-by gas in an oil tank in both of natural intake operation and supercharging operation.SOLUTION: The dry sump supercharged engine 10, which circulates lubricating oil between the engine 10 and the oil tank 30, includes the first circulation passage 34, which connects the portion of the intake passage 17 downstream of the throttle valve 22 to the oil tank 30, the second circulation passage 36, which connects the portion of the intake passage 17 upstream of the compressor 20 to the oil tank 30, the first check valve 35, which is arranged in the first circulation passage 34, and the second check valve 37, which is arranged in the second circulation passage 36.SELECTED DRAWING: Figure 1

Provided is an internal combustion engine control device capable of suppressing a decrease in the pressure of engine oil supplied to a hydraulic device when the rotational speed of an internal combustion engine decreases. An internal combustion engine control device (10) controls an internal combustion engine (20) that is applied to a vehicle (100) and that is provided with a dry sump type engine oil supply device (40) that supplies engine oil to hydraulic equipment. The internal combustion engine control device increases the amount of gas sucked into a cylinder (30) of the internal combustion engine when the rotational speed of the internal combustion engine is reduced.

A hydraulic supply system (100), particularly for a drive motor (115) of a motor vehicle, comprises a reservoir (125) for hydraulic medium (110); a supply line (135) for providing hydraulic medium (110) from the reservoir (125) to a cooling or lubrication point (105), wherein hydraulic medium (110) exiting the cooling or lubrication point (105) is collected in a sump (150); and a bilge pump (130) configured to pump hydraulic medium (110) from the sump (150) into the reservoir (125). The pumping capacity of the bilge pump (130) exceeds the volume flow rate of medium (110) flowing through the supply line (135), enabling the bilge pump (130) to pump a mixture of hydraulic medium (110) and air.The storage tank (125) is designed as a pressure vessel whose internal pressure can exceed ambient pressure; and a compressed air motor (140) for driving the bilge pump (130) is provided, wherein the compressed air motor (140) is supplied with air from the storage tank (125).

An abnormality diagnosis device diagnoses the presence or absence of an abnormality in an internal combustion engine. The internal combustion engine includes a dry sump lubrication system that circulates lubricating oil between the internal combustion engine and an oil tank outside the internal combustion engine. The internal combustion engine recirculates blow-by gas in the oil tank to the intake passage. The abnormality diagnosis device includes a pressure sensor that detects a tank internal pressure that is a pressure inside the oil tank. The abnormality diagnosis device is configured to perform a diagnosis process that diagnoses presence or absence of an abnormality in a recirculation path of the blow-by gas based on whether the tank internal pressure at the time of a low-load operation of the internal combustion engine exceeds a threshold value.

A hydraulic supply system (100), in particular for a drive motor (115) of a motor vehicle, wherein the supply system (100) comprises the following elements: a reservoir (125) for hydraulic medium (110); a supply line (135) for supplying hydraulic medium (110) from the reservoir (125) to a cooling or lubrication point (105), wherein hydraulic medium (110) exiting the cooling or lubrication point (105) is collected in a sump (150); a bilge pump (130) configured to pump hydraulic medium (110) from the sump (150) into the reservoir (125). The pumping capacity of the bilge pump (130) exceeds the volume flow rate of medium (110) flowing through the supply line (135), so that the bilge pump (130) can pump a mixture of hydraulic medium (110) and air.The storage tank (125) is designed as a pressure vessel whose internal pressure can exceed ambient pressure; the bilge pump (130) is designed to separate air from the pumped hydraulic medium (110), so that essentially air-free hydraulic medium (110) is pumped into the storage tank (125).

The application discloses a dry sump engine circulating pre-lubricating system and a control method thereof. The application utilizes an electric double pre-lubricating oil pump and original oil oil circuit of an engine pump, and before the engine starts, heated oil in an oil tank is delivered to each friction pair along the original oil oil circuit through the electric double pre-lubricating oil pump, each friction pair and its upstream lubricating pipeline are filled with the heated oil, and after being heated, the heated oil is circulated and returned to the oil tank, thus breaking the conventional thinking of low-temperature pre-lubrication of the dry sump engine, and each friction pair such as a shaft neck bearing bush is pre-lubricated and pre-heated before the engine starts at low temperature, the cooperation clearance is close to the state when the engine works, and movement constraint is more sufficient, and wear caused by insufficient movement constraint of the friction pair is effectively reduced. The oil circulation of the pre-lubricating system also enhances the convection of the oil in the oil tank, the oil is more uniformly heated, and the oil in the oil tank is better pumped.

A hydraulic supply system (100), in particular for a drive motor (115) of a motor vehicle, comprises a reservoir (125) for hydraulic medium (110); a supply line (135) for supplying hydraulic medium (110) from the reservoir (125) to a cooling or lubrication point (105), wherein hydraulic medium (110) exiting the cooling or lubrication point (105) is collected in a sump (150); a bilge pump (130) configured to pump hydraulic medium (110) from the sump (150) into the reservoir (125); and an electric motor (145) for driving the bilge pump (130). Furthermore, a pneumatic motor (140) is provided for driving the bilge pump (130), wherein the pneumatic motor (140) is supplied with air from the reservoir (125). A pressure pump (205) for providing a volume flow of the medium (110) to a parking lock (215) is coupled to the bilge pump (130) by means of an overrunning clutch (210).

The invention discloses a dry and wet dual-purpose oil pan lubricating system, application thereof and an aircraft, and relates to the technical field of engines. The wet type oil pan lubricating system of the original automobile engine is modified, and a set of dry type oil pan lubricating system is added on the basis of the wet type oil pan of the automobile engine to form the wet and dry dual-purpose oil pan lubricating system. The problem that the maximum flight attitude angle of an aircraft cannot be met after a wet-type oil pan lubricating system of an existing automobile engine is used for the aircraft is solved, meanwhile, related parts of an original automobile engine lubricating system can be reserved to the maximum extent, and therefore the remanufacturing cost of remanufacturing the automobile engine into an aero-engine is reduced. According to the modified dry and wet dual-purpose oil pan lubricating system, a dry lubricating system and a wet lubricating system can be switched according to the flight attitude angle of an aircraft, an electric signal indicating whether an electromagnetic clutch is attracted or not directly comes from an engine oil pressure sensor on an original automobile engine, the dry lubricating system and the wet lubricating system are switched automatically, and no special control system is needed for control.

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

The invention relates to a hydraulic supply system (100), in particular for a drive machine (115) of a motor vehicle, wherein the supply system (100) comprises the following elements: a storage container (125) for a hydraulic medium (110); a supply line (135) for providing the hydraulic medium (110) from the storage container (125) to a cooling or lubricating point (105), the hydraulic medium (110) which emerges from the cooling or lubricating point (105) being collected in a sump (150); and a bilge pump (130) which is designed to deliver the hydraulic medium (110) from the sump (150) into the storage container (125). In the process, the pump capacity of the bilge pump (130) exceeds the volume flow of medium (110) flowing through the supply line (135) so that the bilge pump (130) can deliver a mixture of hydraulic medium (110) and air. The storage container (125) is designed as a pressure vessel, the internal pressure of which can exceed the ambient pressure, and the bilge pump (130) is designed to separate air from the delivered hydraulic medium (110) such that a substantially air-free hydraulic medium (110) is delivered into the storage container (125).

Provided is a dry sump engine which has a simple structure and reliably prevents or suppresses an increase in the internal pressure of an oil tank. The present invention is provided with: an on-off valve (15) that is provided between a fuel tank (3) and a gas receiving section (10) that receives blow-by gas without leaking to the outside; and a controller (19) that controls the on-off valve (15). The controller (19) has: a low-pressure determination unit that determines whether or not the pressure inside the tank (3) is lower than a preset first reference pressure; a determination unit that determines whether a predetermined condition is satisfied except that the pressure inside the tank is lower than the first reference pressure; and an opening control unit that opens the on-off valve (15) when the low-pressure determination unit determines that the pressure inside the tank is lower than the first reference pressure, or when the determination unit determines that the predetermined condition is satisfied.

An electric axle drive 1 for an electric vehicle is described, comprising a transmission unit 3 arranged on a central axle 100 of the electric vehicle; an electric drive unit 2 arranged on one side of the central axle 100, wherein a drive axle 101 of the drive unit 2 is arranged perpendicular to the central axle 100 and parallel to an output axle 102 of the transmission unit 3; and an electronics unit 4 arranged on the other side of the central axle 100, wherein the electronics unit 4 is electrically connected to the drive unit 2 in the axial direction with respect to the drive axle 101.a housing 5 comprising a transmission section 7 for receiving the transmission unit 3, a drive section 6 for receiving the drive unit 2 and an electronics section 8 for receiving the electronics unit 4, and a pump unit 26 configured to pump oil for cooling and / or lubricating the axle drive 1, wherein the transmission section 7 and the drive section 6 have a common dry sump 23 for dry sump lubrication, wherein the oil can be pumped by the pump unit 26 along an oil circuit 27 from the dry sump 23 into an oil reservoir 28 and from the oil reservoir 28 to at least one oil supply point 29a, 29b, 29c.

To effectively prevent lubricating oil from leaking from an outlet for discharging gas even when the oil level is greatly inclined, thereby achieving miniaturization. [Solution] An oil tank 4 of a dry sump lubrication system that stores lubricating oil pumped from an oil pan, delivers the lubricating oil 3 to specified locations requiring lubrication, and discharges gas separated from the lubricating oil 3, is equipped with multiple outlets 10a, 10b for discharging gas provided on an upper plate portion 9 that closes the upper end, a valve mechanism 11 that opens and closes the outlets 10a, 10b, and a valve control unit 15 that operates based on acceleration to operate the valve mechanism 11, and the valve control unit 15 is configured to operate the valve mechanism 11 to close the outlets 10a, 10b located on the side where the oil level 3a of the lubricating oil 3 becomes higher due to acceleration, and to open the outlet located on the side where the oil level 3a becomes lower.

An electric axle drive for an electric vehicle having a transmission unit on a central axis of the electric vehicle, an electric drive unit on one side of the central axis, a drive unit drive axis is perpendicular to the central axis and parallel to a transmission unit output axis, an electronics unit on the other side of the central axis axially connected to the drive unit along the direction of the drive axis, a housing with a transmission section for the transmission unit, drive section for the drive unit, and electronics section for the electronics unit, and a pump unit that conveys oil for cooling and / or lubricating the axle drive, wherein the transmission and drive sections use the same dry sump for lubrication, wherein the pump unit conveys oil along an oil circuit from the dry sump to a reservoir and then to a lubrication point.

A dry sump engine having a simple structure to certainly prevent a pressure rise in an oil tank. In the dry sump engine, a solenoid valve is arranged between the oil tank and a gas receiving section. A controller comprises: a low-pressure determiner that determines whether a pressure in the oil tank is lower than a first reference pressure level; a condition determiner that determines a satisfaction of a predetermined condition; and an open controller that opens the solenoid valve when the internal pressure of the oil tank is lower than the first reference pressure level, or when the predetermined condition is satisfied.

The embodiment of the invention provides an engine lubricating oil way and an engine, and relates to the technical field of engines. The engine lubricating oil way comprises a box body, a dry type oil pan, a buffering oil cavity, a bottom oil cavity and a pumping mechanism, the box body is provided with a wet area and a dry area, the dry type oil pan is located on one side of the box body, the buffering oil cavity is formed in the box body and located below the dry type oil pan, the buffering oil cavity and the dry type oil pan jointly form the wet area, and the bottom oil cavity is located below the bottom oil cavity. The bottom oil cavity is formed in the bottom of the dry area, the pumping mechanism comprises a main oil pump, a suction pump, a lubricating oil channel and an oil return channel, the main oil pump conveys the oil pump in the buffering oil cavity to the dry area through the lubricating oil channel, and the suction pump conveys the oil pump in the bottom oil cavity into the oil collecting cavity through the oil return channel. The engine provided by the invention comprises the engine lubricating oil way. The engine provided by the invention has the advantages of small ground clearance, compact structure and light weight.

To provide a dry-sump engine that can suppress excessive load. [Solution] The engine 10 includes a scavenging pump 17, a hydraulic pressure sensor 24, and a control device 23. The scavenging pump 17 rotates in conjunction with the crankshaft 14. The amount of oil discharged per revolution by the scavenging pump 17 is adjustable. The hydraulic pressure sensor 24 measures the hydraulic pressure of the oil transferred from the scavenging pump 17 to the oil tank 21. The control device 23 controls the amount of oil discharged per revolution by the scavenging pump 17. The control device 23 starts a process to reduce the amount of oil discharged per revolution by the scavenging pump 17 when the output value of the hydraulic pressure sensor 24 exceeds a predetermined value.

A hydraulic supply system (100), in particular for a drive machine (115) of a motor vehicle, comprises a storage container (125) for a hydraulic medium (110); a supply line (135) for providing the hydraulic medium (110) from the storage container (125) to a cooling or lubricating point (105), the hydraulic medium (110) which emerges from the cooling or lubricating point (105) being collected in a sump (150); a bilge pump (130) which is designed to deliver the hydraulic medium (110) from the sump (150) into the storage container (125); and an electric motor (145) for driving the bilge pump (130). Furthermore, a compressed air motor (140) is provided for driving the bilge pump (130), the compressed air motor (140) being supplied with air from the storage container (125). A pressure pump (205) for providing a volume flow of the medium (110) to a parking lock (215) is coupled to the bilge pump (130) by means of an overrunning clutch (210).

The application relates to the technical field of aero-engines and discloses a lubricating labyrinth device for an aero-piston engine, which comprises a dry oil sump, an oil inlet pipe, an oil tank, and an oil filtering device; the lower part of the side end of the dry oil sump is horizontally connected to the oil tank through the oil inlet pipe; the oil tank is connected to the lower end surface of the dry oil sump through the oil filtering device; the oil filtering device comprises a first oil return pipe, an oil filter, and a second oil return pipe; one end of the first oil return pipe is connected to the lower end surface of the oil tank, the other end of the first oil return pipe is detachably connected to one end of the oil filter, one end of the second oil return pipe is detachably connected to one end of the oil filter, and the other end of the oil filter is connected to the lower end surface of the dry oil sump; the application is convenient for assisting in filtering and removing impurities from the circulating lubricating oil.

A hydraulic supply system (100), in particular for a drive machine (115) of a motor vehicle, comprises a storage container (125) for a hydraulic medium (110); a supply line (135) for providing the hydraulic medium (110) from the storage container (125) to a cooling or lubricating point (105), the hydraulic medium (110) which emerges from the cooling or lubricating point (105) being collected in a sump (150); and a bilge pump (130) which is designed to deliver the hydraulic medium (110) from the sump (150) into the storage container (125). The pump capacity of the bilge pump (130) exceeds a volume flow of medium (110) flowing through the supply line (135) such that the bilge pump (130) can deliver a mixture of hydraulic medium (110) and air. The storage container (125) is in the form of a pressure container, the internal pressure of which can exceed the ambient pressure; and a compressed air motor (140) for driving the bilge pump (130) is provided, the compressed air motor (140) being supplied with air from the storage container (125).

The invention relates to an abnormality diagnosis device for an internal combustion engine. The abnormality diagnosis device diagnoses the presence or absence of abnormality in the internal combustion engine. An internal combustion engine has a dry sump type lubrication system that circulates lubricating oil between the system and an oil tank external to the internal combustion engine. The internal combustion engine causes blow-by gas in the oil tank to flow back to an intake passage. The abnormality diagnosis device is provided with a pressure sensor that detects in-tank pressure, which is the pressure inside the oil tank. The abnormality diagnosis device is configured to perform a diagnosis process for diagnosing the presence or absence of an abnormality in the blow-by gas recirculation path on the basis of whether or not the tank pressure during low-load operation of the internal combustion engine exceeds a threshold value.

An extremely compact dry-sump reciprocating compressor comprising an underlying external reservoir in which lubricant is collected by gravity and a positive displacement pump that draws lubricant from said reservoir to feed it into a distribution circuit.