56 results about "Crankcase ventilation system" patented technology

Described herein are engine systems, closed crankcase ventilation systems, and hot filter assemblies that are configured to filter out contaminants from the closed crankcase ventilation system prior to being returned to an air intake of the engine system. In some examples, a closed crankcase ventilation system can include an engine comprising a crankcase, an oil separator coupled to the crankcase, and a hot filter assembly coupled to the oil separator and mounted to an exhaust manifold of the engine or a turbine housing of a turbocharger. The hot filter assembly comprises a housing defining a cavity, a gas inlet fluidly coupled between the oil separator and the cavity, a gas outlet fluidly coupled between the cavity and an air intake of the engine, and at least one baffle extending across the cavity and defining a first and second gas pathways on opposite sides of the baffle.

This disclosure provides a "system and method for diagnosing intake oxygen sensors." A method and system are provided for diagnosing whether one or more intake oxygen sensors located in the intake port of an engine of a vehicle are functioning as expected. In one example, a method includes: injecting fuel into one or more cylinders of the engine without combustion; directing unburned hydrocarbons from the one or more cylinders to the intake port via a crankcase ventilation system; and indicating whether the one or more intake oxygen sensors are functioning as expected based on their responses. In this way, the one or more intake oxygen sensors can be diagnosed periodically, which can improve engine operation and reduce engine degradation, particularly for hybrid electric vehicles with limited engine operating time.

The invention discloses a crankcase ventilation system, a control method and a vehicle, relates to the technical field of engines, and can reduce engine oil emulsification and improve engine reliability. The crankcase ventilation system comprises a crankcase, the crankcase comprises a crankshaft cavity and an oil storage cavity, and the crankshaft cavity is communicated between an engine air cylinder and the oil storage cavity; the air inlet channel is provided with an air inlet manifold, and the air outlet end of the air inlet manifold communicates with an air inlet valve of the engine. The air inlet end of the first exhaust channel is communicated with the crankshaft cavity, the air outlet end of the first exhaust channel comprises a first sub-end and a second sub-end, and the first sub-end is communicated with the first air inlet end of the air inlet manifold; the air inlet end of the second exhaust channel is communicated with the second sub-end, the air outlet end of the second exhaust channel is communicated with the second air inlet end of the air inlet manifold, the first exhaust channel is provided with a first one-way valve, and the second exhaust channel is provided with a second one-way valve.

A rotating crankcase ventilation system comprises a housing comprising an inlet and an outlet, a motor comprising a stator and a rotor, and a shaft. A first end of the shaft is coupled to the rotor and configured to rotate in response to rotation of the rotor. A filter element is coupled to the shaft. A sensor is configured to measure at least one operating parameter of the rotating crankcase ventilation system. A controller is operatively coupled to the sensor and the motor, the controller configured to receive the at least one operating parameter and selectively adjust operation of the motor to adjust rotation of the rotor, and thereby, the filter element based on the at least one operating parameter.

The invention discloses a vehicle control method, device and equipment and a medium, and the method comprises the steps: responding to a power-on instruction of a hybrid vehicle, and obtaining the actual environment temperature of the environment where the hybrid vehicle is located; under the condition that the actual environment temperature is smaller than the preset environment temperature, whether the accumulative running duration of the hybrid vehicle and the accumulative running duration of an engine of the hybrid vehicle meet a first preset condition or not is judged, and / or whether the accumulative stop duration of the engine meets a second preset condition or not is judged; and under the condition that the first preset condition and / or the second preset condition are / is met and the actual vehicle speed of the hybrid vehicle is larger than 0, the engine is controlled to operate. Volatilization of water vapor and gasoline vapor in engine oil is accelerated, the water vapor and the gasoline vapor are introduced into the engine through the crankcase ventilation system to participate in combustion and discharged out of the engine, finally moisture and gasoline in the engine oil are reduced, the performance deterioration condition of the engine oil caused by chemical reaction of the moisture and the gasoline is relieved, and the service life of the engine oil is prolonged.

The utility model discloses a crankcase ventilation system, an engine and a vehicle, the crankcase ventilation system comprises an air inlet pipeline and a first exhaust pipeline, the air inlet pipeline comprises a turbocharger, a throttle valve and an air inlet manifold which are sequentially connected through pipelines, and the first exhaust pipeline comprises an oil-gas separator and a Venturi tube; a contraction section of the venturi tube is communicated with the air inlet end of the throttle valve, a diffusion section of the venturi tube is communicated with the air inlet end of the turbocharger, a throat portion of the venturi tube is communicated with the oil-gas separator, and a first valve is further arranged between the contraction section of the venturi tube and the air inlet end of the throttle valve. The first valve is used for collecting the opening degree of the throttle valve, the first valve judges the working condition of the engine by collecting the opening degree information of the throttle valve, whether gas can circulate in the venturi tube or not is controlled, and the reliability and stability of rapid exhaust of the ventilation system of the crankcase are improved.

The invention relates to a separator (10) for separating a liquid from a gas stream, in particular for separating oil from blow-by gas in a crankcase ventilation system (200), having at least one nozzle carrier element (102) with at least one nozzle assembly (104) with at least one nozzle (106, 108), and having an impingement element (110) arranged at least partially downstream with respect to the nozzle assembly (104), characterized in that a permanent cover device (120, 122, 124, 126) is provided for one or more nozzles (108) of the nozzle assembly (104), which cover device reduces the throughflow of the gas stream through the one or more nozzles (108) by at least 50% compared to a nozzle (106) without the cover device (120, 122, 124, 126). Furthermore, the invention relates to a fitting kit for a separator (10).

The invention provides a plug-in hybrid crankcase ventilation system monitoring method and system, and the method comprises the steps: obtaining operation basic data, and judging whether a crankcase forced ventilation system fault diagnosis physical condition is satisfied or not according to the operation basic data; in response to the fact that the crankcase forced ventilation system fault diagnosis physical condition is met, whether an oil cut-off condition is triggered or not is judged; in response to the triggering fuel cut condition, the engine management system and the vehicle control unit are coordinated and controlled to enter a fuel cut working condition, and whether a diagnosis enabling condition is met or not is judged; and in response to the fact that the diagnosis enabling condition is met, the actual air inlet pressure of the air inlet manifold is obtained, and whether the crankcase ventilation system breaks down or not is judged according to the actual air inlet pressure and a preset fault threshold value. The method constructs a rigorous diagnosis environment through three-layer condition screening, adapts to the working condition of the insertion-mixing vehicle type, is instant and accurate in diagnosis, and has innovativeness and engineering application value.

The invention discloses an engine and a vehicle, and the engine comprises a cylinder body, a timing cavity is formed in the cylinder body, and the cylinder body is provided with an oil pan; a first oil return cavity is defined by the first cylinder cover and the cylinder body, a second oil return cavity is defined by the second cylinder cover and the cylinder body, the first oil return cavity is provided with a first oil return hole communicated with the oil pan, and the second oil return cavity is provided with a second oil return hole communicated with the oil pan; a first inner drainage wall is formed in the first oil return cavity and obliquely arranged towards the first oil return hole from top to bottom, and a second inner drainage wall is formed in the second oil return cavity and obliquely arranged towards the second oil return hole from top to bottom. The inclination angle of the second inner drainage wall relative to the horizontal direction is larger than that of the first inner drainage wall relative to the horizontal direction. According to the engine, oil accumulation areas can be prevented from being generated on the two cylinder covers, oil stirring of the timing chain is prevented, and the oil gas amount is reduced so that the burden of a crankcase ventilation system can be reduced.

A system includes an engine block in blowby gas receiving communication with one or more cylinders and a crankcase ventilation system configured to draw a fluid out of the engine block and separate the fluid into separated crankcase blowby gas and a liquid. The fluid includes the blowby gas. The crankcase ventilation system includes a first crankcase ventilation conduit configured to route the separated crankcase blowby gas to the one or more cylinders. The system includes a controller configured to perform operations including causing the crankcase ventilation system to draw the fluid out of the engine block at a determined purge air flow rate.

The invention discloses equipment and a method for measuring the engine oil carrying capacity of an engine crankcase ventilation system, relates to the technical field of measuring devices, and aims to improve the measuring precision of the engine oil carrying capacity of an engine. The measuring equipment comprises a collecting device provided with a base and an upper cover which are connected in a sealing manner, and an accommodating cavity is formed between the base and the upper cover; a containing cavity is formed in the base, a filter element framework which is connected with the base and provided with filter holes is arranged in the containing cavity and divides the containing cavity into a first cavity body and a second cavity body, the upper cover is connected with an inlet pipe communicating the first cavity body with the atmosphere and an outlet pipe communicating the second cavity body with the atmosphere, the first cavity body is filled with oil absorption sponge, and the second cavity body is filled with oil absorption sponge. And the inlet pipe is connected with a ventilation outlet of the crankcase. According to the device and method for measuring the engine oil carrying amount of the engine crankcase ventilation system, the engine oil carrying amount of the engine can be accurately measured on the premise that the permeability of the crankcase ventilation system is not affected.

A crankcase ventilation system comprising a housing and a filter element assembly rotatably coupled to the housing. The filter element assembly comprises a first endcap, a second endcap spaced apart from the first endcap, a filter media pack coupled to the first endcap at a first end of the filter media pack and the second endcap at a second end of the filter media pack, and a seal member sealingly engaging the second endcap with the filter media pack along an outer perimeter region of the filter media pack. The filter media pack defines a plurality of axial flow channels extending between the first end and the second end.

The invention relates to a jet pump for oil drainage in a crankcase ventilation system of an internal combustion engine, comprising - an inlet opening 3 for supplying oil from an oil separator of the internal combustion engine, - a propulsion nozzle 5 for supplying a propellant medium, - an outlet opening 6 for returning the oil to a cylinder head chamber 7 of the internal combustion engine, - a check valve 8 arranged at the inlet opening 3 to prevent backflow of oil, - wherein the check valve is designed as a diaphragm valve 8.

The invention belongs to the technical field of engines, and particularly relates to an oil-gas separator and a crankcase ventilation system.The crankcase ventilation system comprises a supercharger, a Venturi tube, the oil-gas separator, an intake manifold and a crankcase. A filtering mechanism and five breather valves are integrated in the oil-gas separator, and the communication state of the Venturi tube, the oil-gas separator, the crankcase and the intake manifold is controlled through the five breather valves, so that the path of mixed gas in the crankcase flowing into the combustion chamber is controlled. Compared with the prior art, the number of external pipelines is reduced, and the integration level of the ventilation system is improved. Particularly, when the ventilation system is in a low-load working condition, air flows into the crankcase after flowing through the ventilation pipeline, the Venturi tube and the oil-gas separator, only one path is provided for the air to flow into the crankcase, and the problem of airflow turbulence can be solved.

The utility model provides a crankcase ventilation system, an engine and a vehicle, and relates to the field of crankcase ventilation systems. An adjusting assembly is arranged at the air outlet end of the crankcase and specifically comprises a vacuum pump and a pressure sensor arranged in the crankcase, and electromagnetic bypass valves in communication connection or electric connection with the pressure sensor are arranged at the two ends of the vacuum pump in parallel. Thus, the pressure value in the crankcase can be monitored in real time through the pressure sensor, when the measured pressure value does not conform to the preset pressure range, the opening degree of the electromagnetic bypass valve can be correspondingly adjusted, and the working state of the adjusting assembly can be correspondingly changed; therefore, the pressure of the crankcase can be correspondingly adjusted to rise or fall to a preset range through the adjusting assembly. In this way, the pressure value in the crankcase can be adjusted in real time without a complex structure, and it is ensured that the crankcase can maintain the stable negative pressure state under all working conditions.

The invention relates to the technical field of valve bodies, and discloses a switching valve and a crankcase ventilation system. The switching valve comprises a shell, the shell internally comprises a first cavity, a second cavity and a first communication opening, and the first cavity communicates with the second cavity through the first communication opening; a first interface, a second interface and a third interface, the first interface and the second interface are communicated with the first chamber, and the third interface is communicated with the second chamber; the valve body assembly is located in the first cavity and / or the second cavity and can move in the first direction; the reset elastic piece is used for elastically connecting the valve body assembly with the shell; the valve body assembly is elastically connected with the shell through the thermo-sensitive elastic piece, and the acting force of the thermo-sensitive elastic piece on the valve body assembly changes along with the temperature of the thermo-sensitive elastic piece; and the heating piece is mounted on the shell and is in heat conduction connection with the thermosensitive elastic piece. According to the switching valve provided by the embodiment of the invention, the switching valve can be connected with a plurality of ventilation pipes, and the connection relationship between the ventilation pipes can be simply, conveniently and correctly switched.

To suppress generation of emulsion in a one-way valve provided in a ventilation system of a crankcase.SOLUTION: A ventilation system for an engine includes: an air introduction passage communicating an intake passage and a crankcase; a one-way valve 60 for limiting a gas flow from the crankcase toward the intake passage through the air introduction passage; and a valve housing 50 fixed to an oil pan 14 constituting an outer wall of the crankcase. The one-way valve 60 is mounted to the crankcase while sandwiched between the oil pan 14 and the valve housing 50.SELECTED DRAWING: Figure 3

This application relates to the field of valve body technology and discloses a switching valve and a crankcase ventilation system. The switching valve includes: a housing containing a first chamber, a second chamber, and a communication port; a first interface, a second interface, and a third interface, wherein the first and second interfaces communicate with the first chamber, and the third interface communicates with the second chamber; a valve body assembly; a thermal spring; and a reset elastic assembly. The switching valve has a first state and a second state. The thermal spring is configured to heat up and deform when energized, with its second end moving away from its first end and driving the valve body assembly to move, causing the switching valve to switch from the first state to the second state. The thermal spring is configured to stop heating and recover its deformation after de-energization, and the reset elastic assembly causes the switching valve to switch from the second state to the first state. According to the embodiments of this application, the switching valve can connect to multiple ventilation pipes and can easily and correctly switch the connection relationship between the ventilation pipes.

The utility model discloses a tool for testing the oil pumping amount of a crankcase ventilation system of an internal combustion engine. An upper assembly and a lower assembly are in a hollow straight cylinder shape. The top of the upper assembly is sealed, the bottom of the upper assembly is open, an air outlet pipe is arranged on the outer side face of the upper assembly and close to the top of the upper assembly, and a first flange is arranged at the bottom of the upper assembly around the outer side face of the upper assembly. The bottom of the lower assembly is sealed, the top of the lower assembly is open, an air inlet pipe is arranged on the upper middle portion of the outer side face of the lower assembly, a second flange corresponding to the first flange is arranged around the outer side face of the lower assembly and on the top of the lower assembly, and a plurality of first connecting pieces are arranged on the first flange and / or the second flange so that the upper assembly and the lower assembly can be fixed together. A circle of groove is formed in the top of the second flange and surrounds the inner side wall of the lower assembly, and an O-shaped ring is arranged in the groove to seal the upper assembly and the lower assembly; the filter element is in a sheet shape, is arranged on the second flange and completely covers the hollow part of the lower assembly. The tool is wide in test range and accurate in test result.

This application discloses an engine crankcase ventilation system and a vehicle, relating to the field of engine technology. The engine crankcase ventilation system includes an intake pipe, a sealed chamber, a first gas passage, and a second gas passage. The intake pipe is connected to the engine's combustion chamber. The sealed chamber is disposed on the engine's valve cover and is connected to the intake pipe, and is also disconnectably connected to the engine's crankcase. Both the first and second gas passages are disposed on the engine cylinders, wherein the first gas passage disconnectably connects the combustion chamber and the crankcase, and the second gas passage disconnectably connects the sealed chamber and the crankcase. The engine crankcase ventilation system and vehicle disclosed in this application reduce additional space occupation, while also being low in cost and highly reliable.

The utility model discloses a crankcase ventilation system and a vehicle, the crankcase ventilation system comprises a cylinder head cover, an air filter, an air inlet module, a connecting module and a ventilation pipeline, the connecting module comprises a first joint, a second joint and a sealing piece, the first joint comprises a connecting part and a diagnosis part connected to the peripheral side of the connecting part, and the second joint comprises a second joint and a sealing piece. The diagnosis part is provided with at least one through diagnosis hole, and the sealing piece is clamped between the connecting part and the second connector and blocks the diagnosis hole. The ventilation pipeline and the cylinder head cover are in gas path communication through the connecting module, the first connector is provided with a diagnosis hole, the sealing piece blocks the diagnosis hole in the normal working state, when the connecting position of the first connector and the second connector is disconnected, gas inlet pressure fluctuates, an alarm can be given, OBD diagnosis is completed through the structure of the connecting module, and the diagnosis efficiency is improved. No additional wire harness connection is needed, and the structure of the ventilation system is simplified.

A crankcase ventilation system (1) is provided. The system comprises a housing (10), a disc stack separator (20) arranged within the housing which comprises a chamber (21), and a rotor (22). The rotor comprises an oil separating element (23) arranged within the chamber and spaced from one or more walls of the chamber, a shaft (24) configured to rotatably mount the oil separating element. The disc stack separator further comprises a first gas inlet (41) and a first gas outlet (42). The system further comprises a filter element (30) comprising a second gas inlet (43), a second gas outlet (44), and a filter (31) arranged between the second gas inlet and the second gas outlet. The first gas inlet is configured to be connected to a crankcase blow-by outlet of the ICE, and the first gas outlet is connected to the second gas inlet.

Internal combustion engine (100), comprising: a crankcase (102) having a first plurality of openings and a second plurality of openings, wherein the first plurality of openings are aligned with each other along a length of the crankcase (102) at a first height, and the second plurality of openings are aligned with each other along the length of the crankcase (102) at a second height, an oil pan (132) connected to a bottom section of the crankcase (102); a first oil separation module (200, 300) comprising at least one first inlet housing (202, 302), wherein the at least one first inlet housing (202, 302) is fluidly connected to a first channel (220), and a first oil separation filter (228) is arranged in fluid connection between the channel (220) and the oil pan (132); wherein the at least one first inlet housing (202, 302) can be connected to an opening from the first plurality of openings or from the second plurality of openings, such that a fluid circuit for venting gases present in the crankcase (102) is defined from an inner cavity of the crankcase (102) to the at least one first inlet housing (202, 302), to the first channel (220) and through the first oil separator filter (228).

The invention relates to the technical field of vehicles, and discloses an engine and a control method, device and system thereof, a storage medium and a vehicle, the engine comprises a first heating element and a second heating element, the first heating element is used for heating an air inlet connecting bent pipe of the engine, and the second heating element is used for heating a crankcase ventilation pipe of the engine; the control method of the engine comprises the steps that state information and environment temperature of the engine are obtained; and when it is determined that the engine is in the running state according to the state information and the environment temperature is smaller than or equal to the preset temperature, the first heating element and the second heating element are controlled to work. Therefore, the problem that a crankcase ventilation system is blocked by ice due to water vapor condensation in an extremely cold environment can be effectively solved, smoothness of the ventilation system is guaranteed, meanwhile, the hidden danger that a turbocharger is damaged by ice particles is eliminated, and the working reliability and safety of an engine under the low-temperature condition are remarkably improved.

The invention relates to a device (100) for drying blow-by gases from a crankcase ventilation system (30) of an internal combustion engine (200), comprising a water separation device (10), which is preferably arranged downstream of the flow direction of the gases from the crankcase ventilation system (30) of the internal combustion engine (200) and which is designed to separate a condensate from the blow-by gases, a heating device (12) which is designed to heat the separated condensate, and a water return device (16) which is fluidically connected to the water separation device (10) and is designed to return the separated condensate to the internal combustion engine (200). The water separation device (10) can be cooled with ambient air and heated with the heating device (12). Dried gases from the water separation device (10) can be supplied to an intake air supply (40) of the internal combustion engine (200). The invention further relates to an internal combustion engine (200) with a crankcase ventilation device (30) and a device (100) for drying blow-by gases from the crankcase ventilation device (30).

A crankcase ventilation system (100) for an internal combustion engine (1000), such as a hydrogen internal combustion engine, is provided. The crankcase ventilation system (100) comprises: an air intake duct (110) for supplying air to the crankcase ventilation system (100); an exhaust gas turbocharger (120) connected to the intake duct (110), an inlet of which is adapted to be connected to an exhaust port (1004) of the internal combustion engine (1000), the exhaust gas turbocharger (120) being adapted to deliver the supplied air into a supply line (140, 150) of the internal combustion engine (1000); at least one ventilation line (160) adapted to connect the exhaust gas turbocharger (120) to the internal combustion engine (1000); and an electrically controlled disc separator (130) adapted to connect the internal combustion engine (1000) to the intake passage (110) and the exhaust gas turbocharger (120).

Method for a turbocharged power engine (10), comprising: Drawing vacuum from a vacuum source (179) positioned in an inlet (108) of the engine (10) downstream of a pre-compressor throttle (159) and upstream of an inlet throttle (114); Applying the drawn vacuum to a discharge outlet (161) of a unidirectional crankcase ventilation system (40), wherein an inlet of the crankcase ventilation system (40) is coupled to the inlet (108) of the engine (10) upstream of the pre-compressor throttle (159).

The utility model discloses a combined crankcase ventilation system of a diesel engine, which belongs to the technical field of engines and comprises a flow guide box and a respirator arranged on a gas outlet arranged at the top of the flow guide box, a gas inlet of the flow guide box is connected with a waste gas outlet of a crankcase, and the bottom of the flow guide box is arranged to be an inclined plane. An oil return opening is formed in the lowest point of the bottom. According to the design method of the combined crankcase ventilation system of the diesel engine, on the basis of a prototype ventilation system, the overall performance of the ventilation system is improved through the combined design, and the combined crankcase ventilation system can meet the matching requirements of performance improvement or series development of various diesel engines.

Apparatuses, systems and methods are shown and described including a system to reduce emissions that includes a reciprocating gas compressor having a plurality of compression spaces and a plurality of throw spaces and an internal combustion engine. The internal combustion engine can have a closed crankcase ventilation system. The plurality of throw spaces are in fluid communication with the closed crankcase ventilation system.

The present application relates to a crankcase ventilation system comprising: a crankcase; the air pipeline is used for conveying air needed by combustion of the engine, an air supplementing branch is arranged on the air pipeline, and the air outlet end of the air supplementing branch is connected with an air inlet of the crankcase; the air exhaust pipeline and the air suction pipeline are both used for exhausting air in the crankcase, air inlets of the air exhaust pipeline and the air suction pipeline are connected with different air outlets of the crankcase correspondingly, and an air exhaust opening of the air exhaust pipeline communicates with the air pipeline. According to the crankcase ventilation system and the control method, concentration pre-detection is conducted on the engine compartment and the crankcase before starting, and starting with hidden dangers is prevented; real-time monitoring and intelligent response are realized during operation; after shutdown, if the concentration and the pressure exceed the standard, power failure is delayed, ventilation continues to be conducted till safety is achieved, the throughout-and-throughout safety design can effectively guarantee that the hydrogen concentration and the pressure of the crankcase are both within the safety range under any operation working condition, and the safety of the vehicle is greatly improved.