Class / Patent application number | Description | Number of patent applications / Date published |
123574000 | Specific control valve (e.g., PCV valve) | 54 |
20080257321 | Valve and Cylinder Head Cover for Crankcase Ventilation of an Internal Combustion Engine - A valve for crankcase ventilation of an internal combustion engine comprises a fresh-air side for connection with an intake section of the internal combustion engine, an engine side for connection with the crankcase and a valve insert movable as a whole for changing the flow resistance through the valve. Said valve inset is held inside said valve without pre-load. Said valve insert is designed to be freely displaced to a deventilation limit-stop position under negative pressure on the fresh-air side relative to the engine side, and to be freely displaced to a ventilation limit-stop position under excess pressure on the fresh-air side relative to the engine side. The valve insert id designed to open a deventilation cross-section in the deventilation limit-stop position and to open a deventilation cross-section that is different from the ventilation cross-section in the ventilation limit-stop position. | 10-23-2008 |
20090044791 | POSITIVE CRANKCASE VENTILATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A positive crankcase ventilation (PCV) system is provided for an internal combustion engine. The PCV system includes a centrifugal separator disposed within a shaft member, for example a balance shaft, of the internal combustion engine. The centrifugal separator is operable to impart rotational motion on the gases flowing through the shaft member such that the centrifugal forces urge the separation of oil particle entrained within the gases. | 02-19-2009 |
20090090337 | Engine blow-by gas returning apparatus - A blow-by gas returning apparatus is arranged to allow blow-by gas leaking from a combustion chamber of an engine into a crank chamber to flow in an intake passage through a returning passage, and to regulate a flow rate of the blow-by gas by a PCV valve placed in the returning passage. A supercharger is placed in the intake passage. The PCV valve is adapted to change a position of the valve element by electromagnetic force to change a passage opening area. A check valve is placed integral with the PCV valve in the returning passage between the valve element of the PCV valve and the intake passage. The check valve is arranged to inhibit back-flow of the gas from the intake passage. | 04-09-2009 |
20090126709 | CRANKCASE VAPOR PURIFICATION DEVICE - A vapor purifier for oil recovery from and cleansing of deleterious matter carried by oil vapors in a crankcase of an internal combustion-type engine generally includes a coil member that can separate the oil from the vapors by passing the vapors over and/or through the coil member. As the vapors impinge upon the surface(s) of the coil member, oil in the blow-by vapors condenses thereon. The vapor purifier can include a flow equalization member to maintain a normal engine intake manifold pressure for driving modes of the engine. As a result, the vapor purifier of the present invention can maintain the air to fuel stoichiometric ratio of the engine system. Additional components, such as filters and/or disks can also be included in the vapor purifier to promote oil recovery and cleansing of deleterious matter from the vapors, which act as a host for the deleterious matter. | 05-21-2009 |
20090159056 | PCV System for V-Type Engine - The invention provides a PCV system for a V-type engine, where an oilmist extraction port, through which oilmist to be supplied to an oil separator is taken out from the engine, is formed at a position corresponding to the lateral center of the top portion of a chain case of the engine, and the oil separator has an oil discharge hole, and is connected to a PCV valve. A rib, which extends from the floor wall of the oil separator toward a wall opposite to the floor wall, is arranged inside the oil separator. The rib forms a dead-end portion that is open in the direction opposite to the direction toward the PCV valve side, and forms a dead-end in the direction toward the PCV valve side. An oil return passage connected to the oil discharge hole is provided with a container portion. | 06-25-2009 |
20090205620 | Pressure Control Valve, Crankcase Ventilation Device, and Method for the Operation Thereof - A pressure control valve is provided for a crankcase ventilator of an internal combustion engine. The pressure control valve includes a valve housing, a valve diaphragm, and a valve spring. A separate shutoff valve is provided for shutoff of the pressure control valve. A crankcase ventilation device includes such a pressure control valve. A method is provided for operating the crankcase ventilation having the pressure control valve. | 08-20-2009 |
20090235907 | ELECTRONICALLY CONTROLLED BLOW-BY GAS RETURNING APPARATUS FOR INTERNAL COMBUSTION ENGINE - An electronically controlled blow-by gas returning apparatus for an internal combustion engine which corrects a fuel injection amount is disclosed. This blow-by gas returning apparatus is provided with an electronically controlled ventilation valve and a control unit. The ventilation valve regulates the flow rate of blow-by gas. The control unit controls the ventilation valve. The control unit controls the opening degree of the ventilation valve such that the actual value of the opening degree of the ventilation valve is maintained at a demand value of the opening degree of the ventilation valve. The control unit corrects the demand value based on the degree of enrichment of the actual air-fuel ratio in relation to a target air-fuel ratio and an intake air amount which is the amount of air fed into a combustion chamber of the internal combustion engine. | 09-24-2009 |
20090301449 | BREATHER DEVICE FOR ENGINE - In a breather device for engine, in which an inlet of a breather chamber communicates with a crank chamber through a reed valve, the reed valve being formed of: a fixed stopper plate arranged so as to be opposed to a valve seat formed on an end face of the inlet facing the breather chamber; and an elastic valve plate fixed at one end thereof to the stopper plate and capable of bending elastically to change its position from a closed position in which the elastic valve plate closes the inlet by seating on the valve seat to an opening limit position in which the elastic valve plate opens the inlet and abuts against the stopper plate, the stopper plate is provided at a center part thereof with an oil discharge hole through which oil present between the elastic valve plate and the stopper plate is pushed out when the elastic valve plate is pushed toward the opening limit position in which the elastic valve plate abuts against the stopper plate by pressure in the crank chamber. Accordingly, it is possible to prevent the elastic valve plate from sticking to the stopper plate even if oil mist adheres to the elastic valve plate or the stopper plate of the reed valve. | 12-10-2009 |
20100006076 | Breather System for a Four Stroke Engine - A breather system for an engine used to vent combustion, or blow-by, gases. The breather system has an axial breather passage disposed within a camshaft of the engine. A radial opening is in fluid communication with the axial breather passage. A valve is positioned within the radial opening in order to prevent oil from entering the axial breather passage when the engine is not in operation. | 01-14-2010 |
20100012103 | SYSTEM AND METHOD FOR STORING CRANKCASE GASES TO IMPROVE ENGINE AIR-FUEL CONTROL - A system and method for improving processing of gases contained within the crankcase of an internal combustion engine is presented. The system is especially suited for single boiling point fuels because it allows the storage of such fuels until the fuel can be opportunistically combusted. | 01-21-2010 |
20100065030 | Wound Hydrocarbon Trap - An air induction system hydrocarbon trap is provided. In one example, the hydrocarbon trap includes an adsorber roll including an adsorbing material and a corrugate support, where the corrugate support is rolled with the adsorbing material to form a wound adsorber roll. A trap housing is further provided to retain the adsorber roll. A housing cap may be coupled to the housing. | 03-18-2010 |
20100139634 | POSITIVE CRANKCASE VENTILATION VALVE ASSEMBLY WITH A VACUUM PULSATION DAMPENER - A PCV valve assembly includes a housing that is defined by a first housing section and a second housing section. A poppet valve is supported within the housing. The first housing section includes a threaded end that defines a fluid inlet, and the second housing section includes a cylindrical outlet stem and an end flange that defines a restricted integral orifice as a fluid outlet. The diameter of the orifice is smaller than the diameter of the cylindrical outlet stem. A fluid chamber between the end flange and the poppet valve averages out variations in the fluid flow through the PCV valve assembly, thereby reducing vacuum pulsation. | 06-10-2010 |
20100242931 | AIR/OIL SEPARATING PCV APPARATUS - An improved air/oil separating PCV apparatus is disclosed that provides for integration of an air duct, cross-over duct, one way drain valve, PCV valve, cyclonic oil mist separator assembly, cyclone bypass valve, oil reservoir and oil fill cap into a single injection molded apparatus. The improved air/oil separating PCV apparatus is configured to permit it to be tooled in a vertical direction for injection molding. | 09-30-2010 |
20110023852 | ABNORMALITY DIAGNOSIS DEVICE OF INTERNAL COMBUSTION ENGINE - An engine has a PCV passage connected to an intake system for recirculating a blow-by gas to the intake system and an air flow meter provided upstream of a connection between the PCV passage and the intake system in the intake system for sensing an intake air flow rate. An electronic control unit (ECU) performing various types of control of the engine diagnoses a clogging abnormality of the PCV passage based on pulsation width of the intake air flow rate sensed with the air flow meter. A thermal type sensor having a heating section and a temperature sensing section provided on a semiconductor substrate is used as the air flow meter. | 02-03-2011 |
20110073082 | BLOW-BY GAS REFLUXING DEVICE - A blow-by gas refluxing device is provided for an engine system including an engine and an intake air passage communicating with the engine for supplying intake air into the engine. The blow-by gas refluxing device includes a plurality of blow-by gas refluxing passages each having an inlet communicating with the engine and an outlet communicating with the intake air passage. The outlets of the blow-by gas passages communicate with the intake air passage at different positions along the length of the intake air passage and each of the blow-by gas passages has a backflow preventing device disposed therein, so that blow-by gas produced in the engine can flow into the intake air passage via at least one of the blow-by gas refluxing passages throughout the entire operational range of the engine. | 03-31-2011 |
20110073083 | BLOW-BY GAS RECIRCULATING APPARATUS FOR AN ENGINE - It is an object of the invention to provide a blow-by gas recirculating apparatus for an engine in which the ventilation efficiency of a crankcase can be enhanced. | 03-31-2011 |
20110197864 | Internal combustion engine and method for monitoring a tank ventilation system and a crankcase ventilation system - The invention relates to an internal combustion engine having an intake air line, which contains both a compressor of an exhaust gas turbocharger and a throttle flap, as well as having a tank ventilation system and a crankcase ventilation system, both of which are connected to the intake air line at two connecting points upstream of the compressor and behind the throttle flap. In order to make it possible to monitor the inlet points of the ventilation gases into the intake air line in a relatively simple way, the invention proposes that a non-return valve be mounted directly at each of the connecting points. | 08-18-2011 |
20110277733 | ENGINE INCLUDING POSITIVE CRANKCASE VENTILATION - An engine assembly may include an engine structure, an intake assembly and a cylinder head cover assembly. The engine structure may define a combustion chamber and a crankcase in communication with a fresh air supply. The intake assembly may be in communication with the combustion chamber. The cylinder head cover assembly may be fixed to the engine structure and may include a cover member defining a positive crankcase ventilation chamber and a separator coupled to the cover member. The separator may define an inlet providing communication between the crankcase and the positive crankcase ventilation chamber. The cylinder head cover assembly may include a first outlet flow path in communication with the intake assembly and a second outlet flow path in communication with the intake assembly. A first valve may be located in the first outlet flow path. | 11-17-2011 |
20110283979 | System and Method for Returning Oil Separated from Engine Crankcase Gases - A system for processing PCV gases is disclosed. In one example, the system includes an oil passage solely linking an oil separator to an engine crankcase. The system can provide an oil column that provides for continuous oil return from the oil separator to the engine crankcase even during conditions of higher levels of engine vacuum. | 11-24-2011 |
20110308504 | VENTILATION SYSTEM AND METHOD FOR SUPERCHARGE ENGINE - In ventilation system and method for a supercharge engine, in a middle load driving region of the engine in which the boost pressure of position of an intake air passage located at the downstream side with respect to a throttle valve is positive and is lower than a set pressure (P | 12-22-2011 |
20120138030 | APPARATUS FOR ANTI-FREEZING PCV - An apparatus for anti-freezing a PCV prevents condensed water from blocking an outlet of a PCV chamber by leading the condensed water condensed at an inner all of the PCV chamber to a condensed water storing portion. The apparatus may include a PCV chamber forming a space therein, a blow-by gas expanding in the space, an inlet connected to the PCV chamber and adapted to supply the blow-by gas to the PCV chamber, an outlet formed lower than the inlet with respect to a horizontal axis, slanted to the horizontal axis by a predetermined angle, and connected to the PCV chamber so as to exhaust the blow-by gas to a rear end of a throttle body, protruding portions formed at a front surface and a rear surface of an inner wall of the PCV chamber along an extending direction of the outlet, and guiding a condensed water at the inner wall of the PCV chamber, and a partition having plate shape and mounted along a length direction of the protruding portions at a part of the protruding portions. | 06-07-2012 |
20120138031 | PCV VALVE - A PCV valve includes a cover of which an inlet is formed thereto, a body connected to the cover to form a hydraulic path therein and the body of which an outlet is formed thereto, a valve body including a valve head and disposed within the hydraulic path for the valve head to selectively block the inlet and an elastic portion which contacts the valve head and elastically supports the valve body within the hydraulic path, wherein a valve head gas groove is formed to a surface of the valve head that contacts the elastic portion. | 06-07-2012 |
20120255529 | REGULATOR - A regulator ( | 10-11-2012 |
20130074815 | BLOW-BY GAS TREATMENT DEVICE FOR ENGINE - A blow-by gas treatment device for an engine configured such that the upper end of a portion of a passage for introducing fresh air and discharging blow-by gas vertically faces an opening section, the portion being located further toward the crank chamber side than a first breather chamber, and also such that a communication section communicating with the space within a variable valve chamber is provided between the upper end and the opening section. The area of the communication of the communication section is set so that the amount of increase in the pressure within the variable valve chamber relative to the pressure within the first breather chamber does not exceed a predetermined value when blow-by gas flows to the air intake passage not only from a passage dedicated for discharging blow-by gas but also from the passage for introducing fresh air and discharging blow-by gas. | 03-28-2013 |
20130087128 | INTEGRATED POSITIVE CRANKCASE VENTILATION VENT - Systems and methods for ventilating engine crankcase gases are described. In one example, crankcase gases flow from a first cylinder bank to a second cylinder bank via tubes placed between exhaust gas manifold runners. The systems and method may improve crankcase gas ventilation. | 04-11-2013 |
20130118460 | Plate Assembly for Positive Crankcase Ventilation System - A positive crankcase ventilation (PCV) plate system is disclosed that provides for expanded operation on a vehicle engine. The PCV system, in an embodiment, comprises a PCV plate, cap, and adapter plug. The PCV plate may have three orifices that may align with and securely mount over ports on an engine valve cover. One orifice on the PCV plate may be fitted with the adapter plug to allow attachment of a block breather hose or other hose, while two other orifices may allow attachment of the cap or catch cans. The cap may be installed over two orifices on the PCV plate. Crankcase vapors, for example, may then enter one orifice, flow through the cap and out through a second orifice, allowing the vacuum from a turbocharger, for example, to draw crankcase vapors into the intake manifold. | 05-16-2013 |
20130125866 | SYSTEM AND METHOD FOR STORING CRANKCASE GASES TO IMPROVE ENGINE AIR-FUEL CONTROL - A system and method for improving processing of gases contained within the crankcase of an internal combustion engine is presented. The system is especially suited for single boiling point fuels because it allows the storage of such fuels until the fuel can be opportunistically combusted. | 05-23-2013 |
20130213369 | EJECTOR - An ejector includes: a decompression chamber in an outer pipe on an air entrance side; a throat in the outer pipe on an air exit side; a nozzle in the outer pipe on the air entrance side, the nozzle having a leading end portion placed in a decompression chamber to inject air; and a suction port in the decompression chamber to suck blow-by gas into the decompression chamber. The air injected from the nozzle generates negative pressure in the decompression chamber to suck in blow-by gas through the suction port, and the sucked gas is discharged together with air through a throat. The valve in the nozzle includes a valve seat, a valve element, and a spring to press the valve element in a direction to separate from the valve seat. The valve element is formed with a bottom-closed cavity opening toward an upstream side of an air flow. | 08-22-2013 |
20130213370 | PCV VALVE INSTALLATION STRUCTURE - A positive crankcase ventilation (PCV) valve installation structure for installing a PCV valve of an engine on an engine body includes: a blow-by gas recirculation system that includes a ventilation hose that connects the engine body to an intake device introducing outside air into the engine body and that has a recirculation passage recirculating blow-by gas arising in the engine body to the intake device and an oil cooler device that exchanges heat between lubricating oil and a medium solution that is lower in temperature than the lubricating oil; and a cover that transfers heat of the oil cooler device to the PCV valve. | 08-22-2013 |
20130291843 | PCV SYSTEM FOR INTERNAL COMBUSTION ENGINE - A PCV system for an internal combustion engine that can suppress occurrence of preignition due to oil inflow into a cylinder is provided. A path switching valve is controlled so that blowby gas flows via a bypass passage, in a preig occurrence region. Thereby, path pressure loss increases, a PCV flow rate is decreased, and blowby gas can be passed through a separator with a high collection efficiency. As a result, an oil takeaway amount can be reduced, and occurrence of preignition due to cylinder oil inflow can be suppressed. | 11-07-2013 |
20130298885 | Check Valve for an Engine Breather Assembly - A check valve for a breather assembly includes a valve seat defining a seat opening, a valve stop coupled to the valve seat, and a valve element disposed between the valve seat and the valve stop and including a first element surface and a second element surface. The valve element may be sufficiently flexible to actuate between a closed position, in which the first element surface engages the valve seat, and an open position, in which the second element surface engages the valve stop. The valve element may further include a passage, such as apertures, extending from the first element surface to the second element surface. | 11-14-2013 |
20140014080 | ASPIRATOR FOR CRANKCASE VENTILATION AND VACUUM GENERATION - Methods and systems are provided for flowing crankcase gases through an aspirator arranged in a PCV line. The aspirator regulates PCV flow, and may also generate vacuum depending on a position of a pintle extendable across a horizontal passage of the aspirator. When regulating PCV flow and not generating vacuum, the aspirator is fully closed and crankcase gases in the horizontal passage are metered through an orifice in the pintle. When generating vacuum, the aspirator is at least partially opened and PCV flow through the horizontal passage generates vacuum at a vacuum port of the aspirator. | 01-16-2014 |
20140034031 | Two Circuit Adjustable PCV Valve - A two circuit manually adjustable PCV valve has threaded control means for adjusting the blow by gas flow in idle (high) and cruise (low) vacuum conditions. A third adjustment means for controlling the crossover flow rate between the channels in certain modes of operation renders the vacuum pressure transition point susceptible to manual control. The three adjustment means create a control system for more efficient vehicle engine operation. | 02-06-2014 |
20140069399 | Turbo PCV Valve - A PCV valve that also monitors the flow of gases produced by use of a turbocharger. A spring biased plunger member is used to restrict and meter the flow of gases through the PCV valve. A nozzle member with a Venturi throat is used to allow back flow caused by use of a turbocharger. The nozzle member can be part of a module including a passageway member that can be closed by the plunger member. | 03-13-2014 |
20140096753 | DIESEL POLLUTION CONTROL SYSTEM - A pollution control system for diesel engines includes a PCV valve and an oil filter positioned together in a canister. The PCV valve has an inlet and an outlet adapted to vent blow-by gas from a diesel combustion engine. A fluid regulator associated with the PCV valve selectively modulates engine vacuum pressure to adjustably increase or decrease a fluid flow rate of blow-by gas venting from the diesel combustion engine. The oil filter cleans particulate matter out of the blow-by gas, and condenses oil to return to the engine. A controller regulates the amount of blow-by gas vented through the system. | 04-10-2014 |
20140096754 | PCV VALVE AND POLLUTION CONTROL SYSTEM - A PCV valve and pollution control system for combustion engines. The PCV valve has an inlet and an outlet adapted to vent blow-by gasses from the crank case of a combustion engine. The inlet of the PCV valve is in fluid communication with a port on an engine oil cap on an engine oil inlet tube. The PCV valve may be integral with the engine oil cap or connected thereto by a hose. The outlet of the PCV valve directs vented blow-by gasses to a fuel/air inlet to the combustion chamber of the engine. The combination of the PCV valve with the engine oil cap facilitates installation of the system on a combustion engine. | 04-10-2014 |
20140130784 | PCV VALVES - A PCV valve may include a housing and a valve member movable in an axial direction within the housing. A plurality of guide portions may be formed on the valve member, so that the plurality of guide portions slidably contact the monitoring portion of the housing as the valve member moves in the axial direction. When a first part of a tapered portion of the valve member opposes to the monitoring portion, a first contact part of each of the guide portions may contact the monitoring portion. When a second part of the tapered portion having a smaller diameter than the first part opposes to the monitoring portion, a second contact part of each of the guide portions may contact the monitoring portion. The second contact part may be smaller than the first part with respect to a width in a circumferential direction or may have a circumferential contact length smaller than that of the first part. | 05-15-2014 |
20140174415 | PCV VALVE APPARATUS - A PCV valve apparatus includes a PCV valve main body and a cover member. The PCV valve main body includes a first connection portion, a second connection portion, and a fastened portion. The first connection portion includes a first end and a second end. The cover member includes an attachment portion and a covering portion. The fastened portion includes a locking portion protruding toward the cover member in a state where the covering portion covers a fastening member. In a covering position where the covering portion covers the fastening member, the locking portion is received in a receiving portion, and the attachment portion is located at the second end. In a non-covering position where the covering portion does not cover the fastening member, the attachment portion is in contact with the locking portion to be locked by the locking portion and is located at the first end. | 06-26-2014 |
20140238365 | ENGINE HAVING PCV SEPARATOR INLET SHIELDED BY HEAD GASKET GEOMETRY - An engine includes an engine block that defines a drain-back passage and a Positive Crankcase Ventilation (PCV) passage. The drain-back passage and the PCV passage are disposed in fluid communication with each other. A cylinder head is attached to the engine block. The cylinder head defines an oil return passage. The oil return passage is disposed in fluid communication with both the drain-back passage and the PCV passage. A head gasket is disposed between the engine block and the cylinder head, and includes a shelf that extends at least partially over the PCV passage to prevent liquids draining through the oil return passage into the drain-back passage, from entering the PCV passage, while allowing gasses flowing through the oil return passage to enter the PCV passage. | 08-28-2014 |
20140352675 | Pressurization Device - The present disclosure relates to an apparatus ( | 12-04-2014 |
20140366856 | CLOSED BREATHER SYSTEM - In a closed breather system which returns blow-by gas | 12-18-2014 |
20150040878 | FAILURE DETECTION DEVICE FOR BLOW-BY GAS RECIRCULATION APPARATUS OF ENGINE - An engine includes a EGR valve to regulate a EGR flow rate. A blow-by gas recirculation passage allows blow-by gas generated in the engine to flow in a surge tank to return to the engine. A PCV valve operates in response to negative pressure to regulate a blow-by gas flow rate in the recirculation passage. During deceleration fuel cutoff of the engine, an ECU holds a throttle valve at a predetermined slight opening degree and controls the EGR valve to be forcibly opened from a valve-closed state to change intake pressure (negative pressure) in the surge tank and determines whether or not the PCV valve is in sticking failure based on changes in intake amount detected by an air flow meter before and after the negative pressure changes. | 02-12-2015 |
20150053188 | BLOW-BY GAS VENTILATION DEVICE - A bypass passage connecting an upstream portion and a downstream portion of a compressor of a turbocharger is provided in an air intake passage of an internal combustion engine. An ejector, which utilizes the intake air flowing in the bypass passage as a drive gas and thereby venting the blow-by gas generated by the internal combustion engine, is installed in the bypass passage. When the internal combustion engine is at a low temperature at which the oil is easily degraded by the blow-by gas, the flow rate of the intake air flowing in the bypass passage, that is, the flow rate of the drive gas of the ejector, is increased. | 02-26-2015 |
20150059719 | SYSTEM AND METHOD FOR REDUCING FRICTION IN ENGINES - A vehicle system comprises an internal combustion engine including a PCV system fluidly coupled to a gaseous fuel source via a flow control valve. The gaseous fuel source may be fluidly coupled to an air inflow line of the PCV system, and the flow control valve may be configured to control a flow of gaseous fuel into the PCV system. | 03-05-2015 |
20150114369 | PCV VALVE MOUNTING STRUCTURES - A mounting structure for mounting a PCV valve includes a mount recess formed in at least one of joint surfaces of a cylinder head and an intake manifold, so that at least a part of the PCV valve can be fitted into the mount recess. | 04-30-2015 |
20150292374 | PCV VALVE MOUNTING STRUCTURE - A PCV valve mounting structure which releases freezing of a PCV valve promptly is provided. A PCV valve mounting structure is provided with a resin cover forming an internal space portion between the resin cover and a cylinder head of an internal combustion engine, a valve mounting through hole formed at the resin cover, a PCV valve including a valve case portion inserted through the valve mounting through hole from outside the resin cover, and a metal fixture threadedly engaged, from inside the resin cover, with the valve case portion inserted through the valve mounting through hole, at least part of the metal fixture being exposed to the internal space portion. | 10-15-2015 |
20150337696 | SYSTEMS AND METHODS FOR PURGE AND PCV CONTROL - Methods and systems are provided for improving purge air-fuel ratio control. Fuel vapors from a canister and the crankcase are selectively purged to a group of cylinders and not to remaining engine cylinders. Exhaust is recirculated from the selected group of cylinders to the engine intake wherefrom the EGR is ingested in the remaining engine cylinders and the selected group of cylinders. | 11-26-2015 |
20150345349 | DIESEL POLLUTION CONTROL SYSTEM - A pollution control system for diesel engines includes a PCV valve and an oil filter positioned together in a canister. An open/closed state of the PCV is regulated by a controller, preferably wirelessly, responsive to sensed blow-by conditions, including pressure, temperature, composition, and/or flow rate. The controller also wirelessly receives measurements from an in-line blow-by gas sensor for regulating the PCV valve. The oil filter cleans particulate matter out of the blow-by gas, and condenses oil to return to the engine. The controller regulates the amount of blow-by gas vented through the system. | 12-03-2015 |
20150354420 | BLOW-BY GAS RECIRCULATION APPARATUS - A blow-by gas recirculation apparatus which can release freezing of a PCV valve in a short period of time is obtained with a simple configuration. The blow-by gas recirculation apparatus is provided with the PCV valve at a case member of a gas space portion to which blow-by gas is sent in a manner that the PCV valve penetrates through the case member and a return path supplying the blow-by the gas, which is from the PCV valve, to an induction system of an engine. A heating portion to which part of oil lubricating the engine is supplied and thus which heats the PCV valve with heat of the oil is formed. | 12-10-2015 |
20160010522 | BREATHER STRUCTURE FOR INTERNAL COMBUSTION ENGINE | 01-14-2016 |
20160024983 | PCV CHANNEL DISCONNECT DETECTION DEVICE AND METHOD - A Positive Crankcase Ventilation (PCV) channel disconnect detection device and method is provided for an engine having a crankcase, an intake system for delivering metered air to the engine, and a PCV channel for containing PCV gas flow between the crankcase and the intake system and having a first end and a second end. The PCV channel disconnect detection device includes a detection channel that supplies unmetered air surrounding one of the ends of the PCV channel to a post-throttle portion of the intake system. The detection channel is inoperable in response to a vacuum in the post-throttle portion of the intake system if the PCV channel connection is connected. The detection channel is operable in response to the vacuum in the post-throttle portion of the intake system if the PCV channel is disconnected. The detection channels may be configured to bypass all flow restrictions in the PCV system. | 01-28-2016 |
20160047283 | INTAKE MANIFOLD PORTS AND PCV PASSAGES INTEGRATED INTO CAM COVER - An internal combustion engine having manifold ports and positive crankcase ventilation (PCV) passages integrated into the cam cover is disclosed. The engine system comprises a cam cover having an internal, gas-passing passage, a PCV valve associated with the passage, an oil separator associated with the PCV valve, and an intake manifold having a port, the port associated with the PCV valve. An oil separator is fitted between the passage and the PCV valve. The oil separator is mounted on the cam cover. A manifold chamber is also provided and the PCV oil separator is associated with the manifold chamber. | 02-18-2016 |
20160123199 | POSITIVE CRANKCASE VENTILATION ("PCV") VALVE MOUNTING STRUCTURE - A positive crankcase ventilation (PCV) valve mounting structure has a blow-by gas passage with an upstream-side passage portion and a down-stream-side passage portion positioned in a cylinder head and an intake manifold, respectively. The blow-by gas passage may receive the PCV valve therein such that an upstream side portion of a valve case of the PCV valve is positioned within the upstream-side passage portion and that a downstream side portion of the valve case is positioned within the down-stream-side passage portion when the cylinder head and the intake manifold are joined together. A gasket may seal the cylinder head to the intake manifold and may include a seal portion positioned between the valve case of the PCV valve and at lest one of the cylinder head and the intake manifold. | 05-05-2016 |
20170234178 | TURBO PCV VALVE | 08-17-2017 |