Patent application number | Description | Published |
20130028771 | OIL SEAL ARRANGEMENT FOR ROTARY INTERNAL COMBUSTION ENGINE - A rotor of a rotary internal combustion engine, including an annular oil seal assembly snugly received within each oil seal groove, each oil seal assembly including a seal ring retaining first and second axially spaced apart annular sealing elements in substantial radial alignment with one another, the seal ring radially pressing each of the sealing elements in sealing engagement with a respective surface in the groove in opposite directions from one another, and a spring member biasing the seal ring axially away from the end face. | 01-31-2013 |
20130028773 | APEX SEAL FOR ROTARY INTERNAL COMBUSTION ENGINE - A rotor of a rotary internal combustion engine including apex springs each being formed of a continuous band including first and second opposed end sections each contacting the inner surface of the apex seal adjacent to a respective one of the end faces, a respective intermediate section extending radially inwardly from each end section and contacting the outer surface of the groove along a respective contact zone, and a central section extending axially between the intermediate sections and having a portion extending radially outwardly from each of the intermediate sections, the central section extending out of contact with both the outer surface of the groove and the apex seal. | 01-31-2013 |
20130028774 | ROTARY INTERNAL COMBUSTION ENGINE WITH PHASING GEAR - In one aspect, described is a rotor of a rotary internal combustion engine, including a phasing gear with an annular meshing section including a plurality of radially inwardly oriented teeth and an annular attachment section connected to the meshing section and coaxial therewith, the attachment section being offset axially inwardly from the teeth and having at least a portion thereof located radially inwardly of the teeth, and a fastener apparatus connecting the phasing gear to the rotor body, the fastener apparatus engaging the rotor body radially inwardly of the teeth. | 01-31-2013 |
20130199491 | ROTARY INTERNAL COMBUSTION ENGINE WITH COOLED INSERT - A rotary internal combustion engine having an insert opening defined in a hot area of one of the walls of the stator body and in communication with its internal cavity, at least one groove defined within the opening around a perimeter thereof, at least one coolant inlet channel defined therein in communication with each groove, and at least one coolant outlet channel defined therein in communication with each groove. A cooling jacket lines the insert opening, the cooling jacket cooperating with each groove to define a cooling gallery around the insert opening. An insert is sealingly received in the cooling jacket, the insert being made of a material having a greater heat resistance than that of the wall. | 08-08-2013 |
20140020381 | COMPOUND CYCLE ENGINE - A compound cycle engine having an output shaft; at least two rotary units each defining an internal combustion engine, a velocity turbine, and a turbocharger is discussed. The velocity turbine includes a rotor in driving engagement with the output shaft between two of the rotary units. The exhaust port of each rotary unit is in fluid communication with the flowpath of the velocity turbine upstream of its rotor. The outlet of the compressor of the turbocharger is in fluid communication with the inlet port of each rotary unit. The inlet of the pressure turbine of the turbocharger is in fluid communication with the flowpath of the velocity turbine downstream of its rotor. A method of compounding at least two rotary engines is also discussed. | 01-23-2014 |
20150075483 | ROTARY INTERNAL COMBUSTION ENGINE WITH EXHAUST PURGE - In one aspect, described is a rotary engine having a purge port located rearwardly of the inlet port and forwardly of the exhaust port along a direction of the revolutions of the rotor, the purge port being in communication with the exhaust port through each of the chambers along a respective portion of each revolution, and the inlet and outlet ports being relatively located such that a volumetric compression ratio of the engine is lower than a volumetric expansion ratio of the engine. | 03-19-2015 |
20150275756 | COMPOUND CYCLE ENGINE - A compound cycle engine having an output shaft; at least two rotary units each defining an internal combustion engine, a first stage turbine, and a turbocharger is discussed. The first stage turbine includes a rotor in driving engagement with the output shaft between two of the rotary units. The exhaust port of each rotary unit is in fluid communication with the flowpath of the first stage turbine upstream of its rotor. The outlet of the compressor of the turbocharger is in fluid communication with the inlet port of each rotary unit. The inlet of the second stage turbine of the turbocharger is in fluid communication with the flowpath of the first stage turbine downstream of its rotor. The first stage turbine has a lower reaction ratio than that of the second stage turbine. A method of compounding at least two rotary engines is also discussed. | 10-01-2015 |
20150337726 | ROTARY INTERNAL COMBUSTION ENGINE WITH COOLED INSERT - A rotary internal combustion engine having an insert opening defined in a hot area of one of the walls of the stator body and in communication with its internal cavity. A cooling jacket is received in and lines the insert opening. An insert is sealingly received in the cooling jacket and made of a material having a greater heat resistance than that of the wall. The cooling jacket extends between the insert and the wall along most of the length of the insert to prevent direct contact between the insert and the wall. A cooling gallery surrounds the cooling jacket and the insert, and is defined at least in part by the cooling jacket such that a coolant circulated therein contacts the cooling jacket. The cooling jacket is located between the cooling gallery and the insert. | 11-26-2015 |