Abstract:
A low emission combustor assembly particularly suited for an automotive gas turbine engine has an inlet plenum supplied with regenerated compressor discharge, an exhaust plenum, a diffusion flame combustion chamber disposed between the inlet and exhaust plenums, and a catalytic combustion chamber also disposed between the inlet and exhaust plenums so that parallel flow paths are established between the inlet and exhaust plenums. During engine start-up, fuel is supplied only to the diffusion flame combustion chamber and regenerated compressor discharge simultaneously flowing through the catalytic combustion chamber heats the catalyst to operating temperature and cools and dilutes exhaust from the diffusion flame combustion chamber. When the catalyst reaches operating temperature fuel is directed only to the catalytic combustion chamber wherein an ultra lean air/fuel ratio mixture is catalytically oxidized, the exhaust from this reaction being cooled and diluted by regenerated compressor discharge simultaneously flowing through the diffusion flame combustion chamber.
Abstract:
Adjustable swirl developing vane means are provided in the outlet end portions of the intake ports of an internal combustion engine adjacent the intake valve heads to provide variable swirl of cylinder intake charges through adjustment of the vane positions. Both rigid and flexible adjustable vane arrangements are disclosed as are various means for positioning the vanes.
Abstract:
In order to improve volumetric efficiency and to encourage swirling flow inside a combustion chamber of a reciprocating engine, an intake valve is provided having its stem located eccentrically with respect to the head of the valve. The valve stem guide bore in the cylinder head of the engine is correspondingly located to one side of the axis of the intake port and, preferably, toward the center of the combustion chamber. In addition, drive means are associated with the valve whereby it is oscillated about the axis of the stem so as to bias the flow area, upon opening movement of the valve, in a direction so as to direct an induction charge into the combustion chamber in a flow direction substantially tangential to the cylinder wall.
Abstract:
Spark ignition internal combustion engine arrangements are disclosed wherein swirling stratified charges are formed in the engine combustion chambers, each charge having a central core of relatively fuel-rich mixture and a surrounding peripheral portion of leaner mixture or air, and in which the exhaust valve for each chamber is connected with the fuel-lean peripheral portion so that during the exhaust process the portions of the burned gases which are lowest in unburned hydrocarbons will be preferentially exhausted, leaving those portions richest in hydrocarbons as residual gases within the chamber.
Abstract:
An internal combustion engine having an air flow sensitive fuel sink-distribution-source arrangement that intercepts the liquid fuel film on the intake passage wall adjacent the intake port entry to the combustion chamber and accumulates this fuel on reduced air flow and releases the accumulated fuel to the intake port on increased air flow while distributing the accumulated fuel about the intake port.
Abstract:
A solenoid actuated valve assembly has first and second valve members, first and second valve seats, a solenoid coil, a first armature effective when the coil is energized with a positive current to permit displacement of the first valve member from the first valve seat, and a second armature effective when the coil is energized with a negative current to displace the second valve member from the second valve seat. The first valve member engages the first valve seat when the coil is energized with a negative current, and the second valve member engages the second valve seat when the coil is energized with a positive current.
Abstract:
A port scavenged two cycle engine with a separate source of pressurized air has a valve between each port and the air supply to provide a high blowdown pulsing scavenging flow to the cylinders similar to that of a crankcase scavenged engine. Various arrangements with additional features are disclosed.
Abstract:
A two cycle engine is provided with a diffusing exhaust port which includes axially spaced separating vanes that divide the port into a plurality of axially spaced passages to more closely approach ideal diffusing exhaust flow during all degrees of exhaust port opening and thereby maximize the exhaust energy recovery during blowdown and the entire exhaust process. A timing valve may be used at the port outlet or elsewhere to block flow through the upper port passages and allow greater expansion of the combustion gas in the cylinder at part load while maintaining efficient energy recovery by diffusing flow in the open passages of the exhaust port.
Abstract:
The present invention provides a spare tire apparatus for installation on a vehicle. The spare tire can be installed to a vehicle without the use of a conventional jack and can use the motion of the vehicle to secure itself to the vehicle. The inventive spare tire does not require removal of the flat tire which is attached with the vehicle.
Abstract:
A ratio control mechanism for a variable ratio friction drive transmission has an adjustable torus member. The friction drive transmission includes input and output friction members which are frictionally drive connected by the torus member. The central or major axis of the torus member is controlled angularly relative to the input and output friction members by a four-bar linkage. Angular adjustment of the torus member causes a speed ratio change between the input and output members.