Abstract: A rotary engine includes an insert having a pilot subchamber defined therein and communicating with the internal cavity of the engine. A pilot fuel injector has a tip in communication with the pilot subchamber. An ignition element extends into an element cavity defined through the insert adjacent the pilot subchamber. The element cavity is in communication with the pilot subchamber through a communication opening defined in the insert between the element cavity and the pilot subchamber. The communication opening is smaller than a portion of the ignition element adjacent the communication opening such as to prevent the portion of the ignition element from completely passing through the communication opening upon breaking off of the portion of the ignition element from a remainder of the ignition element. An outer body for a rotary engine and a method of combusting fuel in a rotary engine are also provided.

Abstract: A gear drive system is provided having a first gear and a second gear. The second gear has a first peripheral portion and a second peripheral portion. A first set of gear teeth can be defined peripherally over the first peripheral portion and/or the second peripheral portion. The first peripheral portion and/or the second peripheral portion can be more resilient, resulting in a first backlash between the first set of gear teeth and the teeth of the first gear, less than a second backlash between the second set of gear teeth and the teeth of the first gear. Each gear tooth of the second gear can have a gear tooth spacing between adjacent gear teeth. The gear tooth spacing over the first peripheral portion and/or the second peripheral portion can be less than the gear tooth spacing at portions other than the first peripheral portion and/or the second peripheral portion.

Abstract: A rotary engine includes an insert having a pilot subchamber defined therein and communicating with the internal cavity of the engine. A pilot fuel injector has a tip in communication with the pilot subchamber. An ignition element extends into an element cavity defined through the insert adjacent the pilot subchamber. The element cavity is in communication with the pilot subchamber through a communication opening defined in the insert between the element cavity and the pilot subchamber. The communication opening is smaller than a portion of the ignition element adjacent the communication opening such as to prevent the portion of the ignition element from completely passing through the communication opening upon breaking off of the portion of the ignition element from a remainder of the ignition element. An outer body for a rotary engine and a method of combusting fuel in a rotary engine are also provided.

Abstract: An internal combustion engine includes a pre-chamber. In another aspect, pressure within a pre-chamber is equal to or greater than pressure within a main combustion chamber at least prior to ignition in the main combustion chamber. In yet another aspect, internal combustion engine control software automatically controls pressure within a turbulent jet ignition pre-chamber, controls a valve-actuator to admit a fuel-air charge into the pre-chamber, and causes an igniter to initiate combustion in the pressurized pre-chamber. This also permits the rate of combustion to be controlled in the primary chamber regardless of the air-fuel ratio or the diluent fraction in the main chamber. Another aspect employs a pre-chamber purge pump with separate air and fuel injection.

Abstract: A Wankel engine with a peripheral wall of the stator body including a non-circular opening formed therethrough and defining at least part of a port. The opening has a perimeter defined by a first edge and remaining edges, with the remaining edges being located downstream of the first edge with respect to a direction of rotation of the rotor. The remaining edges extend non parallel to a longitudinal axis of the apex seals.

Abstract: A rotary engine rotary engine according to the present invention comprises a main housing assembly and a rotor assembly rotatably supported within the housing. The rotor assembly has two rotors, an intake/compression rotor rotatably disposed within the intake/compression housing, and a power/exhaust rotor rotatably disposed within the power/exhaust housing. The rotors have N number of apexes and sides, wherein N is an integer greater than 2. A rotating chamber is formed between each side of the each rotor and the inner wall of the respective housing. The stages of the thermodynamic cycle of the engine occur within these chambers. For example, if the rotors have three sides, the rotors will have a triangular-like shape with three apexes. The apexes form the outermost radial part of the rotors which engage the inner wall of the respective housing bore.

Abstract: An internal combustion engine is provided. The engine comprises at least one combustion chamber. The engine is suitable for various types of fuel. The engine, depending on fuel type, may have at least one spark plug. The engine uses an external source of compressed oxidant, such as air, which is delivered from a compressor and/or pressurized storage tank. Compressed oxidant, such as air, is delivered directly into the combustion chamber. Fuel is delivered directly into the combustion chamber. Oxidant and fuel mixture is ignited either by means of a spark plug, laser ignition, or by other means, or ignites spontaneously, depending on fuel type and pressure in the combustion chamber. The engine may comprise at least one cylinder, or may be of rotary or other type. A hybrid vehicle based on such an engine is provided. An automatic parking system for such a vehicle is provided.

Abstract: The present invention relates to an improved rotary engine having one positive motion stroke, the rotary engine comprising at least one of a piston having at least one piston vane. At least one of a unidirectional bearing is operationally coupled to the piston, wherein the piston is configured to allow the piston vane to rotate and the unidirectional bearing prevents the piston vane from rotating during a combustive force or a thrust force injection. A peddle block is positioned in the pathway of the piston vane, wherein as the piston vane approaches the peddle block a secondary exhaust pressure increases against the piston vane surface, the secondary exhaust pressure, in part, causes the piston vane to rotate and self-align for a subsequent cycle. Other exemplary embodiments allow for a secondary exhaust pressure to rotate a piston vane causing the piston vane to self-aligning for the next cycle.

Abstract: The problems of prior compressor structures relying upon conventional check valves are obviated by using, instead, flow control passages which operate to control flow while avoiding mechanical moving elements which may become problematical.

Abstract: An ECU determines the presence/absence of a fault of a negative pressure generation device that has an ejector that generates a negative pressure that is greater than the negative pressure that is to be extracted from an intake manifold of an internal combustion engine, and a VSV that causes the ejector to function or stop functioning. The ECU includes a presence/absence-of-abnormality determination portion that determines the presence/absence of an abnormality of the negative pressure generation device on the basis of variation of the rotation speed Ne of the internal combustion engine in accordance with change in the state of operation of the VSV.

Abstract: A gaseous fuel generator comprises a controller is for supplying and adjusting power. A gas generating assembly is driven by the power supplied by the controller to electrolyze water into mixed gas of hydrogen and oxygen. A tube has an end communicating with the gas generating assembly for transporting the gaseous fuel. An adjusting valve is disposed on the tube for controlling the flow of the mixed gas in the tube. A pressure sensor is disposed on the tube for detecting the pressure of the mixed gas in the tube and sending signals of detecting to the controller to make the gas generating assembly adjusting the rate of electrolyzing, and a burner communicates with the tube to receive the mixed gas and burn the mixed gas.

Abstract: The invention relates to a fuel injection rotary piston internal combustion engine of the trochoidal type with a housing made up of a peripheral portion and two side walls and with a first injection nozzle in the peripheral portion and a second injection nozzle in the inlet port, which are connected to a fuel metering device and of which the delivery quantities are adjustable. A fuel delivery device continuously injects a quantity of fuel proportional to the air intake and is in permanent communication with the first nozzle. Control means connect the second nozzle to the fuel delivery device only from a predetermined part-load up to full load conditions.