15results about "Engine ignition" patented technology

An air-vapor engine which exhibits one or more cylinders and a piston located therein, by which a stroke movement can be performed. Furthermore, the air-vapor engine has an injection nozzle and a prechamber. The prechamber is arranged between the injection nozzle and the cylinder, a fuel fluid is introduced into the prechamber from the injection nozzle. Compressed air from the cylinder can be received by the prechamber. This enables the stroke movement of the cylinder. In addition, the cylinder is connected to a condenser via an outlet valve such that the air-vapor mixture or the vapor of the air-vapor mixture condenses and is present in the condenser as condensate. The condenser and the injection nozzle are in flow connection. This means that the air-vapor engine exhibits a circuit, resulting in efficient operability.

The application discloses a kind of throttling-based auxiliary ignition device, including circular cross-section combustion chamber, kerosene injection support plate and injection hole installation point, combustion chamber includes isolation section, groove section and expansion section, kerosene injection support plate is installed in isolation section export, injection hole installation point and the installation position of kerosene injection support plate are in the same section, injection hole installation point is spaced distribution with kerosene injection support plate, and a group of air injection holes are installed in injection hole installation point.The application can promote kerosene reliable ignition to start stable combustion under the condition of not using flammable gas, high-frequency spark plug and igniter, and can be reused, simplify auxiliary ignition device, reduce system complexity, improve reliability.

A method for a hybrid vehicle engine (20) comprising: Rotating the engine (20) by means of an electric motor (18) in response to an input from an operator (132) during selected non-combustion engine conditions in which the vehicle has been placed in a service mode, characterized in that the input from the operator (132) is a requested engine position including a requested piston position of a particular cylinder (30) of the engine (20).

The invention proposes a warming ignition method comprising a heating source employing a heating element, mounted at the outlet of a fuel supply device such that the fuel can be rapidly heated to an ignition temperature, the fuel supply device comprising a fuel pump and a delivery conduit, the fuel pump delivering the fuel from a storage tank to the heating source. Fuel is conveyed to the heating source through the fuel supply device, the heating source heats the fuel to the ignition temperature of the fuel, flames are ignited, through heating ignition, fuel combustion is more sufficient, emission of unburned fuel is reduced, and meanwhile energy consumption is reduced. Fuel is conveyed to the heating source through the fuel supply device, the heating source heats the fuel to the ignition temperature of the fuel, and flames are ignited. Fuel is heated to the ignition temperature through the heating source, efficient combustion is achieved, and the advantages of being simple in structure, low in manufacturing cost, good in heat insulation effect, sufficient in combustion, energy-saving and the like are achieved.

An alternative heat source for an engine with an elongated compartment with first and second ends, a directed energy device capable of sending a pulse of photonic energy to a focal point within the first end of the compartment, an intake allowing for the entry of a gas into the elongated compartment, an exhaust allowing for the exit of the gas from the elongated compartment, and a piston capable of moving within the elongated compartment between the first and second ends. The pulse of photonic energy at the focal point heats the gas and causes a corresponding expansion of the gas in the elongated compartment, driving the piston toward the second end of the elongated compartment, where the piston movement can be translated into motive force. The same principle can work with a rotary chamber, or a dual chambered linear system.

This disclosure provides a method and system for engine control. These methods and systems are used to dry engine cylinders in situ in response to engine flooding. In one example, a laser ignition device is sequentially operated in each engine cylinder while the cylinder is parked with its intake valve closed and exhaust valve open. Heat generated by the laser operation vaporizes liquid fuel in the cylinder, which then flows out of the cylinder through the open exhaust valve, thereby accelerating cylinder drying.

Disclosed herein is an ignition device for an internal combustion engine, such as specifically an expander. The ignition device includes an optical tube with a distal end, a proximal end, and an axial cavity extending from the proximal end to the distal end, the axial cavity forming an optical path for a laser radiation. The ignition device further includes; a first optical element located at the distal end of the optical tube. The first optical element forms a pressure barrier adapted to prevent penetration of gas from a combustion chamber into the axial cavity.

The utility model relates to a laser ignition device, a laser guiding assembly and an internal combustion engine. The laser guiding assembly comprises a sleeve, a light guiding part and a field lens. The light guide piece is arranged in the sleeve in a penetrating mode. The field lens is installed on the sleeve and located in front of the light guide piece, and a plurality of annular light-emitting parts which are sequentially arranged in a nested mode from inside to outside are arranged on the light-emitting face of the field lens. During use, the light guide part transmits laser emitted by the laser device to the field lens, the laser is shaped by the field lens and is emitted outwards through the plurality of light emitting parts of the light emitting surface, and the laser emitted outwards is a plurality of annular light spots which are sequentially nested from inside to outside. Furthermore, when the multiple annular light spots hit the ignition positions of the combustion chamber, the overall area is large, and the number of the ignition positions is large. Therefore, the situation that materials in the cylinder are damaged due to the fact that the light spot energy density is too concentrated due to the small light spot area can be prevented, the ignition success rate can be increased due to the large ignition area, fuel can be fully combusted, and therefore the fuel utilization rate is increased, and emission of harmful substances is reduced.

An ammonia-fueled engine based on oxygen enhancement and reactive activity control, and an ammonia-rich combustion control method thereof are provided. The ammonia-fueled engine based on oxygen enhancement includes a jet ignition device and an ammonia gas injector. An oxygen injector is provided on the jet ignition device. During the operation of the ammonia-fueled engine, the ammonia gas injector firstly injects ammonia fuel into a combustion chamber, and ammonia gas in the combustion chamber enters a prechamber inner cavity through a jet hole during a compression stroke, and the oxygen injector firstly injects oxygen gas into a prechamber to reduce an ammonia concentration in a gas mixture in the prechamber, dilute the gas mixture in the prechamber, improve the reaction activity of the gas mixture, and ensure the speed and intensity of an initial flame; and then a jet flame is formed to ignite over-concentrated ammonia-air mixture in the combustion chamber.

An approach is disclosed for generating seed electrons at a spark gap (100) in the absence of 85Kr. The present approach utilizes the photo-electric effect, using a light source (120) with a specific nominal wave length (or range of wavelengths) at a specific level of emitted flux to generate seed electrons. A spark gap (100) device is provided that includes a first electrode (104) having a first surface and a second electrode (102) having a second surface offset from and facing the first surface. The spark gap further includes a light source (120) configured to emit light toward at least the first surface such that photons emitted by the light source when the spark gap is operated are incident on the first surface and cause electron emission from the first surface.

One embodiment of the optical oscillator includes: a first reflector that reflects light of a first wavelength; a laser medium that is excited by excitation light of a second wavelength different from the first wavelength to emit light of the first wavelength; a second reflector that, together with the first reflector, forms an unstable resonator that outputs a ring-shaped laser of the first wavelength; and a saturable absorber disposed between the laser medium and the second reflector, whose transmittance increases with the absorption of the first wavelength light, wherein the power of the excitation light is set to P. p (kw), let the inner diameter of the ring laser be d i Set the outer diameter to d o , will d o / d i When the magnification is set to m, the magnification m satisfies a0 + a1Log(P) p )≤m≤b0+b1P p +b2P p 2 Where a0 = 1.421, a1 = 0.10678, b0 = 2.8698, b1 = 0.79408, b2 = -0.022536.

The present disclosure provides a method and system for operating an engine in wet conditions. A method and system are provided for improving the starting of an engine that has been stopped during wet ambient conditions. The method and system can reduce the likelihood of starting an engine with liquid water in the engine cylinders, thereby improving engine starting. In one example, a laser is applied to metal surfaces within the engine to vaporize water that may be present in the engine due to condensation.

An ammonia-fueled engine based on oxygen enhancement and reactive activity control, and an ammonia-rich combustion control method thereof are provided. The ammonia-fueled engine based on oxygen enhancement includes a jet ignition device and an ammonia gas injector. An oxygen injector is provided on the jet ignition device. During the operation of the ammonia-fueled engine, the ammonia gas injector firstly injects ammonia fuel into a combustion chamber, and ammonia gas in the combustion chamber enters a prechamber inner cavity through a jet hole during a compression stroke, and the oxygen injector firstly injects oxygen gas into a prechamber to reduce an ammonia concentration in a gas mixture in the prechamber, dilute the gas mixture in the prechamber, improve the reaction activity of the gas mixture, and ensure the speed and intensity of an initial flame; and then a jet flame is formed to ignite over-concentrated ammonia-air mixture in the combustion chamber.