摘要:
A method to determine the injection pattern in the intake stroke of the combustion cycle of the cylinders of a direct-injection internal combustion engine, which includes determining the overall quantity of fuel to be injected for each combustion cycle of each cylinder during the intake stroke; determining the maximum quantity of fuel to be injected for each partial injection as a function of the value of the start of injection angle, of the speed and of the load of the internal combustion engine; and determining the number of partial injections and the objective quantity to be injected for each partial injection as a function of the quantity of fuel to be injected for each combustion cycle of each cylinder during the intake stroke and of the maximum quantity of fuel to be injected for each partial injection.
摘要:
Systems and methods for separating hydrocarbons on an internal combustion powered vehicle via one or more metal organic frameworks are disclosed. Systems and methods can further include utilizing separated hydrocarbons and exhaust to generate hydrogen gas for use as fuel. In one aspect, a method for separating hydrocarbons can include contacting a first component containing a first metal organic framework with a flow of hydrocarbons and separating hydrocarbons by size. In certain embodiments, the hydrocarbons can include alkanes.
摘要:
A mobile system and method that reform flare gas, methane, or natural gas, using air without steam, to directly produce methanol, a clean burning gasoline blend, component, and/or substitute are disclosed. The system first reforms the air-methane mixture at ambient atmospheric pressure, then compresses the resulting CO-hydrogen-nitrogen gas mixture to 600 psi, and feeds it through a methanol reactor which reacts the gas mixture directly into methanol. The nitrogen is returned by the system back to the atmosphere. Methanol is a clean burning gasoline substitute, and can be used to displace significantly costlier and dirtier petroleum-based fuel, while solving a critical problem with flaring. For example, the over 120 billion cubic feet per year that was flared in North Dakota in 2014 could be converted into over 6 million tons of methanol.
摘要:
A method includes forming a combustible mixture by mixing generally homogeneously a first fuel and air and introducing this mixture into a cylinder, compressing the combustible mixture with a piston in a compression stroke, introducing a second fuel into a prechamber at an introduction-time before start of combustion thus creating a prechamber charge, in which the second fuel being of the same or different chemical composition and/or concentration with respect to the first fuel, and spark igniting the prechamber charge. Emission of the cylinder and/or mechanical stress of the cylinder caused by the combustion are monitored. If emissions and/or mechanical stress are above respective predetermined thresholds, individually for the at least one cylinder, the chemical composition and/or the amount of second fuel introduced into the prechamber, and/or temperature of the cylinder charge and/or spark timing , are changed.
摘要:
One of the two combustion chambers of an internal combustion engine using variable compression ratio and fuel charge, VCRC engine, is improved. These improvements involve adding another, second combustion chamber for mixing products of the first combustion with engine air and refining the insulation of engine heat in the engine process.
摘要:
The invention provides a system and method for controlling corona discharge and arc formations during a single corona event, i.e. intra-event control. A driver circuit provides energy to the corona igniter and detects any arc formation. In response to each arc formation, the energy provided to the corona igniter is shut off for short time. The driver circuit also obtains information about the arc formations, such as timing of the first arc formation and number of occurrences. A control unit then adjusts the energy provided to the corona igniter after the shut off time and during the same corona event based on the information about the arc formations. For example, the voltage level could be reduced or the shut-off time could be increased to limit arc formations and increase the size of the corona discharge during the same corona event.
摘要:
Method and apparatus for operating a two-cycle or four-cycle externally excited combustion engine with external ignition means where at least the fuel required for the ignition is introduced without admixture of main air into an evaporating chamber open toward the combustion chamber where it is precipitated against a non-water cooled wall that is hot during operation and which is elongated and encompasses the vaporizing chamber, is vaporized and is pushed to the ignition point in the vaporizing chamber together with some air until ignition takes place and where immediately after the ignition burning mixture is blown out of the vaporizing chamber into the combustion chamber, where the introduction of the fuel into the vaporizing chamber begins preferably at the end or shortly after the power stroke, after which during the compression stroke compressed air or compressed air-fuel mixture is pushed out of the combustion chamber into the vaporizing chamber, is mixed therein with vaporized fuel and the mixture is pushed to the ignition point provided in the vaporizing chamber, while simultaneously the burned out fuel gas in the vaporizing chamber is moved into a closed end of the vaporizing chamber and is compressed there, whereupon after the ignition burning mixture is blown away from the ignition point in the form of a bunched, very rapid stream of flames through the vaporizing chamber and, subsequently, the last parts of the burning mixture are displaced in the vaporizing chamber toward the combustion chamber by the burned out fuel gas.