摘要:
A multiple spark pattern internal combustion initiation device includes a body defining a prechamber and a plurality of orifices from the prechamber. The device includes at least two electrical circuits which each form a spark gap with an electrical ground inside the prechamber, operable to create a plurality of different spark patterns. The device may be part of an internal combustion engine which includes a housing with a combustion chamber connected to the prechamber, and means for supplying a lean gaseous fuel mixture into the combustion chamber.
摘要:
A method of operating an internal combustion engine is provided. The engine includes a main combustion chamber in fluid communication with a prechamber. The method comprises the step of varying the volume within the prechamber during a portion of a compression stroke of the main combustion chamber.
摘要:
A multiple spark pattern internal combustion initiation device includes a body defining a prechamber and a plurality of orifices from the prechamber. The device includes at least two electrical circuits which each form a spark gap with an electrical ground inside the prechamber, operable to create a plurality of different spark patterns. The device may be part of an internal combustion engine which includes a housing with a combustion chamber connected to the prechamber, and means for supplying a lean gaseous fuel mixture into the combustion chamber.
摘要:
An internal combustion engine has at least one combustion chamber and a piston configured to reciprocate within the at least one combustion chamber between a top-dead-center position and a bottom-dead-center position. The internal combustion engine also has a pre-combustion chamber, an air induction system, a fuel system, a spark plug at least partially disposed within the pre-combustion chamber. The air induction system is configured to direct air into the at least one combustion chamber. The fuel system is configured to direct gasoline into the at least one combustion chamber. The spark plug is configured to selectively ignite a mixture of the air and gasoline. The internal combustion engine also has an exhaust system configured to direct exhaust from the at least one combustion chamber and an exhaust gas recirculation system configured to selectively redirect at least a portion of the exhaust from the exhaust system back to the air induction system.
摘要:
An internal combustion engine and method of operating an engine is provided. The engine comprises a piston cylinder formed within an engine block, an engine head secured to the engine block, a primary piston configured to slide within the piston cylinder, a main combustion chamber that is defined by the primary piston, piston cylinder, and engine head, a variable volume prechamber formed within the engine head and in fluid communication with the main combustion chamber, an ignition device configured to ignite a fuel within the prechamber, and a prechamber piston configured to translate within the prechamber. Translation of the prechamber piston within the prechamber varies the volume within the prechamber. The engine is characterized in that the prechamber comprises at least one orifice that provides fluid communication between the prechamber and the main combustion chamber.
摘要:
An air induction system for an engine is disclosed. The air induction system has a compressor operable to compress air directed into the engine, a bypass valve, and a throttle valve. The bypass valve may be disposed between the compressor and the engine and may have a valve element movable to selectively divert a portion of the compressed air away from the engine in response to a desired air-to-fuel ratio of the engine. The throttle valve may be disposed between the bypass valve and the engine and may have a valve element movable to selectively restrict the flow of compressed air into the engine in response to a desired air-to-fuel ratio of the engine. The movements of the valve elements of the bypass and throttle valves may be substantially sequential.
摘要:
A power system is provided having an engine configured to combust a substantially stoichiometric air/fuel mixture and produce a flow of exhaust. The power system also has an exhaust passageway fluidly connected to the engine. In addition, the power system has a catalytic device situated within the exhaust passageway. Furthermore, the system has an exhaust gas recirculation loop fluidly connected to the exhaust passageway. The system further has a steam fuel reformer situated within the exhaust gas recirculation loop.
摘要:
A method of operating an engine is provided. The method may include supplying a combustible combination of reactants to a combustion chamber of the engine, which may include supplying a first hydrocarbon fuel, hydrogen fuel, and a second hydrocarbon fuel to the combustion chamber. Supplying the second hydrocarbon fuel to the combustion chamber may include at least one of supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into an intake system of the engine and supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into the combustion chamber. Additionally, the method may include combusting the combustible combination of reactants in the combustion chamber.
摘要:
A control system for an engine having a first cylinder and a second cylinder is disclosed having a first engine valve movable to regulate a fluid flow of the first cylinder and a first actuator associated with the first engine valve. The control system also has a second engine valve movable to regulate a fluid flow of the second cylinder and a sensor configured to generate a signal indicative of a pressure within the first cylinder. The control system also has a controller that is in communication with the first actuator and the sensor. The controller is configured to compare the pressure within the first cylinder with a desired pressure and selectively regulate the first actuator to adjust a timing of the first engine valve independently of the timing of the second engine valve based on the comparison.
摘要:
A method of operating an engine is provided. The method may include supplying a combustible combination of reactants to a combustion chamber of the engine, which may include supplying a first hydrocarbon fuel, hydrogen fuel, and a second hydrocarbon fuel to the combustion chamber. Supplying the second hydrocarbon fuel to the combustion chamber may include at least one of supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into an intake system of the engine and supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into the combustion chamber. Additionally, the method may include combusting the combustible combination of reactants in the combustion chamber.