摘要:
The invention relates to an at least partly stratified (such as at least partly dual stratified) charge combustion engine, especially CAI (combustion assisted ignition), HCC, HCSI and HCCI engine, in which the combustion of a hydrocarbon containing fuel generating a flame emitting photon is operated in a chamber with a wall provided with a cerium oxide - carbon containing coating, said coating further comprising at least comprising oxides of the followings elements Pr, Nd, La and at least Y and/or Zr. The engine of the invention enables a catalytic reduction of NOx exhaust rate.
摘要:
An engine includes a rotatable crankshaft and an expansion piston slidably received within an expansion cylinder and operatively connected to the crankshaft. A crossover passage including walls connects a source of high pressure gas to the expansion cylinder. A crossover expansion (XovrE) valve is operable to control fluid communication between the crossover passage and the expansion cylinder. The XovrE valve includes a valve head and a valve stem extending from the valve head. A fuel injector operable to inject fuel into the crossover passage includes a plurality of spray holes disposed in a nozzle end and aimed at an at least one target at which fuel emitting from the spray holes is directed to form at least one spray pattern. The at least one target is located above a seated position of the XovrE valve head and between the walls of the crossover passage and the XovrE valve stem.
摘要:
The invention relates to an internal combustion engine (1), especially for use in a motor vehicle, provided with a combustion chamber (4) in which air can be drawn via a throttle valve (11). Fuel can be directly injected into the combustion chamber by an injection valve (9) in a first operating mode during an induction phase or in a second operating mode during a compression phase, and the fuel can be ignited by a spark plug (10). An air/fuel mixture can be fed to the combustion chamber (4) via a tank ventilation assembly (15, 16, 17). The internal combustion engine (1) is controlled and/or regulated by the control device (18) in such a way that, in the second operating mode, a lean air/fuel mixture is drawn into the combustion chamber (4) via the throttle valve (11) and via the tank ventilation assembly (15, 16, 17) and is ignited by fuel which is additionally injected into the combustion chamber (4) and ignited therein.
摘要:
The invention relates to a metering device comprising a valve body (12) containing a fluid passage (20) for the pressurized fluid to be dosed, the fluid passage (20) terminating with a metering opening (16), an axially moveable valve needle (22) passing through the fluid passage (20), the valve needle (22) having a first end (24) inside the fluid passage (20), controlling the opening and closing of the metering opening (22), and having a second end (26) inside an actuator chamber (40), the second end cooperating with an actuator assembly (42) in the actuator chamber (40) controlling the axial movement of the needle (22), wherein in operation the pressure in the actuator chamber (40) is smaller than the pressure in the fluid passage (20), and a bushing element (30, 38) for the valve needle (22), hydraulically isolating the actuator chamber (40) and the fluid passage (20). The bushing element is formed by an elastic element (30, 38), hermetically fastened to the valve needle (22) and to the valve body (12).
摘要:
The invention relates to an internal combustion engine (1), especially for use in a motor vehicle, provided with a combustion chamber (4) in which air can be drawn via a throttle valve (11). Fuel can be directly injected into the combustion chamber by an injection valve (9) in a first operating mode during an induction phase or in a second operating mode during a compression phase, and the fuel can be ignited by a spark plug (10). An air/fuel mixture can be fed to the combustion chamber (4) via a tank ventilation assembly (15, 16, 17). The internal combustion engine (1) is controlled and/or regulated by the control device (18) in such a way that, in the second operating mode, a lean air/fuel mixture is drawn into the combustion chamber (4) via the throttle valve (11) and via the tank ventilation assembly (15, 16, 17) and is ignited by fuel which is additionally injected into the combustion chamber (4) and ignited therein.
摘要:
La présente invention concerne un moteur à combustion interne à 4 temps à allumage commandé et à injection directe comprenant au moins une chambre de combustion (4) délimitée par un piston (10), un cylindre et une culasse, un conduit d'admission (7) associé à une soupape d'admission (9), un conduit d'échappement (1) avec lequel coopère une soupape d'échappement (6), un premier moyen d'allumage (3) disposé à proximité de la soupape d'admission (9). Conformément à l'invention, le moteur comprend en outre un élément d'injection de carburant (2) placé à proximité dudit premier moyen d'allumage (3), le conduit d'admission (7), l'élément d'injection (2) et le premier moyen d'allumage (3) étant disposés dans le même demi-cylindre, côté avant du véhicule. Plus précisément, l'élément d'injection de carburant (2) peut être disposé en dessous dudit premier moyen d'allumage (3).
摘要:
An internal combustion engine in which each cylinder is connected to sources both of air and of fuel held as a gas under pressure and in which the compression stroke, during which a full charge of air is drawn and compressed, is substantially completed before the fuel charge is then admitted and the mixture ignited to start the subsequent power stroke. The fuel may be admitted through a unit doubling as admission valve and igniter, and conventional diesel or gasoline-fuelled engines may be converted by designing that unit to fit into the conventional injector or spark plug holes. The compressed gaseous fuel may be methane, or other natural gas. The invention includes both stationary and mobile engines, especially automobile engines, and methods of operating them.
摘要:
An internal combustion engine in which each cylinder is connected to sources both of air and of fuel held as a gas under pressure and in which the compression stroke, during which a full charge of air is drawn and compressed, is substantially completed before the fuel charge is then admitted and the mixture ignited to start the subsequent power stroke. The fuel may be admitted through a unit doubling as admission valve and igniter, and conventional diesel or gasoline-fuelled engines may be converted by designing that unit to fit into the conventional injector or spark plug holes. The compressed gaseous fuel may be methane, or other natural gas. The invention includes both stationary and mobile engines, especially automobile engines, and methods of operating them.
摘要:
An internal combustion engine comprising a fuel injector for injecting fuel directly into a cylinder and a calculating device for calculating a calculated amount of fuel to be injected on the basis of an engine operating state. The fuel injector injects all of the calculated amount of fuel during a compression stroke when the calculated amount of fuel is smaller than a predetermined first amount of fuel, and injects a part of the calculated amount of fuel during an approximately first half of an intake stroke and injects a remaining part of the calculated amount of fuel during a compression stroke when the calculated amount of fuel is equal to or larger than the predetermined first amount of fuel and smaller than a predetermined second amount of fuel which is larger than the predetermined first amount of fuel.