摘要:
The invention relates to a control apparatus for a cylinder injection type internal combustion engine (1) wherein a variable lift mechanism (14) lessens the lift of the intake valve (9) so as to set the time of opening the intake valve (9) in a retarded angle position, in cold starting of the engine. The time of closing the exhaust valve (10) is accordingly set in a retarded angle position.
摘要:
It is necessary to attain the combustion stability when performing ignition retarding in order to reduce exhaust gas and raise the exhaust gas temperature under a cold start condition, as well as soot reduction under a fully open throttle valve (23) condition. An injector (9) according to the present invention comprises: a plurality of fuel passages (11a-11F,13a-13F,38a-38H,40a-40H) having an axis line inclined with respect to a valve operation axis line (9A) at a nozzle end; wherein inclined axis lines of at least three of the fuel passages have a spreading angle, none of them intersecting with each other, and three injection points (10f,10e,10a) are formed in a plane perpendicular to a valve operation axis line (9A) to form a triangle (100); and wherein at least one center-oriented fuel passage having an injection point (10B) around the center of the triangle (100) is provided.
摘要:
The present invention relates to an intake pipe injection type engine, in which even if the air flow is generated in the intake pipe (5), the fuel is prevented from adhering to the inner wall of the intake pipe (5) to aim at the decrease of the amount of the hydrocarbon exhaust, thereby the response of the fuel supply of the demanded air fuel ratio is improved. In an intake pipe injection type engine, in which the fuel injection valve (9) is installed in the intake pipe (5), and the fuel is injected into the intake pipe (5), the fuel injection valve (9) injects a main spray (16) of which the spray angle is wide and the spray penetration is weak, and a lead spray (15) of which the spray angle is narrow and the spray penetration is strong.
摘要:
The invention relates to a control apparatus for a cylinder injection type internal combustion engine (1) wherein a variable lift mechanism (14) lessens the lift of the intake valve (9) so as to set the time of opening the intake valve (9) in a retarded angle position, in cold starting of the engine. The time of closing the exhaust valve (10) is accordingly set in a retarded angle position.
摘要:
In a center injection type of direct engine, since it has an ignition plug (20) and an injector (10) arranged in proximity, there occurs the problem that a sprayed liquid fuel directly strikes the ignition plug (20) and causes the plug (20) to misfire. A notch is to be provided at a portion of the injector end so as to form a coarse-grained portion and a dense portion in sprays of fuel, and the injector (10) is disposed so that the coarse-grained portion is directed towards the ignition plug (20). It is possible to avoid the misfiring of the ignition plug (20) and thus prolong the life of the plug (20), by preventing a liquid fuel from directly striking the plug (20).
摘要:
In a cylinder injection engine and a control device for the engine, for achieving both of the decrease of a particulate matter by suppression of fuel adhesion on the piston during fast idling of cold start and ignition retard fuel by stratification of a mixed gas around an ignition plug, a closing timing of a suction valve is set to a middle stage of a compression stroke in which a piston moving speed becomes maximum, while the fuel adhesion to the piston is decreased by injecting the fuel for stratification onto the ignition plug in the vicinity of a piston bottom dead center, and when the piston is raised in the compression stroke, the mixed gas flows from a combustion chamber to a suction pipe to generate a rising flow, and by this rising flow, the mixed gas is stratified around the ignition plug.
摘要:
The invention relates to a spark ignition device and an internal combustion device having said spark ignition device, wherein a plurality of spark electrodes (6-10) are disposed in an arc shape on the surface or so as to be projected from the surface of an insulating member (5) formed on a part of the wall face of a combustion chamber, and are formed so as to be in series electrically via discharging gaps (11-14,26). A spark plug (3) is provided integrally with an injector (4), and the spark plug (3) and the ignition coil (15) are integrated. The three members are constructed as an integral unit, thereby improving installability to an engine. The combustion engine having a piston (21) with a cavity (50) an the upper surface. The fuel is injected toward the cavity at least at the latter period of a compression stroke.
摘要:
In a center injection type of direct engine, since it has an ignition plug (20) and an injector (10) arranged in proximity, there occurs the problem that a sprayed liquid fuel directly strikes the ignition plug (20) and causes the plug (20) to misfire. A notch is to be provided at a portion of the injector end so as to form a coarse-grained portion and a dense portion in sprays of fuel, and the injector (10) is disposed so that the coarse-grained portion is directed towards the ignition plug (20). It is possible to avoid the misfiring of the ignition plug (20) and thus prolong the life of the plug (20), by preventing a liquid fuel from directly striking the plug (20).