摘要:
The invention relates to using a cycling type fuel injection valve, forming a concentrated spray area and a thin spray area, adjusting the position of those, and conforming the spray to the geometric shape of engine and mounting position of the fuel injection valve so as to reduce the fuel consumption and control the unburnt component in exhaust gas. The fuel injection valve is so constructed to form a step (201,202) on the injection hole opening (101) of the fuel injection valve, to have two or more edge transition portions of the injection hole opening (101), resulting from the step (201,202), and to cause the line connecting the edge transition portions to form an oblique angle against the wall formed by the step perpendicular to the injection hole center axis (200) and the angled wall.
摘要:
The invention relates to an internal combustion engine in which a fuel spray is directed toward an ignition plug (700). To a L shape fuel injection hole outlet portion of a swirl type fuel injector L shape cut out is provided and the fuel spray (100) is formed with a deflection fuel spray (100) which has a strong swirl component and can inject with much quantity. Accordingly, a reduction in the discharge HC amount and the improvement in the fuel consumption can be attained.
摘要:
At an outlet portion of an injection hole (8) of a fuel injection valve (1), through removal of a part (A1, 7B) of a wall forming the injection hole (8), a restriction to a spray flow is released, thereby, a deflection spray is formed in which the spray is rich at the side of restriction released and is lean at the side of restricted, accordingly, ignition property of an internal combustion engine is improved, and an optimum spray is realized which reduces exhaust amount of unburnt gas components.
摘要:
A brake controller (100) for controlling a plurality of actuators (200, 300) for driving braking members of a plurality of brakes is disclosed, where the controller includes a performance setting unit (112) for setting desired performance required of the brakes; a braking force calculating unit (112) for calculating a desired braking force to be produced by each brake; a drive ratio calculating unit (114) for calculating drive ratios at which the actuators (200, 300) operate to achieve the desired performance and to make the plurality of brakes produce a braking force equal to or nearly equal to the desired braking force; and a drive signal output unit for providing the actuators drive signals corresponding to the drive ratios for the actuators (200, 300).
摘要:
The invention relates to an engine startup fuel control system for use with an internal combustion engine (20) of the type having a plurality of combustion chambers (30), an air intake passage (34) fluidly connected to each combustion chamber (30) and a source of fuel (44). The system includes a multipoint fuel injector (42) associated with each combustion chamber (30) in which the multipoint fuel injector (42) has an inlet connected to the fuel source (44) and an outlet fluidly connected to the intake air passageway (34) adjacent its associated combustion chamber (30). A cold start fuel injector (60) also has an inlet (62) connected to the fuel source (44) and an outlet (64) connected through a cold start passageway (68) with each combustion chamber (30). A processing circuit (48) selectively activates the multipoint fuel injectors (42) as well as the cold start fuel injector (60). The processing circuit (48) determines the air/fuel mixture introduced by the cold start fuel injector (60) into each combustion chamber (30) during engine startup and then selectively activates the multipoint fuel injectors (42) to achieve a predetermined air/fuel mixture in each combustion chamber (30) during engine startup. The processing circuit (48) also variably retards the ignition of the combustion charge within at least one of the combustion chambers (30) to achieve faster heating of a catalytic converter. Furthermore, the cold start fuel injector (60) is optionally activated in a plurality of spaced sub-pulses (112) for each combustion charge provided to each combustion chamber (30).
摘要:
The invention relates to a fuel injection valve (1) comprising an injection hole (8), a valve seat located at an upstream side of the injection hole (8), a valve body (40) which performs opening and closing of a fuel passage in corporation with the valve seat and a driving means for driving the valve body (40), wherein a spray restriction (7G) is formed at an outlet portion of the injection hole (8), wherein the spray restriction (7G) extends in a direction away from an end face (7B) of a nozzle member (7) and a wall face of the spray restriction (7G) facing the injection hole (8) is offset by a distance (C1) from the outlet of the injection hole (8).
摘要:
The invention relates to using a cycling type fuel injection valve, forming a concentrated spray area and a thin spray area, adjusting the position of those, and conforming the spray to the geometric shape of engine and mounting position of the fuel injection valve so as to reduce the fuel consumption and control the unburnt component in exhaust gas. The fuel injection valve is so constructed to form a step (201,202) on the injection hole opening (101) of the fuel injection valve, to have two or more edge transition portions of the injection hole opening (101), resulting from the step (201,202), and to cause the line connecting the edge transition portions to form an oblique angle against the wall formed by the step perpendicular to the injection hole center axis (200) and the angled wall.
摘要:
In a port fuel injection lean burn engine, attaching of fuel spray onto a wall surface, which is a problem at atomizing injected fuel, is reduced, and the quality and shaping state of the mixed gas in cylinders of the engine is improved. The engine comprises a fuel injector (1); an intake valve (6) for opening and closing an intake port; and an intake air flow control device (10). The injected fuel is shaped in a low penetration fuel spray when the engine is operated in a low load and low rotation speed, and the injected fuel is shaped in a high penetration fuel spray when the engine is operated in a high load and high rotation speed, the fuel is injected in synchronism with the intake stroke of the engine, and is transported by the air flow flowing through the intake air flow control device (10) to suppress attaching of fuel spray onto a wall surface.